PGMA/(Al)_2O_3制备及其对环氧树脂体系性能的影响  

Preparation of PGMA/(Al)_2O_3 and Its Effect on Properties of Epoxy Resin System

作　　者：王蕊欣[1] 高保娇[1] 王建龙[1] 章艳[1] 

机构地区：[1]中北大学化工与环境学院,山西太原030051

出　　处：《塑料科技》2008年第8期50-54,共5页Plastics Science and Technology

基　　金：中北大学校青年科学基金资助

摘　　要：将带有环氧基的功能性单体甲基丙烯酸缩水甘油酯(GMA)接枝聚合在微米级氧化铝颗粒表面,制备了接枝微粒PGMA/(Al)_2O_3。考察了各种因素对接枝率的影响;利用红外光谱、扫描电镜表征了PGMA/(Al)_2O_3;并通过扫描电镜观察了PGMA/(Al)_2O_3在环氧树脂中的分散情况,初步研究了PGMA/(Al)_2O_3对环氧树脂体系的增强增韧性能。结果表明:表面引发自由基聚合反应可以成功制备复合粒子PGMA/(Al)_2O3,其接枝率随引发剂浓度和氧化铝与GMA质量比的增大先增大后减小;将PGMA/(Al)_2O_3填充到环氧密封材料中后,氧化铝颗粒在环氧树脂中分散良好,其复合材料的韧性明显高于未改性Al2O3填充的复合材料。Poly（glycidyl methacrylate） （PGMA）/Al2O3 grafted particles were prepared by grafting glycidyl methacrylate monomer onto the surface of Al2O3 particles. The influence factors of grafting ratio were investigated. PGMA/Al2O3 was characterized by IR and SEM. The distribution of PGMA/Al2O3 in epoxy resin was observed. The effect of PGMA/Al2O3 on mechanical properties of epoxy resin was also studied. The results show that： PGMA/Al2O3 compound particles could be prepared by surface-initiated radical polymerization, its grafting ratio increases at first and then decreases with the increase of initiator concentration and mass ratio of Al2O3/GMA; adding PGMA/Al2O3 into epoxy sealing material, the distribution of Al2O3 in epoxy resin is excellent, the impact strength of PGMA/Al2O3/epoxy composite is better than that of Al2O3/epoxy composite.

关 键 词：环氧树脂 甲基丙烯酸缩水甘油酯 氧化铝 接枝聚合 韧性 

分 类 号：TQ323.5[化学工程—合成树脂塑料工业]