偶联剂对nano-ZnO/HDPE复合材料性能的影响  

Effects of Coupling Agents on the Properties of Nano-ZnO/HDPE Composites

作　　者：李亚娜[1] 李树材[2] 

机构地区：[1]天津科技大学包装与印刷工程学院,天津300457 [2]天津科技大学材料科学与化学工程学院,天津300457

出　　处：《塑料科技》2009年第6期31-34,共4页Plastics Science and Technology

摘　　要：通过熔融共混法制备出不同硅烷偶联剂(KH550,KH560)改性的nano-ZnO/HDPE复合材料,并考察了偶联剂及ZnO含量对复合材料性能的影响。结果表明:改性nano-ZnO对HDPE基体起到了明显的增强增韧的效果,当改性nano-ZnO含量为0.2%～0.5%时,复合材料的力学性能最好。此外,nano-ZnO在HDPE中起异相成核剂的作用,从而使体系的熔融温度、结晶温度和结晶度升高。经KH560处理的nano-ZnO/HDPE复合材料的力学性能和结晶性能均优于经KH550处理的nano-ZnO/HDPE复合材料的性能。The nano-ZnO/HDPE composites were prepared by blending HDPE with nano-ZnO particles, which were modified by different kinds of silicon coupling agents of KH550 and KH560 respectively. The effects of coupling agents and the content of ZnO on the properties of the composites were investigated. The results showed that HDPE matrix was toughened and strengthened by adding the modified nano-ZnO, and when the dosage of the nano-ZnO was 0.2~o^0.5~o, the optimal mechanical properties of the composites could be obtained. Moreover, the addition of nano-ZnO had a nucleating effect on the crystallization of HDPE, the melting temperature, crystallization temperature and crystallization degree of the nanocomposites were increased. The composites which filled with the nano-ZnO modified by KH560 showed the better mechanical and crystallization properties than those of KH550 modified nano-ZnO/HDPE composites.

关 键 词：高密度聚乙烯 NANO-ZNO 硅烷偶联剂 

分 类 号：TQ325.12[化学工程—合成树脂塑料工业]