均苯四甲酸二酐固化环氧树脂的工艺及热性能  

Process and thermal properties of EP cured by PMDA

作　　者：秦培中[1] 孙超[1] 王强[1] 曾心苗[1] 

机构地区：[1]北京市射线应用研究中心,辐射新材料北京市重点实验室,北京市100015

出　　处：《合成树脂及塑料》2013年第5期43-45,75,共4页China Synthetic Resin and Plastics

摘　　要：将均苯四甲酸二酐与环氧树脂溶于丙酮中,在一定的温度条件下反应,制备了均一的、有一定固化程度的环氧树脂溶液,该溶液可在常温固化。傅里叶变换红外光谱分析表明,所得产物与预期结构相同,最佳反应时间为6 h。采用差示扫描量热法研究其固化工艺,不同升温速率下,体系的固化温度不同,随升温速率增加,固化温度提升,通过动力学计算得到其固化工艺为100℃固化2 h,150℃固化2 h,后处理180℃固化2 h,按此工艺固化的环氧树脂的耐热性能优于常温固化,起始分解温度达到368℃。The epoxy resin solution with good uniformity and a certain curing degree was prepared by reac- tion of epoxy resin with pyromellitic dianhydride dissolved in acetone at a certain temperature, and the solution could be cured at room temperature. Fourier transform infrared spectroscopy （FTIR） analysis showed that the re- sultant product had the same structure as the expectation, and the optimum reaction time was six hours. The study of curing process by differential scanning calorimetry （DSC） indicated that different heating rates led to different curing temperatures of the curing system, and the curing temperature increased with the rise in the heating rate. According to dynamics calculation the curing process was determined as follows： the epoxy resin was undergone cure of two hours at 100, 150℃, successively, and post cure of two hours at 180 ℃ The heat resistance of the epoxy resin cured via the process was superior to that of the epoxy resin cured at room temperature, and the initial decomposition temperature of the former was up to 368℃.

关 键 词：环氧树脂 均苯四甲酸二酐 固化工艺 耐热性 

分 类 号：TQ323.5[化学工程—合成树脂塑料工业]