絮状纤维集合体压缩回复特征的研究

压缩性能是纺织材料及纺织制品的主要物理机械性能之一,影响材料的各种使用性能.通过单向施力挤压,研究了羊毛、山羊绒、腈纶、鹅绒、木棉5种常用絮状纤维集合体的压缩回复性能,对它们的压缩回复特征曲线进行了表征,并完成了特征值的提取发现由于纺织纤维的黏弹性导致集合体的压缩曲线与压缩回复曲线不重合.5种絮状纤维集合体形成的压缩回复圈大小及形状各不相同.这主要与纤维的形态结构及性能有关.集合体压缩变形回复的能力几乎不受纤维排列方式的影响,主要由纤维自身的回弹能力决定.

Research of Compressional Resilience of Fiber Fill Assemblies

Compressional behavior which affects the performances of textiles is one of the important mechanical behaviors of textiles. Through one-way compressing the fibers, the compressional resilience of five fiber fill assemblies has been investigated, i. e. wool, cashmere, acrylic, goose down and kapok. The compressional resilience characteristic curves were characterized and the eigenvalues were extracted. It showed that the compressive curves and resilience curves weren't superposable for the viscoelasticity of fibers. For various fiber assemblies, the form of their compressive curves and resilience curves were distinguishing. It connected with the fiber morphological structures and fiber characteristic. The compressional resilience capability of fiber assembly wasn't affected by the fiber arrangement, which was decided mainly by the fiber elastic recovery capability.