摘要
以酚酞型双马来酰亚胺(PBMI)和芳香二胺(DDE)为原料,经迈克尔加成反应制备出新型环氧树脂芳胺固化剂(PBMIDDE),红外光谱和核磁共振等分析方法证实了新型固化剂的分子结构。用动态差示扫描量热法(DSC)确定了该固化剂和环氧树脂的固化工艺并对固化动力学进行了研究。采用Kissinger方程、FWO方程计算出固化反应活化能分别为46.7 kJ/mol,49.1 kJ/mol,并结合Crane方程计算出反应级数为0.88。动态热机械分析表明,完全固化的树脂体系玻璃化转变温度为153℃;热失重研究结果显示,新型环氧树脂体系具有优异的热稳定性。
A new curing agent(PBMI-DDE) for epoxy resin was synthesized from phthalide-containing bismaleimide(PBMI) and aromatic amine(DDE) according to the Michael addition reaction. The chemical structure of PBMI-DDE was characterized by1 H NMR spectroscopy and Fourier transform infrared spectroscopy(FTIR). The curing performance and kinetics of E-51/ PBMI-DDE was studied by DSC.Apparent activation energy evaluated according to Kissinger model or FWO model is 46.7 or 49.1 kJ/mol,respectively, and the calculated reaction order is 0.88 based on Crane method. The DMA and TGA results show that the cured resin possesses excellent thermostability with a glass transition temperature153℃ for the completely cured resin.
出处
《材料研究学报》
EI
CAS
CSCD
北大核心
2014年第9期715-720,共6页
Chinese Journal of Materials Research
基金
国家自然科学基金51303107
国防"十二五"基础科研A352*******
辽宁省教育厅优秀人才计划LR2013002项目资助~~
