非织造材料透气性与空气过滤阻力的相关性研究

Research on the Correlation between Air Permeability and Air Filtration R esistance of Nonwoven Materials

透气量和空气过滤阻力都是反映非织造过滤材料对空气通透能力的物理指标,二者之间的关联性受非织造材料的材质和结构影响。通过对不同类型非织造材料的透气量和空气过滤阻力进行测试,统计测试数据并对比分析,找到两个指标之间的数量关系。研究结果表明,透气量越大空气过滤阻力越低,二者数值的乘积近似为定值,且理论乘积值与实际乘积值的比值λ近似在0.48~0.52之间,实际应用时可近似取0.5进行估算。

Both air permeability and air filtration resistance were physical indicators that reflected the air permeability of non-wov-en filter materials.The relationship between the two indicators was affected by the material and structure of the non-woven materials.Air permeability and air filtration resistance of different types of non-woven materials were tested,and the test data was compared and analyzed to find the quantitative relationship between the two indicators.The results showed that the greater the air permeability,the lower the air filtration resistance,and the product of the two values was approximately a fixed value.And the ratio of the theoretical product value to the actual product valueλwas approximately between 0.48 and 0.52,and it could be approximated as 0.5 for estima-tion in practical applications.