Solid lubricant, and preparation method and use thereof

Abstract

The invention relates to the field of material lubrication, and concretely relates to a solid lubricant, and a preparation method and a use thereof. The solid lubricant includes graphene quantum dots, fluorinated graphene quantum dots and nanometer molybdenum disulfide. The graphene quantum dots are adopted as a conductive material, and an insulator fluorinated graphene quantum dots and the nanometer molybdenum disulfide are used as auxiliary materials, so the conductivity of the solid lubricant is adjusted, the balance between the electrically conductive performance and the insulation performance is achieved, and the needs of the conductive solid lubricant under complex extreme conditions such as high vacuum, ultralow temperature, strong radiation, ultrahigh temperature, ultralow temperature, high rotating speed, high electromagnetic field, strong chemical corrosion and strong salt spray corrosion.

Description

technical field

[0001] The invention relates to the field of material lubrication, in particular to a solid lubricant and its preparation method and application, especially to a solid lubricant that can be applied to electronic appliances, vacuum, radiation, strong magnetic field, strong electric field, ultra-high temperature, ultra-low temperature, high speed, Solid lubricants containing graphene quantum dots in special and extreme conductive solid lubrication fields such as high chemical corrosion and salt spray corrosion. Background technique

[0002] As a commonly used solid lubricating material, soft coating materials are based on metal, ceramic or non-metallic materials, and a layer of material with anti-friction and anti-wear properties is prepared on the substrate through coating preparation technology. Common soft coating materials include soft metal , graphite, sulfide, oxide, fluoride, selenide, etc. Most of these materials have low shear strength and adhere to t...

Examples

Embodiment 1

[0051] A lubricant is prepared, including: 50 parts by weight of graphene quantum dots, 40 parts by weight of fluorinated graphene quantum dots and 10 parts by weight of nanomolybdenum disulfide. Among them, the sheet diameter of graphene quantum dots is less than 80 nanometers, and more than 80% of the graphene quantum dots are less than 20 nanometers; the sheet thickness is less than 3 nanometers, and the graphene quantum dots with a sheet thickness of less than 2 nanometers account for more than 80%. , the carbon content of graphene quantum dots is above 99%. The sheet diameter of fluorinated graphene quantum dots is less than 80 nanometers, and more than 80% of the graphene quantum dots are less than 20 nanometers; the sheet thickness is less than 3 nanometers, and the graphene quantum dots with a sheet thickness of less than 2 nanometers account for 80% Above, the fluorine content of the fluorinated graphene quantum dot is about 25%, and the carbon content is about 74%. ...

Embodiment 2

[0057] A lubricant was prepared, including: 70 parts by weight of graphene quantum dots, 25 parts by weight of fluorinated graphene quantum dots and 5 parts by weight of nanomolybdenum disulfide. Among them, the sheet diameter of graphene quantum dots is less than 80 nanometers, and more than 80% of the graphene quantum dots are less than 20 nanometers; the sheet thickness is less than 3 nanometers, and the graphene quantum dots with a sheet thickness of less than 2 nanometers account for more than 80%. , the carbon content of graphene quantum dots is above 99%. The sheet diameter of fluorinated graphene quantum dots is less than 80 nanometers, and more than 80% of the graphene quantum dots are less than 20 nanometers; the sheet thickness is less than 3 nanometers, and the graphene quantum dots with a sheet thickness of less than 2 nanometers account for 80% Above, the fluorine content of the fluorinated graphene quantum dot is about 25%, and the carbon content is about 74%. ...

