摘要
通过非等温DSC法及拉伸性能测试研究了4,4'-二氨基二苯基甲烷(DDM)用量对环氧树脂/聚酰胺651体系的固化反应的影响,计算了固化反应的表观活化能和反应级数,确定了其胶粘剂体系的固化工艺参数。结果表明,胶粘剂中DDM的质量分数达到14%(以环氧树脂质量为基准)时,固化反应放热量达到最大值。固化体系的活化能为53.654 kJ/mol,反应级数为0.895。最佳起始固化温度为40℃,峰值温度为85℃,终止温度为120℃,体系的拉伸强度提高了约50%。
The effect of DDM amounts on the curing process of epoxy resin/polyamide 651 system was investigated by the non-isothermal DSC and the tensile strength test.The apparent activation energy and the order of reaction were calculated and the curing process parameters of adhesives were determined.The results showed that the heat release of the curing reaction of the adhesives with 14% DDM（based on the weight of epoxy resin）reached the maximum.The activation energy was 53.654 kJ/mol and the reaction order was 0.895.The best initial curing temperature,peak temperature and the end temperature were 40 ℃,85 ℃and 120 ℃,respectively.The tensile strength of the systems with 14% DDM was increased by about 50%.
出处
《热固性树脂》
CAS
CSCD
北大核心
2011年第1期21-24,30,共5页
Thermosetting Resin
基金
广东省科技厅省部产学研项目资助(2009B090600056)
