热水侵入条件对织物防护性能的影响

Thermal protective performances of fabric upon hot water splashes

产业工人在工作时可能会遭受高温热水的伤害,基于此对热水侵入条件下织物的传热规律进行了探讨。利用高温热水防护性能测试系统,通过正交试验对不同热水温度、侵入角度和侵入高度条件下11种织物进行测试,采用2级烧伤时间作为热水防护性能评价指标,分析了织物特性和热水侵入条件与织物热水防护性能之间的关系。结果表明:不同织物的热水防护性能存在差异,防水整理可以明显提高织物热水防护性能。织物不同位置的热水防护性能受热水侵入条件和织物特性的影响。水温是影响织物热水防护性能的最主要因素。织物上方的热水防护性能受热水侵入条件影响较大,织物中下方的热水防护性能受织物特性的影响较织物上方大。

As industrial workers may be threatened by hot water splashes, the study investigated the heat transfer of fabric upon hot water splashes. The orthogonal experiment was designed to test performance of 11 kinds of fabrics under conditions different water temperatures, splash angles and splash heights. The experiment was conducted by a hot water protective performance tester, and the 2-grade burn time was adopted to characterize the thermal protective performance of fabric. The effects of the fabric property and splash condition on the thermal protective performance were analyzed. The results show that water-proof finish can improve the thermal protective performance of fabric. The splash condition and fabric peoperty influence the thermal protective performance in different position of fabric. The temperature of hot water is the most important factor influencing the thermal protective performance. The thermal protective performance of upper position of fabric is primarily related to the splash condition. The protective performance of the lower position is influenced mostly by the fabric property.