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| Corrosion Protection Technology and Experimental Verification for Vehicles in Marine Atmospheric Environment |
| Received:February 23, 2025 Revised:March 31, 2025 |
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| DOI：10.7643/issn.1672-9242.2025.05.015 |
| KeyWord:marine atmospheric environment corrosion protection vehicles experimental verification graphene modified polyurethane hydrophobic coating |
| Author | Institution |
| ZHAO Yongtao |
The 92228th Unit of PLA, Beijing , China |
| ZHANG Yaru |
Shanghai Yinai New Materials Technology Co., Ltd., Shanghai , China |
| WANG Zhihao |
The 92228th Unit of PLA, Beijing , China |
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| Abstract: |
| The work aims to validate and compare vehicle corrosion protection technologies in high-temperature, high-humidity, and high-salt-spray environments typical of southern marine atmospheres. To address vehicle corrosion issues in high-temperature, high-humidity, and high-salt-spray environments, laboratory simulations of marine atmospheric conditions were conducted to test and validate typical corrosion protection measures. Experimental data were collected and analyzed to evaluate the effectiveness of corrosion protection technologies. The graphene-based heavy-duty anti-corrosion system showed no coating peeling or blistering after 3 000 hours of salt spray and aging tests. The adhesion strength before and after the tests remained above 8 MPa, indicating that this anti-corrosion system could provide protection for approximately 15-25 years in high-humidity, high-salt, and high-temperature environments. The modified polyurethane conformal coating on circuit board samples exhibited no white spots, rust, or other defects after salt spray, corrosion, thermal shock, and mold tests. The adhesion of hydrophobic coating samples before and after the salt spray test was tested and compared, indicating that the hydrophobic coating samples had strong adhesion to optical lenses before and after salt spray tests, and had good bonding strength in high-salt, high-temperature, and high-humidity environments. No white spots or rust were observed on the coating surface after salt spray and mold tests. By simulating marine atmospheric conditions, the corrosion protection technologies for vehicle body metals, electrical equipment, and optical devices were validated. It is proved that the graphene-based heavy-duty anti-corrosion system is suitable for vehicle body protection, the modified polyurethane conformal coating is effective for electrical equipment protection, and the hydrophobic coating is ideal for optical device protection. These findings provide technical support for the application of typical corrosion protection technologies in vehicles. |
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