烯丙基双酚A改性双马来酰亚胺-三嗪树脂的热性能

摘要

以4,4'-二苯甲烷双马来酰亚胺、双酚A型氰酸酯和2,2-二烯丙基双酚A为基本原料制备了改性双马来酰亚胺-三嗪(BT)树脂.系统地研究了2,2-二烯丙基双酚A对BT树脂固化动力学、BT树脂的溶解性能和BT树脂固化物的热性能的影响.研究结果表明:烯丙基双酚A有效地降低了BT树脂的固化反应温度并提高了BT树脂的溶解性能.当烯丙基双酚A的加入量为20%(质量分数)时,BT树脂的固化反应峰值降至233.1℃;并且,其固化物的玻璃化转变温度仍然达到239.4℃,5%热失重温度为372.9℃,显示了良好的耐热性能.%2,2-diallyl biphenol A was used to modify the bismaleimide-triazine (BT resin ) which composed of bisphenol A dicyanate ester ( BCE ), 4,4＇-bismaleimidodipphenylmethane ( BMI ) . The effects of 2,2-diallyl biphenol A on curing reaction, solubility and thermal property of BT resin were investigated. The results showed that 2,2-diallyl biphenol A could reduce the temperature of curing reaction and improve the solubility of BT resin. When the amount of the 2,2-diallyl biphenol A amount was 20％, The temperature of curing reaction was lowered to 233.1 ℃. Furthermore, glass transition temperature ( Tg ) and the temperature at which 5％ of the mass volatilized of the modified BT were 239.4 ℃ and 372.9 ℃, respectively, showing that excellent thermal properties of the modified BT.