▎ 摘　　要

NOVELTY - A high thermal conductivity polyurethane foaming composition comprises 3-5 pts. wt. graphene, 60-70 pts. wt. polyurethane polyol, 30-40 pts. wt. starch, 1-3 pts. wt. high thermal conductivity compound, 1-8 pts. wt. water, 12-23 pts. wt. isocyanate, 1-2 pts. wt. catalyst, 2-6 pts. wt. chain extender, 1-2 pts. wt. stabilizer, 2-5 pts. wt. calcium carbonate and 1-5 pts. wt. stearic acid. USE - High thermal conductivity polyurethane foaming composition. ADVANTAGE - The polyurethane foaming composition is prepared by a simple and efficient process. The high thermal conductivity compound and the graphene realize coordinated thermal conductivity. The polyurethane foam composition has excellent thermal conductivity, stable structure and high mechanical strength. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of the high thermal conductivity polyurethane foaming composition, which involves (1) adding 60-70 pts. wt. polyester polyol, 30-40 pts. wt. starch and 1-8 pts. wt. water into reactor, mixing, adding 12-23 pts. wt. isocyanate to reactor, heating to 90-100 degrees C for 2-3 hours under the protection of nitrogen, (2) adding nano aluminum carbide, nano silicon carbide, nano silicon oxide, nano iron carbide, magnesium oxide, nickel oxide and aluminum nitride, mixing, heating to 70-80 degrees C for 0.5-1 hour, (3) adding 1-3 pts. wt. high thermal conductivity compound and 2-5 pts. wt. calcium carbonate into the reactor, heating to 90-100 degrees C for 1-1.5 hours under the protection of nitrogen, (4) adding 1-5 pts. wt. stearic acid and 3-5 pts. wt. graphene into the reactor, heating to 60-70 degrees C for 1-1.5 hours under the protection of nitrogen, (5) cooling the reactor to 50-60 degrees C, adding 1-2 pts. wt. catalyst and 2-6 pts. wt. chain extender, warming for 2-4 hours, (6) adding 1-2 pts. wt. stabilizer to the reactor, stirring, and curing at 120 degrees C for 20-30 minutes.