烷基化纳米SiO_2/MMA乳液聚合物及其对PC的改性研究  

PREPARATION AND ANALYSIS OF EMULSION POLYMER OF ALKYLABLE NANO-SiO_2/MMA AND ITS MODIFYING EFFICIENCY TO PC

作　　者：钱翼清[1] 赵平[1] 王卫华[1] 

机构地区：[1]南京化工大学材料科学与工程学院,210009

出　　处：《工程塑料应用》2002年第1期1-4,共4页Engineering Plastics Application

基　　金：高分子材料工程国家重点实验室资助项目(1998);江苏省科委资助项目(BJ98062)

摘　　要：用乳液聚合方法制备了烷基化纳米SiO_2/MMA孔液聚合物,用TEM、FTIR分析研究了乳液聚合物的结构。结果表明,该乳液聚合物的粒子基本呈球形,由核、壳组成,中心为SiO_2核,外围为PMMA壳,核壳之间存在化学键。在适量第三组分配合下,炕基化纳米SiO_2/MMA乳液聚合物能大幅度提高PC的韧性、加工流动性及耐热性。同时对其增韧机理也进行了研究。The structure of emulsion polymeric products of nano-Si02/MMA was analysized and researched by TEM and FT-IR. The results indicate that particles of emulsion polymeric products are approximately ball shape, the particle consists of centred core (SiO2) and shell (PMMA) around core and chemical bonds exist between core and shell of alkylable-nano-silica/PMMA. In addition, PC was toughened notably, process flowability and heat resistance of PC were raised by core-shell particles of alkylable nano-silica/PM-MA with cooperation of third component. Its toughening mechanism was also studied.

关 键 词：烷基化 纳米SiO2 MMA 乳液聚合物 PC 改性 研究 聚碳酸酯 甲基丙烯酸甲酯 结构表征 增韧机理 

分 类 号：TQ323.41[化学工程—合成树脂塑料工业]