摘要
采用双马来酰亚胺(BMI)对苯并恶嗪进行改性,通过溶液法制备了苯并恶嗪/BMI树脂基玻璃布复合材料,对其力学性能和吸水性能进行了研究,并研究了苯并恶嗪/BMI树脂体系的物理性能和反应特性。结果表明,随BMI用量的增加,苯并恶嗪/BMI树脂体系的凝胶时间缩短;体系的聚合过程只有一个放热峰,峰顶温度为232℃,且与BMI的用量无关;随BMI用量的增加,复合材料的弯曲强度和冲击强度升高,吸水率下降。
The resins of benzoxazine （Bz） and a bismaleimide （BMI） were thermally polymerized in differing proportion of each component（Bz/BMI） and their physical properties, cure property and Bz/BMI resins matrix laminate materials properties were investigated. The Bz/BMI resins could dissolve in acetone. The gelation time of Bz/BMI resins became shorter with the increase of BMI content. The DSC confirmed a lowering of the cure temperature of the Bz/BMI resins, Tp was shifted to 232℃ in comparison to those of pristine BMI （255℃） and pristine Bz （262℃）. We made the Bz/BMI resins matrix laminate materials in compression molding and their properties analysis showed that the Bz/BMI resins matrix laminate materials exhibited better mechanical properties than the respective benzoxazines resins matrix laminate material. The flexural strength and impact strength were enhanced and moisture absorption could be degraded with the increase of BMI content.
出处
《工程塑料应用》
CAS
CSCD
北大核心
2009年第6期20-23,共4页
Engineering Plastics Application
关键词
苯并恶嗪
双马来酰亚胺
层压板
benzoxazine, bismaleimide, laminate materials
