What Are The Properties Of Polyurethane Waterproof Coatings

  • Polyurethane Waterproof Coating is an isocyanate group-containing prepolymer formed by addition polymerization of isocyanate, polyether, etc., with catalysts, anhydrous additives, anhydrous fillers, solvents, etc., processed by mixing and other processes One-component polyurethane waterproof coating.

    This type of coating is a reactive curing (moisture curing) coating, which has the characteristics of high strength, large elongation, and good water resistance. The ability to adapt to the deformation of the grassroots is strong. Polyurethane waterproof coating is a one-component environmentally-friendly waterproof coating for liquid construction. It is based on imported polyurethane prepolymer and has no additives such as tar and asphalt. It is cured after exposure to moisture in the air, forming a strong and tough, jointless integral film on the surface of the base layer. The construction requirements are as follows:

    1. The base surface is required to be flat, clean, free of sand, loose, and moisture content below 8%.
    2. During construction, the base surface should be checked and accepted first to ensure that it meets the requirements, and a layer of primer must be applied first, and the primer must be even.
    3. After the primer is cured, perform a second brushing. The brushing direction must be perpendicular to the previous one to prevent missing scratches. Brush three to five times in sequence.
    4. After completion, before the waterproof layer is cured, no one is allowed to go to the next process, so as not to damage the waterproof layer.