Bismaleimide resin modified by a propargyl substituted aromatic amine with ultrahigh glass transition temperature, thermomechanical stability and intrinsic flame retardancy
作者:Yuhao Zhang、Linxiang Wang、Qiaolong Yuan、Qing Zheng、Liqiang Wan、Farong Huang
DOI:10.1016/j.reactfunctpolym.2023.105740
日期:2023.12
conversion of reactions, and declines clearly with the conversion of above 60%. The residual yield at 600 °C in nitrogen and air of the cured BTP resin are 60.5% and 60%, respectively, and the glass transition temperature of the cured resin can reach 371 °C. The impact and flexural strengths of the cured BTP resin can increase with increase of BDM content in the BTP resin. The flexural strength of the
合成了N,N,N',N'-四炔丙基-对,对'-二氨基二苯基甲烷(TPDDM),并与4,4'-双马来酰亚胺二苯基甲烷(BDM)在熔融状态下进行预聚,得到新型TPDDM改性双马来酰亚胺(BTP ) )树脂通过加成反应。BTP树脂表现出良好的溶解性和熔融性,工艺窗口为90°C。TPDDM和BDM的自聚合以及不饱和基团的进一步自由基聚合构建了交联网络,得到固化的BTP树脂。BTP树脂固化反应的表观活化能随反应转化率缓慢下降,当转化率超过60%时下降明显。固化后的BTP树脂在氮气和空气中600℃的残余收率分别为60.5%和60%,固化树脂的玻璃化转变温度可达371℃。固化的BTP树脂的冲击强度和弯曲强度可以随着BTP树脂中BDM含量的增加而增加。固化后的BTP树脂在300℃、30min下的弯曲强度可达到60.8MPa,保留了室温下的94%。固化后的BTP树脂因其优异的热稳定性而表现出更好的无卤、无磷固有阻燃性。