Acrylic waterproof coating is a single-component water-emulsion type waterproof coating prepared by adding pure acrylic polymer emulsion as the base material and adding other additives. After the waterproof coating is cured, the waterproof film formed has a certain degree of extensibility, elastoplasticity, crack resistance, impermeability and weather resistance, which can play a role in waterproof, anti-seepage and protection.
The waterproof coating has good temperature adaptability, simple operation, easy repair and maintenance.
Binder：Pure acrylic polymer emulsion
Role：Waterproof, impermeable and protective effect
Scope of application：Balcony, toilet, bathroom, kitchen, etc.
species
There are two types of waterproof materials on the market : one is polyurethane waterproof coatings. Such materials are generally made of polyurethane and coal tar as raw materials. The tar vapors it evaporates are highly toxic and difficult to remove, so it was banned in China in 2000. The polyurethane waterproof coating that is still on sale uses bitumen instead of coal tar as a raw material. However, when using this kind of paint, it is generally diluted with organic solvents such as toluene and xylene, which also contains toxicity; the other type is polymer cement-based waterproof paint . It is composed of a variety of water-based polymer emulsions and high-quality cement mixed with various additives. The flexibility of the polymer (resin) is integrated with the rigidity of the cement, making it excellent in terms of impermeability and stability. Its advantages are convenient construction, low comprehensive cost, short construction period, and non-toxic and environmentally friendly. Therefore, polymer cement-based has become the protagonist of the waterproof coating market.
Waterproof coating refers to a kind of coating that can prevent rainwater or groundwater from leaking by the coating film formed by the coating.
Waterproof coatings can be divided into emulsion type, solvent type, reactive type and modified asphalt according to the state and form of the coating .
The first type of solvent-based coatings : this type of coating has a wide variety of good quality, but the cost is high, the safety is poor, and the use is not very common.
The second type is water-emulsion and reactive polymer coatings : it is difficult for this type of coating to disperse various reinforcing agents, fillers, and polymer elastomers evenly in the colloid. It can only be added by grinding With a small amount of compounding agents, the reactive polyurethane is a two-component, easy to deteriorate and high cost.
The third type of plastic modified asphalt : This type of product can resist ultraviolet rays and has good high temperature resistance, but the fracture elongation is slightly poor.
Asphalt waterproof coating varieties are:
1. Waterproof emulsified asphalt coating, mainly used for waterproofing of buildings;
2. Colored emulsified asphalt paint for roof waterproofing;
3. Cationic emulsified asphalt waterproof coating , mainly used for waterproofing of cement board, gypsum board and fiberboard;
4. Non-ionic emulsified asphalt waterproof coating , mainly used for roof waterproofing, underground moisture-proof, pipeline anti-corrosion, channel seepage prevention, underground waterproofing, etc.;
5. Asphalt-based thick waterproof coating, mainly used for roof waterproofing;
6. Asphalt grease dilutes the waterproof coating for roof waterproofing;
7. Fatty acid emulsified asphalt, used for roof waterproofing;
8. Asphalt moisture-proof paint, used for roof waterproofing;
9. Thick asphalt moisture-proof coating, can be used as potting material
10. Bentonite emulsified bitumen waterproofing coating , used for roof waterproofing, repairing leaks in the house, underground engineering, and moisture-proofing on the ground of seed storage;
11. Lime emulsified asphalt waterproof coating, mainly used for roof waterproofing and building road waterproofing;
12. Amino polyvinyl alcohol emulsified asphalt waterproof coating, mainly used for waterproof coating;
13. Acrylic resin emulsified asphalt can be used to repair and deteriorate the asphalt surface, such as the waterproof layer of road pavement;
14. Asphalt phenolic waterproof coating, mainly used for roofing and underground waterproofing;
15. Bituminous neoprene rubber coating for roof waterproofing.
performance
1. Solid content
The solid content refers to the proportion of solids contained in the waterproof coating. Since the solid content of the paint forms a coating film after the coating is applied, the solid content is closely related to the thickness of the film and the quality of the coating film.
2. Heat resistance
Heat resistance means that the waterproof film after the waterproof coating is formed does not soften and deform at high temperatures. Non-flowing performance, that is, high temperature resistance.
3. Flexibility
Flexibility refers to the ability of the waterproof coating to maintain flexibility at low temperatures. It reflects the construction and use performance of waterproof coatings at low temperatures.
4. Water impermeability
Water impermeability refers to the performance of a waterproof coating with a certain water pressure ( hydrostatic pressure or dynamic water pressure) and no leakage for a certain period of time. It is the main quality index for waterproof coating to meet the requirements of waterproof function.
5. Extensibility
The ability of the stretchable waterproof coating film to adapt to the deformation of the base layer. After the waterproof coating is formed into a film, it must have a certain degree of extensibility to adapt to the deformation of the base layer caused by factors such as temperature difference, dryness and humidity, and to ensure the waterproof effect.
construction
For example, handle the base layer before painting. The application of waterproof coating has a lot to do with the condition of the ground base. The more uneven the base, the more paint will be used. Therefore, before applying the waterproof coating, it is best to simply treat the base layer and try to make the base layer smooth. Secondly, ensure that the ground is dust-free, soil-free, and oil-free, and mop the ground carefully with a mop to remove all the dust, otherwise it will cause cracking and peeling of the waterproof coating and affect the waterproof effect. When choosing products, we must focus on the nature. There are various names of waterproof coatings on the market, such as; slurry; mortar; etc. Some waterproof coatings are divided into type I and type II. Some people say that type II is more suitable for use. Indoors, but according to relevant professionals, the most important thing is to look at the properties of waterproof coatings, which are generally marked as general type or flexible type, and then look at the ratio of mortar and emulsion, such as 12kg+8. There are also products Indicate; special for kitchen and bathroom; in fact, this is just a gimmick, general indoor waterproof coating can be used for kitchen and bathroom.
Key points of waterproof coating construction
Waterproof materials are constantly being developed and tested. The final polymer cement waterproof material has a very good effect and is more convenient to construct. Its retention time is also very long. Generally, there will be no problems in about 20 years. Specific construction I'm here to give you all the essentials.
