几种絮填纤维集合体的透气性能

Air Permeability of Some Kinds of Fiber Fill Assemblies

针对不同种类及不同排列的絮填纤维集合体的透气性能进行了研究,探讨了集合体体积密度变化与透气性能间的关系.实验证明:因纤维间形态结构的差异造成各种纤维集合体具有不同的透气特征,同时可以将Kozeny公式近似为有关集合体两端气压差与集合体体积密度间的二次多项式表达形式,K值的变化规律进一步验证K值与纤维的排列状态有关,并当孔隙率控制在一定范围时,K值可保持常数.

The air permeability of different kinds and different arrangements fiber fill assemblies have been studied. The relationship between assembly bulk densities and the air permeability was researehed. It showed that the fiber morphological structures affected the air permeability of fiber assemblies. The Kozeny＇s equation could be written as the polynomial of order 2 for the relationship between the air pressure difference for the top and bottom of assembly and the bulk density of assembly. The changing rule for the values of K validated that they were connected with the fiber arrangements. When the values of ε were in certain range, the values of K would be constants.