【摘要】 对环氧树脂电子束辐射过程中的温度特性进行了研究。利用实时3D温度场采集系统测定了辐射过程树脂体系的温度,探讨了环氧树脂化学结构、分子量、引发剂、稀释剂及其含量对体系温度的影响。结果表明,电子束作用于体系后,体系温度随辐射剂量的加大而升高,但当剂量达到某一值后,体系温度不再升高而保持恒定;此种热效应主要是由被辐射体系吸收高能电子能量引起的。树脂分子的吸电子能力取决于环氧树脂分子的化学结构,与分子量无关。加入稀释剂之后,体系会出现温度峰,且随着稀释剂含量的增多,温度峰峰顶温度升高。更多还原

【Abstract】 The temperature characterizations of epoxy resin systems during electron-beam curing were measured by using automatic testing and collection systems. The effects of different factors, such as the chemical structures, the molecular weights of epoxy resins and the concentration of resins in the mixture with dilution were investigated. The properties of cured resins were evaluated by the gel mass fraction and the dynamic mechanical analysis. The (data) indicate that the rising of temperature in resins mainly results from the electron energy absorbance by the epoxy resins, in the process of EB curing, and the absorbency of resin systems depends on its chemical structures rather than the molecular weight of the epoxy oligomer. The addition of diluting agent would change the temperature characterization of resin systems and it was found that the more the concentration of the diluting agent, the higher the peak of temperature curves.更多还原