1. The construction should be carried out at a temperature above 5℃, and it is not suitable for construction to rain within 24 hours.
2. Brushing should be done horizontally and vertically with an interval of 4h.
3. If there are special requirements for the coating, consider increasing the number of surface coating passes.
4. During construction, the air humidity is extremely high and the temperature is low, so the drying time should be appropriately extended.
5. If the temperature of the construction site is high, the amount of water can be appropriately increased during mixing to reduce the construction viscosity.
General type
General-purpose waterproof coating, also called JS waterproof coating . It is a two-component waterproof material composed of a liquid material composed of acrylic emulsion and additives and a powder material composed of cement , sand and mineral powder in a specific ratio . After the two materials are mixed, a chemical reaction occurs, which not only forms a surface coating waterproof, but also penetrates into the substrate to form crystals to block the passage of water, achieving a double waterproof effect.
Features
Rigid waterproof material , outstanding adhesion performance, mainly used for waterproof and moisture-proof treatment of toilets, kitchens and bathrooms.
Scope of application
· Walls and floors of indoor and outdoor cement concrete structures, mortar and masonry structures;
·Waterproof the floors and walls of toilets, bathrooms, kitchens, floors, balconies, and pools;
·Used for the bottoming treatment before paving stone, ceramic tile , wood floor, wallpaper and gypsum board, which can prevent moisture and salt pollution.
Base surface treatment
(Substrate)
The substrate must be firm, smooth, clean, free of dust, greasy, wax , release agent, etc. and other debris;
·If there are pores, cracks and unequal defects on the base surface, it must be repaired and smoothed with cement mortar in advance . It is recommended to paste plastic strips on expansion joints, and a layer of non-woven fabric should be added to the joints. It is recommended to use Leibang nozzle grouting material for nozzle filling. filling;
·The yin and yang corners should be painted in a circular arc shape (or V-shaped); ·Ensure that the base surface is fully moistened, but there is no clear water;
·The newly poured concrete surface (including the plastered surface) should be allowed to dry completely before construction .
Instructions
· Stirring: Pour the liquid material into the container first, then slowly add the powder material, and at the same time, fully stir for 3-5 minutes to form a uniform slurry without raw powder mass and particles before use; (better use a stirrer)
·Brushing : Brush directly on the base surface with a brush or roller brush, using even strength, and do not miss the brush; generally, it needs to be brushed twice (according to the requirements of use), and the thickness of each brushing should not exceed 1mm; After a little dryness, apply the next time (just do not stick to your hands, usually at an interval of 1-2 hours), and cross vertically and crossly before and after, the total thickness of the painting is generally 1-2mm; if the coating has been cured, apply Moisten the other layer with water first.
·Cure: It is recommended to cover the coating with a damp cloth or spray water to maintain the coating 24 hours after construction.
·Protection : Please take protection against trampling, rain, sun exposure, sharp damage, etc. before being completely dried after construction.
·Inspection ( closed water test ): Please store water for 48 hours after the waterproof layer is dry (at least 24 hours in summer and 48 hours in winter) to check whether the waterproof construction is qualified. Lightweight walls must be tested for water spraying .
Precautions
·Please follow the above base surface treatment and use method for construction;
·Suitable for use in an environment of 5℃-40℃, avoid high temperature, low temperature and outdoor rainy weather;
·Single-layer painting should not be too thick, especially at the nozzle and corners, to prevent cracks;
·Please keep a ventilated environment after construction to facilitate the drying of the waterproof layer;
·Please avoid damaging the waterproof layer during the later construction;
· Prohibit paving tiles on the waterproofing layer using pure mud paste , and press the tiles and construction requirements gap left recommended Leibang Shi Lei Bangshi mortar or tile adhesive glue;
◎Reference dosage: 1.5-2.0 kg square meters under normal circumstances; the actual dosage is determined by the purpose, the location of use, the roughness of the base surface, and environmental factors. For details, please consult the place of purchase.
◎Product transportation: According to the requirements of non-dangerous goods. Prevent rain, sun exposure, freezing and squeezing, collision, inversion, packaging damage, etc.
◎Storage method: Store in a cool and dry place;
◎Shelf life: The shelf life of the original package is 12 months under normal storage conditions.
Polymer coating
Synthetic polymer waterproof coating
Ast synthetic polymer waterproof coating film , using a variety of polymer materials as the main film-forming materials, adding thixotropic agents , anti-sagging agents , anti-precipitation agents , thickeners , leveling agents , antioxidants and other additives and catalysts, The synthetic polymer water-based emulsion waterproof coating film processed by a special process has excellent high elasticity and excellent waterproof performance. The product is non-toxic, tasteless, safe and environmentally friendly. The coating film has strong water resistance, alkali resistance, UV resistance, high breaking elongation, tensile strength and automatic repair functions.
Features
(1) Green and environmental protection
Wan Shi Bo waterproof material and other solvent-based waterproof coatings and waterproofing membrane , the biggest feature is the environmental safety. The product is non-toxic and tasteless and has no adverse effects on the environment and the health of personnel.
(2) Excellent aging resistance
The product has stable performance under the action of ultraviolet light, light, heat and oxygen, and the service life of the material is more than 20 years.
(3) Strong adhesion
The product has excellent repairing and bonding properties to common building materials such as concrete base, glass, ceramics, plastic, metal, asbestos tile, floor tile and original waterproof material base surface, and has strong bonding force. Under the action of external force, it will not peel off and delaminate, and can form a stable waterproof overall.
(4) Good permeability
Due to the good permeability of the material, it can penetrate into the pores of the cement-based material when the material is painted, blocking the water seepage channel, and the waterproof effect is reliable.
(5) Good elongation
The product's elongation at break is ≥600%, and its crack resistance is excellent, and it has a high shielding effect on the cracks of the base layer. Even if the base layer has small cracks due to external factors, it will not break and leak.
(6) Good resistance to high and low temperature
The product can withstand high temperature up to 170℃ without flowing, and low temperature -20℃ without embrittlement.
