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采用间苯二酚二缩水甘油醚和三苯酚乙烷在催化剂作用下合成了三官能团环氧树脂(TEP)。采用FTIR对产物进行了结构表征,验证了反应原理。研究了反应时间和催化剂用量对产物性能的影响。通过TGA、DMA分析和耐腐蚀性测试将TEP与国外784树脂的性能进行了对比。结果表明,合成反应时间45 min,催化剂加入质量分数0.05%为宜。TEP固化膜具有较好的热稳定性,起始分解温度369.6℃,比784树脂高19.5℃,550℃时残余量29.25%,玻璃化转变温度150.2℃,具有良好的耐腐蚀性。
Trifunctional epoxy resin (TEP) was synthesized by the reaction of resorcinol diglycidyl ether and trisphenol ethane. The product was characterized by FTIR to verify the reaction principle. The effects of reaction time and amount of catalyst on the product performance were studied. The TEP was compared with the foreign 784 resin by TGA, DMA analysis and corrosion resistance test. The results showed that the optimum reaction time was 45 min and the catalyst content was 0.05%. TEP cured film has good thermal stability, the initial decomposition temperature of 369.6 ℃, higher than the 784 resin 19.5 ℃, the residual amount of 29.25% at 550 ℃, the glass transition temperature of 150.2 ℃, has good corrosion resistance.