相容剂LLDPE-g-MAH的制备及其对LLDPE/PA6共混性能的影响  

Preparation of LLDPE-g-MAH Compatilizer and Its Influence on Property of LLDPE/PA6 Blend

作　　者：洪若瑜[1] 李建华[1] 王凯[1] 李洪钟[2] 

机构地区：[1]苏州大学化学化工学院江苏省有机合成重点实验室,江苏苏州215123 [2]中国科学院过程工程研究所多相反应重点实验室,北京100080

出　　处：《塑料工业》2008年第9期48-51,70,共5页China Plastics Industry

基　　金：国家自然科学基金(No.20476065和No.20736004);中科院多相反应重点实验室基金(No.2006-5);中科院煤转化国家重点实验室基金(No.2006-902);江苏省有机重点实验室基金;国家教委留学回国基金;苏州大学211工程资助项目

摘　　要：研究了以过氧化二苯甲酰为引发剂,线型低密度聚乙烯接枝马来酸酐的反应。采用正交实验方法考察了引发剂用量、单体浓度、反应时间及反应温度等对接枝反应的影响,优选出了接枝条件。将LLDPE-g-MAH作为一种增容剂加入到LLDPE/PA6共混体系中,考察了LLDPE/PA6共混体系中各相的相容性及共混物的力学性能。结果表明:LLDPE-g-MAH能有效地增强LLDPE/PA6共混体系两相界面的相互作用,改善LLDPE和PA6的相容性,为效果较好的增容剂。With benzoyl peroxide （BPO） as initiator, the graft polymerization of maleic anhydride （MAH） onto LLDPE was studied. The effects of the content of initiator, the concentration of LLDPE and MAH, the reaction time and temperature on the grafting rate were studied by means of orthogonal experiment, and the optimum conditions for the polymerization were obtained. The obtained LLDPE-g-MAH was utilized as compatibilizer of LLDPE/PA6 blends. The compatibility and mechanical propeties of the blends were investigated. The results showed the graft copolymer could obviously improve the compatibility of LLDPE/PA6 blend, being a good compatibilizer.

关 键 词：线型低密度聚乙烯 马来酸酐 接枝反应 相容剂 共混 力学性能 

分 类 号：TQ320.1[化学工程—合成树脂塑料工业]