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Polyurethane coating is the more common class of paint, […]
Polyurethane coating is the more common class of paint, can be divided into two-component polyurethane coating and one-component polyurethane coating. Two-component polyurethane coatings are generally composed of isocyanate prepolymers (also known as low molecular urethane polymers) and hydroxyl-containing resins, often referred to as the curing agent component and the main agent components. This type of coating a lot of varieties, the scope of application is also very broad, according to the different hydroxyl-containing components can be divided into acrylic polyurethane, alkyd polyurethane, polyester polyurethane, polyether polyurethane, epoxy polyurethane and other varieties.
Generally have good mechanical properties, high solids content, all aspects of performance are better. Is a very promising type of paint varieties. The main direction of application are wood coatings, automotive repair coatings, anti-corrosion coatings, floor paint, electronic coatings, special coatings, polyurethane waterproof coating. Drawback is the complexity of the construction process, the construction of high environmental requirements, paint prone to ills. One-component polyurethane coating mainly urethane oil coating, moisture curing polyurethane coating, closed polyurethane coating and other varieties. Application of surface coating as two-component wide, mainly for floor coatings, anti-corrosion coatings, pre-membrane coating, the overall performance of two-component coating as comprehensive.