Solid lubricating composite material and manufacturing method thereof

Abstract

The invention discloses a solid lubricating composite material and a manufacturing method thereof. Raw materials for the solid lubricating composite material comprise carbon nano tube, boron oxide and polytetrafluoroethylene. The manufacturing method comprises the following steps: grinding the carbon nano tube in a ball mill to form sectional structures, adding ethanol and surface dispersant into the carbon nano substances of the sectional structures, and treating the mixture by ultrasonic wave to obtain carbon nano liquid; taking boron oxide powder, polytetrafluoroethylene powder and the carbon nano liquid in percentage by weight, and mixing the three substances and stirring the mixture at a high speed to disperse the carbon nano liquid into the boron oxide and polytetrafluoroethylene powder so as to obtain a mixture; and die-pressing and molding the mixture, and demoulding the mixture to obtain the finished product solid lubricating composite material. The solid lubricating composite material prepared from the combination of the carbon nano tube and the polytetrafluoroethylene with self-lubricating property greatly improves the technical indexes such as low friction coefficient, self-lubricating property, abrasion resistance and the like, can conduct heat and electricity and eliminate static electricity produced by friction, and can be continuously produced in batch with lower cost.

Description

Technical field

[0001] The invention relates to a solid lubricating composite material, in particular to a solid lubricating composite material containing carbon nanotube raw materials used in the fields of metallurgy, mining, sports, mechanical equipment and the like, and a manufacturing method. Background technique

[0002] At present, the solid lubricants widely used in engineering, such as graphite, molybdenum disulfide, and polytetrafluoroethylene, have high solid lubricating friction coefficient and unsatisfactory lubricating performance.

[0003] Carbon nanotubes can be regarded as seamless nanotubes formed by single-layer or multi-layer graphite sheets curled around the central axis at a certain helix angle. It has a seamless hollow tubular structure and its tube body is composed of hexagonal carbon atoms. The two ends are usually regarded as two hemispherical large fullerene molecules. The diameter of single-walled carbon nanotubes is relatively small, generally a few nan...