摘要
采用热分析和流变分析技术,系统地分析了耐烧蚀混合树脂体系——聚硅氮烷与烯丙基酚醛(PSN/AP)树脂体系的固化特性与化学流变特性。DSC分析表明,该树脂体系的两组分间存在固化反应的同步性,表现为单一固化放热峰,外推起始和终止反应温度分别为168和338℃。该混合树脂体系的化学流变特性无法用单一模型来描述,分析表明,当温度低于和高于起始反应温度时,可分别采用工程模型方程和阿累尼乌斯关系方程拟合。模型拟合数据与实测数据具有较好的一致性,针对VARTM成型技术,最适宜的注射温度在125℃左右。
The curing and rheological behaviors of the ablative resin-the PSN/AP resin blends were studied through thermal and rheological analysis techniques.The DSC analysis indicated that the synchronization reac-tion existed between the two components in the resin system confirmed by a single exothermic peak in the cu-ring curves;and the starting and final curing temperature were 1 68 and 338 ℃ determined through the extrapo-lation method,respectively.The chemical rheological behaviors of the resin blends couldn’t be described by a single viscosity model：the engineering and the Arrhenius viscosity equation were established separately when the temperature was below or higher than the starting curing temperature.The model values were in good agreement with the experimental results and the optimal injection temperature was at about 125 ℃.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2014年第15期15118-15123,共6页
Journal of Functional Materials
基金
国家高技术研究发展计划(863计划)资助项目(2012AA03A205)
关键词
聚硅氮烷树脂
烯丙基酚醛树脂
固化特性
流变特性
polysilazane resin
allyl phenolic resin
curing behavior
rheological bahavior
作者简介
谈娟娟（1983-），女，江苏宜兴人，工程师，博士，主要从事树脂基复合材料方面研究 E—mail：jjtan1983@163．com
