Ni–Fe alloy soft magnetic protective coating of new energy vehicles and the internal electromagnetic radiation characteristics

被引:0
作者
Yating Lei
Yinxiang Lu
机构
[1] Fudan University,Department of Materials Science
[2] Zhongshan-Fudan Joint Innovation Center,undefined
[3] Yiwu Research Institute of Fudan University,undefined
来源
Journal of Materials Science: Materials in Electronics | 2024年 / 35卷
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摘要
With the development of intelligent, unmanned and connected cars, the electromagnetic environment inside the car is becoming more and more complex. Electromagnetic radiation can cause a variety of biological effects, thus endangering human health. This article studies the internal electromagnetic radiation of electric vehicles and develops coatings for 9 kHz-30 MHz wide-band electromagnetic shielding inside the vehicle. After analyzing the characteristics of various materials, including silicone, polyurethane, and epoxy resin, it was determined that polyurethane was the most suitable base resin for the coating. The optimal solid content of the coating system was found to be 75%, and the filler selected was a permalloy powder with a nickel content of 80%, which was modified with KH550 and adjusted using ethyl acetate. By controlling the particle size to 1000 mesh, an electromagnetic shielding coating sample was produced with an effectiveness of 40 dB in the 9 kHz-30 MHz frequency range. The coating has been shown to significantly reduce electromagnetic radiation within electric vehicles and has potential for use in any industry that requires electromagnetic shielding. Its market value is expected to be substantial.
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