▎ 摘　　要

NOVELTY - Preparation of three-dimensional graphene-based microwave absorbing metamaterial substrate, involves adding three-dimensional graphene, curing agents and additives to raw rubber, mixing well in mixer to obtain mixture (I), placing mixture (I) in hot-press molding machine, and drying obtained product. USE - Preparation of three-dimensional graphene-based microwave absorbing metamaterial substrate used as potential material for stealth weaponry applications. ADVANTAGE - The method enables preparation of three-dimensional graphene-based microwave absorbing metamaterial substrate with high absorption efficiency. The use of three-dimensional graphene regulates electromagnetic parameters of microwave absorbing metamaterial substrate. The three-dimensional graphene controls absorption bands frequency range in metamaterial substrate. The three-dimensional graphene-based microwave absorbing metamaterial substrate effectively achieves excellent dispersion of three-dimensional graphene powder in raw rubber.