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Solid lubricating material used for air bearing and preparation method of same

A technology of solid lubricating material and air bearing, which is used in lubricating compositions, petroleum industry, etc., can solve the problems of high technical requirements, difficult to meet the requirements of 100,000 times of starting and stopping of bearings, and no mention of wear resistance.

Inactive Publication Date: 2017-07-04
北京智拓博科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] For example, patent CN103725069A discloses a solid self-lubricating coating containing polytetrafluoroethylene and a preparation method thereof. Although the coating has a certain anti-friction effect, the wear resistance is not mentioned, and the coating is prepared by this method. The time required for the layer is long and the curing process is complicated; the patent CN103628058A discloses a method for preparing a high wear-resistant metal-based self-lubricating PTFE coating, which is cross-linked by melting the polytetrafluoroethylene coating to form a three-dimensional network As a result, the wear resistance of the coating is improved, but the preparation process is complicated, the technical requirements are high, and the friction coefficient is still high
[0004] In addition, the existing air bearing lubricating coating materials generally have a temperature resistance of about 180°C, poor wear resistance, and require high-temperature sintering, which is very inconvenient and difficult to meet the requirements of 100,000 times of bearing start-stop.

Method used

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  • Solid lubricating material used for air bearing and preparation method of same
  • Solid lubricating material used for air bearing and preparation method of same
  • Solid lubricating material used for air bearing and preparation method of same

Examples

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Effect test

Embodiment 1

[0018] Embodiment 1: a kind of solid lubricating material that is used for air bearing, comprises the raw material component of following weight fraction: the polytetrafluoroethylene of 40 parts, the graphite powder of 5 parts, the polyethylene glycol of 0.5 part and the methyl of 25 parts pyrrolidone.

[0019] The above-mentioned solid lubricating material for air bearings is prepared by the following method:

[0020] Step 1, degreasing, dewatering and derusting the surface of the workpiece;

[0021] Step 2: Mix polytetrafluoroethylene, graphite powder, surfactant and methylpyrrolidone evenly in proportion, and spray with 0.1Mpa pure air, with the distance between the spray gun and the surface of the air bearing greater than 300mm.

[0022] Step 3, place the sprayed material in an environment of 190°C, heat for 20 minutes, and cool naturally.

Embodiment 2

[0023] Embodiment 2: a kind of solid lubricating material that is used for air bearing, comprises the raw material component of following weight fraction: the polytetrafluoroethylene of 60 parts, the graphite powder of 15 parts, the 3-tripolyhexafluoropropane epoxy of 1.5 parts Amidopropyl(2-sulfite)ethyldimethylammonium and 50 parts of methylpyrrolidone.

[0024] The above-mentioned solid lubricating material for air bearings is prepared by the following method:

[0025] Step 1, degreasing, dewatering and derusting the surface of the workpiece;

[0026] Step 2: Mix polytetrafluoroethylene, graphite powder, surfactant and methylpyrrolidone evenly in proportion, spray with 0.3Mpa pure air, and the distance between the spray gun and the surface of the air bearing is greater than 300mm.

[0027] Step 3, place the sprayed material in an environment of 210°C, heat for 10 minutes, and cool naturally.

Embodiment 3

[0028] Embodiment 3: a kind of solid lubricating material that is used for air bearing, comprises the raw material component of following weight fraction: the polytetrafluoroethylene of 45 parts, the graphite powder of 7 parts, the 3-three polyepoxyhexafluoropropane of 0.8 part Amidopropyl(2-sulfite)ethyldimethylammonium and 30 parts of methylpyrrolidone.

[0029] The above-mentioned solid lubricating material for air bearings is prepared by the following method:

[0030] Step 1, degreasing, dewatering and derusting the surface of the workpiece;

[0031] Step 2: Mix polytetrafluoroethylene, graphite powder, surfactant and methylpyrrolidone evenly according to the proportion, spray with 0.2Mpa pure air, and the distance between the spray gun and the surface of the air bearing is greater than 300mm.

[0032] Step 3, place the sprayed material in an environment of 200°C, heat for 15 minutes, and cool naturally.

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Abstract

The invention belongs to the technical field of lubricants and particularly relates to a solid lubricating material used for an air bearing. The solid lubricating material includes, by weight, 40-60 parts of polytetrafluoroethylene, 5-15 parts of graphite powder, 0.5-1.5 parts of a surfactant, and 25-50 parts of methylpyrrolidone. Correspondingly, the invention also discloses a method of preparing the solid lubricating material, which includes the steps of: deoiling, dewatering and derusting the surface of a work piece; uniformly mixing the raw materials according to the ratios, and spray-coating the work piece with the mixture with pure air; heating the coated work piece at 190-210 DEG C, and naturally cooling the work piece. The method is simple in operations and is very low in cost, and is suitable for large-scale promotion in the field of air bearing. The solid lubricating material can work under a damp and corrosive environment for a long time and has good insulation property.

Description

technical field [0001] The invention belongs to the technical field of lubricants, and in particular relates to a solid lubricating material for air bearings and a preparation method thereof. Background technique [0002] Air bearings are widely used in some mechanical fields due to their simple structure, high operating precision, fast operating speed, no need for lubricating oil, and long life. For some working conditions of air bearings, once the contact friction between moving and static parts occurs, catastrophic failure will occur, resulting in bearing wear and even bearing lockup. Therefore, it is necessary to spray solid lubricating materials on the surface of the parts to reduce friction and enhance wear resistance. [0003] For example, patent CN103725069A discloses a solid self-lubricating coating containing polytetrafluoroethylene and a preparation method thereof. Although the coating has a certain anti-friction effect, the wear resistance is not mentioned, and t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/04C10N30/02C10N30/08C10N30/06C10N40/02C10N40/16C10N50/08
CPCC10M169/04C10M2201/041C10M2213/0623C10M2215/08C10M2215/223C10N2030/02C10N2030/06C10N2030/08C10N2040/16C10N2050/08
Inventor 李记东
Owner 北京智拓博科技有限公司