Reduced Volatile Organic Compounds (VOC) Chemical Agent Resistant Coating (CARC)Primer

摘要

The Chemical Agent Resistant Coating (CARC) system is required on all combat,combat support, and essential ground support equipment, plus tactical wheeled vehicles and aircraft, in order to meet the threats of chemical warfare. When the Army required implementation of CARC in FY85, the military specification MIL-P-53022, Primer, Epoxy Coating, Corrosion Resisting, Lead and Chromate Free became the workhorse default primer in the CARC system. Since Federal and local regulations resulting from the Clean Air Act and its amendments restrict the amount of Volatile Organic Compounds (VOC) emitted during the application of protective coatings, the specification was revised in 1988 to include a higher solids material which had a maximum VOC content of 3.5 lb/gal, but there will he lower limits in the future. This report summarizes progress in the investigation of epoxy binder technologies which have the potential for providing equivalent or better performance compared to the present primer, but at a reduced VOC of 2.8-lb/gal maximum.