纳米碳酸钙填充型粉末丁苯橡胶增韧改性聚氯乙烯  

Nano-CaCO_3 Filled Powder Styrene-Butadiene Rubber Used as Toughening Modifier for Polyvinyl Chloride

作　　者：张周达[1] 陈雪梅(指导)[1] 

机构地区：[1]华东理工大学,国家超细粉末工程研究中心,上海200237

出　　处：《机械工程材料》2012年第5期76-79,共4页Materials For Mechanical Engineering

摘　　要：将纳米碳酸钙填充型粉末丁苯橡胶作为复合改性剂用于聚氯乙烯(PVC)的增韧改性,研究了复合改性剂中纳米碳酸钙含量和复合改性剂加入量对PVC力学性能的影响,并分析了其冲击断口形貌。结果表明:复合改性剂能大幅度提高PVC的缺口冲击强度;当复合改性剂与PVC的质量比为15∶100,复合改性剂中纳米碳酸钙质量分数为70%时,PVC的缺口冲击强度达到最大值22.9kJ.m-2,缺口冲击试样断口呈典型的韧性断面形貌。Nano-CaCOa filled powder styrene-butadiene rubber was used to toughen polyvinyl chloride （PVC）, the effect of the nano-CaCO3 content in compound modifier and the addition of the compound modifier on the mechanical properties of PVC was studied, and the impact fracture morphology was analyzed. The results show that the compound modifier could dramatically increase the notched impact strength of PVC. The maximum notched impact strength was 22.9 kJ · m^-2 when the mass ratio of compound modifier to PVC was 15 ： 100 and the mass fraction of nano-CaCOa in compound modifier was 70%, and a typical flexible fracture morphology was found on the fracture of the notched impact sample.

关 键 词：纳米碳酸钙 填充型粉末丁苯橡胶 聚氯乙烯 增韧 

分 类 号：TQ325.3[化学工程—合成树脂塑料工业]