Composite material sliding bearing with base of high-temp polymer

A technology of high-temperature-resistant polymers and composite materials, applied in the direction of bearing components, shafts and bearings, mechanical equipment, etc., can solve problems such as high temperature sensitivity, poor dimensional stability, and easy creep, and achieve broad application prospects and reduce The effect of small friction coefficient and good thermal conductivity

Inactive Publication Date: 2003-07-23
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high temperature sensitivity, poor heat resistance, low thermal conductivity, poor dimensional stability, and easy creep of the matrix material polymer, the technical performance and application range of composite material bearings have been restricted.
Usually only suitable for working conditions of <80°C, low normal temperature, low speed and light load, low speed and heavy load, and intermittent operation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 1. Example 1. Injection molding polyimide-based composite sliding bearing

[0025] Taking the amount of polyimide (PI) resin as the metering basis (percentage by weight, the same below), the weighed PI is blended with 8% polytetrafluoroethylene by weight.

[0026] Get again with PI weight meter, handle with titanate, the expanded graphite of 5% micron order (diameter range is 10-50um), the molybdenum disulfide of 5% nanometer order (diameter range is 10-50nm), 8% of nano-scale (8-30nm in diameter) silicon carbide is evenly dispersed with the above matrix resin. Then, while stirring, add chopped carbon fiber with a length of <1mm, accounting for 10% of the PI dosage, and a constant amount of additives. After stirring vigorously for more than 5 minutes, put it into the barrel of the extruder for melting, extrusion, and granulation. . Finally, put the pellets into the barrel of the injection molding machine. The temperature of the barrel reaches about 350°C. After heatin...

example 2

[0028] 2. Example 2. Molded polyphenylene sulfide-based composite sliding bearing

[0029] Based on the amount of polyphenylene sulfide (PPS) resin used as the metering basis, the weighed PPS is added to polyamide (PA) accounting for 6% of the amount used for blending.

[0030] Then add titanate-treated molybdenum disulfide of 2% nano-scale (diameter range of 10-80nm), 5% of nano-scale (diameter range of 8-20nm) alumina, and the above matrix resin Disperse evenly. Then, while stirring, add the composite crystal fiber with a length of <1mm, accounting for 15% of the polyphenylene content, and a constant amount of additives. After stirring at a high speed for more than 5 minutes, put it into a porcelain cylinder ball mill and homogenize it for about 1 hour. . Finally, weigh the homogenized material and put it into a mold, heat it to 350°C-370°C, pressurize it to 7-8MPa, hold the pressure for 8-12 minutes, cool it down to room temperature naturally, and demould it to make polyp...

example 3

[0032] 3. Example 3. Extrusion molding high temperature resistant polymer matrix composite sliding bearing

[0033] Taking the amount of polyphenylene resin as the measurement basis (percentage by weight), the weighed polyphenylene is blended with 5% polytetrafluoroethylene and 5% polyamide by weight.

[0034]Take polyphenylene ester weight again, add the expanded graphite that accounts for 12% micron order (diameter range is 20-90um) that accounts for PPS consumption to be processed with silane coupling agent again, 3% nanometer order (diameter range is 10um) -100nm) mica, 5% micron-sized (diameter range of 8-30um) alumina, 5% micron-sized (diameter range of 8-80um) tungsten arsenide. At the same time, while stirring, add 10% of glass fibers with a length of <2mm, and 5% of bronze fibers with a length of <2mm. After vigorously stirring for more than 5 minutes, put them into the barrel of the extruder for melting and extrusion. , Granulation. Finally, put the pellets into th...

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Abstract

This invention discloses a high-temp polymer matrix compound material sliding bearing which is processed according to conventional formation method with the compound material made of high-temp polymer matrix resin with functional additives, reinforced fiber and agent. The said matrix resin is made by teflon mixed with and / or polyamide and modified and the said function additives are nm or mm level mineral nonmetal fillers in which, at least one kind is particle of nm level. This invention provides a low friction ratio, good wearness, long working time, high PV, value, self lubricating compound material sliding bearing.

Description

[0001] (1) The technical fields mentioned [0002] The invention belongs to the technical field of polymer-based sliding bearings, and in particular relates to a self-lubricating composite material sliding bearing with a high-temperature-resistant polymer as a matrix, fiber reinforcement and functional fillers containing friction-reducing and anti-wear micropowder. (2) Background technology [0003] Due to the advantages of good self-lubricating performance, corrosion resistance, shock and noise reduction, resistance to foreign matter intrusion, low cost, and energy saving, polymer-based composite bearings have always been one of the key directions in the research and development of new bearings. However, due to the high temperature sensitivity, poor heat resistance, low thermal conductivity, poor dimensional stability, and easy creep of the matrix material polymer, the technical performance and application range of composite material bearings have been restricted. It is usual...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K5/59C08L101/12F16C33/12
Inventor 李学闵贾衍才苏衍良赵顺伟孙成栋
Owner UNIV OF JINAN
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