单向导湿针刺非织造布的制备及其性能研究

Preparation of Unidirectional Water-transfer Needle-punched Nonwoven Fabric and its Properties

为制备具有单向导湿效应的针刺非织造布,以涤纶纤维与黏胶纤维为原料,采用针刺加工工艺制备单种纤维的单层纤维网,并将两层纤维网叠合后进行针刺复合得到复合纤维网。在测试单层纤维网平方米质量,芯吸性能的基础上,测试并分析复合纤维网的表面形貌、含水量变化、水分扩散情况、水分单向传递指数,分析水分在复合纤维网中的传输机理。结果表明:水分在涤/黏针刺复合纤维网中的扩散同时具有选择性与方向性;针刺的方向会引起纤维的层间转移,对复合纤维网的单向导湿性能有较大影响;以吸湿性能差异大的两种纤维为原料制备的针刺复合纤维网作为贴身服用面料能够单向将人体汗液排出,隔绝外部水分,实现单向导湿。

In order to prepare needle-punched nonwoven fabric with unidirectional water-transfer effect,the single-layer fiber web of a single fiber was prepared with needle punching process by using polyester fiber and viscose fiber as raw materials,and two layers of fiber webs were superimposed for needling composite to gain the composite fiber web.On the basis of testing the weight and wicking properties of single-layer fiber web,the surface morphology,moisture content change,moisture diffusion,one-way transfer index of the composite fiber web were tested and analyzed,and the transmission mechanism of moisture in the composite fiber webwas analyzed.The results show that the diffusion of moisture in the polyester/viscose needle-punched composite fiber web is selective and directional at the same time;the direction of needle punching process will cause the inter-layer transfer of fibers,which has a great influence on the one-way moisture-transfer of the composite fiber web;the needle-punched composite fiber web prepared with two kinds of fibers with greatly different moisture absorption properties can discharge the sweat of human body unidirectionally and isolate external moisture to realize one-way moisture transfer.