Journal of Textile Research ›› 2019, Vol. 40 ›› Issue (11): 145-150.doi: 10.13475/j.fzxb.20181002707

• Apparel Engineering • Previous Articles     Next Articles

Influence of air gap on thermal and moisture properties of permeable protective clothing

HU Ziting1, ZHENG Xiaohui2, FENG Mingming1, WANG Yingjian1, LIU Li1(), DING Songtao2   

  1. 1. School of Fashion, Beijing Institute of Fashion Technology, Beijing 100029, China
    2. State Key Laboratory of NBC Protection for Civilian, Research Institute of Chemical Defense of Military Academic of Sciences, Beijing 100191, China
  • Received:2018-10-16 Revised:2019-07-17 Online:2019-11-15 Published:2019-11-26
  • Contact: LIU Li E-mail:fzyll@bift.edu.cn

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Abstract:

In order to find the suitable clothing ease to improve thermal and moisture comfort of permeable nuclear biological and chemical (NBC) protective clothing, the wearing experimental procedure was designed. 5 pieces of clothing were observed under a normal temperature and static condition. Thermal manikin and three-dimensional scanning technology were used in a climate chamber to explore the influence of air gap on thermal and vapor resistance of NBC protective clothing. The results showed that with the increase of the ease of NBC protective clothing, the volume of air gap under the garment changes similarly with the average thickness of the air gap, and the air gap has a significant impact on total thermal resistance and vapor resistance. The total thermal resistance of the clothing increases with the increase of the air gap, and when the air gap exceeds by a certain volume, the thermal resistance of the clothing starts to drop. The total vapor resistance increases with the increase of air gap under the clothing.

Key words: nuclear biological and chemical protective clothing, clothing air gap, clothing ease, thermal manikin, thermal resistance, vapor resistance

CLC Number: 

  • TS941.17

Fig.1

Photo images of thermal manikin in different wearing conditions. (a) Basic garments and protective equipment; (b) NBC protective suit"

Fig.2

Permeable NBC protective clothing design. (a)Jacket;(b)Trouser"

Fig.3

Measurements of thermal manikin"

Tab.1

Measurements of permeable NBC protective clothing cm"

透气型NBC
防护服编号		 前身长 后身长 胸围 袖长 袖肥 裤长 腰围 臀围 横裆
T01 68.5 71.5 106 77.5 53 108 75 102 68.0
T02 68.5 71.5 114 77.5 56 108 84 110 72.5
T03 71.0 74.0 122 80.0 59 112 93 118 77.0
T04 71.0 74.0 130 80.0 62 112 100 126 81.5
T05 73.5 76.5 138 82.5 65 116 109 134 86.0

Fig.4

Clothing system scanning image. (a) Basic garments and equipments; (b) Permeable NBC protective suit; (c) Basic garments and equipments aligned with NBC protective suit"

Fig.5

Air gap volume and average thickness of permeable NBC protective clothing"

Fig.6

Cross-sections taken at critical body parts from aligned 3-D body scanning. (a) Chest; (b) Waist; (c) Hip; (d) Thigh; (e) Calves"

Tab.2

Total thermal and vapor resistance of different permeable NBC protective clothing"

NBC防护服
组合编号		 热阻/(m2·℃·W-1) 湿阻/(m2·Pa·W-1)
均值 标准差 均值 标准差
S01 0.327 0.006 54.017 0.312
S02 0.365 0.004 56.971 0.257
S03 0.373 0.001 57.744 0.365
S04 0.369 0.002 59.031 0.281
S05 0.365 0.005 59.702 0.139

Fig.7

Relationship between air gap volume and thermal resistance (a) & vapor resistance (b) of NBCprotective clothing"

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