WJG-872 High-speed Rail Dedicated Polyurethane Waterproof Coating
WJG-872 high-speed rail polyurethane waterproof coating is a two-component reaction-cured synthetic polymer waterproof coating. Component A is a polyurethane prepolymer obtained by polycondensation of polyether and isocyanate. Component B is a colored liquid composed of plasticizer, curing agent, thickener, accelerator, and filler. When used, components A and B are mixed in a certain proportion, stirred evenly, and then brushed onto the surface to be constructed. After several hours, it reacts and solidifies into a waterproof coating film that is elastic, tough, and durable. The color is any color other than black.