The processing difficulties of aromatic cyano-based resins have always been a challenging issue in this field. Currently, a new approach to solving this problem is the modification of the chemical environment of the cyano group. In this work, a bifunctional pyrazine-2,3-dicarbonitrile resin 5,5'-((propane-2,2-diyl)bis(4,1-phenylene))bis(oxy))bis(pyrazine-2,3-dicarbonitrile) (BPQCN) was successfully synthesized and compared to the control resin 4,4'-((propane-2,2-diyl)bis(4,1-phenylene))bis(oxy))bis(phthalonitrile) (BPAh). Thermal analysis and spectroscopic analysis together demonstrate that the pyrazine moiety endow the resin with higher cross-linking reactivity and a lower melting point. Meanwhile, spectroscopic analysis results show that the major cured products of the BPQCN are azaisoindoline and azaphthalocyanine. In addition, thermal gravimetric analysis (TGA) and dynamic mechanical analysis (DMA) show that the cured resin has the typical characteristics of high-performance thermosetting resins, with excellent thermal stability and heat resistance. The successful preparation of pyrazine-2,3-dicarbonitrile resin is promising to bring new members to the family of aromatic cyano-based resins.

芳香氰基树脂的加工难度一直是该领域的难题。目前，解决这一问题的新途径是对氰基的化学环境进行改造。在这项工作中，成功合成了双功能吡嗪-2,3-二甲腈树脂5,5'-((丙烷-2,2-二基)双(4,1-亚苯基))双(氧基))双(吡嗪-2,3-二甲腈)(BPQCN)，并与对照树脂4,4'-((丙烷-2,2-二基)双(4,1-亚苯基))双(氧基))进行了比较双（邻苯二甲腈）（BPAh）。热分析和光谱分析共同证明吡嗪部分赋予树脂较高的交联反应性和较低的熔点。同时，光谱分析结果表明BPQCN的主要固化产物是氮杂异吲哚啉和氮杂酞菁。此外，热重分析（TGA）和动态力学分析（DMA）表明固化树脂具有高性能热固性树脂的典型特征，具有优异的热稳定性和耐热性。吡嗪-2,3-二甲腈树脂的成功制备有望为芳香氰基树脂家族带来新成员。