摘要： 针对轮胎老化报废问题,制备了聚丙烯酸酯改性水性聚氨酯涂料。设计了性能对比实验方案和加速老化实验,检测涂料的常规性能、调试最佳基料配比并在此基础上检验其对轮胎的防护性能。实验研究表明,在聚丙烯酸酯(PA)中引入甲基丙烯酸乙酰乙酸乙酯(AAEM)单体能有效提高复合涂料的力学性能,用量为5%左右时力学性能最优。经热氧/冷凝/紫外线复合环境加速老化后,涂覆涂料的轮胎其拉伸强度及断裂伸长率均有较大提升。SEM研究表明,涂料添加AAEM后被防护胎料表面形态更加完整,涂膜防护性能更加优良。

关键词: 改性, 水性聚氨酯, 轮胎, 防老化, 力学性能

Abstract: For the tire aging disposal issue. Polyacrylate modified waterborne polyurethane coatings is prepared. Performance contrast experiment scheme is designed in order to detected conventional performance of coatings and obtaining best proportion of basic material. Studies show that the mechanical properties of coatings are effectively improved because AAEM is introduced into PA and amino into PU and thethe performance is best when PA/PU is 1/2. Stability of composite coating liquid is excellent and membrane structures is good which is fit for long-term protection of tyre via infrared detection and electronic scanning analysis.

Key words: The modified waterborne polyurethane, Performance contrast experiment, Me-chanical properties, Mechanical properties of the coating