乙烯基侧链环氧树脂对E-51/NBR体系的影响  

Effects of vinyl side chain epoxy resin on E-51/NBR system

作　　者：翟燕燕[1] 张军营[1] 

机构地区：[1]北京化工大学粘接材料与原位固化实验室材料科学与工程学院,北京100029

出　　处：《化工新型材料》2007年第8期6-7,12,共3页New Chemical Materials

基　　金：国家自然基金(20376006);北京化工大学青年教师基金(QN0235);北京市教委重点学科建设项目(XK100100433;XK100100540)

摘　　要：采用新型乙烯基侧链环氧树脂(VE)与E-51环氧树脂/液体丁腈橡胶体系共混,用万能材料试验机、动态力学分析仪和扫描电镜表征了VE的含量对树脂/橡胶体系力学性能、玻璃化转变温度(Tg)、微观相态结构的影响。结果表明,利用VE与E-51、丁腈橡胶良好的相容性可以显著改善树脂/橡胶体系的相容性;添加了VE后,用液体丁腈橡胶改性过的环氧树脂韧性提高,并保持了较好的力学强度;当VE/E-51=4/6,NBR含量为20%(wt)时,其拉伸强度比纯E-51/NBR体系提高11.9%,弯曲强度提高31.3%,断裂伸长率提高14.8%;体系的Tg、微观相态结构都随VE的含量呈现出有规律的变化。　A novel kind of vinyl side chain epoxy resin was blended with the E-51/NBR modification system.Then the mechanical properties,glass transition temperature and microscopic phase morphology were tested.Results showed that after adding the vinyl side chain epoxy resin,the toughness of NBRmodified E-51 system was increased.When the VE/E51 was 4/6,the content of NBR was 20%（wt）,the tensile strength,flexural strength and percentage of breaking-elongation were increased by 11.9%,31.3%,14.8% separately;the glass transition temperature and microscopic phase morphology changed regularly along with the concentration of vinyl side chain epoxy resin.

关 键 词：乙烯基侧链环氧树脂 E-51 液体丁腈橡胶 相容性 

分 类 号：TQ330.1[化学工程—橡胶工业]