不同酸酐固化环氧改性PDCPD及其与碳纤维界面结合

Different Anhydride Curing Epoxy Modified PDCPD and Its Interfacial Bonding with Carbon Fiber

环氧树脂/酸酐体系已经被证实能通过共混-共固化方法用于改善环戊二烯/GrubbsⅡ代催化剂体系与商业化碳纤维界面结合能力,但是环氧/酸酐的引入会大幅度提高聚双环戊二烯聚合时间,影响其制件效率。通过对比甲基纳迪克酸酐(NMA)和甲基四氢苯酐(THPA)固化环氧树脂改性聚双环戊二烯的完全固化时间、力学性能、耐热性以及复合材料力学性能,进一步探究了双相树脂体系与碳纤维黏合机制,旨在获得效率与性能可同步提升的聚双环戊二烯复合材料树脂配方。结果表明,尽管THPA固化环氧改性PDCPD聚合时间相比于NMA固化环氧改性PDCPD要大幅度缩短,但是前者与碳纤维界面结合要弱于后者。

The epoxy resin/anhydride system had been proven to improve the interfacial bonding between di⁃cyclopentadiene/GrubbsⅡcatalyst system and commercial carbon fibers through blending and co-curing method.However,the introduction of epoxy/anhydride will significantly increase the polymerization time of polydicyclopentadiene and effect its production efficiency.The curing time,mechanical properties,heat re⁃sistance and composites mechanical properties of nadic methyl anhydride(NMA)and methyl tetrahydroph⁃thalic anhydride(THPA)cured epoxy resin modified polydicyclopentadiene were compared.The bonding mechanism between the biphasic resin system and carbon fibers were explored,aiming to obtain a resin for⁃mula for polydicyclopentadiene composites with higher performance and efficiency.The results show that al⁃though the polymerization time of THPA cured epoxy modified PDCPD is significantly reduced compared to NMA cured epoxy modified PDCPD,the former has weaker interfacial bonding with carbon fibers than the latter.