Nanofiber-wrapped yarn and the related wrapping mechanisms

Abstract

In this study, to improve the weavability of nanofibers, a self-developed electrospun nanofiber yarn-wrapping device and a hollow spindle yarn-wrapping device were created, and a layer of yarn or filament was applied to form a wrapped yarn. This type of wrapped yarn can overcome the shortcomings of the poor mechanical properties and poor wear resistance of electrospun nanofibers inherent in traditional weaving/knitting processes. The breaking strength of the wrapped yarn is found to be higher than that of the core yarn. According to the wrapping effect, the hollow spindle wrapping can be divided into three cases, namely h_n < d_w, h_n = d_w, and h_n > d_w, which respectively correspond to the three phenomena of over-wrapped, well-wrapped, and core-exposed yarn. When the wrapped structure is broken, the core yarn and the outer yarn are simultaneously stretched under the action of external tension. The tensile deformation of the core yarn is first broken, and the outer yarn then begins to experience individual stress, resulting in stretching and untwisting until it breaks. The research conclusions have guiding significance for the expansion of the application of nanofibers in traditional textiles.

Keywords:

• Electrospun nanofiber
• nanofiber yarn
• wrapped yarn
• mechanism

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

This work was supported by Fuzhou Science and Technology Achievement Transfer and Transformation Project (grant no. 2020-GX-03), the Open Project Program of Key Lab for Sport Shoes Upper Materials of Fujian Province, Fujian Huafeng New Material Co.,Ltd (grant no. SSUM217 and SSUM215), Natural Science Foundation of Fujian Province of China (grant no. 2021J01131876), Science and Technology Project of Minjiang University (grant no. MJY21022).