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Molybdenum-disulfide radical anti-corrosion wear-reduced coating

A molybdenum disulfide-based, molybdenum disulfide technology, applied in anti-corrosion coatings, epoxy resin coatings, coatings, etc., can solve problems such as short service life, poor adhesion, and insufficient corrosion resistance, and achieve lubrication service life , prolong service life, excellent anti-corrosion effect

Inactive Publication Date: 2007-11-14
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Dry film technology is an effective means to solve lubrication problems under harsh working conditions, but its main disadvantage is that it is not resistant to corrosion
Judging from the existing varieties of molybdenum disulfide-based solid lubricating coatings, most of them that meet the requirements of high temperature (greater than 250°C) use inorganic binders, the coating film is brittle, the adhesion is poor, and the service life is not long; The coating temperature of the organic binder should not be too high
The corrosion resistance of these coatings is insufficient, and it is difficult to meet the supporting requirements of automobile exhaust pipe gaskets

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Weigh 20 grams of molybdenum disulfide and 5 grams of carbon black into a ball mill jar, and then add 5 grams of mixed solvent for grinding. Then add 10 grams of epoxy resin and 1 gram of dicyandiamide, grind, and finally add 59 grams of mixed solvent to disperse evenly, which is the molybdenum disulfide-based high-temperature anti-corrosion and friction-reducing coating. (The volume percentage of mixed solvent is composed of: xylene 35%, n-butanol 35%, ethyl acetate 30%.)

Embodiment 2

[0016] Epoxy resin 5% Molybdenum disulfide 22%

[0017] Dicyandiamide 0.1% Carbon Black 3%

[0018] Mixed solvent balance (volume percentage: xylene 50%, n-butanol 25%, ethyl acetate 25%)

Embodiment 3

[0020] Epoxy resin 15% Molybdenum disulfide 25%

[0021] Sebacic acid dihydrazide 2% Carbon black 8%

[0022] Mixed solvent balance (volume percentage: xylene 30%, n-butanol 40%, ethyl acetate 30%)

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PUM

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Abstract

The present invention belongs to chemical paint technique area, specifically, it is amolybdenum disulfide fire-resistant anticorrosion antifriction paint. It selects fire-resistant bisphenol. A oxygen resin as gelatinizing agent, dicyandiamide as curing agent, molybdenum disulfide as lubricant, carbon black as antiseptic agent, and then add the mixed solvent. Finally the molybdenum disulfide fire resistant anticorrosion antifriction paint is formed. In the middle or high temperature environment, the coat has not only good abrasive resistance, bearing capacity and lubricity, but also excellent anticorrosion, grease-proof and erosion resistance. The effect: surface-prevention, antifriction, sealing, lubrication and extension the use of components. The metal sealing gasket painted with this paint can be used for a long time in the high temperature condition. It can reach the requirement of working in difficult condition, such as car ventilating pipe sealing components.

Description

technical field [0001] The invention belongs to the technical field of chemical coatings, in particular to a molybdenum disulfide-based high-temperature-resistant anti-corrosion anti-friction coating. technical background [0002] The operating conditions of automotive exhaust pipe gaskets are extremely harsh, involving high temperature, high load, special media, micro-vibration, etc. Dry film technology is an effective means to solve the lubrication problem under severe working conditions, but its main disadvantage is that it is not resistant to corrosion. Judging from the existing varieties of molybdenum disulfide-based solid lubricating coatings, most of them that meet the requirements of high temperature (greater than 250°C) use inorganic binders, the coating film is brittle, the adhesion is poor, and the service life is not long; The coating temperature of the organic binder should not be too high. The corrosion resistance of these coatings is insufficient, and it is ...

Claims

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Application Information

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IPC IPC(8): C09D163/02C09D5/08
Inventor 杨东汪长春徐智中
Owner FUDAN UNIV
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