Preparation method of wear-resisting composite material

The invention discloses a preparation method of a wear-resisting composite material, and relates to the technical field of materials in the aspects of a centering device of a sucker rod for an oil well. The preparation method is characterized in that the wear-resisting material is formed by combining the following raw materials by weight percent: 55%-65% of matrix resin, 20%-30% of carbon fiber and 4%-15% of graphite, wherein the matrix resin is formed by mixing polyphenylene sulfide and polyamide-imide according to a mass ratio being 40:60. According to the preparation method, the used materials are a mixture of PPS (Polyphenylene Sulfide) and PAI (Polyamide-Imide), as the carbon fiber and the graphite are added, the impact performance and the tensile performance are improved, the frictional wear performance is excellent, the problems that the conventional centering device made of nylon and the like can not resist high temperature and is easy to deform due to high temperature can be solved, and the service life of the composite material is prolonged greatly. The wear-resisting composite material is convenient in processing, can be in injection molding and is stable in size.