Embodiment 3

[0062] A lubricant is prepared, including: 80 parts by weight of graphene quantum dots, 15 parts by weight of fluorinated graphene quantum dots and 5 parts by weight of nanomolybdenum disulfide. Among them, the sheet diameter of graphene quantum dots is less than 80 nanometers, and more than 80% of the graphene quantum dots are less than 20 nanometers; the sheet thickness is less than 3 nanometers, and the graphene quantum dots with a sheet thickness of less than 2 nanometers account for more than 80%. , the carbon content of graphene quantum dots is above 99%. The sheet diameter of fluorinated graphene quantum dots is less than 80 nanometers, and more than 80% of the graphene quantum dots are less than 20 nanometers; the sheet thickness is less than 3 nanometers, and the graphene quantum dots with a sheet thickness of less than 2 nanometers account for 80% Above, the fluorine content of the fluorinated graphene quantum dot is about 25%, and the carbon content is about 74%. T...

technical field

[0001] The invention relates to the field of material lubrication, in particular to a solid lubricant and its preparation method and application, especially to a solid lubricant that can be applied to electronic appliances, vacuum, radiation, strong magnetic field, strong electric field, ultra-high temperature, ultra-low temperature, high speed, Solid lubricants containing graphene quantum dots in special and extreme conductive solid lubrication fields such as high chemical corrosion and salt spray corrosion. Background technique

[0002] As a commonly used solid lubricating material, soft coating materials are based on metal, ceramic or non-metallic materials, and a layer of material with anti-friction and anti-wear properties is prepared on the substrate through coating preparation technology. Common soft coating materials include soft metal , graphite, sulfide, oxide, fluoride, selenide, etc. Most of these materials have low shear strength and adhere to t...

Examples

Embodiment 1

[0051] A lubricant is prepared, including: 50 parts by weight of graphene quantum dots, 40 parts by weight of fluorinated graphene quantum dots and 10 parts by weight of nanomolybdenum disulfide. Among them, the sheet diameter of graphene quantum dots is less than 80 nanometers, and more than 80% of the graphene quantum dots are less than 20 nanometers; the sheet thickness is less than 3 nanometers, and the graphene quantum dots with a sheet thickness of less than 2 nanometers account for more than 80%. , the carbon content of graphene quantum dots is above 99%. The sheet diameter of fluorinated graphene quantum dots is less than 80 nanometers, and more than 80% of the graphene quantum dots are less than 20 nanometers; the sheet thickness is less than 3 nanometers, and the graphene quantum dots with a sheet thickness of less than 2 nanometers account for 80% Above, the fluorine content of the fluorinated graphene quantum dot is about 25%, and the carbon content is about 74%. ...

Embodiment 2

[0057] A lubricant was prepared, including: 70 parts by weight of graphene quantum dots, 25 parts by weight of fluorinated graphene quantum dots and 5 parts by weight of nanomolybdenum disulfide. Among them, the sheet diameter of graphene quantum dots is less than 80 nanometers, and more than 80% of the graphene quantum dots are less than 20 nanometers; the sheet thickness is less than 3 nanometers, and the graphene quantum dots with a sheet thickness of less than 2 nanometers account for more than 80%. , the carbon content of graphene quantum dots is above 99%. The sheet diameter of fluorinated graphene quantum dots is less than 80 nanometers, and more than 80% of the graphene quantum dots are less than 20 nanometers; the sheet thickness is less than 3 nanometers, and the graphene quantum dots with a sheet thickness of less than 2 nanometers account for 80% Above, the fluorine content of the fluorinated graphene quantum dot is about 25%, and the carbon content is about 74%. ...

Embodiment 3

[0062] A lubricant is prepared, including: 80 parts by weight of graphene quantum dots, 15 parts by weight of fluorinated graphene quantum dots and 5 parts by weight of nanomolybdenum disulfide. Among them, the sheet diameter of graphene quantum dots is less than 80 nanometers, and more than 80% of the graphene quantum dots are less than 20 nanometers; the sheet thickness is less than 3 nanometers, and the graphene quantum dots with a sheet thickness of less than 2 nanometers account for more than 80%. , the carbon content of graphene quantum dots is above 99%. The sheet diameter of fluorinated graphene quantum dots is less than 80 nanometers, and more than 80% of the graphene quantum dots are less than 20 nanometers; the sheet thickness is less than 3 nanometers, and the graphene quantum dots with a sheet thickness of less than 2 nanometers account for 80% Above, the fluorine content of the fluorinated graphene quantum dot is about 25%, and the carbon content is about 74%. T...

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