新抗冲型ACR的合成与研究  

Synthesis and Study of Novel Impact Modifier ACR

作　　者：沈辉[1] 张德震[1] 唐颂超[1] 蒋煜[1] 

机构地区：[1]华东理工大学材料学院,上海200237

出　　处：《塑料工业》2007年第B06期124-126,共3页China Plastics Industry

摘　　要：采用种子乳液聚合法制备了含有PBA\PMMA\PS三种组分的丙烯酸酯类抗冲型改性剂ACR,在ACR的幔层结构中引入接枝剂甲基丙烯酸烯丙酯(ALMA)来完善幔层结构,从而实现核-壳之间良好的结合,用红外光谱(FTIR)和差示扫描量热法(DSC)对ACR的组成和结构进行表征。研究结果表明:由PBA\PMMA\PS三组分构成的ACR在抗冲击性能上要略优于由简单的PBA\PMMA构成的ACR,苯乙烯单体(St)最多可以取代大约1/3壳层的甲基丙烯酸甲酯(MMA),甲基丙烯酸烯丙醋(ALMA)的引入对幔层结构的完善起了显著的作用。Acrylic resin impact modifier ACR composed of poly （ butyl acrylate） （PBA）, poly （ methyl methacrylate）（PMMA） and polystyrene（PS） was synthesized by emulsion polymerization. ALlyl methacrylate （ALMA） as a compatilizer was brought into the middle layer. The ACR was characterized by means of FTIR and DSC. The results indicated that the novel ACR with the 3 components had superior impact modifying properties to the ACR only composed of PBA/PMMA. The MMA in shell layer could be taken place by St one third at most. The addition of ALMA had great contribution to the improve ment of the compatibility between core layer and shell layer.

关 键 词：苯乙烯 ACR 核/壳结构 甲基丙烯酸烯丙酯 

分 类 号：TQ320.1[化学工程—合成树脂塑料工业]