Journal of Textile Research ›› 2021, Vol. 42 ›› Issue (09): 24-30.doi: 10.13475/j.fzxb.20210300607

• Invited Column:Intelligent fiber and products • Previous Articles     Next Articles

Radiative cooling nanofiber medical fabrics and sensor system integration

WU Qinxin, HOU Chengyi(), LI Yaogang, ZHANG Qinghong, QIN Zongyi, WANG Hongzhi   

  1. State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, Shanghai 201620, China
  • Received:2021-03-01 Revised:2021-05-09 Online:2021-09-15 Published:2021-09-27
  • Contact: HOU Chengyi E-mail:hcy@dhu.edu.cn

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Abstract:

Traditional medical protective clothing offers limited functions and lacks of wear comfort. Accordingly, this research focused on the preparation of radiative cooling silicon dioxide/poly(1,1-difluoroethylene) nanofibers through electrospinning, and the making of nonwoven fabrics using hot pressing to obtain a new protective clothing fabrics (SiO2/PVDF-NWF). The microstructure and infrared transmittance of SiO2/PVDF nanofibers were measure and characterized, and the wearing comfort, protection performance, and radiative cooling effect of the as-obtained SiO2/PVDF-NWF were tested. The results show that with 15% PVDF spinning solution, optimal infrared transmittance of SiO2/PVDF nanofibers is achieved when the SiO2 particle size is 2 μm and the mass ratio of SiO2/PVDF is 0.15. The temperature inside clothes was found 2 ℃ lower than that in the traditional protective clothing and the relative humidity was reduced by 5% after replacing part of the fabric on the traditional protective clothing with SiO2/PVDF-NWF. In addition, the multifunctional protective system is constructed by integrating sensors for blood oxygen, temperature, humidity and positioning on the radiative cooling protective clothing fabrics, offerring a broad application prospect for medical applications.

Key words: protective clothing, silicon dioxide/poly(1,1-difluoroethylene), electrospinning, radiative cooling, multifunctional protective clothing

CLC Number: 

  • TS102.6

Fig.1

SEM images of SiO2/PVDF nanofibers with different SiO2 particle size"

Fig.2

Infrared transmittance of SiO2/PVDF nanofibers with different SiO2 particle sizes"

Fig.3

SEM images of SiO2/PVDF nanofibers with different PVDF mass fraction"

Fig.4

Infrared transmittance of SiO2/PVDF nanofibers with different PVDF mass fraction"

Fig.5

SEM images of SiO2/PVDF nanofibers with different SiO2 doping levels"

Fig.6

Infrared transmittance of SiO2/PVDF nanofibers with different SiO2 doping levels"

Fig.7

Air permeability of protective clothing fabric"

Tab.1

Walter vapour transmission rate and thermal resistance of SiO2/PVDF-NWF and M-NWF"

样品 透湿率/(g·m-2·h-1) 热阻/(℃·m2·W-1)
M-NWF 26.762 0.115 9
SiO2/PVDF-NWF 240.658 0.083 8

Fig.8

Performance test chart of new protective clothing fabric. (a) Stress-Displacement curve; (b) Contact angle of NWF and SiO2/PVDF"

Fig.9

Sky radiation cooling test. (a) Schematic diagram of temperature measuring device; (b) Solar power; (c) Temperature-time curve of M-NWF; (d) Temperature-time curve of SiO2/PVDF-NWF"

Fig.10

Temperature and humidity of micro environment near the skin when wearing different protective clothing. (a) Temperature change; (b) Humidity change"

Fig.11

Schematic diagram of multifunctional protective clothing system"

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