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气泡穿出织物层的实验分析

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Keywords: 复合材料,织物层,气泡,穿出

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Abstract:

为了消除热压成型过程中的气泡,初步研究了气泡从织物层中穿出的形态变化过程,从压力的角度分析了气泡穿出的驱动力,同时探讨了外加压力、树脂粘度、气泡大小、网格面积以及铺层层数等对气泡穿出行为的影响。研究结果表明,气泡主要随着树脂的流动而从织物中穿出的;对于同一大小的气泡,树脂粘度越低、铺层层数越少、网格面积越大,气泡穿出所需的外加临界压力越小;当树脂粘度和外加压力一定时,大气泡比小气泡更容易从织物中穿出。该研究结果为热压成型过程中气泡运动模型的建立提供了实验依据。

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