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U.S. Naval Research Laboratory develops environmental protection coating on aircraft surface

U.S. Naval Research Laboratory develops environmental protection coating on aircraft surface

June 11, 2019

the corrosion science and Engineering Center of the U.S. Naval Research Laboratory (NRL) has developed a safer and more environmentally friendly surface coating, which has been applied to the surface of naval and Marine Corps aircraft

the surface coating is a one component (1K) polysiloxane based on organosilane polymer, which will not produce harmful isocyanates and other harmful air pollutants. At present, the U.S. Department of defense and commercial aircraft use a two-component (2k) polyurethane surface coating, which will produce harmful isocyanates and harmful air pollutants

Dr. Eric ITZ, senior research chemist of the U.S. Naval Research Office and engineer of the aircraft division of the Naval Aviation Center, applied a new surface coating coating on a "Bumblebee" f/a-18 fighter at the Naval Air Station in pattakerson River, Maryland. In addition, the new surface coating is also applied to the uh-1y "venom" helicopter at the Marine Corps New River Air Station in Jacksonville, North Carolina, and the ah-1z "Viper" helicopter at the Marine Corps Pendleton base in California. The performance evaluation of new surface coatings on these aircraft is planned to be carried out for 1 to 2 years

Dr. izz said, "we are proud of this achievement. Polyurethane surface coating has been used on naval aircraft for decades, but in recent years, we have developed an environmentally friendly alternative surface coating until the specimen is crushed, which has laboratory performance similar to traditional coatings and is easy for painters to use."

according to the occupational safety and Health Administration (OSHA), exposure to isocyanates can cause skin and mucous membrane inflammation, chest tightness and dyspnea, as well as allergies. Even low doses can lead to serious asthma attacks; Harmful air pollutants are classified as potential human carcinogens

using polysiloxane instead of isocyanate provides a safer coating for painters and related maintenance personnel. However, the new surface coating also contains a low content of volatile organic compounds, which are released during the spraying process and are harmful to air quality

single component polysiloxane surface coating does not need to be measured. All chemical raw materials are placed in one container, so the preparation time is reduced. Huaibei city also promotes the demonstration and utilization in many ways, and can make the color of the aircraft surface more uniform. The container can also be resealed for future use, which will reduce the production and disposal costs of hazardous waste

chemists from iz and other naval research laboratories have previously developed surface ship coatings, but aircraft coatings have higher requirements. Dr. iz said: "it is more difficult to develop new high-performance surface coatings for aircraft than for ships. Aircraft can only rely on imported aluminum shell, which means that the coating must provide greater flexibility, especially in the low-temperature environment of high-altitude flight. The surface coating of aircraft must also have stealth characteristics for a long time."

as part of the large patent portfolio of the Naval Research Laboratory, U.S. patents, and are related to polymer and polysiloxane coating technology. The first two patents are exclusively authorized by NCP paint company in Niles, Michigan, which produces stealth surface coatings for demonstration and field verification. NCP paint company is also using this technology to develop semi gloss surface coatings for aircraft

the application of these surface coatings is coordinated and managed by the Naval Aviation Systems Command, sponsored by the environmental safety technology certification program of the Ministry of defense, and funded by the office of Naval Research (onr)

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