Abstract
Elastic warp-knitted composite fabrics with far-infrared emissivity and an anion-releasing property were prepared using bamboo charcoal (BC), copper (Cu), and phase-change material (PCM). The functional composite fabric, which was composed of self-made complex yarns with various twisting degrees and material composition, were created using a rotor twister and ring-spinning technique. The fabric structure was diversified by the feeding modes of weft yarn into a crochet-knitting machine. The twist number of complex yarns was optimized by tensile tenacity, twist contraction, and hairiness, and analysis showed that twisting at 12 twists per inch produced the highest tensile tenacity and appropriate twist contraction and hairiness. Comfort evaluation showed that the elastic composite fabrics with BC weft yarns exhibited higher water–vapor transmission rate and air permeability, reaching 876 g/m2∙ day and 73.2 cm3/s/cm2, respectively. Three structures of composite fabric with various weft yarns had >0.85 ε far-infrared emissivity and 350–420 counts/cm3 anion amount. The prepared elastic warp-knitted fabrics can provide a comfortable, dry, and breathable environment to the wearer and can thus be applied as health-care textiles in the future.
Highlights
Industrial textiles, apart from apparel textiles and decoration textiles, are divided into medical, traffic, industry, building, agricultural–fishery–mining, sport, and special-clothing textiles, as well as packaging materials and geotextiles [1]
The air permeability of Fabric B composed of bamboo charcoal (BC) and PC yarns achieved 73.2 cm3 /s/cm2, four times higher than that of plain woven fabrics made by filaments based on ASTM D737
This study prepared different structuresemissivity of elasticand warp‐knitted fabrics by changing the feeding were made of different compositions of ring-spun complex yarns (BC, PC, and BPC)The using mode offabrics weft yarns, which had far‐infrared emissivity and anion‐releasing property
Summary
Industrial textiles, apart from apparel textiles and decoration textiles, are divided into medical, traffic, industry, building, agricultural–fishery–mining, sport, and special-clothing textiles, as well as packaging materials and geotextiles [1]. Textile properties can be changed by selecting fiber material and spinning method. Majumdar et al fabricated three structures of knitted fabrics by blend spinning using cotton fibers and bamboo fibers. They showed that yarn constitution and fabric structure affected air permeability [9]. Lin et al showed that knitted fabrics composed of bamboo charcoal/stainless-steel complex yarns have a far-infrared function [10]. Stainless steel wire woven with other materials such as recycled polypropylene nonwoven or TPU yarn gives electromagnetic-shielding properties to the resulting composites [11,12]. Bamboo charcoal/copper/phase change complex yarns were fabricated using a rotor twister combined with ring-spinning techniques. The comfort and functional properties of composite fabrics with various structures comprising various compositions of weft yarns were evaluated afterwards
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