双酚A甲醛酚醛环氧树脂与甲基六氢邻苯二甲酸酐的固化反应及热性能  

Curing Reaction and Thermal Properties of Bisphenol-A-Type Novolac Epoxy Resins with Methylhexahydrophthalic Anhydride

作　　者：刘彦方[1] 杜中杰[1] 张晨[1] 励杭泉[1] 

机构地区：[1]北京化工大学材料科学与工程学院北京市新型高分子材料制备与加工重点实验室

出　　处：《高分子材料科学与工程》2007年第2期73-76,共4页Polymer Materials Science & Engineering

基　　金：国家自然科学基金(50503004)

摘　　要：用傅里叶红外光谱法和热分析法研究了双酚A甲醛酚醛环氧树脂(bis-ANER)与甲基六氢邻苯二甲酸酐的固化反应和热性能,结果表明,等温固化反应中环氧基团红外光谱吸收强度随固化时间延长而逐渐减弱;bis-ANER用二氧化乙烯基环己烯稀释后提高了固化产物的玻璃化温度,但降低了热降解温度;固化产物的热降解首先是-OH、-CH2-、-CH3、OC-O和C-O-C的断裂;动态空气气氛下的热降解过程分为两个阶段,起始阶段的热降解反应机理符合一级反应模式。The curing reaction and thermal properties of bisphenol A type novolac epoxy resin （bis-ANER） with methylhexahydrophthalic anhydride was studied with Fourier-transform infrared spectroscopy and thermal analysis. The results show that the intensity of epoxy absorbance decreases with the rising curing time. After diluented with vinyl cyclohexene dioxide, the glass transition temperature of bis-ANER increases while the degradation temperature decreases. The degradation process in dynamic air atmosphere is identified as two steps, and the first stage involves the breaking or detaching of -OH, -CH2,, -CH3, OC-O and C-O-C. The mechanism of the thermal degradation was studied with Coats-Redfern method showing a first order process.

关 键 词：环氧树脂 固化反应 玻璃化转变 热降解 

分 类 号：TQ323.5[化学工程—合成树脂塑料工业]