【摘要】 本文研究了改性多元缩水甘油胺型耐高温环氧树脂的固化动力学,分析了该树脂体系的浇注体性能,制备了碳纤维拉挤复合材料,并通过热机械分析(DMTA)考察了树脂浇注体及其复合材料的动态热机械性能。结果表明,树脂体系的凝胶化温度与固化温度相差较小,固化反应放热集中,适合于快速拉挤成型;其复合材料具有优良的耐高温性能,玻璃化温度(Tg)达到210℃以上。更多还原

【Abstract】 The curing kinetics of mod ified tetraglycidyld iam inod iphenylmethane heat resistant epoxy resin is stud ied. The properties of the resin and carbon fiber composites are analyzed. W ith the help of dynam ic mechanical thermal analysis (DMTA ), the hot mechanical properties of the resin and composites are exam ined. The result shows that the gel temperature of this resin is close to cure temperature. The resin can be used as the matrix of pul- truded composites, which possess excellent heat resistant property and glass transition temperature (Tg) can reach up to 210℃.更多还原