Hydrophobic polymer cement waterproof coating and preparation method thereof

Abstract

The invention discloses a hydrophobic polymer cement waterproof coating and a preparation method thereof. The hydrophobic polymer cement waterproof coating is prepared from, by weight, 433 parts of polymer emulsion, 5 parts of plasticizer, 5 parts of defoaming agents, 1.6 parts of thickener PRM-300, 0.8 part of multifunctional additive, 4 parts of methyl sodium silicate, 266 parts of 42.5 Portland cement, 145 parts of 8# quartz sand and 145 parts of 10# quartz sand. After curing and film forming, the coating film has the waterproof and hydrophobic actual effects at the same time, and has the good capillary crystalline performance, the reverse capillary effect is achieved, the excellent hydrophobic layer is formed, and meanwhile the minimum inflation function and compactness increasing function are achieved; the methyl sodium silicate is added as a hydrophobic agent, and due to the fact that the methyl belongs to hydrophobic groups, the hydrophobicity of waterproof coating is increased after film formation, the compactness of the coating is increased, the waterproof, dampproof, anti-aging and anti-fouling performance and weather resistance of the waterproof coating film are improved, and the hydroscopicity of the coating film is lowered.

Description

Technical field [0001] The invention belongs to the technical field of waterproof coatings, and in particular relates to a hydrophobic polymer cement waterproof coating and a preparation method thereof. Background technique [0002] 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. Its volatile tar gas is very 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) and the rigidity ...

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Problems solved by technology

[0004] The object of the present invention is to provide a kind of water-repellent polymer cement waterproof coating and its preparation method, aim to solve existing waterproof coating existing waterproof, moisture-proof, anti-aging, anti-pollution and weather resistance are relatively poor, coating film water absorption stronger question

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