▎ 摘　　要

NOVELTY - Polyurethane-ferrite composite wave-absorbing flame retardant material, comprises 100 pts. wt. polyether polyol, 20-70 pts. wt. toluene diisocyanate, 0.2-1 pts. wt. nano white carbon black, 10-20 pts. wt. de-ionized water, 5-20 pts. wt. dichlophos methyl, 2-8 pts. wt. graphene oxide, 10-30 pts. wt. ferrite, 1-5 pts. wt. silicon carbide, 2-8 pts. wt. zinc borate, 0.02-0.4 pts. wt. stannous octoate, 0.03-0.6 pts. wt. triethylene diamine, 0.2-3 pts. wt. silicone surfactants and 1-10 pts. wt. sodium bicarbonate. USE - Used as polyurethane-ferrite composite wave-absorbing flame retardant material. DETAILED DESCRIPTION - Polyurethane-ferrite composite wave-absorbing flame retardant material, comprises 100 pts. wt. polyether polyol, 20-70 pts. wt. toluene diisocyanate, 0.2-1 pts. wt. nano white carbon black, 10-20 pts. wt. de-ionized water, 5-20 pts. wt. dichlophos methyl, 2-8 pts. wt. graphene oxide, 10-30 pts. wt. ferrite, 1-5 pts. wt. silicon carbide, 2-8 pts. wt. zinc borate, 0.02-0.4 pts. wt. stannous octoate, 0.03-0.6 pts. wt. triethylene diamine, 0.2-3 pts. wt. silicone surfactants and 1-10 pts. wt. sodium bicarbonate, where polyether polyol has a hydroxy value of 30-60 mg KOH/g and the isocyanate index of toluene diisocyanate is 0.60-1.15. An INDEPENDENT CLAIM is also included for preparing Polyurethane-ferrite composite wave-absorbing flame retardant material, comprising mixing the above raw materials except toluene diisocyanate, graphene oxide and sodium bicarbonate, stirring at room temperature, dispersing by ultrasonic treatment to obtain primary mixture, foaming the reaction mixture, adding toluene diisocyanate and ultrasonic stirring for 5-10 minutes, adding graphene oxide and sodium bicarbonate, quickly pouring into mold for foaming at room temperature for 30-90 minutes to obtain absorbing material gel and freeze drying.