Evaluation of Supercritical CO2 Application of CARC

摘要

At the request of the U.S. Army Tank-automotive and Armaments Command (TACOM), the Coating Technologies Team of the U.S. Army Research Laboratory (ARL), Weapons and Materials Research Directorate (WMRD), evaluated a chemical- agent resistant coating (CARC) reformulated to be compatible with the supercritical CO2 application process. Test panels were prepared by the Concurrent Technologies Corporation (CTC) and submitted to ARL's Experimental Products Program (EPP) for approval. Thus far, four different and separate formulations have been submitted, and all have filled, including the fourth and most recent submission prepared at the CTC on 12 November 1999. In each case, excessive voids and pinholes riddled the coating film applied with supercritical CO2. To date, the use of supercritical CO2 has not been successful in demonstrating its ability to apply CARCs free of voids or pinholes. This report summarizes the test program and the results through 24 November 1999.