Synthesis of liquid crystalline epoxy resin p-BDEPB and cure kinetics with 3-MeTHPA

摘要：

A liquid crystalline epoxy resin of p-biphenylene di4-(2,3-epoxypropyloxy)benzoate (p-BDEPB) was synthesized from allyl bromide, 4-hydroxy ethyl benzoate and 4,4-dihydroxybiphenyl. Its structure and liquid crystalline behavior were characterized by DSC, 1H-NMR, FTIR, POM and XRD. The results are shown that this compound is smectic liquid crystalline.The melting point of p-BDEPB is 210 ℃ and clearing point is over 300 ℃, the epoxy value is 0.312 mol/100g. The average curing Ea of pBDEPB/3-methyl-tetrahydrophthalic anhydride (MeTHPA) system is 97.2kJ/mol. The gel point of cured-system Tgel is 89.0℃, curing temperature Tcu is 132.5 ℃ and finishing temperature Tf is 146.5℃. The curing reaction can be described by the autocatalytic Sestak-Berggren (S-B) equation, the two reaction orders m and n is 0.23 and 0.74,respectively.

关键词： Liquid crystalline Epoxy resin 4,4-dihydroxybiphenyl Cure Kinetics

作者: Jungang Gao Caiyun Zhang Li Huo Yuanyuan Zhang

作者单位: College of Chemistry and Environmental Science, Hebei University, Baoding 071002, China College of Chemistry and Environmental Science, Hebei University,Baoding 071002,China

会议类型: 国际会议

会议名称: 2009 International Symposium on Liquid Crystal Science and Technology(2009国际液晶科技研讨会)

会议地点: 昆明

会议语种:英文

页码: 71-74

在线出版日期: 2009-08-02（万方平台首次上网日期，不代表论文的发表时间）