将共聚改性与端氨基超支化聚硅氧烷(HBPSi(N))的合成一步完成,建立了一步法制备改性双马来酰亚胺树脂(记为B/D/H(N))的方法.以N,N′-4,4′-二苯甲烷双马来酰亚胺(BMI)、二烯丙基双酚A(DBA)组成的体系(记为B/D)为对比,探讨了HBPSi(N)含量对B/D/H(N)树脂性能的影响.研究结果表明,HBPSi(N)含量对B/D/H(N)树脂的性能有重要影响.少量HBPSi(N)的加入不仅可以显著提高固化物的韧性,而且能有效加快树脂的凝胶时间,同时大幅度提高固化树脂的耐热性、介电性能和耐湿性.这些性能的改善主要缘于HBPSi(N)的加入改变了交联网络的分子结构.B/D/H(N)体系优异的综合性能使之在制备先进树脂基复合材料、胶黏剂方面显示出很大的应用潜力. The synthesis of the terminal amino-terminated hyperbranched polysiloxane (HBPSi (N)) was completed in one step. A one-step procedure for the preparation of the modified bismaleimide resin (denoted as B / D / H .Compared with the system consisting of N, N’-4,4’-diphenylmethanebismaleimide (BMI) and diallylbisphenol A (DBA) The effects of HBPSi (N) content on the properties of B / D / H (N) resin were investigated. The results show that the content of HBPSi (N) ) Can not only significantly improve the toughness of the cured product, but also accelerate the resin gelation time, while greatly improving the heat resistance, dielectric properties and moisture resistance of the cured resin.The improvement of these properties mainly due to the HBPSi (N ) Has changed the molecular structure of the crosslinked network.The excellent comprehensive properties of B / D / H (N) system make it show great potential in the preparation of advanced resin matrix composites and adhesives.