为了在厚度为10mm的3D碳纤维预制体中大量引入SiC微粉,在料浆不变的基础上采用真空浸渗法、加压浸渗法、加压过滤法、真空吸滤法等四种料浆浸渗法进行试验,并对引入微粉的量及其分布进行分析对比.结果表明,对于含1μm SiC微粉4vol% 的料浆,加压过滤法效果最佳,3次浸渗即能引入27 4vol%的SiC微粉,SiC微粉均匀致密填充.
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