Electric Heating Wood Composite Based on Graphite Three-dimensional Conductive Network

LU Jing; LI Fuduo; ZHONG Jinyao; YUN Hong

doi:10.19554/j.cnki.1001-3563.2026.11.002

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Packaging Engineering ›› 2026, Vol. 47 ›› Issue (11) : 9-15. DOI: 10.19554/j.cnki.1001-3563.2026.11.002

Special Topic on Functional Biomass Materials

Electric Heating Wood Composite Based on Graphite Three-dimensional Conductive Network

LU Jing^1,2, LI Fuduo¹, ZHONG Jinyao¹, YUN Hong^1*

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Abstract

The work aims to develop a low-cost and high-performance wood-based electric heating composite, which exhibits excellent heating performance under low-voltage electric fields as well as superior mechanical properties. With poplar veneer as the substrate, graphite was blended into urea-formaldehyde resin as the conductive heating component, and expanded graphite (EG) was introduced to construct a three-dimensional network, followed by hot pressing to prepare the electric heating wood composite. Graphite and EG formed a three-dimensional network structure, which reduced the "percolation threshold" of the material. At a low voltage of 12 V, the maximum heat flux density of the composite reached 391 W/m², and its saturation temperature rose to 50 ℃. Its thermal conductivity was increased by approximately 112% compared with ordinary wood-based panels, while the composite maintained favorable mechanical properties. The graphite-based electric heating wood composite features high heating efficiency and good thermal insulation, showing great application potential in temperature-controlled packaging materials, construction, home furnishing and other fields.

Key words

graphite / electric heating / wood composite

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LU Jing, LI Fuduo, ZHONG Jinyao, YUN Hong. Electric Heating Wood Composite Based on Graphite Three-dimensional Conductive Network[J]. Packaging Engineering. 2026, 47(11): 9-15 https://doi.org/10.19554/j.cnki.1001-3563.2026.11.002

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