摘要
研究发现由分段乳液聚合丙烯酸丁酯、甲基丙烯酸甲酯、甲基丙烯酸缩水甘油酯制备的三层核壳结构共聚体和少量环氧树脂(含固化剂及促进剂)与PVC在适当配比下共混,可使改性PVC的抗冲击性能明显提高。考察了共混体系的组成与其冲击强度及断裂形态之间的关系。
Core-shell particles for toughening PVC were prepared by sequential emulsion polymerization of butyl acrylate(BA) , methyl methacrylate(MMA) and glycidyl methacrylate (GMA). Blending of these particles and small amounts of epoxy resin, including curing agent and accelerator, together with PVC gives materials with greatly enhanced impact strength at a optimized weight fraction. Dependence of impact strength and fracture morphology of the toughened PVC material upon the variation of blending composition has been evaluated and discussed in terms of the fracture mechanisms.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
1993年第4期578-581,共4页
Chemical Journal of Chinese Universities
关键词
核壳结构
共聚体
环氧树脂
PVC
Core-shell copolymer, Epoxy resin, PVC, Glycidyl methacrylate
