改性BMI/苯并噁嗪树脂的固化反应及其动力学研究  

Study on curing reaction and kinetics of modified BMI/benzoxazine resin

作　　者：李玲[1] 陈剑楠[1] 

机构地区：[1]中北大学材料科学与工程学院,山西太原030051

出　　处：《中国胶粘剂》2008年第10期23-26,共4页China Adhesives

基　　金：国防预研资助项目;山西省自然基金资助项目(20051014)

摘　　要：将改性双马来酰亚胺(BMI)树脂与苯并噁嗪(B-a)树脂进行共混共聚制备了改性BMI/B-a树脂,采用动态DSC技术研究了改性BMI/B-a树脂的固化反应过程。实验结果表明,在100～350℃范围内出现两个峰,其中100～153℃是树脂的熔融吸热峰(峰顶温度为134℃),156～303℃是树脂固化反应过程的放热峰(峰顶温度为232℃);改性BMI树脂与B-a树脂的固化反应级数为0.93,活化能为85.6 kJ/mol;改性BMI/B-a树脂的固化工艺为180℃×1 h+200℃×2 h+230℃×2 h,后处理工艺为280℃×2 h。Modified bismaleimide （BMI）/benzoxazine （B-a） resin was prepared by blending and copolymer- ization between BMI and B-a resin, and the curing reaction process of modified BMI/B-a resin was examined by dynamic DSC. The experiment result showed that there are two peaks between 100℃ and 350 ℃, thereinto the melt endothermic peak of resin was between 100℃ and 153℃ （the peak temperature at 134℃ ） and the exothermic reaction peak in curing reaction process of resin was between 156℃ and 303 ℃ （the peak temperature at 232℃）. The activation energy of the modified BMI/B-a resin was 85.6 kJ/mol and the reaction progression was 0.93. The reasonable cure technology of modified BMI/B-a resin was 180 ℃×1 h ＋200℃×2 h＋230℃×2 h, and the post cure technology was 280℃×2 h.

关 键 词：苯并噁嗪 双马来酰亚胺 改性 固化反应 动力学 

分 类 号：TQ320.2[化学工程—合成树脂塑料工业]