▎ 摘 要
NOVELTY - A solid composite lubricant preparing method involves mixing graphene oxide with sodium hyaluronate to obtain mixture solution to concentration of 20-50 g/ml, followed by subjecting the mixture solution to ultrasonic dispersion at 15-60 degrees C for 0.5-2 hours. USE - Method for preparing solid composite lubricant. ADVANTAGE - The method enables preparing solid composite lubricant with effect of reducing pain and knee symptoms. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a solid composite lubricant prepared by the method.