▎ 摘　　要

NOVELTY - Ultrahigh molecular weight polyethylene catalyst comprises titanium-containing catalyst main component and aluminum alkyl. The titanium-containing catalyst main component is a spherical graphene oxide-supported titanium-containing compound having a particle size of 8-80 micrometer. The spherical graphene oxide is prepared by preparing graphene oxide aqueous phase slurry, the concentration of graphene oxide is 8-15 mg/mL. The surfactant is added after the slurry is sonicated for 30-60 minutes, and the mixture is stirred at 3000-5000 revolution per minute for 10-40 minutes. The surfactant is a mixture of a sorbitan oleate compound and a 6-16C sulfonate compound, and the amount of the surfactant is 0.5-5% of the total mass of the graphene oxide slurry. The N,N-dialkyl-p-phenylenediamine derivative (I) is reacted at 80-120 degrees C for 1-3 hours, and then washed and dried to obtain spherical graphene oxide. USE - Ultrahigh molecular weight polyethylene catalyst used in biomedicine, electronics, chemical machine and other high-tech field and food processing, and textile machinery industry. ADVANTAGE - The ultrahigh molecular weight polyethylene catalyst has excellent chemical resistance and excellent noise resistant property and has low friction coefficient. DETAILED DESCRIPTION - Ultrahigh molecular weight polyethylene catalyst comprises titanium-containing catalyst main component and aluminum alkyl. The titanium-containing catalyst main component is a spherical graphene oxide-supported titanium-containing compound having a particle size of 8-80 micrometer. The spherical graphene oxide is prepared by preparing graphene oxide aqueous phase slurry, the concentration of graphene oxide is 8-15 mg/mL. The surfactant is added after the slurry is sonicated for 30-60 minutes, and the mixture is stirred at 3000-5000 revolution per minute for 10-40 minutes. The surfactant is a mixture of a sorbitan oleate compound and a 6-16C sulfonate compound, and the amount of the surfactant is 0.5-5% of the total mass of the graphene oxide slurry. The N,N-dialkyl-p-phenylenediamine derivative (I) is reacted at 80-120 degrees C for 1-3 hours, and then washed and dried to obtain spherical graphene oxide. The mass ratio of the N,N-dialkyl-p-phenylenediamine derivative to graphene oxide is 0.1-0.6:1. R1 and R2=same or different and are 1- 10C alkyl group; and R3, R4, R5, and R6=same or different and are H or a 1-5C alkyl group. . An INDEPENDENT CLAIM is included for a preparing ultrahigh molecular weight polyethylene catalyst, which involves: (A) mixing and dispersing a spherical graphene oxide catalyst carrier with an organic solvent; adding a titanium-containing compound at -40 to 30 degrees C, and reacting at -30 to 30 degrees C for 0.5-5 hours; and (B) heating to 30-100 degrees C, the reaction for 1-5 hours, washing, drying to obtain a catalyst, where molar ratio of the titanium-containing compound to the carrier is 2-80:1, and organic solvent is selected from a mixed solvent of one or more of tetrahydrofuran, dichloromethane, trichloroethane, hexane, toluene, n-pentane, xylene, heptane, octane, decane, and decane.