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Chemical Agent Resistant Coating (CARC) System for Military Vehicles

The United States Army and Marine Corps (USMC) paint their vehicles with the Chemical Agent Resistant Coating (CARC) system. This system consists of a pretreatment, an epoxy primer, and polyurethane topcoat, similar to many other industrial paint systems, but with added functional requirements (e.g., chemical agent resistance, camouflage, and signature reduction) unique to these paints. The systems that utilize these coatings are also designed for specific capabilities, of which corrosion is usually a lower priority. Lastly, the vehicles and equipment of the Army and USMC typically operate in harsh environments, which are highly corrosive. 

Product Number: 41216-996-SG
Author: Alex G. Piazza
Publication Date: 2016
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The United States Army and Marine Corps (USMC) paint their vehicles with the Chemical Agent Resistant Coating (CARC) system. This system consists of a pretreatment, an epoxy primer, and polyurethane topcoat, similar to many other industrial paint systems, but with added functional requirements (e.g., chemical agent resistance, camouflage, and signature reduction) unique to these paints. The systems that utilize these coatings are also designed for specific capabilities, of which corrosion is usually a lower priority. Lastly, the vehicles and equipment of the Army and USMC typically operate in harsh environments, which are highly corrosive. All of these factors provide a challenge to the CARC system to protect the underlying substrates of vehicles from corrosion. The variability of the operational environment, the functional requirements of these coating (beyond aesthetics) presents a challenge in preventing corrosion on these vehicles. This paper will discuss some of the common issues that are experienced by depots, corrosion repair facilities (CRFs), and active units. Some of these issues include the compatibility of the waterborne and solvent-borne coatings, excessive corrosion of steel, and unwanted coating loss in high-wear locations like trailer beds and underbody. This paper will provide examples of these issues and research initiatives that have investigated specific solutions to these issues.

 

The United States Army and Marine Corps (USMC) paint their vehicles with the Chemical Agent Resistant Coating (CARC) system. This system consists of a pretreatment, an epoxy primer, and polyurethane topcoat, similar to many other industrial paint systems, but with added functional requirements (e.g., chemical agent resistance, camouflage, and signature reduction) unique to these paints. The systems that utilize these coatings are also designed for specific capabilities, of which corrosion is usually a lower priority. Lastly, the vehicles and equipment of the Army and USMC typically operate in harsh environments, which are highly corrosive. All of these factors provide a challenge to the CARC system to protect the underlying substrates of vehicles from corrosion. The variability of the operational environment, the functional requirements of these coating (beyond aesthetics) presents a challenge in preventing corrosion on these vehicles. This paper will discuss some of the common issues that are experienced by depots, corrosion repair facilities (CRFs), and active units. Some of these issues include the compatibility of the waterborne and solvent-borne coatings, excessive corrosion of steel, and unwanted coating loss in high-wear locations like trailer beds and underbody. This paper will provide examples of these issues and research initiatives that have investigated specific solutions to these issues.

 

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