▎ 摘　　要

NOVELTY - Preparing high-density conductive polyurethane foam, comprises (i) adding 15-35 pts. wt. ionic liquid 1,3-dimethylimidazole dimethyl phosphate salt and 5-10 pts. wt. water into reactor, mixing, heating at 45-52 degrees C, then adding 25-50 pts. wt. graphene and mixing uniformly, cooling the reactor to 35-40 degrees C, and adding 70-110 pts. wt. polyether polyol and 6-10 pt. wt. chain extender, and mixing uniformly, cooling the reactor to room temperature, then adding 0.5-1 pt. wt. catalyst and 1-4 pt. wt. foam stabilizer to the reactor, and mixing uniformly to obtain material A, (ii) taking 150 pts. wt. diphenylmethane diisocyanate as material B, and adding to ice-water bath, then cooling the material B to 1-3 degrees C and adding step (i) material A to the ice-water bath, and the stirring the material A and material B uniformly to obtain prepolymer, and (iii) adding the step (ii) prepolymer to ultrasonic and microwave cooperative extraction equipment for reaction to obtain final product. USE - The high-density conductive polyurethane foam is useful in adhesive tape (claimed). ADVANTAGE - The polyurethane foam has high density and high conductivity. DETAILED DESCRIPTION - Preparing high-density conductive polyurethane foam, comprises (i) adding 15-35 pts. wt. ionic liquid 1,3-dimethylimidazole dimethyl phosphate salt and 5-10 pts. wt. water into reactor, mixing, heating at 45-52 degrees C, then adding 25-50 pts. wt. graphene and mixing uniformly, cooling the reactor to 35-40 degrees C, and adding 70-110 pts. wt. polyether polyol and 6-10 pt. wt. chain extender, and mixing uniformly, cooling the reactor to room temperature, then adding 0.5-1 pt. wt. catalyst and 1-4 pt. wt. foam stabilizer to the reactor, and mixing uniformly to obtain material A, where the mass ratio between 1,3-dimethylimidazole dimethyl phosphate salt and graphene is 1:1.2-2, (ii) taking 150 pts. wt. diphenylmethane diisocyanate as material B, and adding to ice-water bath, where the temperature of the ice-water bath is 1-3 degrees C, then cooling the material B to 1-3 degrees C and adding step (i) material A to the ice-water bath, and the stirring the material A and material B uniformly to obtain prepolymer, where the stirring speed is 1200-1600 revolutions/minute, and (iii) adding the step (ii) prepolymer to ultrasonic and microwave cooperative extraction equipment for reaction to obtain final product, where the ultrasonic microwave reaction time is 10-16 minutes, ultrasonic microwave reaction temperature is 35-45 degrees C, and ultrasonic output power is 150-170 W. INDEPENDENT CLAIMS are also included for: (1) high-density conductive polyurethane foam, obtained by above mentioned method; and (2) adhesive tape, comprising a substrate layer, a adhesive layer and a release film provided on the surface of the substrate layer, the adhesive layer being sandwiched between the substrate layer and the release film, where the substrate layer is high-density conductive polyurethane foam.