摘要
研究了CYD-128/GA-327环氧树脂体系在纯树脂和有玻璃纤维存在下的固化特性。结果表明:玻璃纤维加入后使复合材料体系的表观活化能、指前因子、反应级数和反应速率常数有小幅增加;固化放热峰面积和反应热明显下降,且下降幅度随纤维质量含量的增加而增大。纤维的加入,使得复合材料体系在相同升温速率下的最大固化反应速率降低,固化起始温度提前,达到最大固化反应速率的时间延长,固化反应完成所需的时间变长。在170℃以前,纤维的加入对树脂体系的固化反应具有催化作用,170℃以后,纤维的加入对树脂体系的固化反应具有缓聚作用。
The curing characteristic of the CYD-128 （epoxy resin） and GA-327 （curing agent） system with or without glass fibre was investigated. The results indicated that the apparent activation energy, pre-exponential factor, reaction order, and reaction rate constant of composites system inlarged in a samll scale after the glass fiber was add- ed. The exotherm area and the reaction heat decreased markedly, and the falling range increased with the increasing fiber weight content. Under the same heating rate, the maximal cure reaction rate of the composites system decreased, and the cure start temperature decreased, and the time for achieving the maximal cure reaction rate was retarded, so the cure reaction time increased. Under 170℃, the catalytic action of glass fiber reacted on the resin system. Howev- er, over 170℃, delayed action of glass fiber reacted on the resin system.
出处
《宇航材料工艺》
CAS
CSCD
北大核心
2013年第2期70-74,共5页
Aerospace Materials & Technology
基金
侵彻冲击爆炸效应及防护研究(51021001)
