Polyurethane (Plyurethane) is the abbreviation of urethane resin, and the polymer compound containing repeated -NH-COO-groups in the main chain is generally called polyurethane. Generally, polyurethane is prepared by reacting dibasic or polybasic organic isocyanates with hydrogen-containing compounds (such as polyether polyols or polyester polyols). The article "Research Progress on the Aging Mechanism of Polyurethane Coatings" is mainly based on the summary of the research progress on the aging mechanism of polyester urethane, and expounds the mechanism of thermal degradation, photodegradation, oxidative degradation and polyester ammonia hydrolysis of polyurethane, and summarizes the side Effects of Temperature, UV Light, Oxygen and Water on the Aging of Polyurethanes. In addition, the ways to stabilize polyurethane coatings are pointed out, and the commonly used traditional organic stabilizers are briefly introduced.
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