RTM为闭模成型工艺,难以观察到模腔内树脂的充模与固化反应过程.利用介电分析仪对RTM工艺进行在线监测,测得了树脂固化过程中不同模具温度下树脂反应的温度及离子导电率、不同纤维含量条件下的介电常数以及不同纤维织物方式下的离子导电率.实验结果表明: 固化反应放热使复合材料局部温度升高,并形成复杂的温度梯度分布;在较高温度和较低纤维含量条件下,离子导电率变化较快,对树脂固化反应的影响较大;不同织物方式的玻璃纤维对离子导电率也有一定的影响,玻璃纤维复合毡比方格布影响大.
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