Waterproof coating

There are two categories of waterproof materials on the market: one is polyurethane waterproof coating. Such materials are generally made of polyurethane and coal tar as raw materials. The tar gas volatilized from it is highly toxic and not easy to clean, so it was banned from use in China in 2000. The polyurethane waterproof coating still on sale uses asphalt instead of coal tar as 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 is polymer cement-based waterproof coating. It is composed of emulsion synthesized by a variety of water-based polymers and high-quality cement mixed with various additives. The flexibility of polymer (resin) is integrated with the rigidity of cement, making it excellent in impermeability and stability. Its advantages are convenient construction, low comprehensive cost, short construction period, non-toxic and environmental protection. Therefore, polymer cement-based coating has become the leading role in the waterproof coating market.

Waterproof coating refers to a kind of coating that can prevent rainwater or groundwater from leaking through the film formed by the coating.

Waterproof coating can be divided into emulsion type, solvent type, reactive type and modified asphalt according to the coating state and form.

Solvent based coating: this kind of coating has a wide range and good quality, but it is not very common because of its high cost and poor safety.

The second type is water emulsion and reactive polymer coatings: it is difficult to evenly disperse various reinforcing agents, fillers, and polymer elastomers in the colloid in the process of this type of coatings, and only a small amount of additives can be added by grinding. Reactive polyurethane is two-component, easy to deteriorate, and high cost.

The third type of plastic modified asphalt: this type of product can resist ultraviolet rays and high temperature, but its fracture elongation is slightly poor.

Asphalt waterproof coatings include:

1、 Waterproof emulsified asphalt coating, mainly used for waterproofing of buildings;

2、 Colored emulsified asphalt coating for roof waterproofing;

3、 Cationic emulsified asphalt waterproof coating, mainly used for waterproof of cement board, gypsum board and fiberboard;

4、 Non ionic emulsified asphalt waterproof coating, mainly used for roof waterproof, underground moisture-proof, pipeline anti-corrosion, channel seepage prevention, underground waterproof, etc;

5、 Asphalt based thick waterproof coating, mainly used for roof waterproofing;

6、 Asphalt ointment diluted waterproof coating for roof waterproofing;

7、 Fatty acid emulsified asphalt for roof waterproofing;

8、 Asphalt moisture-proof coating for roof waterproofing;

9、 Thick asphalt moisture-proof coating can be used as potting material

10、 Bentonite emulsified asphalt waterproof coating is used for roof waterproofing, repairing the leakage of the room floor, underground works, and seed bank ground moisture-proof;

11、 Lime emulsified asphalt waterproof coating, mainly used for roof waterproofing and building pavement 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 asphalt surfaces, such as the waterproof layer of road pavement;

14、 Asphalt phenolic waterproof coating, mainly used for roof and underground waterproofing;

15、 Asphalt neoprene coating is used for roof waterproofing.

1. Solid content

Solid content refers to the proportion of solids contained in the waterproof coating. Since the coating film is formed by the solid components after coating, the solid content is closely related to the film thickness and film quality.

2. Heat resistance

Heat resistance refers to that the waterproof film after the waterproof coating film is formed will not soften and deform under high temperature. Non flowing performance, namely high temperature resistance.

3. Flexibility

Flexibility refers to the performance of the film layer of waterproof coating to keep flexibility at low temperature. It reflects the construction and use performance of waterproof coating at low temperature.

4. Water impermeability

Water impermeability refers to the performance of waterproof coating under certain water pressure (hydrostatic pressure or dynamic pressure) and without leakage for a certain period of time. It is the main quality index that the waterproof coating meets the waterproof function requirements.

5. Extensibility

The ability of the extended waterproof film to adapt to the deformation of the base course. The waterproof coating must have certain extensibility after being filmed to adapt to the deformation of the base layer caused by temperature difference, dry and wet factors, and improve/increase the waterproof effect.

This product is a natural penetration type protective agent. It is a new generation of water-based, environment-friendly, crack resistant waterproof agent prepared by inorganic silicate, active silica, special catalyst and other functional additives nanotechnology. After use, a transparent and breathable invisible waterproof protective layer is formed on the base surface. When water drops fall on the surface of buildings, it is like falling on lotus leaves, leaving no trace.

Product features

1. The penetration force is very strong, which can penetrate into the interior of the building to form a long-term waterproof layer;

2. The waterproof layer is transparent, 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 waterproof agent, and can also be mixed with cement to make efficient 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. It is suitable for waterproof of gypsum board, wood board, fireproof board, etc;

3. It is applicable to clean brick, mosaic, exterior wall brick, and permeable exterior wall with paint finish;

4. It is mixed with cement to make efficient waterproof cement mortar.

Construction method

1. Preparation: ensure that the concrete base is clean. Dust and dirt shall be cleaned up, laitance shall be scraped off, and clear water shall be wiped off. Ensure that the construction temperature is above 0 ℃, and there should be no cross construction of other types of work on the spraying surface.

2. Operation method: Keshuifu invisible waterproof agent can be sprayed. For large-area spraying, shake up Keshuifu invisible waterproof agent and pour it into backpack or electric sprayer, adjust the nozzle to a suitable speed, and then spray carefully and evenly. Do not touch water or step on it within 3 hours after construction. Acceptance and other processes can be allowed after 24 hours.

3. Detail treatment: the construction method of detail structure is the same as that described in the product introduction of Kermars Permanent Condensate DPS.

4. Construction dosage: Keshuifu invisible waterproof agent is widely used in various concrete structures.

According to the requirements of CECS195-2006 application technical specification, the general dosage is 4 ㎡/kg (two layers), and the detailed structure and cracks can be sprayed as appropriate.