超支化分散剂对PP/CaCO_3复合材料性能的影响  

Effect of Hyperbranched Dispersant on the Property of PP/CaCO_3 Composites

作　　者：郭栋[1] 陆绍荣[1] 黄志义[1] 罗崇禧[1] 刘括[1] 

机构地区：[1]桂林理工大学有色金属及材料加工新技术教育部重点实验室,广西桂林541004

出　　处：《塑料工业》2011年第7期103-106,共4页China Plastics Industry

基　　金：广西科技攻关项目(0992022-4);广西自科基金项目(0991003Z;0842003-4A);广西高校优秀人才资助计划(08817)

摘　　要：以丙烯酸甲酯和二亚乙基三胺为原料,通过缩聚反应制备了一种水溶性端氨基超支化聚合物(HBP-NH2),以其与硬脂酸酯化反应制备而得超支化分散剂(HBPR),采用傅立叶红外光谱(FTIR)对其结构进行表征。将该超支化分散剂作为碳酸钙(CaCO3)/聚丙烯(PP)复合材料的界面相容剂,研究其对复合材料的力学性能、热性能和微观结构的影响,提出复合材料界面增容的机理。实验结果表明:该超支化分散剂处理后的PP/CaCO3复合材料,其界面相容性得到很大的提高,其力学性能提高显著,冲击强度比未处理的复合材料提高了53.6%。A water-soluble amino-terminated hyperbranched polymer （HBP-NH2 ） was synthesized from methyacrylate and diethylene triamine by polycondensation. With stearic acid grafted and got a hyperbranched dispersant, the product was characterized by means of FTIR analysis and used as the compatibilizer of PP/CaCO3 composites. The mechanical and thermal properties and micro-structure of composites were characterized and the interface compatibility mechanism of the composite was proposed. Results showed that the interface compatibility of the PP/CaCO3 was improved after treatment with hyperbranched dispersant, and the mechanical properties were greatly improved. Impact strength was 53.6% higher than that of untreated systems.

关 键 词：端氨基超支化 分散剂 聚丙烯 复合材料 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]