▎ 摘　　要

NOVELTY - A graphene composite wave absorbing material based on 5G communication is prepared by preheating carbonyl iron powder under argon protection, mixing with graphene oxide, calcium stearate and anhydrous ethanol according to dosage ratio of 5 g:0.1 g:0.01-0.1 g:40-50 mL, ball milling for 1-3 hours, and drying. USE - Method for preparing graphene composite wave absorbing material based on 5G communication used as absorbent for full-band 5G mobile communication electromagnetic wave signal absorption (claimed). ADVANTAGE - The product has excellent impedance matching performance. The method ball milling time and calcium stearate content of can be adjusted to change the position of the absorption peak of the graphene composite absorbing material, so as to selectively absorb interference noise in any two frequency bands of the future 5G.