(7) The product has bright colors
The product can be equipped with colors according to design requirements and user needs, and has excellent thermal insulation and decorative beautification effects. Therefore, the product is a decorative and multifunctional waterproof material
(8) Convenient construction
The product can form a continuous waterproof layer by brushing or scraping on any regular or irregular base surface. It can be constructed on the wet base surface, the product does not foam, the film-forming effect is good, the curing is fast, and the construction period can be effectively shortened.
(9) Wide range of applications
Products can be widely used in building roofs, basements, underground garages, indoor kitchens and toilets, boiling water rooms, balconies, exterior wall elevations, plate seams, window edges, window sills, column edges, pipe trenches and pipes, as well as grain storage, water towers, swimming pools, Waterproofing of tunnels, steel structure factory roofs, power plant cooling towers, etc., is suitable for construction in building climate zones across the country.
Construction technology
1. The base level is required to be smooth, free of sand, unevenness, and cracks.
2. Mix the product evenly before construction before construction.
3. This product can be applied in three ways: rolling, scraping and coating.
4. When painting, it should be applied horizontally and then vertically and clockwise.
5. Special parts can be strengthened with non-woven fabric or glass fiber cloth.
6. In general waterproof engineering, the waterproof effect can be achieved by applying the product twice.
Construction requirements
1. Base treatment: The waterproof base must be firm, level, clean, without water, cracks, or unevenness. The cracks must be leveled with cement mortar or Wanshibo repair mortar.
2. The product adopts 2-4 times of construction for different waterproof projects and different construction requirements, and if necessary, add tire base cloth for treatment.
3. If there is sediment in the product, it can be directly used for construction after stirring evenly.
4. The water storage test is generally carried out after the coating is completed and dried.
Reference dosage
The 1.2mm thickness is 2kg/㎡.
Coating film thickness: the film thickness per kilogram of material per square meter is about 0.6mm (excluding the thickness of the reinforced fabric).
Precautions
It should be constructed at a temperature above 0°C.
It is expected that there will be rain and fog within 24 hours, and outdoor construction cannot be carried out.
In case of rain during outdoor construction, the coating should be fully dried to form a film after the rain stops before construction.
acrylic acid
High-elastic waterproof coating is a high- performance waterproof coating made of high -grade acrylic emulsion as the base material, adding a variety of additives and fillers through scientific processing. It is an upgraded product of ordinary waterproof coatings. Due to the addition of a variety of polymer additives, the waterproof performance of this product is better than ordinary waterproof products, and it has high tensile ductility and can cover cracks.
Features
1. Highly elastic, able to withstand slight vibrations of buildings, and can cover cracks less than 8mm caused by thermal expansion and contraction, cracking, sinking and other reasons;
2. It can be directly constructed on the wet base surface, which is suitable for wall corners and water seepage parts around pipes;
3. Strong adhesion, the active ingredients in the coating can penetrate into the pores and micro-cracks in the cement base surface and produce chemical reactions, and integrate with the substrate to form a crystalline and dense waterproof layer;
4. Environmental protection, non-toxic, harmless, and can be directly applied to drinking water projects;
5. Acid resistance, alkali resistance, high temperature resistance, excellent aging resistance and good corrosion resistance; and can be used outdoors, with good weather resistance.
Scope of application
It is suitable for waterproofing, anti-seepage and moisture-proof of roofs, toilets, basements, reservoirs, and walls.
Base surface treatment
1. The surface must be flat, solid, clean, free of oil, release agent, floating dust and other loose animals;
2. For larger holes and cracks, repair mortar should be used first;
3. Prefabricated boards and board seams need to be professionally sealed before construction;
4. It is recommended that screws and bolts be sealed with epoxy resin or similar materials first ;
5. Before using Keshuifu high elastic waterproof slurry, the base surface must be fully moistened with clean water, but at the same time there should be no water;
6. For loose and porous substrates, especially cement fiberboard, etc., interface treatment must be carried out before coating with waterproof slurry.
Construction technology
1. Pour the liquid additives into a clean mixing container, then slowly add the powder while stirring according to the proportions, and stir thoroughly for 3-5 minutes until a uniform glue slurry without powder agglomeration is formed, and it will be used up within the operating time. It is recommended to use mechanical stirring (400-500 rpm) to obtain the best stirring effect;
2. Use rollers and brushes to spread the slurry evenly on the processed substrate, and apply 2 or more layers according to the use environment and performance requirements; the thickness of the general engineering waterproof layer is 1mm, and the thickness requirements of the underground engineering construction specification are 1.5-2mm;
3. After finishing the first layer, you must wait for it to be slightly dry (just not sticky), and then do the second layer, which usually takes 1-3 hours, depending on the density of the base surface and the temperature at that time. If it exceeds 24 hours, or the coating has cured, when applying the second layer on it, the surface must be re-wetted with clean water;
4. Curing and curing: From the second day after the slurry is painted, it is recommended to cover the coating with a fine spray of water or a damp cloth for 2-3 days, and then conduct a closed water test ; for a pool that holds water for a long time, wait until it is left unoccupied for two weeks. water;
5. The stirred slurry should generally be used up within 1 hour, and the solidified material cannot be reused;
6. Do not mix with water and stir, and do not change the proportion of the emulsion at will.
clean:
After the construction is completed, immediately clean all tools and equipment with water, and mechanically clean the solidified slurry.
Precautions
1. The construction temperature should be between 5℃ and 35℃;
2. The prepared slurry should be used up within 1 hour;
3. The storage temperature of liquid components is not lower than 0℃;
4. When using, do not mix moisture or other materials into this product;
5. Please adopt appropriate protective measures, such as gloves, during construction.
Shelf life:
The original sealed product is stored in a dry and cool environment. Under normal storage and transportation conditions, the shelf life of the product is one year.
Reference dosage:
When the thickness of the waterproof membrane is 1.0mm, the theoretical dosage is about 1.5-2.0kg/m2. Dosage refers to the total amount of powder and liquid, and the actual amount depends on the specific base surface conditions.
