低密度聚乙烯接枝烯基双酚A醚对HDPE/PC共混体系性能的影响  

Effect of LDPE-g-DBAE on Property of HDPE/PC Blend

作　　者：徐鸣[1] 李忠明[1] 冯建民[1] 杨鸣波[1] 

机构地区：[1]四川联合大学塑料工程系

出　　处：《塑料工业》1998年第5期25-26,共2页China Plastics Industry

基　　金：国家自然科学基金;国家产学研高技术产业化项目

摘　　要：本文采用烯基双酚Ａ醚接枝低密度聚乙烯（ＬＤＰＥ－ｇ－ＤＢＡＥ）作为高密度聚乙烯／聚碳酸酯（ＨＤＰＥ／ＰＣ）共混体系的增容剂，初步研究了ＬＤＰＥ－ｇ－ＤＢＡＥ对ＨＤＰＥ／ＰＣ体系性能的影响。通过对共混物形态观察、耐热性能及力学性能测试，发现ＬＤＰＥ－ｇ－ＤＢＡＥ对ＨＤＰＥ／ＰＣ体系有良好的增容效果；并发现了增容剂的最佳用量质量比大致为１０％，提高增容剂的接枝率更有利于改善共混物的性能。６５／３５ＨＤＰＥ／ＰＣ共混物的ＨＤＴ为９２℃，拉伸强度３０２ＭＰａ，冲击强度２９８ｋＪ／ｍ２，分别比未加增容剂时的８２℃，２７３ＭＰａ和１５５ｋＪ／ｍ２有较大提高。s Using LDPE grafted with diallyl bisphenol A ether (LDPE-g-DBAE)as compatibilizer,the effect of LDPE-g-DBAE on the property of HDPE/PC blend was studied By means of the observation of the morphology and the test of the heat resistance and mechanical properties of the blend,LDPE-g-DBAE was found to have good compatible effect on HDPE/PC blend,the optimum content of LDPE-g-DBAE in the blend was 10% (by mass),resulting in HDT of 92℃,tensile strength of 30 2 MPa,notched impact strength of 29.8kJ/m 2,much higher than 82℃,27.3MPa and 15 5kJ/m 2 of blend with no LDPE-g-DBAE The increase of the graft ratio of LDPE-g-DBAE was benifit to the improvement of the property of the blend system

关 键 词：高密度聚乙烯 聚碳酸酯 共混 增容剂 改性 

分 类 号：TQ325.12[化学工程—合成树脂塑料工业]