摘要
以甲基四氢邻苯二甲酸酐(METHPA)为固化剂,利用端羧基丁腈橡胶(CTBN)改性环氧树脂(EP)制备形状记忆聚合物。研究了形状记忆环氧树脂的力学性能、玻璃化转变温度和形状记忆性能。研究表明,形状记忆环氧树脂的韧性得到明显的提高,Tg得到了相应的下降,形状记忆性能良好,形状固定率皆在97%以上,形状回复率约达100%。
Toughening of a diglycidyl ether of bisphenol-A（ E-51 ）-based epoxy resin and TDE-85 with liquid carboxyl-terminated butadiene acrylonitrile （CTBN） copolymer has been investigated in this research. Shape memory epoxy resin of CTBN/EP was prepared by using tetrahydromethyl-l,3-isobenzofurandione（METHPA） as a curing a- gent. The characteristics of the blends were investigated by tensile test, SEM, DMA and FTIR. Blends with varying proportions of CTBN/EP were studied for their mechanical properties, thermodynamics , glass-transition temperature and shape memory properties. The test results show that the toughness of epoxy resin was improved by adding CTBN. And the glass-transition temperature also decreased accordingly. Moreover, the material exhibited a good shape memo- ry performance, the shape recovery and the shape fixity of this material can achieve 100% and 97% , respectively.
出处
《宇航材料工艺》
CAS
CSCD
北大核心
2015年第1期28-32,共5页
Aerospace Materials & Technology
