Studies on Properties of Epoxy Resin Toughed by a Funetionalized Polymer Containing Liquid Crystalline Unit

Abstract

Abstract: Aseries of reactive toughening accelerators(LCEU_PEG) containing both the flexible chain and rigid chain liquid crystal unit were synthesized and used to toughen the epoxy resin/dicyandiamide curing system. The curing reactivity, relationships of dynamic mechanical properties and impact strengths with the amount of LCEU_PEGof the modified systems were investigated. The results showed that impact strength of the modified systems was enhanced for 3～7 times compared with the unmodified system, the modulus of the modified systems were also higher than that of the unmodified curing system.

Key words: Epoxy resin, Toughening, Reactivity, Liquid crystal unit, Impact strength

CLC Number:

O631

TrendMD:

ZHANG Bao-Long, TANG Guang-Liang, SHI Ke-Yu, YOU Ying-Cai, DU Zong-Jie, YANG Jian-Feng, HUANG Ji-Fu . Studies on Properties of Epoxy Resin Toughed by a Funetionalized Polymer Containing Liquid Crystalline Unit[J]. Chem. J. Chinese Universities, 1998, 19(11): 1832.

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Studies on Properties of Epoxy Resin Toughed by a Funetionalized Polymer Containing Liquid Crystalline Unit

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