▎ 摘　　要

NOVELTY - High thermal conductivity ground heating pipe material, comprises 45 pts. wt. polyethylene, 40 pts. wt. polybutene, 9 pts. wt. aluminum oxide, 1.5 pts. wt. graphene, 2.8 pts. wt. epoxy oil, 1.3 pts. wt. stearic acid, 0.15 pts. wt. pentaerythritol 3-(3',5'di-tert-butyl-4'-hydroxypropyl) propionate ester, and 0.25 pts. wt. tris(2,4-di-tert-butylphenyl) phosphite. The high thermal conductivity floor heating pipe material has a high-efficiency heat conduction network, and the high-efficiency heat conduction network is formed on the polyethylene/polybutene two-phase interface by graphene and aluminum oxide heat conduction chains connected by chemical bonds, and runs through the entire material system. USE - High thermal conductivity ground heating pipe material. ADVANTAGE - The high heat-conducting ground heating pipe material has good heat conducting performance, can improve the heating effect, at the same time has high tensile strength, Young's modulus and impact strength, and mechanical property satisfy to GB/T28799.2-2012cold water heat-resistant polyethylene pipeline system 2 part of the pipe. DETAILED DESCRIPTION - High thermal conductivity ground heating pipe material, comprises 45 pts. wt. polyethylene, 40 pts. wt. polybutene, 9 pts. wt. aluminum oxide, 1.5 pts. wt. graphene, 2.8 pts. wt. epoxy oil, 1.3 pts. wt. stearic acid, 0.15 pts. wt. pentaerythritol 3-(3',5'di-tert-butyl-4'-hydroxypropyl) propionate ester, and 0.25 pts. wt. tris(2,4-di-tert-butylphenyl) phosphite. The high thermal conductivity floor heating pipe material has a high-efficiency heat conduction network, and the high-efficiency heat conduction network is formed on the polyethylene/polybutene two-phase interface by graphene and aluminum oxide heat conduction chains connected by chemical bonds, and runs through the entire material system. The preparation method of the high thermal conductivity ground heating pipe material comprises (a) adding polyethylene, graphene, epoxy oil, stearic acid, pentaerythritol 3-(3',5'di-tert-butyl-4'-hydroxypropyl) propionate, and tris (2,4-di-tert-butylphenyl) phosphite into the high-speed mixer, and mixing at high speed for 3 minutes; (b) adding twin-screw extruder and carrying out extruding granulation to obtain polyethylene/graphene masterbatch, where the process parameters of the twin-screw extruder are the speed is 50-150 revolutions/minute, the temperature settings of each working section are 170±20℃, 180±20℃, 190±20℃, 190±20℃, 190±20℃, and the head temperature is 190±20℃; (c) adding polybutene, aluminum oxide, epoxy oil, stearic acid, pentaerythritol 3-(3',5'di-tert-butyl-4'-hydroxypropyl) propionate ester, tris (2,4-di-tert-butylphenyl) phosphite into the high-speed mixer, and mixing at high speed for 3 minutes; (d) adding twin-screw extruder and carrying out extruding granulation to obtain polybutene/aluminum oxide master batch, where the process parameters of the twin-screw extruder are the speed is 50-150 revolutions/minute, the temperature settings of each working section are 170±20℃, 180±20℃, 190±20℃, 190±20℃, 190±20℃, and the head temperature is 190±20℃; and (e) adding polyethylene/graphene masterbatch and polybutene/aluminum oxide masterbatch into twin-screw extruder to extrude and granulate to obtain floor heating pipe material with high thermal conductivity, where the process parameters of the twin-screw extruder are the rotation speed is 50-150 revolutions/minute, and the temperature settings of each working section are 170±20℃, 180±20℃, 200±20℃, 200±20℃, 200±20℃, and head temperature is 200±20℃. An INDEPENDENT CLAIM is also included for preparation method of the high thermal conductivity ground heating pipe material as mentioned above.