Graphite sheet surface load magnetic alloy particle wave-absorbing material and preparation method thereof

Abstract

The invention discloses a graphite sheet surface load magnetic alloy particle wave-absorbing material and a preparation method thereof. The preparation method comprises the steps: graphite granules arThe invention discloses a graphite sheet surface load magnetic alloy particle wave-absorbing material and a preparation method thereof. The preparation method comprises the steps: graphite granules arlectromagnetic wave absorbing performance, especially absorb lower-frequency electromagnetic waves and have an important development prospect in the field of electromagnetic wave shielding, absorbin electromagnetic wave absorbing performance, especially absorb lower-frequency electromagnetic waves and have an important development prospect in the field of electromagnetic wave shielding, absorbing and hiding materials, and the like.g and hiding materials, and the like.e ultrasonically processed in an organic solvent, then refluxed in mixed acid and suspended into a coprecipitation solution after being separated and cleaned; the pH value is regulated from 9 to 14 toe ultrasonically processed in an organic solvent, then refluxed in mixed acid and suspended into a coprecipitation solution after being separated and cleaned; the pH value is regulated from 9 to 14 to obtain precipitates; the obtained precipitates are separated and cleaned and then are processed in hydrogen or mixed gas of hydrogen and argon; and the electromagnetic wave absorbing materials are obobtain precipitates; the obtained precipitates are separated and cleaned and then are processed in hydrogen or mixed gas of hydrogen and argon; and the electromagnetic wave absorbing materials are obtained. The electromagnetic wave absorbing materials are prepared by the method. The method has simple processes and is easy to realize mass production, and can conveniently regulate the magnetic electained. The electromagnetic wave absorbing materials are prepared by the method. The method has simple processes and is easy to realize mass production, and can conveniently regulate the magnetic electricity performance and the wave-absorbing performance of products by regulating alloy component proportion and heat processing temperature. The electromagnetic wave absorbing materials have excellenttricity performance and the wave-absorbing performance of products by regulating alloy component proportion and heat processing temperature. The electromagnetic wave absorbing materials have excellente

Description

Magnetic alloy particle-loaded microwave-absorbing material on graphite flake surface and preparation method thereof technical field The invention belongs to the field of preparation of electromagnetic wave absorbing materials, in particular to a wave absorbing material loaded with magnetic alloy particles on the surface of graphite flakes and a preparation method thereof. Background technique At present, with the development of electronic technology, electromagnetic wave pollution in daily life is increasing day by day. On the other hand, since radar has become a common detection technology, research on radar stealth technology has also attracted the attention of various countries. Regardless of military or civilian use, the requirements for electromagnetic wave absorbing materials are more urgent. The basic requirements of electromagnetic wave absorbing materials are "thin, light, wide, and strong", that is, the coating of the absorbing material should be thin, the den...

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Problems solved by technology

Yang et al. (Yang, L.; Huan, H.; Liu, H.B.; etal. Transactions of Nonferrous Metals Society of China 2007, 17, S708-S712.) prepared graphite intercalation compounds FeCl3-NiCl2-GICs by molten salt method, and then heated and reduced 24 in hydrogen Hours, the obtained FeNi-loaded graphite material has improved low-frequency absorption of graphite, but the strength is not high, and the process is too cumbersome

Hong-Bo et al. [Hong-Bo, L.; Yan-hong, Z.; Li, Y.; Zong-Zhang, C. Journal of Magnetism and Magnetic Materials 2006, 302, (2), 343-347.] mixed ferric nitrate solution with graphite Heating to dryness, and then heating and decomposing under sealed conditions, depositing iron element on the surface of graphite, the low frequency absorption of this material has been improved, but the single metal particle load makes the improvement of absorption performance limited

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