Preparation method of graphite alkenyl self-assembly multilayer nanometer lubricating film

A lubricating film, graphene-based technology, applied in coatings, metal material coating processes, etc., can solve the problem of not very prominent anti-wear performance, and achieve the effect of reducing friction coefficient, increasing bonding strength, and reducing surface viscosity

Inactive Publication Date: 2012-09-19
NANCHANG HANGKONG UNIVERSITY
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  • Abstract
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  • Application Information

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Problems solved by technology

However, the self-assembled multilayer lubricating films currently prepared are mostly based on the chemical adsorption of organosilane molecules, and the anti-wear properties of these organosilane molecules themselves are not very prominent.

Method used

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  • Preparation method of graphite alkenyl self-assembly multilayer nanometer lubricating film
  • Preparation method of graphite alkenyl self-assembly multilayer nanometer lubricating film
  • Preparation method of graphite alkenyl self-assembly multilayer nanometer lubricating film

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Embodiment Construction

[0020] In order to better understand the present invention, illustrate by example:

[0021] (1) Prepare a 5 mmol / L dilute solution of 3-aminopropyltriethoxysilane in a water / acetone mixture with a volume ratio of 95:5.

[0022] (2) Pre-treat the monocrystalline silicon wafers, ultrasonically clean the monocrystalline silicon wafers P(100) polished on one side in acetone solvent for 10 minutes, blow them dry with nitrogen, and place them in concentrated sulfuric acid with a volume ratio of 7:3 and 30%H 2 o 2 solution at 90°C for 0.5 hours. Take it out, clean it ultrasonically in ultrapure water and dry it with nitrogen, immerse it in the above dilute solution of 3-aminopropyltriethoxysilane, let it stand for 0.5 hours, take it out, clean it ultrasonically in ultrapure water, and blow it dry with nitrogen.

[0023] (3) Prepare a graphene oxide aqueous solution with a concentration of 0.4 mg / mL.

[0024] (4) Immediately immerse the single crystal silicon substrate assembled w...

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Abstract

The invention discloses a preparation method of a graphite alkenyl self-assembly multilayer nanometer lubricating film. The preparation method comprises utilizing a self-assembly method to prepare an amino silane coupling agent film on the surface of monocrystalline silicon substrate processed by hydroxylation; then utilizing surface chemical reaction to assemble graphite oxide on the surface of the amino silane coupling agent film; and further, utilizing hydroxyl on the surface of the graphite oxide to assemble silane molecules with low surfaces to the surface of the graphite oxide. The preparation method has the advantages of being simple in device, low in cost, simple in preparation process and easy to operate. The results of friction and abrasion tests show that a graphene lubrication film and the monocrystalline silicon substrate have good combination performance, good friction performance and good abrasion resistance and can serve as effective means for protecting and lubricating materials in micro-machines.

Description

technical field [0001] The invention relates to a preparation method of a graphene oxide-based self-assembled multilayer lubricating film. Background technique [0002] Micro-electro-mechanical systems (MEMS), which emerged in the mid-to-late 1980s, have the characteristics of small size, light weight, low energy consumption, high integration and intelligence, and are widely used in biology, medicine, environmental control, aerospace, digital communication, transmission, and so on. Modern technology fields such as sensing technology have shown great potential for development. [0003] However, after the miniaturization of the structure size, the gap between the various parts of MEMS is often at the nanometer level or even zero gap. In the process of movement, affected by the size effect, various surface forces such as surface adhesion and friction are less effective than traditional machinery. It is very prominent and becomes a key factor affecting MEMS performance, stabili...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C26/00
Inventor 欧军飞薛名山王法军李文
Owner NANCHANG HANGKONG UNIVERSITY
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