Impact of a Petroleum-Based Corrosion Inhibitor (PBCI) on a Two- Component Solventborne Chemical Agent Resistant Coating (CARC)

摘要

Test specimens of steel, aluminum armor, and fiberglass composite representative of materials used in U.S. Army systems were coated using Chemical Agent Resistant Coating (CARC) (U.S. Department of Defense. Chemical Agent Resistant Coating CARC system Application Procedures and Quality Control Inspection. MIL-C-53072, Washington, DC, 1992). The CARC primer MIL-P-53022 (U. S. Department of Defense. Primer, Epoxy Coating, Corrosion Inhibiting Lead and Chromate Free. MIL-P-53O22-10, Washington, DC, 1992) and the two-part topcoat MIL-C-46168 (U.S. Department of Defense. Coating, Aliphatic Polyurethane Chemical Agent Resistant. MIL-C-46168, revision D, amendment 3, Washington, DC, 1993) were chosen as the basis for the CARC system Specimens were examined for adhesion, recoatability, color, infrared (IR) signature, gloss, ultraviolet (UV) resistance, chemical agent resistance, film hardness, and resistance to DS2 decontamination solution to determine whether the coating properties were affected by the use of a commercial petroleum-based corrosion inhibitor (PBCI). This commercial product known as CarWell T-32 is currently proposed for utilization on Army tactical systems. CarWell was the only PBCI evaluated in this study, thus 'PBCI' will refer to CarWell throughout this report. Procedures prescribed by the manufacturer for application, cure time, and removal of excess treatment were followed. Selected specimens were given longer dwell periods to determine the characteristics of the CARC system's absorption of the PBCI. In addition, specimens with and without the treatment underwent accelerated corrosion tests to determine if there were changes in coating performance.