Metal and plastic composite self-lubricating material and preparation method thereof

Abstract

The invention discloses a metal and plastic composite self-lubricating material and a preparation method thereof. The metal and plastic composite self-lubricating material comprises a metal layer, a plastic binding layer and a plastic working layer, wherein the plastic binding layer binds the metal layer and the plastic working layer together through a chemical bond of a molecule; one part of theplastic working layer is embedded in a drop pit of the metal layer; the plastic working layer includes the material components according to the mass percent as follows: 60-90 of polyether-ether-ketone, 5-20 of polyfluortetraethylene, 7 of graphite, 1 of MoS2 and 5-10 of aluminium oxide; and the plastic binding layer includes the material components according to the mass percent as follows: 70-90 of polyether-ether-ketone, 5-20 of polyphenyl thioether and 5-10 of aluminium oxide. By adding the plastic binding layer between the metal layer and the plastic working layer, the invention further improves the binding strength of metal and plastic, has favorable heat resistance and resistance to chemical corrosion, no environment pollution, low noise and energy saving; in addition, the usage temperature is -60 DEG C to 250 DEG C, the friction coefficient is 0.08-0.32 and the wear rate is 0.8-3.5*10<-6>mm<3> / N. m.

Description

technical field [0001] The invention provides a metal-plastic composite self-lubricating material and a preparation method thereof. Background technique [0002] At present, with the development of aerospace industry, automobile industry, machinery industry, food and pharmaceutical machinery and various transmission parts, the requirements for various shaft sleeves, skateboards, slideways and friction parts are getting higher and higher. In mechanical operation, the following methods are often used to reduce the friction coefficient and prolong the service life of equipment: [0003] 1. Apply a layer of lubricating oil as a lubricant on the contact surface between the metal tile and the shaft to reduce the friction coefficient and prolong the service life of the equipment. However, under the condition of high temperature and high pressure, under the condition of corrosive gas and liquid, the use of metal tiles is limited in the equipment where lubricating oil is not allowed...

AI Technical Summary

Problems solved by technology

However, under the condition of high temperature and high pressure, under the condition of corrosive gas and liquid, the use of metal tiles is limited in the equipment where lubricating oil is not allowed in medicine, food, textile, printing and dyeing, etc., and there are fast wear and short service time. Waiting for deficiencies

[0004] 2. Using metal materials as the base material and embedding solid lubricant paste on the metal base material to form a self-lubricating bearing bush, although it has compact structure, firm combination, high temperature resistance, extreme pressure resistance and extended friction pair life Advantages, but the disadvantages are complex manufacturing, unstable coefficient of friction, poor corrosion resistance, and the exposed metal layer is easy to scratch the friction surface

[0005] 3. The bearing bush is made of plastic and sintered copper powder self-lubricating and wear-resistant composite material. Although it has the advantages of high mechanical strength, heat resistance and self-lubricating property, the combination of metal and plastic is poor, and the creep characteristics of plastic will cause The combination between metal and plastic is easy to peel off, which affects its actual service life

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