稀释剂对环氧树脂电子束辐射固化性能的影响  

Effect of diluent on the curing characterization of electron beam cured epoxy resins

作　　者：李玉彬[1] 张佐光[1] 袁宇慧 杨嘉陵[2] 

机构地区：[1]北京航空航天大学材料科学与工程学院,北京100083 [2]北京航空航天大学航空科学与工程学院,北京100083

出　　处：《复合材料学报》2007年第3期94-99,共6页Acta Materiae Compositae Sinica

基　　金：国家自然科学基金项目(59833110);国家863项目(2001AA335020)

摘　　要：对分别加入4种稀释剂的双酚A环氧树脂和酚醛环氧树脂的电子束辐射固化性能进行了研究。分析了稀释剂种类及含量对环氧树脂体系辐射产物的固化度、固化均匀性、固化区域大小及其动态力学性能的影响规律。结果表明:电子束固化环氧树脂体系中加入稀释剂后,辐射产物的固化度、玻璃化转变温度及储能模量有所下降,但固化均匀性得到提高;加入稀释剂的环氧树脂电子束固化区域的厚度均小于未加稀释剂树脂,而底面直径却大于未加稀释剂树脂;随着树脂中实际稀释剂含量的增加,电子束固化环氧树脂固化度逐渐降低,固化层厚度减小,固化区域的底面直径先增加后减小。The electron beam （EB） curing characterizations of bisphenol A epoxy resins and phenolic aldehyde epoxy resins with different diluents were investigated. The effects of the kind and content of diluents on the gel mass fraction, curing uniformity, cure dimension, glass transition temperature （Tg） and dynamic modulus for different samples were analyzed. It can be found that the use of diluents in the epoxy resin systems will reduce the gel mass fraction, T, and storage modulus of EB cured epoxy resins, while it will improve the curing uniformity. The cured thickness of the epoxy resin with diluent is smaller than that of the resin without diluent, while the cure diameter of epoxy resin with diluent is larger. With the increasing diluent content, the gel mass fraction decreases gradually, the cure thickness increases, and the cure diameter increases at first and then decreases.

关 键 词：环氧树脂 电子束 辐射固化 稀释剂 固化度 动态力学性能 

分 类 号：TB332[一般工业技术—材料科学与工程]