【摘要】 对双酚 A型环氧树脂的电子束辐射固化反应过程进行了分析 .考察了引发剂、稀释剂对树脂体系辐射反应的影响 ,以环氧丙烷作为模型化合物 ,研究了环氧丙烷 -碘盐体系的电子束辐射反应机理 ,证实了在电子束辐射下 ,碘盐分解产生质子酸 ,引发环氧树脂阳离子开环聚合的反应过程 .观测环氧树脂辐射固化区域发现 ,电子束穿过样品时发生强烈的散射 ,在辐射方向以及周围一定区域内引发固化反应 ,固化反应从活性中心开始向体系内部层层扩展 ,整个固化区域由很多的层状结构组成 .更多还原

【Abstract】 The curing process of bisphenol epoxy resin irradiated with electron beam (EB) was studied. The effect of different initiators and diluents on radiation reaction was analyzed. IR, ESR, GC-MS were used to study radiation reaction mechanism of epoxy resin by using epoxy propane as a model compound. The cation ring-opening polymerization process including decomposition of diaryliodonium salts under EB radiation and production of protonic acid that initiate polyreaction can be deduced. By analyzing an irradiated area of epoxy resin, it can be seen that intensive scattering of EB occurs in the resin system. The EB curing reactions spread inwards layer upon layer around active center when epoxy resin system is irradiated and whole cured area consists of many lamellar structures.更多还原