Compared with the conventional composite curing processes, high-pressure microwave curing is a promising technology. In this study, a set of devices for high-pressure microwave curing was built and equipped with real-time temperature measurement capability and a microwave input control system. The orthogonal experimental method was applied to optimize three process parameters, including the heating rate, curing temperature, and holding time, for the high-pressure microwave curing of T800/X850 composites. The effects of the three parameters on the curing quality were studied by measuring the interlaminar shear strength (ILSS) and conducting differential scanning calorimeter tests. The fracture surface of the samples was also examined by scanning electron microscopy. The results showed that the heating rate had a significant effect on the ILSS of the laminates, and the degree of cure of all samples was more than 95% in the tests. Furthermore, the optimal process parameters were determined as follows: heat up to 170°C with a heating rate of 6°C min−1 and a holding time of 90 min. The total curing time of the sample was 42.4%, and the ILSS of the sample was slightly enhanced by 0.31% compared with standard thermal curing. These results could serve to make trade-offs between reducing manufacturing time and preserving the mechanical properties of microwave-cured composites.

中文翻译：

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T800/X850碳纤维增强塑料高压微波固化工艺优化

与传统的复合材料固化工艺相比，高压微波固化是一项很有前途的技术。在这项研究中，建立了一套高压微波固化装置，并配备了实时温度测量能力和微波输入控制系统。采用正交试验法优化了T800/X850复合材料高压微波固化的升温速率、固化温度和保温时间三个工艺参数。通过测量层间剪切强度（ILSS）和进行差示扫描量热仪测试，研究了三个参数对固化质量的影响。还通过扫描电子显微镜检查样品的断裂表面。结果表明，升温速率对层压板的ILSS有显着影响，测试中所有样品的固化度均在95%以上。此外，最佳工艺参数确定如下：加热至 170°C，加热速率为 6°C min-1，保持时间为 90 分钟。样品的总固化时间为42.4%，与标准热固化相比，样品的ILSS略微提高了0.31%。这些结果可用于在缩短制造时间和保持微波固化复合材料的机械性能之间进行权衡。样品的总固化时间为42.4%，与标准热固化相比，样品的ILSS略微提高了0.31%。这些结果可用于在缩短制造时间和保持微波固化复合材料的机械性能之间进行权衡。样品的总固化时间为42.4%，与标准热固化相比，样品的ILSS略微提高了0.31%。这些结果可用于在缩短制造时间和保持微波固化复合材料的机械性能之间进行权衡。