Evaluation of Chemical Protective Garment Seams and Closures for Resistance to Liquid Penetration

摘要: Chemical penetration is defined as bulk flow of liquid through porous materials, closures, pinholes, seams, or imperfections in protective clothing material. The objective this research was to evaluate bulky seams and closures for resistance penetration, using the ASTM Test Resistance Protective Clothing Materials Penetration by Liquids (F 903-84). test cell method a mechanical device which costs less than $1000. A modification used throughout course study. are explained detail. challenge chemical determined visual inspection material cell. specimen mounted cell, then charged with liquid. observed after 5 min at atmospheric pressure, 10 13.8 kPa (2 psig). appearance drop indicated failure. Eight different were evaluated against several liquids method. data control specimens (specimens without closures), demonstrate utility Problems associated sealing these items into well solutions critically evaluated.