含芴聚芳醚酮对BMI树脂增韧改性的研究

Preparation and properties of BMI resin modified by fluorene-containing poly(arylene ether ketone)

采用将含芴聚芳醚酮（PFEK）溶解于3,3’-二烯丙基双酚A,低温下加入4,4’-二氨基二苯甲烷双马来酰亚胺进行熔融共聚,再高温固化的方式,制备了含芴聚芳醚酮增韧的双马来酰亚胺树脂。结果表明：PFEK树脂的加入对复合材料的固化行为没有影响,PFEK树脂的加入量在7.5%~10.0%之间复合材料发生相反转,复合材料具有相分离结构;当PFEK的加入量为10.0%时,复合材料的弯曲强度和抗冲击强度由无PFEK树脂时的110.2MPa与9.0kJ/m2提高到148.7MPa与14.6kJ/m2,PFEK树脂的加入提高了复合材料的耐温性能。

A novel bismaleimide/diallylbisphenol（BMI/DABPA） resin toughened by the fluorene-containing poly（arylene ether ketone）（PFEK） was prepared by dissolving PFEK in liquid DABPA and melt polymerization with MBMI,then curing at high temperature.The results indicated that the PFEK had no influence on the curing reaction of MBMI/DABPA resin.The phase inversion occurred when the PFEK content increased from 7.5% to 10.0% and the blends had obvious phase-separation structure.The bending strength and impact strength reached 146.8MPa and 12.9kJ/m2 when the PFEK content was 10.0%.The PFEK improved the thermal properties of the resins.