CTBN/CE共聚体系形状记忆性能研究  

Shape Memory Effects of CTBN/CE Copolymers

作　　者：牛磊[1] 朱光明[1] 王坤[1] 魏堃[1] 宋蕊[1] 

机构地区：[1]西北工业大学应用化学系,西安710129

出　　处：《航空材料学报》2013年第3期69-73,共5页Journal of Aeronautical Materials

摘　　要：用液体端羧基丁腈(CTBN)和氰酸脂(CE)在一定条件下,经适度共聚,制备出一种新型具有较高玻璃化转变温度(Tg)的氰酸酯树脂形状记忆体系。运用红外,动态力学性能分析,力学性能分析,形状记忆性能分析等方法对该体系进行了研究。结果表明:CTBN适当含量可以使氰酸酯树脂具有优异的形状记忆性能;最低的Tg为138℃,体系的最大形变回复率为100%,最大形变恢复速率0.024 s-1,最大拉伸形变为51%。在120℃/2h+140℃/2h+160℃/2h+180℃/1h的固化工艺下体系基本完全反应。A novel shape memory resin system with high glass transition temperature（Ts） was prepared by the appropriate copolymerization of carboxy-terminated butadience acrylonitrile copolymer （CTBN） and cyanate ester （CE）. This system was characterized by IR, dynamic mechanical analysis（DMA）. And its shape memory properties, mechanical properties were also investigated. The results show that the block coplymer of proper content of CTBN and cyanate ester resin could exhibit excellent shape memory performance. The lowest Ts is in the temperature of 138℃ , the largest deformation recovery rate of system is 100% , the maximum deformation recovery rate is 0. 024 s-1 ; the maximum tensile deformation is 51%. And under the curing process of 120℃/2h ＋ 140℃/2h ＋ 160℃/2h ＋ 180℃/ lh, the system tends to be completely cured.

关 键 词：氰酸酯树脂 端羧基液体丁腈 形状记忆效应 

分 类 号：TB381[一般工业技术—材料科学与工程]