纳米CaCO_3填充PVC复合材料的力化学增强增韧研究  

Studies on the mechanochemical reinforcing and toughening of nano-CaCO_3 filled PVC composites

作　　者：田满红[1] 郭少云[1] 

机构地区：[1]高分子材料工程国家重点实验室四川大学高分子研究所,四川成都610065

出　　处：《聚氯乙烯》2003年第6期22-25,共4页Polyvinyl Chloride

基　　金：国家重点基础研究项目(G1999046800);国家863资助项目

摘　　要：利用振动球磨机对纳米CaCO3进行表面改性,将改性的纳米CaCO3加入PVC中制备PVC/CaCO3复合材料,并对其力学性能进行了研究。结果表明:通过力化学改性CaCO3后,可使其在PVC基体中的分散性和界面相互作用增强,导致其冲击强度、断裂伸长率、拉伸模量大幅增加,而拉伸强度保持不变甚至略有增加。A vibration grinding mill was used to treat the surface of nano-CaCO3.The obtained modified nano-CaCO3 was added into PVC to prepare PVC/CaCO3 composites and their mechanochemical properties were studied.The results showed that the mechanochemical treatment of nano-CaCO3 could improve the compatibility and the interfacial strength between the nano-CaCO3 and the PVC matrix,resulting the great increase of impact strength,breaking elongation and tensile modulus of the composites,while the tensile strength didn't change or even increase a little.

关 键 词：纳米碳酸钙 PVC 力化学 强度 韧性 改性 

分 类 号：TQ325.3[化学工程—合成树脂塑料工业]