摘要
通过差示扫描量热分析(DSC)研究了自制树脂传递模塑(RTM)用6818高温环氧树脂体系的固化反应特性,采用外推法和红外光谱(FT-IR)确定了6818树脂体系的最佳固化工艺,通过动态热机械分析(DMA)对树脂体系的耐热性能进行了研究。研究结果表明,固化过程中树脂体系的各组分反应同步,反应放热峰达到252. 5℃;树脂体系的最佳固化工艺为130℃2h然后再180℃2h;树脂的玻璃化转变温度为232℃,树脂具有良好的耐高温性能,能在130℃的温度条件下长期使用。
The curing reaction characteristic of 6818 heat temperature curing epoxy resin system for resin transfer molding(RTM) was studied by differential scanning calorimetry(DSC). The best curing process was determined by extrapolation and fourier transform infrared spectroscopy(FT-IR). The heat resistance was tested by dynamic mechanical analysis(DMA). The experimental results showed that all components of the resin system reacted synchronously during the curing process. The peak value of exothermic reaction reached 252. 5℃ . The best curing cycle was 130℃ 2 h and then 180℃2 h. The glass transition temperature was 232℃ . The resin system had excellent heat resistance and could be used for a long time during 130℃ .
作者
杜姝婧
龚文化
许亚洪
Du Shujing;Gong Wenhua;Xu Yahong(Aerospace Research Institute of Materials&Processing Technology,Beijing 100074)
出处
《化工新型材料》
CAS
CSCD
北大核心
2019年第11期131-133,共3页
New Chemical Materials
关键词
环氧树脂
耐高温
固化工艺
玻璃化转变温度
epoxy resin
heat resistance
curing process
glass transition temperature
