Chemical protection clothing in hot temperature environment

Abstract

Two permeable chemical protective clothing sets (clothing system 1 and clothing system 2) were tested in a hot temperature environment, in order to study the influence factors of clothing comfort. Methods: Using the sweating guarded hotplate and thermal manikin, two methods to measure are thermal resistance (Rct) and water-vapor resistance (Ret) values of the two clothing systems. Results: In sweating guarded hotplate test, clothing system 1 Rct11 is 14.51 × 10-3 m2K/W and the Ret11 is 6.87 m2Pa/W, clothing system 2 Rct21 is 22.62 × 10-3 m2K/W and the Ret21 is 10.28 m2Pa/W; in thermal manikin test, clothing system 1 Rct12 is 9.62 × 10-3 m2K/W and the Ret12 is 5.08 m2Pa/W, clothing system 2 Rct22 is 14.21 × 10-3 m2K/W and the Ret22 is 8.36 m2Pa/W. Conclusion: The air gap is the main factor which leads to the different results between two test methods. Optimization of chemical protective clothing structural design can effectively promote the clothing heat dissipation, which has a positive effect on the comfort and safety of chemical protective clothing.