丙烯酸酯类增韧剂对聚氯乙烯抗冲和加工塑化特性的影响  

Effect of Acrylate Toughening Agent on the Impact and Fusion Characteristics of PVC

作　　者：张宁[1] 任济民[1] 包永忠[1] 黄志明[1] 

机构地区：[1]浙江大学化学工程与生物工程学系化学工程联合国家重点实验室,浙江杭州310027

出　　处：《塑料工业》2010年第3期75-77,89,共4页China Plastics Industry

基　　金：国家科技支撑计划项目课题资助(编号:2007BAE10B01)

摘　　要：以聚丙烯酸丁酯(PBA)为核,以聚甲基丙烯酸甲酯(PMMA)为壳,通过种子乳液聚合制备了具有不同核/壳比的丙烯酸酯类抗冲改性剂(AIM)。透射电镜观察发现,AIM乳胶粒子具有明显的核?壳结构。考察了不同核壳比AIM共混改性聚氯乙烯(PVC)的相态结构和抗冲性能,发现AIM核壳比为60/40～80/20时,增加核壳比对提高AIM对PVC的增韧效果有利。随着AIM加入量增大,PVC树脂加工塑化时间缩短。With poly（butyl acrylate） （PBA） as the core and poly（methyl methacrylate） （PMMA） as shell, through seeded emulsion polymerization, a series of acrylic impact modifiers （AIM） with different core/shell ratio were synthesized. The TEM micrographs showed that AIM latex particles exhibited core-shell structure. The morphology and notched impact strength of poly （vinyl chloride） （PVC） /AIM blends with different core/shell ratio were investigated. It was found that when the core/shell ratio of AIM was 60/40 80/20, the larger the core-shell ratio, the more effective in improving the notched impact strength of PVC blends, and the fusion time of PVC decreased as the addition of AIM increased.

关 键 词：聚氯乙烯 丙烯酸酯类抗冲改性剂 乳液聚合 核-壳结构 增韧 

分 类 号：TQ325.3[化学工程—合成树脂塑料工业]