双酚A型苯并嗪恶嗪树脂的流变特性研究

Study on rheological behavior of bisphenol A based benzoxazine resin

以双酚A、苯胺和甲醛为原料制备了双酚A型苯并口恶嗪(BOZ)单体,并对其进行了FT–IR、1H–NMR测试,重点研究了该单体聚合所得树脂的流变特性。在黏度实验的基础上,依据双阿累尼乌斯方程建立了与实验结果较吻合的等温化学流变模型。该模型可较准确地预测体系的低黏度工艺窗口,为该树脂的RTM工艺参数的优化提供科学依据。

Bisphenol A based benzoxazine （BOZ） monomer was prepared from bisphenol A, aniline and formaldehyde, then it was determined by FT-IR, 1H-NMR. The rheological behavior of the resin prepared by polymerization of the monomer was emphatically studied. A isothermal chemical rheological model which is in good agreement with the experimental results was established according to the dual-Arrhenius equation based on the viscosity experiments. The model can accurately predict the viscosity process window, and provides a scientific basis for optimization of resin transfer molding （RTM） process parameters.