CTBN含量对快速固化环氧胶膜性能的影响  

Influence of CTBN Content on the Property of Fast Setting Epoxy Adhesive Film

作　　者：张思 霍红宇 张宝艳 李栓 ZHANG Si;HUO Hongyu;ZHANG Baoyan;LI Shuan(AVIC Manufacturing Technology Institute Composite Material Center,Beijing 101300,China)

机构地区：[1]中国航空制造技术研究院复合材料技术中心,北京101300

出　　处：《高科技纤维与应用》2020年第4期33-40,共8页Hi-Tech Fiber and Application

摘　　要：针对目前快速固化复合材料用环氧胶膜固化速率慢,与预浸料工艺匹配性差的实际问题,开展快速固化环氧胶膜的研制,探索端羧基液体丁腈橡胶(CTBN)的含量对于快速固化环氧胶膜性能的影响。通过对胶膜的红外光谱、凝胶时间、差示扫描量热法(DSC)等基本理化性能的分析,得出CTBN改性的环氧树脂胶膜可以实现与ACTECH 1201快速固化预浸料的工艺匹配;通过单搭接剪切、滚筒剥离等力学性能测试,得出CTBN含量占环氧树脂体系15 wt%时,该胶膜粘接快速固化复合材料的单搭接剪切强度可达24.6 MPa,滚筒剥离强度可达55.7 MPa,比未使用胶膜时分别提高了36%和84%,均满足快速固化胶膜使用需求。The epoxy adhesive film which was used for the fast curing composite material was studied,because of the actual problem of slow curing rate of epoxy adhesive film for fast curing composite materials and poor compatibility with prepreg process.The epoxy adhesive film with different content carboxyl-terminatedpoly(butadiene-co-acrylonitrile)(CTBN)was prepared.The influence of CTBN content on adhesive performance was investigated by infrared spectroscopy,gelation time and differential scanning calorimetry(DSC).The adhesive performance of single lap shear and roller stripping was also studied.The results show that CTBN modified epoxy resin film can match the curing processibility of ACTECH 1201 fast curing prepreg.When the CTBN content was 15 wt%of the epoxy resin system,the single lap shear strength of the adhesive film was 24.6 MPa and the roller stripping strength reached 55.7 MPa,up 36%and 84%,respectively.These properties meet the requirements of the fast curing adhesive film used in the composite material.

关 键 词：环氧胶膜 端羧基液体丁腈橡胶 单搭接剪切 滚筒剥离 

分 类 号：TB332[一般工业技术—材料科学与工程] V414.8[航空宇航科学与技术—航空宇航推进理论与工程]