中的预热解;同时,碳纤维预制体经微波加热后,自发产生一定的温度梯度(预制体表面温度低于内部),抑制了预制体表面的气相热解反应,从而避免了由于在表面沉积引起的结壳现象,使前驱气体能保持线性小分子的状态向预制体内部输送,为实现预制体从内到外逐步致密提供了条件.
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