【摘要】 <正> 一、前言汽车在行驶过程中,车底和车轮挡泥板等经常受到泥沙、碎石和污水等的撞击冲刷,涂在底材表面的涂料极易被破坏而失去防腐能力,底材会很快锈蚀,因而这些部位要涂布具有耐砂石冲击和防腐蚀性能的车底涂料。车底涂料主要有沥青系PVC塑溶胶系和聚氨酯弹性体等几种。沥青系车底涂料是更多还原

【Abstract】 A newly devloped CR-PVC plastisolcoating, appropriate to the protectionof car understructure and mudguardagainst stone chipping on expressway,is made of selected PVC,plasticizersand fillers, etc, with high toughnessand abrasion resistance, reliable longterm corrosion resistance can beprovided. It can also be applied asan effective sealer for welding seamsof car body. Formulation and charscteristics of the PVC plastisol coatings are given.更多还原