Accession Number : ADA302828

Title :   Nondestructive Reactivation of Chemical Protective Garments.

Descriptive Note : Final rept. Jun 85-Jul 89,

Corporate Author : INDUSTRIAL AND BIOMEDICAL SENSORS CORP WALTHAM MA

Personal Author(s) : Chang, Kuo W. ; Chang, Sanlu Y. ; Klemperer, Elizabeth

PDF Url : ADA302828

Report Date : DEC 1995

Pagination or Media Count : 101

Abstract : In the near future, chemical protective combat uniforms may be worn by Army personnel on a continuous basis. Activated carbon, the operative component, has diminished capacity for sorbing chemical agents after it has been exposed to dirt, sweat, cigarette smoke, engine exhaust, petroleum products and numerous other elements routinely present in the battlefield environment. This report summarizes the development of two nondestructive methods for cleaning and reactivating soiled chemical protective garments. Complete reactivation was achieved when the aqueous! i-propanol! iodine displacement method of Manes, which removed all but pure hydrocarbon oil soils from the current overgarment Type III foam or Kynol activated carbon fiber material, was applied in nonaqueous solvent. Subsequently, a nonaqueous solvent method that requires less handling was chosen in designing a truck-mounted system. It features non-agitative flow of methylene chloride and methanol around the chemical-protective garments suspended between ultrasonic transducers. Both methods restore full sorptivity to the Type III foam liner. There is a one-time 10% loss of activated carbon without any loss of sorptivity. The volatile solvents are more easily removed, and can be economically recovered. Overall features of a mobile unit have been sketched.

Descriptors :   *NONDESTRUCTIVE TESTING, *ACTIVATED CARBON, *CHEMICAL AGENTS, *PROTECTIVE CLOTHING, WARFARE, ACTIVATION, EXPOSURE(GENERAL), ARMY PERSONNEL, BATTLEFIELDS, CHEMICALS, MATERIALS, DISPLACEMENT, CARBON FIBERS, PURITY, SOILS, ULTRASONICS, METHANOLS, MOBILE, HYDROCARBONS, WEAR, IODINE, CHLORIDES, DIRT, ENGINES, SOLVENTS, VOLATILITY, TRANSDUCERS, MOUNTS, TRUCKS, METHYLENES, OILS, ORGANIC SOLVENTS, PETROLEUM PRODUCTS, UNIFORMS, TOBACCO SMOKING.

Subject Categories : Protective Equipment
      Miscellaneous Materials
      Chemical, Biological and Radiological Warfare

Distribution Statement : APPROVED FOR PUBLIC RELEASE