Graphene-Coated Honeycomb for Broadband Lightweight Absorbers
The development of lightweight microwave absorber, operating in a wide range of frequencies, is still a challenging task. A novel broadband lightweight radar absorbing material is developed using a phenolic aramid honeycomb (HC) coated with a graphene-filled polymeric paint, which is made of a colloidal suspension of graphene nanoplatelets (GNPs) dispersed in a mixture of polyvinyl-alcohol, water, and 1-propanol.