UV光引发环氧树脂前沿聚合及其碳纤维复合材料的力学性能  

FRONTAL CURING OF EPOXY RESIN AND ITS COMPOSITE BY UV RADIATION

作　　者：赵培仲 谭晓明 戴京涛 ZHAO Pei-zhong;TAN Xiao-ming;DAI Jing-tao(Department of Aeronautical and Mechanical Engineering,Naval University of Aviation at Qingdao,Qingdao 266041,China)

机构地区：[1]海军航空大学青岛校区航空机械工程与指挥系,青岛266041

出　　处：《复合材料科学与工程》2020年第5期112-116,共5页Composites Science and Engineering

摘　　要：设计实现了脂环族环氧树脂(CEP)及其和甲基丙烯酸丁酯(BMA)共混物的UV光引发前沿聚合,通过对聚合过程中反应物温度的监测,分析了对热敏感的阳离子引发剂对聚合前沿下移速度的影响。结果发现热敏感的阳离子引发剂的加入能够提高聚合前沿的下移速度。在CEP中引入BMA后,CEP/BMA可以通过UV诱发前沿聚合形成半IPNs结构,聚合前沿下移速度下降。TG和DSC测试表明,BMA的引入降低了玻璃化转变温度和起始降解温度。以CEP或CEP/BMA为基体,以碳纤维为增强相制备复合材料,可以实现UV快速固化,并具有较好的力学性能。UV-induced frontal curing behaviors of epoxy resin systems including not only the photoinitiator but also the thermal initiator were studied.Increase of the content of thermal initiator can increase frontal rate obviously.The frontal curing of CEP/PBMA semi-IPN systems were also studied.Compared with pure epoxy resin,the frontal rate of semi-IPN is lower.Without the thermal initiator,the front propagating of the semi-IPN can not be sustained.TG and DSC results show that the beginning degradation temperature and glass transition temperature decrease with the increase of the BMA weight percent.Carbon fiber fabric reinforced composite materials based on epoxy resin systems were prepared successfully using UV radiation.The epoxy resin matrixes include pure epoxy and EP/PBMA semi-IPN systems.According to the tensile testing results,with the increase of BMA weight percent,the tensile strength of composite decreases gradually.

关 键 词：前沿聚合 环氧树脂 UV光固化复合材料 互穿聚合物网络(IPNs) 

分 类 号：TB332[一般工业技术—材料科学与工程]