一种新型混杂多官能团齐聚物的固化反应  

Curing Reaction of A Novel Multifunctional Hybrid Oligomer

作　　者：石超[1,2] 钱建华[1,2] 付建辉[2] 黄锐[2] 刘坐镇[1,2] 

机构地区：[1]华东理工大学材料科学与工程学院,特种功能高分子材料及相关技术教育部重点实验室,上海200237 [2]华东理工大学华昌聚合物有限公司,上海防腐蚀新材料工程技术研究中心,上海200237

出　　处：《功能高分子学报》2015年第2期214-219,共6页Journal of Functional Polymers

基　　金：上海市重大科技攻关项目(12dz1100401)

摘　　要：以N,N,N′,N′-四缩水甘油基-4,4′-二氨基二苯甲烷(TGDDM)和丙烯酸(AA)为原料,合成了一种既含有环氧基又含有乙烯基酯基团的新型混杂多官能团齐聚物树脂(MEVO)。以过氧化甲乙酮(MEKP)为引发剂、甲基四氢苯酐(MeTHPA)为环氧固化剂与MEVO共混制备了MEVO-MEKP、MEVO-MeTHPA和MEVO-MEKP-MeTHPA 3种固化体系。通过非等温DSC和FT-IR研究了MEVO的固化反应,求得了各体系表观反应活化能。结果表明:在MEVOMEKP固化体系中,乙烯基酯按照自由基聚合机理固化,对环氧基没有影响;在MEVO-MeTHPA固化体系中,环氧基固化过程中乙烯基酯会发生热固化;在MEVO-MEKP-MeTHPA固化体系中,乙烯基酯和环氧基按各自机理固化并互相影响。A novel multifunctional hybrid oligomer（MEVO） containing both epoxy and vinyl ester group was synthesized using N, N, N＇, N＇-tetraglyeidyl 4,4＇-diaminodiphenyl methane（TGDDM） and acrylic acid （AA） as raw materials. Three curing systems, MEVO-MEKP, MEVO-MeTHPA and MEVO-MEKP- MeTHPA were prepared by blending MEVO with the initiator methyl ethyl ketone peroxide（MEKP）, and the epoxy curing agent methyl tetrahydrophthalic anhydride（MeTHPA）. The curing reaction was investigated by nonisothermal DSC and FT-IR. Reaction apparent activation energy of each system were calculated. Results showed that vinyl ester cured by free radical polymerization mechanism and had no effect on epoxy group in MEVO-MEKP. Vinyl ester thermal cured in the process of epoxy curing in MEVO-MeTHPA. Vinyl ester and epoxy group cured according to respective mechanism and influenced each other in MEVO- MEKP-MeTHPA.

关 键 词：多官能团齐聚物 固化动力学 TGDDM 非等温DSC 

分 类 号：O631[理学—高分子化学]