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Multifunctional waterproof MXene-coated wood with high electromagnetic shielding performance

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Abstract

Increasing electromagnetic pollution calls for electromagnetic interference (EMI) shielding materials, especially sustainable, lightweight, and environmentally stable, biomass-based materials. MXene-coated wood (M/wood) is prepared by simply spraying MXene sheets on the wood surface. Varying this spray coating manipulates the shielding performance and its application to different wood species. The M/wood exhibits high electrical conductivity (sheet resistance is only 0.65 Ω/sq) with an excellent EMI shielding effectiveness of 31.1 dB at 8.2 ~ 12.4 GHz and is also fire retardant. Furthermore, waterborne acrylic resin (WA) is coated on M/wood to enhance environmental stability. The WA coating improves EMI shielding performance stability after water-soaking and drying testing and prevents the peeling of MXene from wood. These satisfactory properties of WA-M/wood and the facile manufacturing approach promote the feasibility of wood-based EMI shielding materials.

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Acknowledgments

This research was supported by the Science and Technology Program of Guangzhou (Project No. 202103000011) and the Forestry Administration of Guangdong Province (Project No. 2020KJCX008).

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The authors have not disclosed any funding.

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Contributions

YW: Investigation, Visualization, Writing—original draft. ZD: Investigation, Data curation. YZ: Resources, Visualization. WZ: Formal analysis. JG: Software. CH: Methodology, Project administration. XL: Conceptualization, Supervision, Validation, Writing—review and editing.

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Correspondence to Chuanshuang Hu or Xiuyi Lin.

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Wei, Y., Dai, Z., Zhang, Y. et al. Multifunctional waterproof MXene-coated wood with high electromagnetic shielding performance. Cellulose 29, 5883–5893 (2022). https://doi.org/10.1007/s10570-022-04609-3

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  • DOI: https://doi.org/10.1007/s10570-022-04609-3

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