PBMMA改性剂的制备及增韧PBT

Preparation of PBMMA Modifier and Toughening PBT

采用种子乳液的聚合方法制备了核壳聚合物聚丙烯酸丁酯／甲基丙烯酸甲酯／甲基丙烯酸共聚物P（BA／MMA—co--MAA），简称PBMMA，并研究了其对聚对苯二甲酸丁二醇酯（PBT）增韧的效果。乳化剂为0．3g的PBMMA添加到PBT后，使得PBT的缺口冲击强度提高3倍，共混体系的力学性能与种子阶段乳化剂的含量相关，SEM可以证实。

Poly （BA/MMA--co--MAA）, PBMMA, with core--shell polymer was prepared by seeded emulsion polymer- ization. And we studied the modifier toughening poly （polybutylene terel^hthalate）, PBT. When PBMMA add to PBT, with using 0.3g emulsifier, the Notched Charpy impact strength of PBMMA/PBT （20/100） reaches a maximal value, increased to 3 times compared with pure PBT resin. The mechanical results confirmed by DMA and SEM.