Environment-friendly polymer cement waterproof coating and preparation method thereof

Abstract

The invention discloses environment-friendly polymer cement waterproof coating which is characterized in that the coating is prepared by mixing a liquid material and a powder material according to a mass ratio of 1:(0.9-2); the liquid material is prepared from the following raw materials in parts by weight: 40-60 parts of a vinyl-terminated waterborne polyurethane emulsion, 10-20 parts of 2,6-diaminopurine riboside / 5,5-dimethyl-1,3-bis(oxiranyl methyl)imidazolidine-2,4-dione polycondensate, 1 to 3 parts of allyl 2-chloro-1,1,2-trifluoroethyl ether, 1 to 4 parts of a cosolvent, 2 to 5 parts ofan emulsifier, 0.1 to 0.3 part of a dispersing agent, 0.1 to 0.3 part of a defoaming agent, 1 to 3 parts of a coupling agent and 20-30 parts of water; the powder material comprises the following components in parts by weight: 30-40 parts of cement, 10-20 parts of palygorskite powder, 10-20 parts of cordierite powder, 5-10 parts of zircon powder, 5-10 parts of waste gypsum, 1-2 parts of lignin and0.3-0.6 part of a photoinitiator. The coating is excellent in comprehensive performance, good in performance stability, large in adhesive force, not easy to fall off, good in corrosion resistance, wear resistance and mechanical property, and safe and environment-friendly to use.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to an environment-friendly polymer cement waterproof coating and a preparation method thereof. Background technique [0002] In recent years, with the rapid development of my country's economy and the advancement of urbanization, various major construction projects have sprung up, adding bricks and tiles to the city's style. These major construction projects have become urban modernization a sign of. However, behind these major construction projects, the extensive use of building materials is inseparable. The quality of building materials is a key factor that directly affects the quality of the project. Therefore, it is very necessary to develop building materials with excellent comprehensive performance. [0003] Polymer cement waterproof coating is a very important building material. It is mainly composed of water-based polymer emulsion and cement and other gel materi...

AI Technical Summary

Problems solved by technology

[0004] The polymer cement waterproof coating in the prior art has good waterproof performance, but there are common problems such as cracking in the inner corner, sagging in outdoor construction, non-drying in high-humidity environment, and low strength.

In addition, the climate difference between the north and the south of my country is obvious, especially in the south, where the humidity in the air is high, the drying speed of the polymer cement waterproof coating is slow, and the tensile and bonding strength after drying are low; in addition, the storage period of this type of material is short, and generally requires It is ready-to-use and ready-made, and the cost is expensive. It is prone to the problem of poor compatibility between liquid materials and powder materials during use. These defects limit the comprehensive promotion of polymer cement waterproof coatings.

[0005] Chinese invention patent CN201510708150.2 discloses a high-strength high-strength polymer cement waterproof coating. This invention mainly emphasizes the development of polymers with high elongation and high strength (under normal conditions) by improving the physical properties of the product. Cement waterproof coating, but because its products only have high elongation and high strength characteristics under normal temperature and humidity conditions, in the actual use process, due to the high temperature and high humidity environment, the performance of ordinary products is greatly attenuated, and it cannot be achieved in actual use. The so-called high extension, high strength function