Journal of Textile Research ›› 2022, Vol. 43 ›› Issue (07): 60-66.doi: 10.13475/j.fzxb.20210306007

• Textile Engineering • Previous Articles     Next Articles

Thermal and moisture comfort performance of polyethylene knitted fabric

QIAN Juan1,2, XIE Ting1, ZHANG Peihua1(), FU Shaoju1   

  1. 1. College of Textiles, Donghua University, Shanghai 201620, China
    2. College of Textiles and Clothing, Xinjiang University, Urumqi, Xinjiang 830046, China
  • Received:2021-03-15 Revised:2022-03-20 Online:2022-07-15 Published:2022-07-29
  • Contact: ZHANG Peihua E-mail:phzh@dhu.edu.cn

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Abstract:

In order to study the influence of structure parameters of polyethylene knitted fabric on thermal and moisture comfort performance, three specifications of polyethylene filaments were selected to prepare double rib knitted fabrics. As comparative samples, polyester and cool polyester filaments were selected as well to prepare fabrics with the same structure. The effect of the type of raw material, the under-fill coefficient and the twist of the filaments on the porosity, air permeability, thermal conductivity and moisture permeability were investigated. It was found that when the fabric structure was the same, the raw material and under-fill coefficient were closely related to the air permeability, moisture permeability, and thermal conductivity of polyethylene fabric. Yarn twist was closely related to the thermal conductivity and moisture conductivity. Compared with polyester and cool polyester, polyethylene fiber was preferred for preparing cool functional textiles because of its better air permeability, moisture permeability and thermal conductivity resulting from the grooves on the surface, higher crystallization and orientation of the filament.

Key words: polyethylene filament, knitted fabric, thermal and moisture comfort, heat transfer property, moisture conductivity

CLC Number: 

  • TS156

Tab.1

Structural parameters of filaments"

试样编号 线密度 结晶度/% 取向度/%
PE1 11.1 tex(72 f) 60.90 85.4
PE2 11.1 tex(48 f) 63.89 81.4
PE3 8.3 tex(24 f) 58.83 78.3
PET 8.3 tex(36 f) 36.72 79.6
CPET 8.3 tex(72 f) 30.29 84.8

Fig.1

SEM images of section and surface of different filaments"

Tab.2

Specification parameters of knitting fabrics"

织物编号 原料 捻度/(捻·m-1) 加捻长丝线密度/tex 厚度/mm 面密度/(g·m-2) 未充满系数 孔隙率/%
F1 PE1 100 10.61 0.802±0.009 132.96±1.02 33.60 83.0
F2 PE1 150 10.96 0.849±0.010 136.16±1.13 38.72 83.3
F3 PE1 200 11.09 0.860±0.003 138.35±1.62 34.79 83.2
F4 PE2 100 11.02 0.860±0.008 148.84±1.21 30.51 82.0
F5 PE2 150 11.14 0.883±0.006 150.02±1.34 31.23 82.3
F6 PE2 200 11.30 0.887±0.003 164.39±2.01 35.38 80.7
F7 PE3 100 8.53 0.711±0.006 105.83±1.52 34.14 84.5
F8 PE3 150 8.66 0.728±0.014 107.66±0.72 34.10 84.6
F9 PE3 200 8.81 0.731±0.010 109.91±1.14 33.85 84.3
F10 PET 100 8.31 0.862±0.009 107.47±2.01 56.28 91.0
F11 CPET 100 8.11 1.000±0.005 112.67±2.25 61.03 91.8

Fig.2

Correlation between porosity and under-fill coefficient"

Fig.3

Permeability of samples"

Fig.4

qmax value when temperature difference at 15 ℃"

Fig.5

Thermal resistance and thermal conductivity"

Tab.3

Moisture resistance of samples"

织物
编号		 湿阻/
(m2·Pa·W-1)		 透湿率/
(g·m-2·h-1·Pa-1)		 透湿
指数
F1 2.10 0.76 0.39
F2 2.36 0.68 0.41
F3 2.12 0.75 0.52
F4 2.48 0.64 0.30
F5 2.62 0.61 0.45
F6 2.89 0.55 0.46
F7 2.12 0.75 0.55
F8 1.88 0.85 0.65
F9 1.91 0.84 0.66
F10 1.98 0.81 1.02
F11 2.13 0.75 1.00

Fig.6

Wicking height-time curve of different fabrics with same twist. (a) Wicking height in wale; (b) Wicking height in course"

Fig.7

Wicking height-time curves in course of PE fabrics with different twist factor. (a) Fabrics made up of PE1; (b) Fabrics made up of PE2; (c) Fabrics made up of PE3"

Fig.8

Wicking height-time curves in wale of PE fabrics with different twist factor. (a) Fabrics made up of PE1;(b) Fabrics made up of PE2;(c) Fabrics made up of PE3"

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