Executive standard and product quality grade: GB/T23445-2009
nanotechnology
This product is a natural penetrating protective agent. It is a new generation of water-based, environmentally friendly and anti-cracking waterproofing agent formulated by nanotechnology using inorganic silicate, active silica, special catalysts and other functional additives. After use, a transparent and air-permeable invisible waterproof protective layer is formed on the base surface. When water drops fall on the surface of the building, it will be like on a lotus leaf, leaving no trace.
Features
1. Strong penetrating power, which can penetrate into the building to form a permanent waterproof layer;
2. The waterproof layer is transparent and colorless, and does not change color, so it does not affect the original design style of the building;
3. The product can be used as a wall waterproofing agent or mixed with cement to make high-efficiency waterproof cement mortar.
Scope of application
1. All kinds of white marble, marble, granite, sandstone and other stone art buildings and guardrails and steps;
2. Suitable for waterproofing of gypsum board, wood board, fireproof board and other boards;
3. It is suitable for water- permeable exterior walls of clear water bricks, mosaics, exterior wall tiles, and paint finishes ;
4. It is mixed with cement to make high-efficiency waterproof cement mortar.
Construction method
1. Preparation: Ensure that the concrete base surface is clean. Dust and dirt should be cleaned up, those with floating slurry should be scraped off, and those with bright water should be wiped off. Ensure that the construction temperature is above 0°C, and there should be no cross-construction operations of other types of work on the spraying surface.
2. Operation method: Keshuifu invisible waterproofing agent can be sprayed. When spraying a large area, shake the Keshuifu invisible waterproofing agent evenly and pour it into a knapsack or electric sprayer, adjust the nozzle to a suitable speed, and spray it carefully and evenly. Do not touch water or step on within 3 hours after construction, and acceptance and other procedures can be allowed only after 24 hours.
3. Detailed processing: The detailed structure and construction method are the same as those described in the introduction of the American Komax permanent gel DPS product.
4. Construction dosage: Keshuifu invisible waterproofing agent is widely used in various concrete structures.
According to the requirements of CECS195-2006 application technical specifications, the general dosage is 4㎡/kg (two layers), and spraying may be added for detailed structures, cracks, etc. according to the situation.
JS
Polymer cement-based waterproof coatings (referred to as JS waterproof coatings) are liquid materials and supporting materials that are optimized by synthetic polymer emulsions (such as polyacrylate , polyvinyl acetate , styrene butadiene rubber emulsion) and various additives. The two-component waterproof coating composed of powder material (composed of special cement and graded sand) is a waterproof material with high elasticity of synthetic polymer materials and good durability of inorganic materials .
Polymer cement-based coatings contain both organic polymer emulsions and inorganic cements. The organic polymer coating film has good flexibility, low critical surface tension, good decorative effect, but insufficient aging resistance, while cement is a hydraulic cementing material with strong adhesion to the wet base surface and excellent moisture resistance. The compressive strength is high, but the flexibility is poor. The combination of the two can combine organic and inorganic , complementary advantages , rigid and flexible, improved impermeability, higher compressive ratio, superior comprehensive performance, and better waterproof effect.
main feature
1. The active ingredients in the slurry can penetrate into the capillary holes in the cement base surface, microcracks and produce chemical reactions, and penetrate into the inner material of the substrate to crystallize to form a dense waterproof layer;
2. It can cover hair-like cracks (less than 0.4 mm), resist and slightly shock;
3. It can be constructed on the wet base surface, without the need for a mortar protective layer, it can directly paste ceramic tiles and other subsequent processes;
4. The crystals penetrate deep into the pores of the base material, with high impermeability and compressive strength, and have the waterproof function of negative water surface;
5. It is non-toxic and harmless, and can be directly used in drinking pools and fish ponds; the coating has the effect of depressing the growth of mold and can prevent the pollution of the veneer by moisture and salt.
Scope of application
1. Indoor and outdoor concrete structure, precast concrete structure , cement plastering, brick wall, light brick wall structure;
2. Floor wall floor, bathroom, kitchen, flower trough; edible pool, fish pond, sewage treatment tank;
3. Basements, subway stations, tunnels, civil air defense projects, mines, and building foundations;
4. Apply to the substrate before paving stone, ceramic tile, wood floor, wallpaper, and gypsum board as a pre-layer treatment, which can achieve the effect of preventing moisture and salt pollution.
Construction process
Grassroots cleaning→Enhancement layer construction→Contact sealing→wetting the base surface→brushing the first time→maintening→brushing the second time→maintening→protective layer construction (choose to do or not to do according to the specific situation)
Construction preparation
1. Check the base layer of the waterproof layer carefully, deal with the defects carefully, and clean it up.
(1) The base layer should be flat, smooth, free of sand or skin, and have a certain strength. The drainage slope should meet the design requirements. The male and female corners should be rounded or sloped with a diameter of not less than 30mm.
(2) If the base surface is dry, the base surface must be pre-wet to keep the base surface moist, but there must be no clear water.
(3) Defects in the grassroots level should be dealt with before construction can continue.
①In case of unevenness, pits, and water accumulation, Wanshibo synthetic latex cement mortar can be used to fill the slope.
②The peeling of the surface should be removed.
2. When repairing the old waterproof layer, the adherents on the base layer should be cleaned and shoveled. The surface of the old waterproof layer is smooth, the material has not failed, and the construction is compatible with the K11 waterproof slurry directly on it.
Waterproof slurry construction
K11 waterproof slurry construction (Wanshibo's products have been configured according to the comparative example, just mix directly)
1. Coating preparation
①The weighing of ingredients must be accurate, and the error of each weighing must not exceed ±5%.
Ratio:
General-purpose K11 waterproof slurry ratio: additive: powder=0.36:1;
Flexible K11 (I) waterproof slurry ratio: additive: powder=0.80:1;
Flexible K11 (II) waterproof slurry ratio: additive: powder=0.68:1;
②Pour the additives into the container according to the proportion and in order, and then pour the powder, and at the same time use an electric stirring drill to stir, fully stir until there is no sediment in the paste.
