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Serpentine/functionalized graphene lubricating oil additive, preparation method and application thereof

A technology of graphene lubricating oil and serpentine is applied in the field of lubricating oil to achieve the effects of simple operation, high diffusivity and reduced friction coefficient in the preparation process

Active Publication Date: 2021-02-12
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although graphene oxide and graphene have certain lubricating properties and mechanical properties [Patent No. CN 101812351A], they do not have the ability to self-repair during mechanical friction

Method used

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  • Serpentine/functionalized graphene lubricating oil additive, preparation method and application thereof
  • Serpentine/functionalized graphene lubricating oil additive, preparation method and application thereof
  • Serpentine/functionalized graphene lubricating oil additive, preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0023] (1) Graphene oxide prepared by the improved Hummers method is used as a raw material, and the obtained graphene oxide is modified with a silane coupling agent. First, weigh 1.6 g of 2.5 wt% graphene oxide aqueous solution, add 150 mL of deionized water to dilute and ultrasonically disperse evenly. Then, 6 mL of silane coupling agent (A-1100) was added dropwise, and magnetically stirred for 1 h at room temperature. Finally, it was transferred to a flask and reacted in a water bath at 80 °C for 2 h. Let it stand for cooling, centrifuge, wash with water and add appropriate amount of deionized water to obtain a functionalized graphene oxide dispersion. figure 1 It is graphene oxide and functionalized graphene oxide infrared spectrum, it can be seen from the spectrum that functionalized graphene oxide has been successfully prepared.

[0024] (2) Weigh 0.08 g of serpentine nanopowder, dissolve it in the above-mentioned functionalized graphene oxide dispersion liquid; stir i...

Embodiment 2

[0028] (1) Graphene oxide prepared by the improved Hummers method is used as a raw material, and the obtained graphene oxide is modified with a silane coupling agent. First, weigh 1.6 g of 2.5 wt% graphene oxide aqueous solution, add 150 mL of deionized water to dilute and ultrasonically disperse evenly. Then, 3 mL of silane coupling agent (KBM-602) was added dropwise, and magnetically stirred for 1 h at room temperature. Finally, it was transferred to a flask and reacted in a water bath at 80 °C for 2 h. Let it stand for cooling, centrifuge, wash with water and add appropriate amount of deionized water to obtain a functionalized graphene oxide dispersion.

[0029] (2) Weigh 0.08 g of serpentine nanopowder, dissolve it in the above-mentioned functionalized graphene oxide dispersion liquid; stir it magnetically for 60 min; Separate, wash with water and ethanol respectively, and dry to obtain serpentine / functionalized graphene lubricating oil additive powder.

[0030] (3) Tri...

Embodiment 3

[0033] (1) Graphene oxide prepared by the improved Hummers method is used as a raw material, and the obtained graphene oxide is modified with a silane coupling agent. First, weigh 1.6 g of 2.5 wt% graphene oxide aqueous solution, add 150 mL of deionized water to dilute and ultrasonically disperse evenly. Then, 8 mL of silane coupling agent (A-1110) was added dropwise, and magnetically stirred at room temperature for 0.5 h. Finally, transfer it to a flask, react in a water bath at 60 °C for 1 h, and let it stand for cooling; centrifuge, wash with water, and add an appropriate amount of absolute ethanol to obtain a functionalized graphene oxide dispersion.

[0034] (2) Weigh 0.32 g of serpentine nanopowder, dissolve it in the above-mentioned functionalized graphene oxide dispersion; stir it magnetically for 30 min; Cooling; centrifugal separation, washing with water and ethanol respectively, and drying to obtain serpentine / functionalized graphene lubricating oil additive powder...

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Abstract

The invention discloses a serpentine / functionalized graphene lubricating oil additive, a preparation method and an application thereof. The steps are: modifying graphene oxide with a silane coupling agent to obtain functionalized graphene oxide; mixing functionalized graphene oxide with serpentine nanopowder, and thermally reacting with water (or solvent) to obtain serpentine / functionalized graphene oxide. The nanocomposite material of graphene; the composite material additive is mixed with lubricating oil in a certain proportion, and then the friction and wear experiment is carried out. The effect of significantly reducing the friction coefficient can be achieved with a very small amount of addition, and it has excellent anti-wear and anti-friction and anti-friction properties. Intelligent repair function. The additive powder of the present invention has excellent stability and dispersibility in lubricating oil, and has simple process, high cost performance, and easy-to-obtain raw materials; its excellent surface performance, heat conduction effect and stability can have beneficial effects on lubricating oil.

Description

technical field [0001] The invention relates to a serpentine / functionalized graphene lubricating oil additive, a preparation method and an application thereof, belonging to the technical field of lubricating oil. Background technique [0002] With the continuous development of mechanical equipment in the direction of high speed, heavy load, high precision, integration and long life, the impact of wear problems is becoming more and more extensive, so the technical requirements for anti-friction and wear are getting higher and higher. Although traditional lubricating oil still occupies a dominant position in today's lubricating oil field and market, its limitations in harsh working conditions such as high load, high speed, and long-term operation cannot be ignored. At present, researchers at home and abroad use different types of additives, such as nano-metal elemental powders, hydroxides, oxides, sulfur compounds, borates, silicates, and polymer compounds, to improve the lubr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M125/00C10M125/26C10M177/00C10N30/06
CPCC10M125/00C10M125/26C10M177/00C10M2201/102C10M2201/14C10N2030/06
Inventor 郝青丽杨锐雷武夏锡锋
Owner NANJING UNIV OF SCI & TECH
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