防护手套热传递性测试分析

Analysis of heat transfer of protective gloves

防护手套的热传递性主要受手套材料和环境条件的影响。介绍了ThermalHand测试系统及其工作原理,利用人工气候室模拟理想的试验环境条件,应用“两步测量法”对常用的防护手套进行检验测试,分析了环境温度和空气层两大主要因素对手套热阻值的影响,最后对比了防护手套不同部位热损值的差异,分析了差异产生的原因。研究表明:随温度的升高,样本防护手套热阻值呈现先增大后减小的规律;热阻值与防护手套的尺寸呈正相关;同种手套不同部位之间的热损值与其暴露于环境中的面积有关。

The heat transfer of finished protective gloves are mainly affected by the glove material and environmental conditions.The Thermal Hand Test System and its working principle is introduced,artificial climate chamber is used to simulate ideal experimental environment conditions,“two-step method”is applied to test commonly used protective gloves,the impact of two main factors including environmental temperature and air layer on the gloves on the thermal resistance of the gloves are analyzed,finally the heat loss value differences among different parts of protective gloves are compared and the causes of the differences are analyzed.The results show that the thermal resistance of sample protective gloves increase at first and then decrease with the increase of temperature.The thermal resistance is positively related to the size of protective gloves.The heat loss between different parts of the same glove is related to the area exposed to the environment.