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Transparent Wood Fiber-Reinforced Epoxy-Resin Electromagnetic-Shielding Materials with Superior Mechanical Strength
Jingshu Gao1, Zhen Wu1, Ling Zhu2
1College of Art and Design, Nanjing Forestry University, Nanjing 210037, China.
Abstract:
The development of electromagnetic-shielding materials that not only meet the requirements of electromagnetic shielding but also possess transparency and additional functionalities is a new trend in the field. In this study, delignified wood fibers were used as the base material, which were impregnated in epoxy resin and then reinforced with three types of electromagnetic-shielding fillers: chopped carbon fibers, silicon carbide particles, and nano-silica. The experimental results showed that the resulting wood fiber-reinforced epoxy-resin electromagnetic-shielding transparent material not only exhibited excellent mechanical strength and thermal insulation properties but also achieved high haze and effective electromagnetic-shielding efficiency (greater than 90%) while maintaining a transmittance of approximately 50%. Based on the orthogonal experimental results, the optimal performance of the wood fiber-reinforced epoxy-resin electromagnetic-shielding transparent material was obtained when chopped carbon fibers were used as the electromagnetic-shielding filler component, with an electromagnetic-shielding filler mass fraction of 0.3 wt% and a wood fiber mass fraction of 5.0 wt%.
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