摘要
研究了一种可用两种固化剂RIMH 037和RIMH 038的环氧树脂体系的化学流变特性和放热特性,对固化剂混合比例不同的6个环氧树脂体系进行等温粘度测试和实际放热性能分析,根据对等温粘度曲线的数据拟合分析,建立预测模型,与实际工艺结合分析。在两种固化剂比例不变时,升高温度,树脂体系的适用期均先升高后降低,35℃时适用期最长;在同一温度下,两种固化剂混合使用,增加固化剂RIMH 038的混合比例,该树脂体系的适用期变化规律不明显;实际放热测试显示环氧树脂体系的适用期变化规律与流变分析结果一致。
The rheological behavior and exothermal behavior of an epoxy resin system with two available curing agents RIMH 037 and RIMH 038 were studied. The isothermal viscosity and actual exothermal behavior were analyzed for this resin system with six different curing agent mixture ratios. A viscosity model was established after the simulation of the obtained rheological data. The results show that under the same mixture ratio,the pot life was first increased and then decreased as the temperature increased,with 35℃ for the longest. Under the same temperature,the pot life was not obviously changed as the content of RIMH 038 increased. The change law of the pot life indicated by the actual heating test was consistent with the rheological analysis results.
出处
《玻璃钢／复合材料》
CAS
CSCD
北大核心
2015年第3期5-10,共6页
Fiber Reinforced Plastics/Composites
基金
国家863计划(2012AA03A205)
关键词
环氧树脂
流变特性
适用期
放热特性
epoxy resin
rheological behavior
exothermal behavior
pot life