Standard for judging whether it is uniform: the slurry has no raw powder mass to achieve uniformity.
③It needs to be placed for 5-10 minutes after mixing well, and then it can be used after stirring;
④ Keep intermittent stirring during operation to prevent precipitation.
2. Preparation for treatment at the grassroots level
After the base level is qualified, the floating dust, lime sand and grit bumps on the surface should be cleaned, and then moistened, and then the next process construction should be carried out.
3. Enhancement layer and node processing
The reinforcement layer is mainly aimed at the weak links of the construction parts, that is, the parts that are likely to cause leakage. Adopt strengthened treatment to improve the waterproof safety performance and ensure the waterproof effect.
① In the areas that need to be reinforced, such as the internal corners and the nozzles, the flexible K11 waterproof slurry should be applied for 1 to 2 times, and the width should be according to the design or specification requirements.
② The carcass reinforcement material needs to be laid. After the reinforcement coating is dried, the cut carcass material can be laid flat, and then glued with K11 waterproof slurry.
4. Painting construction of paint
① When the thickness of the coating layer is within 1.5mm, the application should be divided into two times; when the thickness is 1.5～2.0mm, the construction should be divided into three times. After the first application, after the initial drying (interval 2 ~ 4 hours), then apply the second time.
Judging the preliminary dryness standard: the wall feels dry and does not fall off when touched. The floor takes a little longer, depending on whether people walk
Will damage the waterproof layer shall prevail.
② The brushing should start from the lowest point of the plane and the farthest point from the upper feeding port. When the elevation and the plane are required to be constructed, the elevation should be first and then plane.
③ Divide the construction surface according to the quantity of mixing at one time and the thickness of one painting, and control the material used for each mixing in this area to ensure the accuracy of the coating thickness.
④ During the construction of flat coating, pour the mixed paint evenly on the base surface according to the amount, and scrape it evenly with a brush. The two degrees of coating on the flat surface should be perpendicular to each other. When painting the facade, the direction of brushing should be from bottom to top. Note that the slurry flowing to the internal corners should be scraped away in time to avoid cracking due to excessive accumulation.
5. When the first coating is dry and solid, the master should carefully check the quality of the coating and scratches one by one, check whether there is any missing coating and blisters, and make up in time.
6. After the initial drying and curing, spray water maintenance should be used to achieve the best effect.
7. No construction is allowed in rain, snow and windy days. In foggy days, the dew must be dried before construction. No rain within two hours of construction. If rain occurs during construction, rain protection measures should be taken.
8. When making a protective layer on the K11 waterproof layer, it should be firmly bonded. When the polyethylene foam board is used as the protective layer, it should be adhered firmly. When the rigid protective layer such as cement mortar , fine stone concrete, or block is used for construction, the transport vehicle shall not walk directly on the waterproof layer or directly hit with sharp objects such as iron cladding. Waterproof layer.
Construction dosage
The waterproof layer is painted twice, the thickness is about 1mm, and the amount of slurry is:
1. General-purpose K11 waterproof slurry: 2.0kg/m2.
2. Flexible K11 (I) waterproof slurry 1.8kg/m2.
Requirements and acceptance
1. After the coating construction is completed, before the rigid protective layer construction. Cope with waterproof coating layer detailed and thorough inspection, the inspection found that the pores, scratches, puncture, damage should be repaired immediately at the waterproof layer after completion of not leaking.
2. Check that there should be no blisters between the coatings.
3. After the completed waterproof layer has been cured for 7 days, a 24-hour closed-water test should be carried out if possible , and it can also be checked for leakage after rain or 24 hours of water.
Polyurethane
Polyurethane waterproof coatings can be divided into one-component and two-component.
One-component polyurethane waterproof coating, also called moisture-curing polyurethane waterproof coating, is a reactive moisture-curing membrane-forming waterproof coating. When in use, it is coated on the waterproof base layer and cured and cross-linked to form a tough, soft and seamless rubber waterproof membrane by reacting with moisture in the air. High-strength polyurethane waterproof coating is a two-component reaction curing type waterproof coating. The first component is an isocyanate-terminated prepolymer obtained by polyether and isocyanate polycondensation , and the second component is a colored liquid composed of a plasticizer , a curing agent, a thickener, a coagulant, and a filler. When in use, mix the components A and B evenly according to the proportion, paint them on the surface of the waterproof base layer, and often cross-link and cure at temperature to form a rubber elastic film with high elasticity, high strength and durability, which plays a waterproof role.
Features
(1) It can be directly applied on various wet or dry base surfaces.
(2) It has strong adhesion to the base surface, and the macromolecule substance in the coating film can penetrate into the fine cracks of the base surface, and the follow-up is strong. High bonding strength, it has strong bonding power when applied with waterproof materials and concrete, wood, ceramics, etc. It can also be applied to the bonding of some polymer coils ;
(3) The coating film has good flexibility, strong adaptability to expansion or cracking of the base layer, and high tensile strength.
(4) It is environmentally friendly, non-toxic, tasteless, non-polluting, and harmless to humans. This product eliminates coal tar, greatly reducing environmental pollution.
(5) Good weather resistance, no flow at high temperature, no cracking at low temperature, excellent anti-aging performance, resistance to oil, abrasion, ozone, acid and alkali.
(6) The two-component polyurethane is cured to form an elastic and seamless and complete whole, which improves the waterproof and impermeability of construction projects, and has the advantages of incomparable membrane waterproofing; the coating film is dense, and the waterproof layer is complete. No cracks, no pinholes, no bubbles, low water vapor permeability coefficient, it has both waterproof function and gas barrier function.
(7) Simple construction, short construction period and convenient maintenance
(8) Various colors can be adjusted according to needs
(9) Light weight, does not increase the load of the building
Scope of application
It is suitable for kitchen, bathroom, balcony, basement, pool, terrace swimming pool, warehouse, tunnel, wooden floor moisture-proof, floor heating and waterproof, and various water-absorbent porcelain tiles and cement-based glued floors, walls and floors. Professional waterproof treatment.
