Heat strain experienced by individuals wearing chemical protective clothing(CPC)is severe and dangerous especially in hot-humid environment.The development of material science and interdisciplinary studies including e...Heat strain experienced by individuals wearing chemical protective clothing(CPC)is severe and dangerous especially in hot-humid environment.The development of material science and interdisciplinary studies including ergonomics,physiology and heat transfer is urgently required for the reduction of heat strain.The aim of this paper was to study the relationship among clothing thermal properties,physiological responses and environmental conditions.Three kinds of CPC were selected.Eight participants wore CPC and walked(4 km/h,two slopes with 5%and 10%)on a treadmill in an environment with(35±0.5)℃ and RH of(60±5)%.Core temperature,mean skin temperature,heart rate,heat storage and tolerance time were recorded and analyzed.Physiological responses were significantly affected by the clothing thermal properties and activity intensity in hot-humid environment.The obtained results can help further development of heat strain model.New materials with lower evaporative resistance and less weight are necessary to release the heat strain in hot-humid environments.展开更多
为实现定量分析化学防护服抗硫酸二甲酯（Dimethyl sulfate,DMS）渗透性能,建立了溶剂吸收结合气相色谱法对透过化学防护服面料的DMS累计渗透量进行测定的方法。以流量100 m L/min的N2为捕集气,丙酮为吸收剂,对透过化学防护服面料的DMS...为实现定量分析化学防护服抗硫酸二甲酯（Dimethyl sulfate,DMS）渗透性能,建立了溶剂吸收结合气相色谱法对透过化学防护服面料的DMS累计渗透量进行测定的方法。以流量100 m L/min的N2为捕集气,丙酮为吸收剂,对透过化学防护服面料的DMS进行收集,再采用气相色谱-火焰光度检测器对DMS的累计渗透量进行检测。在选定色谱条件下,DMS在0.5~5.0μg/m L范围内,其峰面积的平方根与浓度具有良好的线性关系,R2=0.9985,检出限为0.24μg/m L,精密度为3.9%~6.3%,方法回收率为95.2%~98.5%。对国内外各种化学防护服DMS在1 h内的累计渗透量的测定结果表明,化学防护服抗DMS的渗透能力与面料防护层的材质、厚度、染毒密度等因素密切相关。本方法可靠、简便,已应用于对化学防护服抗DMS渗透性能的检测。展开更多
文摘Heat strain experienced by individuals wearing chemical protective clothing(CPC)is severe and dangerous especially in hot-humid environment.The development of material science and interdisciplinary studies including ergonomics,physiology and heat transfer is urgently required for the reduction of heat strain.The aim of this paper was to study the relationship among clothing thermal properties,physiological responses and environmental conditions.Three kinds of CPC were selected.Eight participants wore CPC and walked(4 km/h,two slopes with 5%and 10%)on a treadmill in an environment with(35±0.5)℃ and RH of(60±5)%.Core temperature,mean skin temperature,heart rate,heat storage and tolerance time were recorded and analyzed.Physiological responses were significantly affected by the clothing thermal properties and activity intensity in hot-humid environment.The obtained results can help further development of heat strain model.New materials with lower evaporative resistance and less weight are necessary to release the heat strain in hot-humid environments.
