为掌握渗透率测试的影响因素, 自行研制了单向纤维集束的浸渗特性测试系统, 对比了液体沿单向纤维集束的饱和与非饱和渗透特性, 分析了不同压力作用形式、纤维体积分数、液体种类对非饱和渗透率测试结果的影响. 结果表明: 相同条件下纤维集束的饱和渗透率大于非饱和渗透率测试结果;当外压较小时毛细作用对非饱和渗透率测试结果的影响显著;当纤维体积分数增加时集束纤维的渗透率呈减小趋势;相同压力差下真空驱动测得的渗透率比正压驱动测试结果大.
An apparatus was designed and constructed capable of measuring the permeability of unidirectional fiber bundles. In order to analyse the axial permeation, saturated and unsaturated permeabilities were compared, and the influences of pressure type, fiber volume fraction and types of liquid on the unsaturated permeability were investigated. It is found that the saturated permeability is bigger than unsaturated permeability under the same test condition, and the influence of capillary force on unsaturated permeability reduces with increasing the external pressure. Besides, as the fiber volume fraction increases, the permeability declines and the permeability from the vacuum drive test is larger than that from the air drive test under the same pressure.
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