Solid lubricating composite material and manufacturing method thereof

A composite material and solid lubrication technology, applied in lubricating compositions, base materials, petroleum industry, etc., to achieve high wear resistance coefficient, high wear resistance, and improved technical indicators

Inactive Publication Date: 2010-06-02
NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] After searching, there is no report on solid lubricating composite materials containing carbon nanotubes and boron oxide

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Carbon nanotubes prepared in batches by catalytic chemical vapor deposition with iron-containing catalysts in a Tsinghua nano-agglomerate bed were ground with high-energy ball milling for 1 hour to obtain carbon nanotube segments. The volume percentage of the carbon nanotube segments was added 90% ethanol, 0.1% of the volume percentage of the surface dispersant alkylphenol polyoxyethylene ether (OP), and then ultrasonic treatment for 60 minutes to obtain carbon nano liquid.

[0026] According to the weight percentage, 3% of 300 mesh of boron oxide is added to 4% of carbon nano liquid, and the particle size is 93% of 200 mesh of PTFE. Mix the three at high speed and stir for 10 minutes. The viscous carbon nano liquid is evenly distributed in the oxidation In the matrix of boron and polytetrafluoroethylene, a mixture is obtained.

[0027] The mixture was molded into a mold, and the pressure was kept at 300 MPa for 10 minutes. The heating rate is 18min, the temperature is kept...

Embodiment 2

[0029] Carbon nanotubes prepared in batches by catalytic chemical vapor deposition with iron-containing catalysts in a Tsinghua nano-agglomerate bed were ground with high-energy ball milling for 1 hour to obtain carbon nanotube segments. The volume percentage of the carbon nanotube segments was added 90% ethanol, 0.15% by volume of the surface dispersant alkylphenol polyoxyethylene ether (OP), and then ultrasonic treatment for 60 minutes to obtain carbon nano liquid.

[0030] According to the weight percentage, add 300 mesh boron oxide 1% to 5% carbon nano liquid, and the particle size is 200 mesh PTFE 94%. Mix the three at high speed and stir for 10 min. The viscous carbon nano liquid is evenly distributed in the oxidation In the matrix of boron and polytetrafluoroethylene, a mixture is obtained.

[0031] The mixture was molded into a mold, and the pressure was kept at 300 MPa for 10 minutes. The heating rate is 18min, the temperature is kept at 380℃ for 120min, and the temperatu...

Embodiment 3

[0033] Carbon nanotubes prepared in batches by catalytic chemical vapor deposition with iron-containing catalysts in a Tsinghua nano-agglomerate bed were ground with high-energy ball milling for 1 hour to obtain carbon nanotube segments. The volume percentage of the carbon nanotube segments was added 90% ethanol, 0.15% by volume of the surface dispersant alkylphenol polyoxyethylene ether (OP), and then ultrasonic treatment for 60 minutes to obtain carbon nano liquid.

[0034] According to the weight percentage, 2% of the carbon nano liquid is added with 300 mesh of boron oxide 2%, and the particle size is 200 mesh of PTFE 96%. Mix the three at high speed and stir for 10 minutes. The viscous carbon nano liquid is evenly distributed in the oxidation In the matrix of boron and polytetrafluoroethylene, a mixture is obtained.

[0035] The mixture was molded into a mold, and the pressure was kept at 300 MPa for 10 minutes. The heating rate is 18min, the temperature is kept at 380℃ for 1...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M111/04C10M103/02C10M103/00C10M107/38C10N50/08
Inventor 张金梅闫文华韩雪侯国宪
Owner NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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