Precautions
Paint thinners such as alkyd and nitro thinner should not be used as thinners, and contact with water is strictly prohibited. The construction site shall be well ventilated, fireworks are strictly prohibited, and construction cannot be carried out on rainy days. If material B is found to have sedimentation, it should be stirred evenly before applying. The paint should be prepared for immediate use and completed within 40 minutes.
Construction method
The base layer is required to have a flat surface, solid and free of floating sand, and fully dry. The internal and external angles should be made into an arc shape, with a diameter of the internal angle greater than 50mm and the diameter of the external angle greater than 10mm.
Ingredients and dosage: According to the construction dosage, mix the components A and B according to the proportion, stir and use them evenly. The reference dosage is: the dosage of 1mm thick coating film is about 1.3-1.5kg/㎡.
Brushing: Coat the mixed paint uniformly with a rubber or plastic scraper. The thickness is required to be the same, generally 1.5mm-2.0mm. It should be applied in 3-4 passes, and each pass is perpendicular to the previous direction, generally separate For film formation, special parts should be strengthened.
Features
1. With unique waterproof performance, it can penetrate into the cement base material to form a permanent overall waterproof structure layer.
2. Low consumption, 4-5 square meters per kilogram can be constructed.
3. Excellent aging resistance and long service life of materials. The main technical indicators of the product refer to international standards.
4. This product is a non-toxic and environmentally friendly material, which is safe, simple and non-polluting in construction. There is no special requirement for the water content of the grassroots, and the water content can be constructed when the water content is less than 15%.
5. This product can play a role in heat insulation, heat preservation and decoration and beautification.
Scope of application
Nano-penetrating waterproofing agent can adapt to a variety of exterior wall substrates, such as clean water walls, lime, cement mortar coating, and concrete surfaces. They all have good waterproof, moisture-proof, mildew-proof, anti-pollution and anti-salt precipitation functions. Covered on decorative surfaces of various coatings, it can greatly improve the waterproof, color retention and anti-pollution capabilities of the coating. Used on the joint surface of ceramic tiles and mosaics, it can prevent the wall from absorbing water and the damage caused by frost caused by water absorption and causing the tiles and mosaics to peel off, and it can prevent the wall from salting out and causing white flowers. Used in ancient buildings, it can greatly improve its acid rain corrosion resistance, weathering resistance, water resistance and color retention performance. Therefore, Wanshibo Nano penetrating waterproofing agent can be widely used in various building decorations, gardens, ancient building stone carvings, cultural relics protection units, warehouses, archives, libraries, and martyrs' cemeteries. Especially to solve the leakage of granaries, civil houses and other buildings, it is also suitable for various thermal insulation materials as water repellents, and used for gypsum boards or products as water repellents.
Technical index
Solid content ≥26%; PH: 3.5~5, waterproof effect: untreated aerated concrete slab, 6 drops of water are fully absorbed within 30s, after treatment, the 6 drops of water within 5h remain the same. 4. Construction method 1. Spraying or brushing: When using, mix the waterproofing agent and water at a ratio of 1:3 to 5 evenly, and use a clean agricultural sprayer or row brush on the dry base surface (wall surface, etc.) three times vertically and horizontally. , Do not intermittently, each kilogram of waterproofing agent can be sprayed on the wall of 20-50 square meters. No rain shall be invaded within 24 hours after construction. The construction shall be stopped at a temperature below 4°C, and the base surface must be dry during construction. 2. Add cement mortar : waterproof agent and water in a ratio of 1:3-10, then add cement and sand to mix or mortar to use.
Bing Ning
Bing Ning is also called Bing Ning waterproof and anti-corrosion material, which is environmentally friendly and non-toxic. It is a polymer waterproof and anti-corrosion system based on modified polymer molecules. It is a high polymer latex composed of imported epoxy resin modified latex and domestic acrylic emulsion, polypropylene, synthetic rubber , various emulsifiers, and modified latex. Add base material and appropriate amount of chemical auxiliaries and fillers, processed by plasticizing, mixing, calendering and other processes to produce high-quality polymer waterproof and anticorrosive materials , using imported materials and domestic high-quality auxiliary materials, and producing high-quality products in accordance with the highest level of national industry standards. The product is listed as a key product promoted by the Ministry of Construction and a recommended product for the country's well-off housing construction. It has a long life, easy construction, and a long-term immersion in water with a life span of more than 50 years.
The cement mortar made of acrylic waterproof and anticorrosive material is environmentally friendly and non-toxic, which has good corrosion resistance, durability, impermeability, compactness, high adhesion and strong waterproof and anticorrosive effect. It is resistant to the corrosion of soda ash production media, urea, ammonium nitrate, sea water, hydrochloric acid and acid salts. It is mixed with sand, ordinary cement or special cement to make cement mortar, which is cast or (sprayed or manually applied) in concrete and A solid waterproof and anticorrosive mortar layer is formed on the surface, which is a rigid and tough waterproof and anticorrosive material. Mixing with cement and sand can modify the mortar, which can be used for the treatment of building walls and ground and the waterproof layer of underground engineering.
Scope of application
1. Applicable to industrial and civil buildings, internal and external walls, external walls, concrete, basements, pools, water towers, special-shaped roofs, tunnels, toilets, dams and other parts of the waterproof, anti-corrosion, anti-seepage, moisture-proof and leakage repair projects.
2. Waterproof, anti-corrosion, adhesive reinforcement and reinforcement treatment of civil air defense, underground engineering and water conservancy and electricity engineering, and waterproof and anti-corrosion lining.
3. The inner and outer walls of the basement, toilets and baths, anti-seepage panels of the dam, channels, aqueducts, bridge decks, ground swimming pools, delivery pools, chemical corrosion-resistant and alkali-resistant storage, etc.
