含苯并噁唑环氧树脂的合成、固化动力学及热性能  

Synthesis,Curing Kinetics and Thermal Stability of Epoxy Resin Containing Benzoxazole Ring

作　　者：黄慧琳 周云超[2] 刘小云[2] HUANG Huilin;ZHOU Yunchao;LIU Xiaoyun(Shanghai Huayi Resins Co. Ltd, Shanghai 200241, China;Key Laboratory of Specially Functional Polymeric Materials and Related Technology of the Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China)

机构地区：[1]上海华谊树脂有限公司,上海200241 [2]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

出　　处：《功能高分子学报》2019年第3期345-352,共8页Journal of Functional Polymers

摘　　要：通过两步法制备了两种含苯并噁唑结构的环氧树脂双苯并二噁唑型环氧(DAROH-O)树脂与双酚A型苯并噁唑环氧(HOH-O)树脂,采用红外光谱和氢核磁共振波谱分析对树脂的结构进行了表征。结果表明:当以二氨基二苯基甲烷(DDM)为固化剂时,对于DAROH-O/DDM体系,采用Kissinger法和Ozawa法计算得到的表观反应活化能分别为176.92kJ/mol和175.36kJ/mol;对于HOH-O/DDM体系,采用Kissinger法和Ozawa法计算得到的表观反应活化能分别为198.45kJ/mol和196.15kJ/mol。热重分析结果表明这两种环氧树脂固化物的耐热性能均远高于普通双酚A环氧树脂/DDM固化物的耐热性能。固化物的失重过程包括两个阶段,第一阶段的分解出现在350～370℃,第二阶段的分解发生在600℃左右,属于苯并噁唑环的分解。Two kinds of epoxy resin that contain benzoxazole ring, DAROH-O and HOH-O, were prepared. Their molecular structures were confirmed by Fourier transform infrared spectroscopy (FT-IR) and nuclear magnetic resonance (NMR) tests. Differential scanning calorimeter (DSC) measurements showed that the apparent activation energy of the curing reaction for the DAROH-O/DDM system was 176.92 kJ/mol and 175.36 kJ/mol calculated by Kissinger method and Ozawa method, respectively. Correspondingly, the apparent activation energy for the HOH-O/DDM system calculated by these two methods was 198.45 kJ/mol and 196.15 kJ/mol, respectively. The thermogravimetric analysis (TG) revealed that the thermal stability of the two epoxy resins were almost the same. The weight loss process includes two stages: the first weight loss occurs at about 350-370 ℃, and the second weight loss occurs at about 600 ℃, which is attributed to the decomposition of the benzoxazole ring.

关 键 词：苯并噁唑 环氧树脂 耐高温 固化动力学 热性能 

分 类 号：TB35[一般工业技术—材料科学与工程]