多组元协同作用对PPR低温冲击强度的影响  

The Effect of Mult-component Synergy on the Low Temperature Impact Strength of PPR

作　　者：常净芳 廖秋慧[1] 成威[1] 曹云龙 

机构地区：[1]上海工程技术大学材料工程学院,上海201620 [2]飞雕电器集团有限公司,上海201614

出　　处：《塑料工业》2016年第4期116-119,123,共5页China Plastics Industry

基　　金：上海工程技术大学研究生科研创新资助项目(15KY0507)

摘　　要：在研究温度对无规共聚聚丙烯(PPR)缺口冲击强度影响的基础上,分别探讨了聚烯烃弹性体(POE)、β成核剂、纳米二氧化硅(Si O2)对PPR复合材料低温冲击强度的影响。通过扫描电镜观察冲击断面的形貌特征,分析能量耗散方式。结果表明,三种填料可协同提高PPR低温冲击强度,在PPR/20%POE/0.1%β成核剂/纳米Si O2四元共混体系中,纳米Si O2的最佳质量分数在2%左右,复合材料的低温冲击强度约为纯PPR的8倍。On the basis of studying the influence of temperature on the notched impact strength of polypropylene random （PPR）, the effects of polyolefin elastomer （POE）, β nucleating agent and nano-SiO2 on the low temperature impact strength of PPR composites were discussed. The morphology characteristics of impact section were observed by scanning electron microscope, and the methods of energy dissipation were analyzed. The results show that three kinds of fillers can synergistically improve the low temperature impact strength of PPR. The best content of nano-SiO2 is about 2% in the blend system of PPR/20% POE/0. 1% β nucleating agent/nano-SiO2, and the low temperature impact strength of the composite is almost 8 times as high as that of virgin PPR.

关 键 词：无规共聚聚丙烯 聚烯烃弹性体 Β成核剂 纳米二氧化硅 低温冲击强度 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]