4. It can also be used for waterproofing, impermeability and anti-corrosion of concrete reservoirs. In addition, the product is used in the crystallizer, mother liquor clarifier, and the inner wall of the distillation tower of the alkali plant to have excellent anti-corrosion and waterproof effects.
product advantages
It can be constructed on the wet surface, which is difficult for general solvent-based waterproof and anticorrosive materials in China. The construction can be carried out in mixed concrete. Because the object has an impact on the construction base surface, the adhesion of the coating to the concrete is increased. At the same time, the environmentally friendly and non-toxic acrylic waterproof and anticorrosive material fills the pores and fine cracks in the mortar. Make the coating have good impermeability. The cohesive force is 3-4 times higher than that of ordinary cement mortar , and the flexural strength is more than 3 times higher than that of ordinary cement mortar, so the mortar has better crack resistance. It can be waterproof, corrosion-proof and moisture-proof on the front surface, the back surface, the slope surface, and the special-shaped surface. Strong adhesion, will not produce hollowing, cracking, water channeling and other phenomena. The environmentally friendly non-toxic type of acrylic waterproof and anticorrosive material can be used for waterproof and anticorrosive, but also for leaking and repairing. It can be completed within one day without leveling layer and protective layer, short construction period and low comprehensive cost. It can be constructed on wet or dry base, but the base must not have running water or stagnant water. Acrylic waterproof and anticorrosive material, environmentally friendly and non-toxic, has the general properties of neoprene: excellent mechanical properties, resistance to sunlight, ozone and atmosphere, and seawater aging, resistance to oil, ester, acid, alkali and other chemical corrosion, heat resistance, non-prolonged burning , Self-extinguishing, anti-deformation, anti-vibration, abrasion resistance, good air tightness and water resistance, and great total adhesion. It is non-toxic, harmless, and can be used in the construction of drinking pools, and the construction is safe and simple.
Construction method
a Ordinary silica cement: sand: latex=1:2:0:35, stir evenly, and wipe it twice with a rubber scraper or wooden trowel. b Or ordinary silica cement: latex=1:0:35, and it can be evenly stirred into a putty shape and wiped three times. c The sand is required to be clean (medium sand). Ordinary Portland cement is best used for cement . The wall thickness is 10mm, the floor thickness is 15mm, and the dosage is 1.5-3kg/m*2. The construction temperature should not be lower than -5 degrees Celsius and avoid sun exposure. The curing conditions are the same as those of ordinary cement mortar or concrete. Appearance: light green liquid
Introduction
Waterproof coating is made of synthetic high molecular polymer , high molecular polymer and asphalt, high molecular polymer and cement as the main film-forming materials; adding various additives, modified materials, filling materials, etc., processed into a solvent-based, water-based Milk or powder paint. The paint is applied to the base surface of the building's roof, basement, toilet , bathroom and exterior wall that need to be waterproofed. It can form a continuous, integral, waterproof coating layer with a certain thickness under normal temperature conditions .
Waterproof coating is a viscous liquid polymer synthetic material that has no fixed shape at room temperature . After coating, it is a general term for materials that form a tough waterproof film on the base layer after solvent volatilization or moisture evaporation or reaction solidification.
Features
1. The waterproof coating is a viscous liquid at room temperature. After coating and curing, it can form a seamless waterproof coating film.
2. Waterproof coatings are especially suitable for waterproofing construction on facades, yin and yang corners, pipes through structural layers, protrusions, narrow places and other detailed structures. The curing shop can form a complete waterproof membrane on the surface of these complex parts.
3. Waterproof coating construction is a cold operation, easy to operate, and low labor intensity.
4. The waterproof layer of the coating film formed after curing is light in weight. For special-shaped roofs such as light and thin shells, waterproof coatings are mostly used for construction.
5. The waterproof coating film has good water resistance, weather resistance, acid and alkali resistance and excellent extension performance, which can meet the needs of local deformation of the base layer.
6. The tensile strength of the waterproof layer of the coating film can be strengthened by attaching a carcass reinforcement material . For some parts that are prone to leakage, such as cracks in the base layer, structural joints, and pipe roots, it is easy to strengthen, strengthen, and repair. deal with.
7. Waterproof coating usually relies on manual coating, and its thickness is difficult to be uniform-so during construction, it is necessary to repeat the application in strict accordance with the operation method to ensure the minimum usage per unit area and ensure that the coating is waterproof Layer construction quality.
8. J11 film is used for waterproofing and maintenance is more convenient.
classification
1. Classification according to the liquid type of the coating
According to the liquid type of the coating, waterproof coatings can be divided into three types: solvent type, water emulsion type, and reactive type.
In this type of coating. The polymer material, which is the main film-forming substance, is dissolved in an organic solvent to become a solution. The polymer material is stored in the solution (paint) in a molecular state;
This type of coating has the following special characteristics: through solvent volatilization, through the process of polymer molecular chain contact, overlap and other processes; the coating dries quickly, the conjunctiva is thin and dense; the production process is simpler, and the storage stability of the coating is better; It is flammable, explosive, and toxic. Pay attention to safety during production, storage and use; because the solvent evaporates quickly, it will pollute the environment during construction.
This type of waterproof coating is used as the main film-forming polymer material to stably suspend (rather than dissolve) in the water with extremely small particles (rather than in a molecular state), and become an emulsion coating.
This type of coating has the following characteristics: it evaporates through the process of solid particles approaching, contacting, deforming and forming a film; the coating dries slowly, and the compactness of the one-time film is lower than that of the solvent-based coating , and it is generally not suitable for construction below 5 ℃; The period generally does not exceed half a year; it can be constructed on a slightly damp base; it is non-toxic, non-flammable, relatively safe in production, storage and transportation, and use; it is easy to operate and does not pollute the environment; and the production cost is low.
In this type of coatings, the polymer material, which is the main film-forming substance, exists in the form of a liquid prepolymer. Most of the coatings are composed of two-component or one-component, almost no solvent.
This type of coating has the following characteristics: through the chemical reaction of the liquid polymer prepolymer with the corresponding substance, it becomes a solid (conjunctivation); it can be formed into a thicker film at a time, without shrinkage, and the film is dense; two groups The coating needs to be 1:2 accurate on site; mixing evenly to ensure quality; the price is more expensive.
