消防员防护服面料的热湿舒适性

为研究消防员防护服面料的舒适性并考察其是否满足欧美国家相关标准,选取了我国消防员防护服常用的几种面料,进行单层织物热阻和湿阻以及多层织物热阻、湿阻和总热损失的测试与分析,考察空气层对多层织物热阻的影响,并将测试结果与欧美标准的相关要求进行对比。结果表明:在厚度大致相同时,外层面料的密度对热阻和湿阻影响较大;因为隔热层材料是非织造布结构,热阻和湿阻较大;空气层的位置对多层织物的热阻值影响不大,但其厚度对多层织物的热阻影响较大;选取的几种面料组合,湿阻低于30 Pa·m~2/W,总热损失高于205 W/m~2,均满足欧美国家相关标准要求。

Heat-moisture comfort of fire-fighter's protective clothing materials

In order to study heat-moisture comfort of fire-fighter's protective clothing and investigate whether it meets the requirements of European and American standards,thermal resistance,evaporative resistance and total heat loss of various fire-fighter's protective clothing materials were tested and analyzed.Furthermore,the influence of air gap on the thermal resistance of multilayer fabrics was also studied.The results were compared with requirements of European and American standards.It is found that when thickness of the fabrics is substantially the same,density affects greatly on thermal resistance and evaporative resistance of outer shell materials.For thermal barrier material,its thermal resistance and evaporative resistance are much higher because of its non-woven structure.Location of air gap has little effect on the thermal resistance of multilayer fabrics.However,the thickness of air gap may have great effect on the thermal resistance of fire-fighters' protective clothing.The evaporative resistance of the multilayer fabrics is lower than 30 Pa· m2/W and the total heat loss thereof is higher than 205 W/m2,which meets the requirements of European and American standards.