▎ 摘　　要

NOVELTY - High-strength temperature medium conveying pipeline comprises rigid reinforcement layer, PERT resistance modified foam layer, anisotropic plane high thermal conductivity graphene layer and an inner core pipe in turn from the outside to the inside, the formulation of the PERT modified foam layer includes100 pts. wt. matrix resin A, 1-3 pts. wt. foaming agent, 5-10 pts. wt. reinforcement A, 1-3 pts. wt. antioxidant A, 1-3 pts. wt. dispersant A, and 2-3 pts. wt. coupling agent A, the base resin A is PERT resin, reinforcement A is potassium hexatitanate whiskers and/or aluminum borate whiskers, and the anisotropic plane high thermal conductivity graphene layer is made of graphene film high thermal conductivity layer, the material is wound, and the in-plane thermal conductivity of the graphene film high thermal conductivity layer material is more than 400 W/mK, and the vertical thermal conductivity is 15-40 W/mK. USE - Used as high-strength temperature medium conveying pipeline. ADVANTAGE - The pipeline: has better thermal insulation effect and high compressive strength. DETAILED DESCRIPTION - AN INDEPENDENT CLAIM is also for INDEPENDENT CLAIM is also included for preparing high-strength temperature medium conveying pipeline, comprising (i) melting and extruding the polyethylene or PERT inner layer pipe material using a single screw extruder, the temperature of the barrel area is 180-200℃, and the temperature of the die area is 190-200℃, and then the vacuum sizing and cooling, (ii) extruding a layer of hot melt adhesive on the outer surface of the inner layer, and the extrusion temperature of the hot melt adhesive is 135-150℃, and then winding two layers of intersecting graphene films and two layers of graphene films, coating the hot-melt adhesive between them, and finally coating the layer of hot-melt adhesive on the outer layer of the outermost graphene film, (iii) mixing the raw material of the PERT modified foaming layer, extruding and coating the outer side of the middle high heat conducting layer by a coating machine; the extruding temperature of the coating machine is 185-195℃ mixing the formula raw materials of the PERT modified foam layer evenly, it is extruded and coated on the outside of the middle high thermal conductivity layer through a coating machine. The extrusion temperature of the coating machine is 185 -195℃, (iv) mixing the formula raw materials of the modified rigid PERT pipe evenly, extruding and coating a layer of modified rigidity PERT base material outside the PERT modified foaming layer by coating machine, the extruding temperature is 180-190℃, and (v) shaping, cutting, and off-line of the finished product. In step (ii) the graphene film along the inner longitudinal winding angle is 5-45°, and the winding tension is 5-15 N.