基于FTIR 跟踪的氰酸酯与环氧树脂共聚反应过程研究

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中图分类号：TQ323.5 文献标志码：A文章编号：1001-5922（2025）06-0040-04

Research on the copolymerization reaction process of cyanate ester and epoxy resin based on FTIR Tracking

LYU Jiamu，FAN Chunhui，ZHANG Keming，QI Zhigang，ZHU Zhifeng（Yangzhou Techia Material Co.，Ltd.，Yangzhou ，Jiangsu China）

Abstract：The copolymerization reaction process of the model substance phenyl dodecyl cyanate and phenyl glycid⁃ yl ether under medium and low temperature conditions was studied by FTIR tracking method，and the changes of the relative concentrations of each functional group over time were characterized by the internal standard method. The results show that under the condition of 100∘C without a catalyst，cyanate ester basically does not react with ep⁃ oxy resin，and the self-polymerization of cyanate ester is also very difficult to occur. Under the condition of 150°C ， the copolymerization reaction process of cyanate ester and epoxy resin is divided into two routes. The first is the di⁃ rect copolymerization reaction between the cyanate ester functional group and the epoxy functional group，generat⁃ ing oxazoline and all rearranging into the first oxazolidone structure. The second is that after the cyanate ester self-polymerizes into a triazine structure，it undergoes an insertion copolymerization-rearrangement-ring-opening co⁃ polymerization reaction with epoxy resin，generating isocyanurate ester and the second oxazolidone structure. Dur⁃ ing this reaction process，regardless of whether a catalyst is involved or not，the reaction route will not change，and only the proportion of each component in the final product will be affected.

ey words：cyanate ester；epoxy resin；copolymerization；infrared spectrum

氰酸酯是一种高性能热固性树脂，具有优异的介电性、耐热性、综合力学性能和优异的可加工性，可应用于高速覆铜板、封装基板、绝缘漆、高温胶粘、航空航天复合材料、低温储罐等领域。（剩余5495字）