Design, Preparation and Properties of Bio-inspired Hierarchical Structure Yarns with Enhanced Thermal Insulation and Water Transfer Ability

doi:10.1007/s40242-021-1112-8

Chemical Research in Chinese Universities ›› 2021, Vol. 37 ›› Issue (3): 558-564.doi: 10.1007/s40242-021-1112-8

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Design, Preparation and Properties of Bio-inspired Hierarchical Structure Yarns with Enhanced Thermal Insulation and Water Transfer Ability

JIA Yueran¹, GONG Shun¹, ZHANG Shu², ZHAO Shikun¹, QIN Zhen¹, PAN Kai²

1. Beijing Key Laboratory of Advanced Functional Polymer Composites, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, P. R. China;
2. College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, P. R. China

Received:2021-03-14 Revised:2021-05-10 Online:2021-06-01 Published:2021-05-11
Contact: PAN Kai, ZHANG Shu E-mail:pankai@mail.buct.edu.cn;zhangshu@mail.buct.edu.cn
Supported by:
This work was supported by the Major Scientific and Technological Innovation Project of Shandong Province, China(No.2019JZZY020218).

Abstract

Abstract: Encouraged by the porous and stable structure of cold-resist animals' hair or feather, bio-inspired hierarchical structure yarns combining polyacrylonitrile(PAN) nanofibers and polypropylene(PP) hollow microfibers have been developed by a modified conjugate electrospinning technology. Physical cross-linking has been built to increase fibers adhesion and construct interlayer support for nanofibrous assembly. The nanofibers and hollow microfibers construct a stable porous structure with porosity of 62%, providing excellent thermal insulating ability[temperature diffe-rence(|ΔT|) between skin and yarn surface is 4.9℃] as well as good mechanical property. More interestingly, the water transfer ability (infiltrate the yarn in 10 s) of synthetic fibers has been improved greatly by the combination of thin diameter nanofibers to the yarn. It is believed that the research lays the foundation for bio-inspired engineering technology in the manufacture of thermal comfort.

Key words: Bio-inspired material, Hierarchical structure yarn, Thermal insulation, Water transfer ability

JIA Yueran, GONG Shun, ZHANG Shu, ZHAO Shikun, QIN Zhen, PAN Kai. Design, Preparation and Properties of Bio-inspired Hierarchical Structure Yarns with Enhanced Thermal Insulation and Water Transfer Ability[J]. Chemical Research in Chinese Universities, 2021, 37(3): 558-564.

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Design, Preparation and Properties of Bio-inspired Hierarchical Structure Yarns with Enhanced Thermal Insulation and Water Transfer Ability

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