▎ 摘　　要

NOVELTY - Radar absorbing and explosion-proof polyurea material comprises component A and component B. The component A is a prepolymer synthesized by reacting 60 pts. wt. diisocyanate and 40-55 pts. wt. polyol. The -NCO content is 15-20%. The solid content is 99%. The B component comprises 25-70 pts. wt. polyol, 20-50 pts. wt. amino terminal chain extender, 0.5-1.5 pts. wt. silane coupling agent, 3-6 pts. wt. nano ferrite, 5-10 pts. wt. nickel-coated graphene, and 4-8 pts. wt. additives. The volume ratio of the A component and the B component in a ratio of 1:1. The spraying equipment is used to spray the radar absorbing and explosion-proof polyurea material. USE - Radar absorbing and explosion-proof polyurea material used as radar absorbing material. ADVANTAGE - The radar absorbing and explosion-proof polyurea material has a relative permeability and a relative permittivity that can reach impedance values that match the free space, and at the same time has excellent explosion-proof performance and mechanical properties, high solid content, and large adhesion. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing radar absorbing and explosion-proof polyurea material, which involves: (A) preparing raw materials according to the formula; (B) adding diisocyanate and polyol to a four-necked flask at 50-60 degrees C; (C) preparing raw materials according to the formula by adding polyol, amino-terminated chain extender, silane coupling agent, nano-ferrite, nickel-coated graphene, and additives to the dispersion container in sequence under stirring; and (D) spraying the prepared component A and component B with a spraying equipment according to a volume ratio of 1:1 to prepare the radar absorbing and explosion-proof polyurea material.