通过高效液相色谱、质谱分析和核磁共振等方法研究双酚A型氰酸酯单体和酚类的反应机理,提出可能的反应方程式。研究结果表明,酚类在体系反应初期起到了催化作用,但在反应后期以亚胺碳酸酯的结构形式留在三维网络中,实际起到的是改性作用。酚类不仅可催化氰酸酯基团三环化,还可改性氰酸酯树脂。 The reaction mechanism of bisphenol A cyanate ester monomers and phenols was studied by high performance liquid chromatography, mass spectrometry and nuclear magnetic resonance, and the possible reaction equations were proposed. The results show that the phenols play a catalytic role in the initial reaction of the system, but in the latter part of the reaction, the structure of the imide carbonate remains in the three-dimensional network, and the modification actually takes place. Phenols can not only catalyze tricyclization of cyanate groups, but also modify cyanate resins.