文献类型：期刊文献

中文题名：不同结构的ACR核壳粒子增韧聚碳酸酯的机理

英文题名：Mechanism of Polycarbonate Toughened by ACR Core-Shell Particles with Different Structures

作者：徐会军[1];唐颂超[1];杨龙[1]

机构：[1]华东理工大学材料科学与工程学院,上海市先进聚合物材料重点实验室,上海200237

年份：2009

期号：3

起止页码：276

中文期刊名：功能高分子学报

外文期刊名：Journal of Functional Polymers

收录：CSTPCD;;北大核心:【北大核心2008】；CSCD:【CSCD2011_2012】；

语种：中文

中文关键词：聚碳酸酯;ACR;GMA;冲击强度;断裂韧性

外文关键词：polycarbonate; ACR; GMA; impact strength; fracture toughness

摘要：用自制的核壳结构丙烯酸酯类共聚物(ACR)与聚碳酸酯(PC)共混制成共混材料(PC-ACR),考察了ACR的粒径以及ACR的壳层引入甲基丙烯酸缩水甘油酯(GMA)单体后对PC-ACR共混物冲击强度的影响。壳层引入GMA的ACR提高PC缺口韧性的效果并不明显;而ACR的粒径对PC-ACR冲击韧性的影响较大。运用J积分断裂韧性分析比较了ACR粒径对共混物断裂过程中弹性形变区-塑性形变区能量吸收能力的影响。塑性形变作为主要能量吸收途径在提高共混物韧性方面起主要作用,粒径为177.5 nm的ACR提高PC的断裂韧性效果最好,与悬臂梁冲击实验得到的冲击强度数据一致。
PC-ACR blends was prepared by blending polycarbonate（PC） with acrylic copolymer（ACR） which was self-made.Influence of modifier size and glycidyl methacrylate（GMA） introduced into shell of ACR on impact strength of PC-ACR blends were investigated. Increasing of notch toughness of PC-ACR which ACR shell had introduced GMA is not effective.Whereas diameter of ACR has great influence on impact toughness of PC-ACR blends.The J integral fracture toughness analysis was applied to compare influence of modifier size with energy-absorption ability of elastic deformation and plastic deformation.Plastic deformation as main energy-absorption routes plays a major role in enhancing toughness of blends.ACR with size of 177.5 nm is found to be mostly effective,which is in accordance with the impact strength acquired from izod impact test.