Reactive polymer cement waterproof coating

Abstract

The invention discloses a reactive polymer cement waterproof coating that contains an organic component, an inorganic component and water of which the weight ratio is 1:1-2:0.6-0.9, wherein the organic component is an end NCO base prepolymer obtained from the reaction of vacuum dehydrated polyether polyol with polyisocyanates; and the inorganic component is cement and inorganic filler and the mixture of the two. The product is non-toxic, free of pollution and environment-friendly. The coating has excellent mechanical property and chemical property, as well as excellent waterproof property. The coating solidifies in reaction, has low requirement on construction environment, allows construction on a damp base surface without visible water, and is good in resistance to low temperature and water, free of swelling and applicable to underground waterproof engineering.

Description

Technical field: [0001] The invention relates to a reactive polymer cement waterproof coating applied to underground engineering waterproofing. Background technique: [0002] JS coating film was developed in my country in the late 1980s, and a few manufacturers put their products on the market in the early 1990s. Beijing is the birthplace of JS technology. By the mid-1990s, the few production plants were mainly concentrated in Beijing. The early JS coatings had many defects, especially the water-based waterproof coatings did not solve the problem of water resistance, and the JS coatings encountered great difficulties in popularization due to water absorption and swelling. Several years after the JS coating products came out, the "Technical Specifications for Waterproofing of Underground Engineering" and "Acceptance Specifications" have long rejected JS coatings. With the development of JS coating technology and the continuous improvement of the country's environmental prot...

AI Technical Summary

Problems solved by technology

[0003] The products currently on the market are mainly composed of acrylic resin and inorganic powder. This type of product has the characteristics of high strength, no joints, strong adhesion, high temperature resistance, cold construction, non-toxic and harmless, etc., but in the actual application process There are obviously some defects in it: (1) It is a volatile curing material, the curing speed is slow, the construction period is long, and it cannot even be dried in places with poor ventilation; (2) It can only be constructed by thin coating and multiple coats. If it is thickly coated, it will cause cracking, or it will not dry, and it will take a lot of time and affect the quality; (3) The water resistance is poor. After being used in underground engineering, it will swell after water absorption, and the strength will decrease, which will affect the waterproof effect.