耐高温环氧树脂增韧体系的研究  

Study on Toughening of Heat-resistant Epoxy Resin

作　　者：张铭[1] 王成忠[1] 武德珍[1] 于运花[1] 杨小平[1] 

机构地区：[1]北京化工大学材料科学与工程学院,北京100029

出　　处：《塑料工业》2004年第5期11-13,共3页China Plastics Industry

基　　金：国家 8 63计划资助项目 ( 2 0 0 1AA3 3 5 0 3 0 )

摘　　要：使用双酚A型环氧乙烯基酯树脂 (VER)与双酚F型环氧树脂 (EP)同步固化的方法 ,对环氧树脂进行增韧 ;采用DSC研究了混合体系的固化反应过程 ,对固化材料的力学性能和热机械性能进行了测试 ,并用扫描电子显微镜 (SEM)表征其形态结构。结果表明 ,当m (VER) :m (EP) =90∶10时 ,固化材料的的玻璃化转变温度达到 2 0 7 3℃ ,分别比纯环氧树脂和纯VER树脂高 2 5℃和 75℃ ;当m (VER) :m (EP) =5 0∶5 0时 ,材料的冲击强度达到了 8 0 8kJ/m2 。The toughening of epoxy resin was made by means of simultaneous curing of bisphenol-F-epoxy resin (EP) with bisphenol-A-vinyl ester resin (VER). The curing behavior of the blend systems was studied by using differential scanning calorimetry(DSC).Dynamical mechanical thermal analysis (DMTA) and scanning elecron microscope (SEM) were used to determine the mechanical properties and heat resistance to characterize the microstructures of the samples. The results showed that when m(VER)∶m(EP)=90∶10, the glass transition temperature came up to 207.3 ℃, 25℃ and 75℃ higher than those of EP and VER respectively. When m(VER)∶m(EP)=50∶50, the impact strength of the blend system came up to 8.08 kJ/m 2, the blend system had the best overall mechanical properties and better heat resistance.

关 键 词：环氧树脂 环氧乙烯基酯树脂 增韧体系 VER EP DSC分析 拉伸强度 

分 类 号：TQ3235[化学工程—合成树脂塑料工业]