纳米SiO_2对双酚A环氧树脂电子束固化特性的影响  

EFFECT OF NANO-SiO_2 ON ELECTRON BEAM CURING CHARACTERISTICS OF BISPHENOL A EPOXY RESIN SYSTEM

作　　者：李红霞[1] 张佐光[1] 李玉彬[1] 

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

出　　处：《复合材料学报》2005年第4期11-16,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：探讨了电子束固化纳米SiO2/双酚A环氧树脂复合材料体系的温度、固化度、固化区域的尺寸和动态力学性能随纳米粒子含量的变化规律,研究了纳米SiO2对体系电子束辐射固化特性的影响。结果表明,随着纳米粒子含量的增加,体系的放热峰逐渐降低;少量纳米粒子的加入有助于增大试样固化区域的尺寸、提高固化度、玻璃化转变温度和高温模量;纳米SiO2的加入改变了电子束的传播途径,但其电子束固化生长机制与未加入纳米粒子的纯树脂体系相似。Nano-SiO2 particles were added in the bisphenol A epoxy resin. The curing characteristics of the nano-SiO2/epoxy resin system were researched. The effects of nano-SiO2 content on reaction temperature, gel fraction,dimension of the cured area and dynamic mechanic performance of the electron beam （EB） cured epoxy resin system were investigated. The results show that the exothermal peak of the curing system decreases with the increasing of nano-SiO2 content, and a small amount of nano-SiO2 particles contribute to increasing the dimension of the cured area, gel fraction, glass temperature and high temperature modulus. The growth mechanism of the system with nano-SiO2 particles is similar to that without nano-SiO2 particles, although the propagation path of EB is changed by nano-SiO2 particles.

关 键 词：环氧树脂 电子束固化 纳米SIO2 固化特性 

分 类 号：TB332[一般工业技术—材料科学与工程] O644.2[理学—物理化学]