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Effects of Air Gap Entrapped in Multilayer Fabrics and Moisture on Thermal Protective Performance
Li Jun 1 *,Wang Yunyi 2,Lu Yehu 3,Pan Jinhua 2
1.Protective clothing research center, Fashion Institue,Donghua University, ShangHai 200051
2.Key Laboratory of clothing design and technology,Ministry of Educaton,Shanghai 200051,China
3.Protective clothing research center,Fashion Institue,Donghua University,Shanghai 200051,China
*Correspondence author
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Subject:
Funding: Program for New Century Excellent Talents in University of Ministry of Education of China （No.NCET-10-0321）, Innovation Program of Shanghai Municipal Education Commission （No.12ZZ068）, Donghua University PhD Thesis Innovation Funding （No.NO.11D10711）
Opened online:12 July 2013
Accepted by: none
Citation: Li Jun,Wang Yunyi,Lu Yehu.Effects of Air Gap Entrapped in Multilayer Fabrics and Moisture on Thermal Protective Performance[OL]. [12 July 2013] http://en.paper.edu.cn/en_releasepaper/content/4550802
 
 
Thermal protection of firefighter protective clothing is greatly influenced by the air gap entrapped and moisture in clothing. In this paper, the effects of air gap size and position on thermal protective performance exposed to 84kW/m2 heat source were investigated. Water was also added to thermal liner to understand the effect of air gap coupled with moisture on thermal protection. It was indicated that the TPP of fabrics system increased with the air gap size. The air gap position also greatly influenced the heat transfer during exposure to flash fire. Moisture added weakened the positive effect of air gap size when the air gap exists far from heat source, and almost eliminated the favorable effect of air gap position. However, when there is no air gap or small air gap between outer shell fabric and moisture barrier, moisture increased the thermal protection performance of multilayer fabrics system. The results obtained suggested that certain air gap entrapped in fabrics system and clothing microclimate could improve thermal protection, and the complicated effect of moisture should also be considered.
Keywords:air gap; moisture; multilayer fabrics; thermal protective performance; bench top test
 
 
 

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