Self-repairing material for mechanical devices, and preparation method thereof

Abstract

The invention discloses a self-repairing material for mechanical devices, and a preparation method thereof. The material comprises ultrafine particles, a hyperdispersant and lubricating oil, the hyperdispersant is 1-8% of the mass of the ultrafine particles, a ratio of the total mass of the ultrafine particles and the hyperdispersant to the mass of the lubricating oil is (3-50):1, and the ultrafine particles comprise, by weight, 1-8 parts of asbestos fibers, 10-30 parts of polyphenol, 1-12 parts of potter's clay, 5-25 parts of metallic silver, 0.2-8 parts of stearic acid, 5-20 parts of carbon black, 5-40 parts of an ethylene-acrylic acid copolymer, 3-25 parts of aluminum, 15-40 parts of nanometer silver, 15-50 parts of low density polyethylene, 3-30 parts of chitin, 1-12 parts of guar gum and 3-15 parts of molybdenum. A metalloid ceramic layer is formed on the surface of a metal friction pair by the effect of friction energy, so heat caused by friction is reduced, the service life is prolonged, non-dismantling repairing in the running process of the mechanical devices is possible, and the self-repairing material has wide application prospect in the mechanical devices.

Description

technical field [0001] The invention relates to the field of mechanical technology, in particular to a self-repairing material for mechanical equipment and a preparation method thereof. Background technique [0002] There are many kinds of mechanical equipment. When the mechanical equipment is running, some of its parts and even itself can perform different forms of mechanical movement. Mechanical equipment consists of driving device, transmission device, transmission device, working device, braking device, protection device, lubrication system, cooling system and other parts. Wear is one of the three main forms of mechanical material failure. The repair material enters the surface of the metal friction pair through the lubricating medium as a carrier, and forms a cermet-like layer on the surface of the metal friction pair through the action of friction energy. During the preparation and use of nanomaterials, the surface activity of ultrafine particles increases as the par...

AI Technical Summary

Problems solved by technology

During the preparation and use of nanomaterials, the surface activity of ultrafine particles increases as the particle size decreases, and they are prone to agglomeration and precipitation in lubricating media, which greatly affects the use effect of self-repairing materials.