Polyurethane waterproof coating the initial waterproof material is tar pitch and petroleum green paper linoleum, which originated in Europe and was introduced to China in the 1920s. With the advancement of science and technology, modern waterproof materials have developed rapidly. In the 1970s, various high-minute water-repellent materials have come out one after another. China's waterproof materials have gradually formed three major series of coiled materials, coatings, and sealing materials .
Synthetic polymer waterproof material is a waterproof coating material made of synthetic rubber or contract resin as the main film-forming material and adding other auxiliary materials.
There are various brands of synthetic molecular waterproof materials, such as polyurethane, acrylic and their mixtures, and so on.
2. Waterproof coatings can be divided into film-forming substances : polymer modified bitumen waterproof coatings, synthetic polymer waterproof coatings and organic-inorganic composite waterproof coatings. It is used for building roofs, toilets and baths, underground and waterproof projects with anti-seepage and moisture-proof requirements. Because it forms a continuous and seamless waterproof membrane after curing, it is especially suitable for waterproofing and moisture-proofing multi-node or special-shaped parts.
Features
(1) The waterproof coating is viscous and liquid before curing. Therefore, it can not only be on the horizontal plane, but also on the facade, yin and yang corners and various complex surfaces to form a seamless and complete waterproof membrane during construction;
(2) There is no need for heating during use, which not only reduces environmental pollution, but also facilitates operation and improves working conditions;
(3) The formed waterproof layer has a small dead weight, which is especially suitable for waterproofing of light roofs.
(4) The formed waterproof membrane has greater extensibility, water resistance and weather resistance, and can adapt to small changes in base cracks.
(5) The coated waterproof coating is not only the main material of the waterproof layer, but also the adhesive, so the bonding quality is easy to guarantee and the maintenance is relatively simple. Especially for some parts that are prone to leakage, such as base cracks, construction joints, rainwater buckets, and through pipes, it is easy to carry out enhanced painting, patching and other operations.
Choose
The use of waterproof coatings should consider factors such as the characteristics of the building, environmental conditions and use conditions, combined with the characteristics and performance indicators of the waterproof coating.
1. Asphalt-based waterproof coating
Asphalt-based waterproof coating refers to a water-emulsion or solvent-based waterproof coating prepared with asphalt as a base material. Such coatings are not modified asphalt or modified substantially no effect, lime emulsified asphalt , asphalt emulsion and bentonite, asbestos aqueous bitumen coating and the like. It is mainly suitable for waterproofing of industrial and civil building roofs, concrete basements and toilets with waterproof grades III and IV.
2. Polymer modified bitumen waterproof coating
Polymer modified bitumen waterproof coating refers to a water-emulsion or solvent-based waterproof coating made of bitumen as a base material and modified with a synthetic high molecular polymer. This type of coating has much improvement over asphalt-based coatings in terms of flexibility, crack resistance, tensile strength, high and low temperature resistance, and service life. Varieties include recycled rubber modified asphalt waterproof coating, water-emulsion neoprene rubber asphalt waterproof coating and SBS rubber modified asphalt waterproof coating . It is suitable for waterproofing works on roofs, grounds, concrete basements and toilets with grade II, grade III and grade IV waterproofing. The thickness of the coating film should meet the requirements of the following table:
Roof waterproof level | Number of fortified roads | Polymer modified bitumen waterproof coating | Synthetic polymer waterproof coating |
Grade I | Three or more fortifications | — | Should not be less than 1.5mm |
Grade II | Second fortification | Should not be less than 3mm | Should not be less than 1.5mm |
Grade III | Fortify | Should not be less than 3mm | Should not be less than 2mm |
Grade III | Fortify | Should not be less than 2mm | — |
3. Synthetic polymer waterproof coating
Synthetic polymer waterproof coating refers to a single-component or multi-component waterproof coating made of synthetic rubber or synthetic resin as the main film-forming material. This kind of coating has high elasticity, high durability and excellent resistance to high and low temperature. The varieties include polyurethane waterproof coating , acrylic waterproof coating , polymer cement coating and organic silicon waterproof coating. It is suitable for waterproofing projects for roofs, basements, pools and toilets with waterproof grades I, II and III.
Purchase method:
1. Recognize famous brands. Distorted goods are rampant in the market, and toxic materials that are explicitly eliminated and banned by the state have also flooded into the homes of the people. Ordinary consumers should choose branded products with high reputation, good reputation, high degree of anti-counterfeiting, and international quality system certification.
2. Focus on nature. There are various names of waterproof coatings on the market, such as "slurry", "mortar", etc. Some waterproof coatings are divided into type I and type II. Some people say that type II is more suitable for indoor use, but professionals Introduce, generally it will be marked as "universal type" or "flexible type", and then look at the ratio of mortar and emulsion, some products are marked "kitchen and bathroom special", in fact, this is just a gimmick, general indoor waterproof coating can be used for kitchen and bathroom .
3. You should go to the building materials supermarket to buy. When consumers buy waterproof coatings, it is best to go to the supermarket to buy waterproof coatings. Because the brands in the building materials market are mixed, it is difficult to guarantee that what they buy will be genuine. Saving money is not worrying. The construction team has a rebate for buying building materials. It is best for consumers to go to the building materials supermarket a few times to buy waterproof coatings instead of handing over the purchase rights to the decoration company or the construction team.
Construction requirements
The defects and water seepage on the surface of the base layer must be carefully dealt with before the coating is applied . Because when the paint is not solidified, if it is under the action of water pressure, the coating cannot solidify or form a cavity, forming a hidden danger of water leakage. The base surface is clean and free of scum, which is conducive to the uniform coating of the paint and has a certain bonding force with the base surface. It is difficult to dry the base surface in underground engineering, so this article only proposes the requirements of no water droplets and impermeability.
It is difficult to coat the male and female corners of the base layer. According to engineering practice, the male and female corners are required to be arc-shaped to ensure the coating quality of these parts.
Waterproof coating layer construction of the underground construction is only one step in the process, its follow-up processes, such as backfill, steel banding floor and side walls, pouring concrete and so are likely to damage the paint is ready waterproof layer, especially organic waterproof coating waterproof Floor. Therefore, this article makes clear provisions on the protective layer practice of the paint waterproof layer.
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