PVC共挤彩色型材表面变色分析  

Analysis of surface discoloration of colored PVC co-extruded profiles

作　　者：冯伟刚 

机构地区：[1]哈尔滨中大型材科技股份有限公司,黑龙江哈尔滨150078

出　　处：《聚氯乙烯》2014年第12期22-27,共6页Polyvinyl Chloride

摘　　要：介绍了颜色与颜料的概念、分类等,分析了PVC/PVC共挤彩色型材与ASA/PVC共挤彩色型材表面变色的原因。结果表明:1PVC/PVC共挤彩色型材的表面变色主要是PVC树脂降解加速颜料褪色和颜料本身褪色共同作用的结果;2ASA/PVC共挤彩色型材的表面变色主要是颜料本身褪色,ASA树脂基本没有变化。The concept and classification of color and pigment were introduced. The reasons for surface discoloration of colored PVC/PVC co-extruded profiles and colored ASA/PVC co-extruded profiles were analyzed. The results showed that： ① the surface discoloration of colored PVC/PVC co-extruded profiles was mainly caused by the joint action of pigment fading accelerated by PVC resins＇ degradation and pigment fading itself; ② the surface discoloration of colored ASA/PVC co-extruded profiles was mainly caused by the pigment fading itself, since ASA resins did not degrade substantially

关 键 词：PVC 型材 变色 ASA 颜料 

分 类 号：TQ325.3[化学工程—合成树脂塑料工业]