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Specifications of Heat Insulation Materials for Cold Protective Clothing under Different Temperatures

SU Jing-jie1,CUI Peng1,WANG Fu-mei1,YUAN Tong2 (1.College of Textiles,Donghua University,Shanghai 201620,China;2.Zhejiang Multi Glory Group Co.Ltd.,Hangzhou Zhejiang 311251,China)  
By the self-developed coefficient of thermal conductivity test devices and test method,the experimental relationship between the thickness of wadding used in cold protective clothing and its thermal conductivity was acquired.According to the distribution laws of a multi-layers clothing ensemble,the relationship between the engineering thickness of wadding and its heat resistance was obtained.Finally,the formula between the surface density of wadding and its heat resistance was established.A quick and easy method for determining the surface density of wadding under different temperatures to maintain human thermal comfort was proposed,which was considered on the human body metabolic heat production rate and the national standards about maintaining human thermal comfort.
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