以N,N,N′,N′-四炔丙基-4,4′-二氨基二苯甲烷（TPDDM）、4,4′-联苯二苄叠氮（BAMBP）和二乙炔基苯（DEB）为单体原料，以1,3-偶极环加成反应进行三元共聚，制备出共聚型三唑树脂（C-PTA树脂）。研究了单体配比及不同结构DEB对C-PTA树脂耐热性能的影响。结果表明：BAMBP、TPDDM、DEB的最优摩尔配比为1∶0.7∶0.7，此配比下C-PTA树脂固化物的玻璃化转变温度（Tg）为265℃，在空气和氮气气氛中的5%热失重温度Td5分别为329℃和340℃。当参与共聚反应的DEB全为间位结构时，C-PTA树脂的Tg最高。
Using N,N,N’,N’-tetrapropargyl-diamino diphenyl methane(TPDDM), 1,1′-bezidomethyl-4,4′-biphe-nyl(BAMBP) and diethynylbenzene(DEB) as raw materials, a copolytriazole resin(C-PTA resin) was pre-pared via 1,3-dipolar cycloaddition reaction. The effects of molar ratio of monomers and different DEB structure on the heat-resistance of the C-PTA resin were studied. The results show that the best molar ra-tio of BAMBP, TPDDM and DEB is 1∶0.7∶0.7, under the ratio, the glass transition temperature(Tg) of the C-PTA resin is 265℃, and the 5% weight loss temperature is 329℃ and 340℃at air and nitrogen atmosphere respectively. When the DEB structure is meta position structure, the Tg of the C-PTA resin is the highest.
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