高分子包覆纳米CaCO_3的制备及其在PS中的应用  

Encapsulation of Nano-CaCO_3 and Its Application in PS

作　　者：李谷[1] 王玉海[1] 麦堪成[1] 

机构地区：[1]中山大学化学与化学工程学院,广东广州510275

出　　处：《中国塑料》2006年第12期31-34,共4页China Plastics

基　　金：中山大学化学与化工学院第四届创新化学实验基金项目(批准号:03025)

摘　　要：用丙烯酸(AA)与苯乙烯(St)及丙烯酸甲酯(MA)与苯乙烯(St)共聚包覆改性纳米 CaCO_3,通过红外光谱及透射电镜对改性前后纳米 CaCO_3的结构和微观形貌进行了表征,利用改性后的纳米 CaCO_3填充聚苯乙烯(PS),测试了 PS/纳米 CaCO_3复合材料的力学性能。结果表明包覆改性后的纳米 CaCO3对 PS 有增强增韧作用。经 MA 与 St共聚包覆改性的纳米 CaCO_3比用 AA 与 St 共聚改性的纳米粒子更能提高 PS/纳米 CaCO_3复合材料的力学性能,其拉伸强度及无缺口冲击强度分别比纯 PS 提高14%和21%。Nano-CaCO3 was encapsulated by copolymerization of acrylate （AA） and styrene （St） or methylacrylate（MA） and St in toluene solution and was characterized by FTIR and TEM after extracting by acetone. The results showed that copolymers could be encapsulated on to the surface of nano-CaCO3 by chemical bond. The mechanical properties of PS/nano-CaCO3 composites showed that nano-CaCO3 modified by MA and St copolymer could reinforce and toughen PS. The tensile strength and non-notched impact strength of PS/nano-CaCO3 composites modified by MA and St copolymer were higher than those of PS/nano-CaCO3 composites modified by AA and St copolymer, and improved by 14 % and 21% than pure PS, respectively.

关 键 词：聚苯乙烯 纳米碳酸钙 表面改性 包覆 力学性能 

分 类 号：TQ320.4[化学工程—合成树脂塑料工业]