STP1237: Humidity Considerations for Protective Fabric Evaluation

    Carr, ME
    Product Manager, Chemical Defense Materials, Gentex Corporation, Carbondale, PA

    Koals, MA
    Contract Development Manager and Senior Research Scientist, Rohm and Haas Company, Spring House, PA

    Vandersall, MT
    Contract Development Manager and Senior Research Scientist, Rohm and Haas Company, Spring House, PA

    Pages: 11    Published: Jan 1996


    Abstract

    An important consideration in the evaluation of personal protective equipment is the physical environment which the equipment will encounter during use. For many materials used in protective clothing, the effect of elevated humidity on protective capacity may be negligible. For protective clothing incorporating carbonaceous materials like activated charcoal, which protect by adsorbing hazardous vapors, however, humidity considerations may be extremely important. Various carbonaceous materials have been evaluated for protective capacity with industrially important, hazardous chemicals at elevated relative humidity. Significantly large differences are evidenced in the effect of humidity on adsorptive capacities of these materials. Standard protective fabric evaluation methods have been modified to allow elevation of relative humidity and monitoring of its effect on protective capacity. Protective capacity data for fabrics are similar to those obtained for the neat carbonaceous materials for at least one hazardous, industrial solvent, carbon tetrachloride.

    Keywords:

    protective clothing, charcoal, adsorption, chemical protection, humidity, test methods, permeability, organic solvents


    Paper ID: STP14063S

    Committee/Subcommittee: F23.80

    DOI: 10.1520/STP14063S


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