先进树脂基复合材料微波固化过程数值模拟

在深入分析玻璃纤维/环氧树脂复合材料微波固化过程的基础上,结合电磁学、传热学及固化动力学理论,建立了一个含有2项内热源的电磁场 温度场 固化度场耦合模型,基于该多物理场耦合模型,对玻璃纤维/环氧树脂复合材料NOL环的微波固化过程进行了仿真模拟,将仿真结果与传统热固化过程进行了对比研究, 得到结论为：微波固化方式较传统热固化方式缩短了复合材料达到既定固化温度的时间,降低了复合材料NOL环内部的固化度分布梯度,有效改善了固化均匀性。复合材料微波固化过程数值模拟的实现,为微波固化技术的研究提供了一种可行的方法途径。

Numerical Simulation of Microwave Curing Process of Advanced Resin Matrix Composites

On the basis of thoroughly analyzing the microwave curing process of glass fiber epoxy composites, this paper combines with electromagnetic, heat transfer and cure reaction kinetics theories, to build a three-dimensional coupled model of electromagnetic field, temperature field and cure degree field, and the model includes two internal heat sources. Based on this model, the simulation of microwave curing process of glass fiber epoxy NOL ring is realized, and the simulation results are compared with the traditional thermal curing process. The comparative studies show that the microwave curing method shortens the time for the composite to reach the curing temperature , and reduces the gradient of cure degree distribution in the composite NOL ring and effectively improves the uniformity of cure compared with conventional thermal curing method. The realization of numerical simulations on microwave curing processes of epoxy composites could provide a feasible method for the study of microwave curing technique.