Low Volatile Organic Compound (VOC) Chemical Agent Resistant Coating (CARC)

摘要

Chemical warfare causes many problems on the battlefield, among which is decontamination of exposed equipment. Because of this threat, the US Army has required the use of a Chemical Agent Resistant Coating (CARC) system on its equipment, beginning in FY 85. The equipment covered by this requirement includes all Army combat, combat support, and essential ground support equipment, plus tactical wheeled vehicles and aircraft. These coatings resist penetration of the paint film by chemical agents and make decontamination procedures easier. The current topcoats are aliphatic polyurethanes meeting either MIL-C-46l68 or MIL-C-53039 military specifications. While they provide the quality performance characteristics of a commercial automotive-type finish, such as exterior durability and excellent chemical resistance, they must also be able to withstand decontamination procedures and provide camouflage properties in the visible and near infrared regions of the spectrum. In response to a variety of environmental regulations and worker safety issues, the original material, first developed in 1974, has evolved into a much more environmentally acceptable coating.