Waterproof coating with strong permeability and preparation method thereof

Abstract

The invention relates to the field of waterproof coatings, in particular to a high-permeability waterproof coating and a preparation method thereof. The waterproof coating comprises an emulsion blendand powder, and the weight ratio of the emulsion blend to the powder is (5-8):(1-3); the emulsion blend is prepared from the following raw materials in percentage by weight: 10-15% of epoxy resin, 2-5% of polyamide resin, 3-8% of xylene, 20-30% of polystyrene, 15-20% of synthetic rubber, 8-15% of filler, 10-20% of vinyl resin, 10-20% of styrene and 3-10% of coagulant. The powder is prepared from the following raw materials in percentage by weight: 30-55% of chlorinated rubber, 10-20% of a chemical additive, 8-15% of activated silicon, 10-18% of cement, 10-20% of activated silicon dioxide and 10-20% of activated aluminum oxide. The activated silicon, the activated silicon dioxide and the activated aluminum oxide are added into the powder, the active substances can permeate into capillary pores and microcracks in a cement base surface after being mixed with the emulsion, a stable compound with gelling property is generated, a compact waterproof layer is formed, and the waterproof performance is high.

Description

technical field [0001] The invention relates to the field of waterproof coatings, in particular to a waterproof coating with strong permeability and a preparation method thereof. Background technique [0002] At present, one of the traditional waterproof coatings on the market mainly relies on physical adsorption to bond with the base surface. This kind of adhesion is relatively small and is easily affected by external environmental factors and disappears; JS waterproof coating 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 that is waterproof, but also penetrates into the substrate to form crystals to block the passage of water, achieving a double waterproof effect. [0003] There is an existing Chinese patent for a penetrat...

AI Technical Summary

Problems solved by technology

[0005] Traditional waterproof coatings, such as polyurethane, asphalt, epoxy resin and acrylic resin, etc., form a waterproof film by painting a certain thickness on the concrete surface, but there are problems such as low strength, poor durability, and easy corrosion In the past, it was often necessary to pre-treat the working surface, and then add a protective layer to achieve a better effect