材料工程Issue(z1)：76-78,3.
BMI用量对改性苯并噁嗪树脂性能的影响
Modification Bismaleimide-benzoxazine Resin Curing and Heat Resistance of Cured Resin
摘要
Abstract
A blend of benzoxazine (Bz) and a bismaleimide (BMI), was thermally polymerised in varying proportions and their cure property and heat resistance of cured resin characteristics were investigated. The differential scanning calorimetric analysis, confirmed a lowering of the cure temperature of the modified benzoxazine resins. In the modified benzoxazine resins systems, the T; got reduce and the Tp was shifted to a lower temperature 232℃ in comparison to those of BMI (255°C) and Bz (262℃). It implied the processing of the modified benzoxazine resins were improved and preferred to process a thermosetting polymer at lower temperatures to avoid void formation. The thermogravimetric analysis indicated that the initialization decomposition temperature has been improvement of the cured modified benzoxazine resins compare with benzoxazine resin. The char yield of cured modified benzoxazine resins with 10% BMI content at 800℃ is higher than cured benzoxazine resin and both cured modified benzoxazine resins with 30 % BMI content and cured benzoxazine resin has the same char yield at 800°C. The char yield of cured modified benzoxazine resins excess 30% BMI content was lower cured benzoxazine resins, however the initialization decomposition temperature cured modified benzoxazine resins was higher cured benzoxazine resins.关键词
苯并噁嗪/BMI树脂/开环聚合/热分解Key words
benzoxazine/bismaleimide/ring-open polymerization/TGA分类
化学化工引用本文复制引用
李玲,陈剑楠..BMI用量对改性苯并噁嗪树脂性能的影响[J].材料工程,2011,(z1):76-78,3.基金项目
山西省自然基金资助项目(20051014) （20051014）
