In this study,a series of carbon fiber papers with different conductivity were prepared by milling pretreatment and wet-forming from carbon fiber and hardwood pulp fiber.And then,these papers were laminated with epoxy film to obtain composite carbon fiber paper(MCFP)with gradient structure.The electromagnetic shielding performance,mechanical properties,and conductivity of MCFP were inves-tigated.The results showed that the gradient and multilayer structure could significantly diminish incident electromagnetic wave reflection while enhancing the absorption of internal reflections.Consequently,the MCFP demonstrated superior electromagnetic shielding with low reflectance characteristics.The total shielding efficiency of MCFP reached 45 dB,and the absorption coefficient was up to 0.67 under optimized conditions.At the same time,the carbon fiber endowed the MCFP with excellent electro-thermal performance,and the surface temperature could reach 147 ℃ with a supplied voltage of 6 V.
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