纳米CaCO_3的接枝改性及其填充PVC复合材料的性能  

The gafting modification of nano-CaCO_3 and properties of PVC composites filled with it

作　　者：张玲[1] 牛建华[2] 孙水升[1] 

机构地区：[1]超细材料制备与应用教育部重点实验室,华东理工大学材料科学与工程学院,上海200237 [2]浙江华之杰塑料建材有限公司,浙江湖州313200

出　　处：《聚氯乙烯》2008年第8期16-20,共5页Polyvinyl Chloride

基　　金：国家高科技研究发展计划(2006AA03Z358);国家自然科学基金(20706015;50703009);上海市科技启明星计划(06QA14013;07QA14014);上海市基础研究重大项目(07DJ14001);教育部博士点基金(20070251022);上海市重点实验室专项(07DZ22016;06DZ22008);上海市科委纳米专项(0752nm010;0652nm034)

摘　　要：采用表面原位接枝聚合在纳米CaCO3颗粒表面引入聚甲基丙烯酸甲酯(PMMA)或聚丙烯酸丁酯(PBA),用共混法制备了纳米CaCO3/PVC复合材料,研究了不同界面特性时纳米CaCO3/PVC复合材料的力学性能。研究结果表明:通过表面原位接枝聚合反应可以在纳米CaCO3颗粒表面接枝PMMA和PBA;表面接枝聚合改性大大促进了纳米CaCO3粒子在PVC基体中的分散行为,增加了复合材料的拉伸强度以及与聚合物的界面粘接强度,但复合材料的冲击强度有所下降。Nano-CaCO3 particles were modified by PMMA or PBA through in-situ surface grafting polymerization and then nano-CaCO3/PVC composites were prepared via a melt blending method.The mechanical properties of nano-CaCO3/PVC composites with different interfacial characteristics were studied.The results showed that in-situ suface grafting polymerization could graft PMMA and PBA onto the surface of nano-CaCO3 particles,which could promote the dispersion behavior of nano-CaCO3 particles in PVC matrix and increase the tensile strength and interfacial adhesion strength of composites,but the impact srength of composites was decreased to some extent.

关 键 词：PVC 纳米CACO3 接枝聚合 性能 

分 类 号：TB332[一般工业技术—材料科学与工程]