端羧基丁腈橡胶改性环氧形状记忆聚合物

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端羧基丁腈橡胶改性环氧形状记忆聚合物
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作者单位:中南大学材料科学与工程学院
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中图分类号:TQ323. 5
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Modified Shape Memory Epoxy by Blending CTBN Liquid Rubber

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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%。

Abstract:

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-1,3-isobenzofurandione(METHPA) as a curing agent.

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 memory

performance, the shape recovery and the shape fixity of this material can achieve 100% and 97%, respectively.

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李芝华.端羧基丁腈橡胶改性环氧形状记忆聚合物[J].宇航材料工艺,2015,45(1).

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在线发布日期: 2016-11-28
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