Lubricating coating with low friction and long service life

A long-life, low-friction technology, used in lubricating compositions, coatings, additives, etc., can solve problems such as cylinder surface strain, scrapping of automobile engines, and leakage of lubricating oil, and achieve improved wear resistance and long wear life. , the effect of good wear resistance

Inactive Publication Date: 2011-11-23
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The reciprocating movement of the piston pump and the piston ring in the cylinder of the automobile engine can easily cause the surface of the cylinder to be strained, and the piston ring no longer acts as a seal,

Method used

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  • Lubricating coating with low friction and long service life
  • Lubricating coating with low friction and long service life

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Weigh 300 grams of mixed organic solvents, 100 grams of polyimide resin, 0.95 grams of nano-lanthanum trifluoride, 27.1 grams of molybdenum disulfide, 9.1 grams of graphite, and ball-milled for 48 hours. ): N,N-dimethylformamide 35%, toluene 65%].

[0020] The main properties are shown in Table 1.

[0021] Table 1 Main technical indicators of invention products

[0022]

Embodiment 2

[0023] Example 2: (unit: grams)

[0024] Polyimide resin 100 Molybdenum disulfide 22.5

[0025] Graphite 11.3 nm Lanthanum trifluoride 0.95

[0026] Mixed organic solvent 300g [wherein: N,N-dimethylformamide 40%, toluene 60%, (volume percentage)]

Embodiment 3

[0027] Example 3: (unit: grams)

[0028] Polyimide resin 100 Molybdenum disulfide 30.33

[0029] Graphite 7.6 nm Lanthanum trifluoride 0.95

[0030] Mixed organic solvent 300g [wherein: N,N-dimethylformamide 40%, toluene 60%, (volume percentage)]

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PUM

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Abstract

The invention discloses a lubricating coating with low friction and a long service life. The coating comprises, by mass: 15-25% of PMR (polymerizable monomeric reactant) type thermosetting polyimide resin, 3-8% of molybdenum disulfide powder, 0.5-4% of graphite powder, 0.1-0.5% of nanometer lanthanum trifluoride, and the balance mixed solvent. In the invention, the lubricating coating with low friction and a long service life is free of lead oxide, cadmium oxide, antimony trioxide and other metallic compounds forbidden by European standards. A paintcoat prepared with the coating of the invention can have high hardness, oil resistance and anti-irradiation property, low friction coefficient and long wearing life, etc.

Description

technical field [0001] The invention relates to a low-friction and long-life lubricating coating for automobile engine piston pumps and piston rings. Background technique [0002] Bonded solid lubricant coating technology is a new type of lubrication technology developed with the development of high-tech industries such as aviation, aerospace, and nuclear technology. It is an effective means to solve the problem of mechanical lubrication under special working conditions. At present, the bonding solid lubricating coating technology has been widely used in many fields and achieved remarkable results. However, many heavy metal oxides and their compounds are added to most bonded solid lubricating coatings in order to improve certain properties. These heavy metal compounds pollute the environment and cause great harm to human health, and are one of the substances banned by European standards. Therefore, the development of a low-friction, long-life environment-friendly adhesive s...

Claims

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Application Information

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IPC IPC(8): C09D179/08C09D7/12C10M125/00C10M125/22
Inventor 徐海燕周惠娣陈建敏安宇龙
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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