论文部分内容阅读
引入三维编织石英纤维织物作为热密封材料,对三维四向、三维五向编织结构热密封材料试样进行了不同压缩率下透气性能试验。分析了三维编织结构热密封材料气体渗透量随压缩率、压差及编织工艺参数的变化规律。结果表明,通过优化编织结构,有利于提高试样的气密性能;试样的平均气体渗透量受纤维体积含量影响,随压缩率的增大而降低;在压缩率为10%与20%时,纤维体积含量为50%的三维四向试样相比气密性能更好,平均气体渗透量分别为1.14×10~(-6)、9.29×10~(-7)kg/(s·mm);当压缩率增加到30%时,试样出现明显剪切变形和碎裂,试样失效。通过合理设计,三维编织石英纤维织物可满足密封材料气密性能要求。
The three-dimensional weaved quartz fiber fabric was introduced as the heat-sealing material, and the gas-permeable performance under different compression rates was tested on the samples of three-dimensional four-dimensional and three-dimensional five-directional braided heat-sealing materials. The variation law of gas permeability of three-dimensional braided heat-sealing material with the compression rate, pressure difference and braiding process parameters was analyzed. The results show that, by optimizing the braided structure, it is conducive to improve the gas-tightness of the sample; the average gas permeability of the sample is affected by the fiber volume content, with the compression rate increases; the compression rate of 10% and 20% , The three-dimensional four-way samples with 50% fiber volume have better gas-tightness than those with the average gas permeability of 1.14 × 10 -6, 9.29 × 10 -7 kg / (s · mm ); When the compression rate increased to 30%, the sample showed significant shear deformation and fragmentation, the sample failure. Through the rational design, three-dimensional woven quartz fabric can meet the sealing material requirements of airtight performance.