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<p>Electrothermal materials have made great progress in the field of de-icing, but problems such as low performance, cumbersome preparation methods, and the use of harmful substances have seriously limited their application and development. Here, a graphene nanoplatelet (GNP)/multi-walled carbon nanotube (MWCNT) composite aqueous conductive paste was prepared by simple physical stirring, and the wood was immersed in it in vacuum to obtain a wood composite electrothermal material with excellent electrothermal performance and electromagnetic shielding performance. The water-based conductive paste, water-based epoxy resin and wood used in this paper are all green and environmentally friendly materials, and distilled water is used as the dispersion medium. When the aqueous GNP paste and the aqueous MWCNT paste are mixed, it has the lowest surface resistance (7.2 Ω). Under the applied voltage of 5&#xa0;V, the average surface temperature can rise to 146&#xa0;°C within 180&#xa0;s, and the de-icing test can be completed within 210&#xa0;s. When the thickness is 5&#xa0;mm, the electromagnetic shielding effectiveness reaches 35.03&#xa0;dB, and it reaches 64.69&#xa0;dB after increasing the film thickness of 200 microns. The good electrothermal effect and electromagnetic shielding effectiveness make the wood composite well applied to wood products de-icing and electromagnetic absorption.</p>

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Graphene/multi-wall-carbon-nanotube/wood composite with joule thermal de-icing and electromagnetic shielding properties

  • 期刊论文

  • 发表日期：

    2025年9月6日

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  • Dong Xing,
  • Kanglong Yang,
  • Wanjin Wang

摘要

Electrothermal materials have made great progress in the field of de-icing, but problems such as low performance, cumbersome preparation methods, and the use of harmful substances have seriously limited their application and development. Here, a graphene nanoplatelet (GNP)/multi-walled carbon nanotube (MWCNT) composite aqueous conductive paste was prepared by simple physical stirring, and the wood was immersed in it in vacuum to obtain a wood composite electrothermal material with excellent electrothermal performance and electromagnetic shielding performance. The water-based conductive paste, water-based epoxy resin and wood used in this paper are all green and environmentally friendly materials, and distilled water is used as the dispersion medium. When the aqueous GNP paste and the aqueous MWCNT paste are mixed, it has the lowest surface resistance (7.2 Ω). Under the applied voltage of 5 V, the average surface temperature can rise to 146 °C within 180 s, and the de-icing test can be completed within 210 s. When the thickness is 5 mm, the electromagnetic shielding effectiveness reaches 35.03 dB, and it reaches 64.69 dB after increasing the film thickness of 200 microns. The good electrothermal effect and electromagnetic shielding effectiveness make the wood composite well applied to wood products de-icing and electromagnetic absorption.