▎ 摘　　要

NOVELTY - Preparing weather-resistant polyethylene (PE) modified material involves weighing 1-99% high density polyethylene (HDPE), 1-10% propylene glycol butyl ether, 1-70% anti-wear agent, 0.1-20% matting agent, 0-10% lubricant, 1-20% antistatic agent, 1-15% hexamethylenetetramine, 0.01-10% heat stabilizer, 0.01-10% ultraviloet (UV) stabilizer, where UV stabilizer is mixture of sodium acetate, chlorinated polyethylene and methyl hydroxybenzoate; anti-wear agent is mixture of hydroxy silicone oil, nano zinc oxide, titanium nitride powder and graphene oxide; mixing HDPE, anti-wear agent and heat stabilizer according to formula ratio into reaction device, stirring thoroughly at 100-120 degrees C, adding propylene glycol butyl ether, continuing to stir and react for 2-3 hours, and drying after reaction to obtain material mixture A; mixing matting agent, antistatic agent, hexamethylenetetramine and UV stabilizer according to formula ratio, stirring mixture at 60-80 degrees C for 1-2 hours. USE - Process for preparing weather-resistant PE modified material used in co-extrusion device for molding of co-extruded profile (all claimed). ADVANTAGE - The process enables to realizes reduction of water absorption rate of profile through PE modified material; achieves purpose of improving aging and anti-pollution, where profile is compatible with high precision, high strength of metal profile, and has wear resistance, corrosion resistance, and antistatic, provides environmental protection and improves quality of product. DETAILED DESCRIPTION - Preparing weather-resistant polyethylene (PE) modified material involves weighing 1-99% high density polyethylene (HDPE), 1-10% propylene glycol butyl ether, 1-70% anti-wear agent, 0.1-20% matting agent, 0-10% lubricant, 1-20% antistatic agent, 1-15% hexamethylenetetramine, 0.01-10% heat stabilizer, 0.01-10% ultraviloet (UV) stabilizer, where UV stabilizer is mixture of sodium acetate, chlorinated polyethylene and methyl hydroxybenzoate; anti-wear agent is mixture of hydroxy silicone oil, nano zinc oxide, titanium nitride powder and graphene oxide; mixing HDPE, anti-wear agent and heat stabilizer according to formula ratio into reaction device, stirring thoroughly at 100-120 degrees C, adding propylene glycol butyl ether, continuing to stir and react for 2-3 hours, and drying after reaction to obtain material mixture A; mixing matting agent, antistatic agent, hexamethylenetetramine and UV stabilizer according to formula ratio, stirring mixture at 60-80 degrees C for 1-2 hours, drying, standing and cooling to obtain material mixture B'; placing mixture A and mixture B' in blender for high-speed stirring, setting blender to bake material at 150-180 degrees C, mixing for 2-3 hours, and cooling to 40 degrees C; adding obtained raw materials to granulator for heating, kneading and bonding, where length-to-diameter ratio of granulator is 33:52, granulation temperature is 180-250 degrees C, and screw speed is 300-500 rotation/minute, and PE modified pellets are prepared by water pelletizing. INDEPENDENT CLAIMS are included for the following: (1) a co-extruded profile, which comprises metal layer, adhesive layer, and modified material layer sequentially covering metal layer from inside to outside; and (2) a profile co-extrusion device for extrusion molding of co-extruded profile, which comprises co-extrusion mold, conveyor for conveying metal layer into co-extrusion mold, and two are respectively arranged in co-extrusion mold, co-extrusion machine connected to co-extrusion die on both sides, where exit of co-extrusion mold, which is sequentially connected with wood-grain pressing roller device, and shaping cool mold. DESCRIPTION OF DRAWING(S) - The drawing shows a flowchart of process for preparing weather-resistant PE modified material. (Drawing includes non-English language text).