Journal of Textile Research ›› 2020, Vol. 41 ›› Issue (08): 179-187.doi: 10.13475/j.fzxb.20200306809

• Column: Medical Protective Textiles • Previous Articles     Next Articles

Structure and functions of medical protective clothing and trend for research and development

CHEN Shiping1,2, CHEN Min1,2, WEI Cen1,2, WANG Fujun1,2,3, WANG Lu1,2,4()   

  1. 1. College of Textiles, Donghua University, Shanghai 201620, China
    2. Key Laboratory of Textile Science & Technology, Ministry of Education, Donghua University, Shanghai 201620, China
    3. Engineering Research Center of Technical Textile, Ministry of Education, Donghua University, Shanghai 201620, China
    4. Key Laboratory of Biomedical Textile Materials and Technology in Textile Industry, Donghua University, Shanghai 201620, China
  • Received:2020-03-25 Revised:2020-05-15 Online:2020-08-15 Published:2020-08-21
  • Contact: WANG Lu E-mail:wanglu@dhu.edu.cn

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Abstract:

In order to understand the research status of medical protective clothing in depth, aiming at the medical needs, this research analyzed four types of protective clothing, i.e., the "three-rejection and one-resistance" finished spunbond-meltblown-spunbond (SMS) composite protective clothing, microporous film/nonwoven composite protective clothing, flash distillation nonwoven protective clothing, and positive pressure biological protective clothing, from the aspects of the occasions of use, design and preparation technology, structural efficiency characteristics and protective mechanism of composite material protective clothing. The study reveals that the SMS composite materials have better comfort, the microporous film/nonwoven composite materials offer better protection, while the flash vaporization materials demonstrate excellent comprehensive performance and achieve an ideal balance between comfort and protection. The key to achieve effective medical protective clothing is making breakthrough in the preparation technology which lies in the large-scale production of high-performance polytetrafluoroethy-lene membranes and the localization of the flash evaporation process. At the same time, nanotechnology can provide new ideas for the development of new materials. The future development direction of positive pressure biological protective clothing is the generalization of functions, monitoring automation and informatization.

Key words: medical protective clothing, positive pressure biological protective clothing, protective mechanism, polytetrafluoroethylene membrane, functional finish, nonwoven composite

CLC Number: 

  • TS106.67

Fig.1

Design ideas and production process of medical protective clothing"

Fig.2

Schematic diagrams and SEM images of two nonwoven composite materials. (a) SMS composite material; (b) Breathable microporous film/nonwoven composite material"

Fig.3

SEM image of flash spinning nonwovens"

Tab.1

Efficacy comparison of three materials"

材料名称 防水性 透气性 耐磨性
SMS复合材料 次之 最好 最差
微孔薄膜/非织
造布复合材料		 最好 最差 次之
闪蒸法材料 最好 次之 最好

Fig.4

Structure of medical protective clothing"

Fig.5

Schematic diagram of protection mechanism of fine particles"

Fig.6

Style and main components of power supply positive pressure biological protective clothing"

Tab.2

Comparison of performance parameters of two positive pressure biological protective clothing"

结构
形式		 防护
因子		 静态正压
差/Pa		 送风量/
(L·min-1)		 高效过滤
器的过滤
效率
(0.3 μm)/%		 自持
时间/
h
半身式 >50 000 ≥25 ≥150 >99.99 >6
全身式 >100 000 >120 ≥350 >99.99 >5
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