Composite material of high-temperature resistant metal-fabric/resin self-lubricating bearing and preparation method of composite material

A technology of self-lubricating bearings and composite materials, applied in metal layered products, chemical instruments and methods, synthetic resin layered products, etc., can solve the problems of low temperature resistance, high wear rate, poor wear resistance, etc. The effect of self-lubricating wear resistance, high temperature resistance, and simple and easy preparation method

Inactive Publication Date: 2011-08-10
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a high temperature resistant, high load bearing, good wear resistance, good self-lubricating bearing composite material and its preparation method to solve the prob

Method used

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  • Composite material of high-temperature resistant metal-fabric/resin self-lubricating bearing and preparation method of composite material
  • Composite material of high-temperature resistant metal-fabric/resin self-lubricating bearing and preparation method of composite material
  • Composite material of high-temperature resistant metal-fabric/resin self-lubricating bearing and preparation method of composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Prepare a polyphenylene sulfide suspension with a mass fraction of 40%, add 2% graphite, stir well and disperse uniformly by ultrasonic. Take the twill PTFE / aramid composite fabric that has been treated by plasma surface, make the polyphenylene sulfide resin and the mixed braided fabric compound by dip-coating, then dry at 120°C for 15min, repeat several times until the quality of polyphenylene sulfide Fractional content is 40%. Take another steel plate with porous sintered tin bronze powder on the surface, make polyphenylene sulfide resin in the pores of the porous sintered tin bronze powder layer by brushing, dry at 120°C for 15 minutes, repeat several times until the polyphenylene sulfide is filled with porous sintered tin bronze Pores in the powder layer. Lay the above blended fabric / polyphenylene sulfide / graphite composite material on the porous sintered tin bronze powder layer containing polyphenylene sulfide in the hole, pressurize to 5MPa at 290°C, and release ...

Embodiment 2

[0033] Prepare a PA46 solution with a mass fraction of 35%, add 3% molybdenum disulfide, stir well and disperse evenly by ultrasonic. Take the plain PTFE / carbon fiber composite fabric that has been treated by strong alkali etching, and make PA46 resin and blended fabric composite by dip-coating, then vacuum dry at 100°C for 15min, repeat several times until the mass fraction of PA46 is 30 %. Take another steel plate with porous sintered tin bronze powder on the surface, make the pores of the porous tin bronze powder layer contain PA46 resin by brushing, vacuum dry at 100°C, repeat several times until PA46 fills the pores of the tin bronze powder layer. Lay the above mixed braided fabric / PA46 / molybdenum disulfide composite material on the porous sintered tin bronze powder layer containing PA46 in the hole, pressurize to 10MPa at 285°C, and release the air every 3min, a total of 3 times. After 10 minutes, keep the heat and pressure for 20 minutes, and then cool naturally. Fina...

Embodiment 3

[0035] Prepare a polyetheretherketone suspension with a mass fraction of 30%, add a mixture of 5% chromium oxide and 3% nano-silicon carbide, fully stir and ultrasonically disperse evenly. Take the satin polytetrafluoroethylene / glass fiber composite fabric that has been treated with plasma, and make the polyetheretherketone resin and the mixed fabric composite by dip-coating, and then dry at 110°C for 20min, repeat several times until the polyetheretherketone The mass fraction content is 35%. Take another steel plate with porous sintered tin bronze powder on the surface, make the pores of the porous sintered tin bronze powder layer contain polyether ether ketone resin by brushing, dry at 110 ° C, repeat several times until polyether ether ketone is filled with porous sintered tin bronze Pores in the powder layer. Lay the above blended fabric / polyether ether ketone / filler composite material on the porous sintered tin bronze powder layer containing polyether ether ketone in the...

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Abstract

The invention belongs to the technical field of polymer composite materials and in particular relates to a composite material of a high-temperature resistant metal-fabric/resin self-lubricating bearing and a preparation method of the composite material. The composite material comprises three layers, wherein the bottom layer is a metal plate; the middle layer is a porous sintered tin bronze powder layer, and self-lubricating wear-resisting resin is impregnated in a pore; the surface layer is made of the composite material of mixed fabric and self-lubricating wear-resisting resin; the mixed weaved fabric is the composition of at least two materials of polytetrafluoroethylene fiber, carbon fiber, aramid fiber, polybenzimidazole fiber and glass fiber; and the self-lubricating wear-resisting resin is the blend of one or more of polyphenylene sulfide, polytetrafluoroethylene, polyether-ether-ketone and nylon. The composite material of the bearing has good high-temperature resistance, high loading capacity, good wear resistance and good self-lubricating property, solves the problems of high wear rate, poor wear resistance, low-temperature resistance and the like of the material of a DU bearing, and realizes the excellent frictional property and using reliability under high temperature of the material of the bearing. The composite material is applicable to the self-lubricating bearings in the fields of aeronautics and astronautics, machinery, automobiles, home appliances, office facilities and the like.

Description

technical field [0001] The invention belongs to the technical field of polymer composite materials, and in particular relates to a high-temperature resistant metal-fabric / resin self-lubricating bearing composite material and a preparation method thereof. Background technique [0002] In the middle of the 20th century, the British Gracia (Glacier) company invented a three-layer composite self-lubricating bearing material, which is based on a steel plate, on which a spherical bronze powder layer is sintered, and then covered with wear-reducing and wear-resistant plastic. It is referred to as DU material for short. These products have a long history and are relatively mature, and have been widely used in self-lubricating bearings. However, the self-lubricating and wear-resistant plastic layer of DU bearings is mainly polytetrafluoroethylene. Among them, due to the poor wear resistance of polytetrafluoroethylene, the bearing capacity of the product is limited. Under high load,...

Claims

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Application Information

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IPC IPC(8): B32B15/02B32B15/04B32B15/14B32B15/20B32B3/24B32B27/04
Inventor 李同生黄挺吕仁国
Owner FUDAN UNIV
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