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Preparation method of ultrathin fluorinated graphene composite lubrication film

A fluorinated graphene, lubricating film technology, applied in adhesive additives, final product manufacturing, sustainable manufacturing/processing, etc., can solve problems such as lubrication occasions that are not suitable for extensive and large-scale applications, limited size, and complex equipment. Achieve the effect of good application prospects, low adhesion, and low surface energy

Inactive Publication Date: 2016-05-25
SHANDONG ZHONGSHAN PHOTOELECTRIC MATERIAL CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the existing chemical vapor deposition and plasma technologies can also directly prepare fluorinated graphene films, the related equipment is complex, costly, and limited in size, which is not suitable for a wide range of lubricating applications.

Method used

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  • Preparation method of ultrathin fluorinated graphene composite lubrication film
  • Preparation method of ultrathin fluorinated graphene composite lubrication film
  • Preparation method of ultrathin fluorinated graphene composite lubrication film

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preparation example Construction

[0036] A preparation method of ultra-thin fluorinated graphene composite lubricating film, comprising the following steps:

[0037] (i) Preparation of fluorinated graphene dispersion

[0038] Add the hydroxide into the organic solvent and stir. During the stirring process, add fluorinated graphite powder, ultrasonically disperse the mixture until it is uniform, and then put it in an oven to dry until the solvent evaporates; heat the obtained mixture at 180°C for 4h, Then let it stand at room temperature, add the reaction product into water to stir and disperse, then filter under reduced pressure, wash to neutrality, and dry to obtain a black powder; redisperse the black powder in a water-alcohol mixed solvent, ultrasonicate for 5h, and ultrasonically After the obtained dispersion is centrifuged, the supernatant obtained is the fluorinated graphene dispersion;

[0039] (ii) Preparation of polydopamine adhesive-buffer layer

[0040] The single crystal silicon substrate is clea...

Embodiment 1

[0055] A preparation method of ultra-thin fluorinated graphene composite lubricating film, comprising the following steps:

[0056] (i) Preparation of fluorinated graphene dispersion

[0057] Dissolve 64.52 mg of sodium hydroxide and 90.32 mg of potassium hydroxide in 5 mL of absolute ethanol, stir at room temperature until completely dissolved, add 200 mg of graphite fluoride with a particle size of 4 μm during the stirring process, and ultrasonically disperse at 100 W for 30 min , then the dispersion was evaporated and dried at 50°C until the solvent evaporated; the uniformly mixed powder was heated at 180°C for 4 hours, and then allowed to stand at room temperature, then added with ultrapure water to stir and disperse, and filtered under reduced pressure and washed to Neutral pH, dry at 40°C to get a black powder, redisperse the above powder in a water-ethanol mixed solvent with a volume ratio of 1:1, and ultrasonically treat it at 100W for 5 hours, and the supernatant obta...

Embodiment 2

[0064] A preparation method of ultra-thin fluorinated graphene composite lubricating film, comprising the following steps:

[0065] (i) Preparation of fluorinated graphene dispersion

[0066] Dissolve 64.52mg of sodium hydroxide and 90.32mg of potassium hydroxide in 5mL of anhydrous methanol, stir at room temperature until completely dissolved, add 200mg of graphite fluoride with a particle size of 5μm during the stirring process, and ultrasonically disperse at 200W for 30min , then the dispersion was evaporated and dried at 50°C until the solvent evaporated; the uniformly mixed powder was heated at 180°C for 4 hours, and then allowed to stand at room temperature, then added with ultrapure water to stir and disperse, and filtered under reduced pressure and washed to Neutral pH, dry at 50°C to get a black powder, redisperse the above powder in a water-ethanol mixed solvent with a volume ratio of 1:1, ultrasonically treat it at 200W for 5 hours, and the supernatant obtained afte...

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Abstract

The invention discloses a preparation method of an ultrathin fluorinated graphene composite lubrication film. The method comprises (i) preparation of a fluorinated graphene dispersion liquid; (ii) preparation of a poly-dopamine bonding-buffering layer; (iii) preparation of a fluorinated graphene composite lubrication film. The stable fluorinated graphene dispersion liquid is prepared with convenient melting alkali treatment and ultrasonic dispersion methods and is spin-coated to form the film, the film is composited with a saline coupling agent and the poly-dopamine bonding layer, and the anti-friction and wear-resistant lubrication film which has the ultrathin thickness and uniform and continuous distribution is obtained; the lubrication film also has low surface energy and low adhesive force and shows dependence on the fluorine content; the lubrication film has bright application prospect in aspects of anti-friction, wear-resistant, hydrophobic and non-stick surface engineering and the like due to these characteristics.

Description

technical field [0001] The invention belongs to a preparation method of a composite film, in particular to a preparation method of an ultra-thin fluorinated graphene composite lubricating film. Background technique [0002] As two mature solid lubricating materials, polytetrafluoroethylene and fluorinated graphite have excellent lubricating properties and are widely used in various industrial fields. Among them, the introduction of fluorine leads to a significant reduction in the cohesive energy and surface energy of the material, and the weakening of the force makes it easier to ductile and interlayer shear sliding. The above characteristics endow the two fluorine-containing materials with much better lubricating properties than their non-metallic counterparts. Fluorinated bulk polyethylene and graphite. However, with the development of devices in the direction of miniaturization, low energy consumption, and high precision, traditional lubricating materials cannot match th...

Claims

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Application Information

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IPC IPC(8): C09D1/00C09D5/00C09J179/02C09J11/06C08G73/02H01L31/18
CPCC08G73/02C08K5/17C09D1/00C09D5/00C09J11/06C09J179/02H01L31/1804Y02P70/50
Inventor 王金清侯凯明杨生荣方治文刘超张敏
Owner SHANDONG ZHONGSHAN PHOTOELECTRIC MATERIAL CO LTD
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