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A kind of preparation method of nano-boehmite composite graphene oxide anti-wear lubricant

A nano-boehmite and anti-wear lubricant technology, which is used in the preparation of polymer composite materials, can solve the problems of long reaction time and poor dispersion of graphene oxide, and achieve low cost, low friction coefficient, and reduced wear Effect

Active Publication Date: 2018-04-17
成都恒固新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, it has not been reported to prepare an anti-wear lubricant by boehmite composite graphene oxide. In the prior art, alkylamine-modified graphene oxide is used as an anti-wear lubricant. Although it can improve its oil solubility, to a certain extent The anti-friction and anti-wear properties are improved, but the dispersion of graphene oxide is not good, the reaction time is too long, it needs to be reacted at 120 °C for 4 days, and thionyl chloride with strong corrosiveness is used in the preparation process

Method used

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  • A kind of preparation method of nano-boehmite composite graphene oxide anti-wear lubricant
  • A kind of preparation method of nano-boehmite composite graphene oxide anti-wear lubricant
  • A kind of preparation method of nano-boehmite composite graphene oxide anti-wear lubricant

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Embodiment 1

[0020] A preparation method of nano-boehmite composite graphene oxide anti-wear lubricant, comprising the following steps:

[0021] (1) Preparation of graphene oxide (GO): Take 0.8g of graphite and add it to a 500mL flask, then add 24mL of 95% concentrated sulfuric acid to the beaker, put the flask in ice water and stir for 30min at a stirring speed of 600r / min, then add 1g NaNO 3 Stir, stirring speed is 600r / min, add 5g KMnO again after 30min 4 , stirred at 600r / min for 2h, then moved to an oil bath at 39°C, stirred for another 2.5h at a stirring speed of 600r / min, then slowly added 41mL of deionized water dropwise with a constant pressure dropper, and raised the bath temperature to 95°C and then 800r / min stirred for 1.5h, and finally added dropwise 120mL 10% H with a constant pressure dropper 2 o 2 , Stir at 1000r / min until the color of the reaction system turns from golden yellow to black, immediately add 100mL of HCl with a concentration of 0.5mol / L, stir at 1000r / min ...

experiment example 1

[0024] Experimental example 1 is to the XRD pattern analysis of sample of the present invention

[0025] Depend on figure 1 It can be seen that the graphene oxide (GO) sample only has a very strong diffraction peak at 2θ=10.96°, and the interplanar spacing d≈0.81nm can be calculated by the Bragg formula, indicating that the degree of graphite oxidation is relatively high, and the prepared GO has a high purity. very high. Nano-boehmite (AlOOH) belongs to orthorhombic crystal structure, and the obtained hybrid boehmite (A-K) has a broad peak near 2θ=20.50°, which is due to the existence of silane coupling agent (KH560 ) independent amorphous phase structure. In the diffraction spectrum of nano-boehmite composite graphene oxide (A-K-G), the characteristic peak of GO disappeared, and a broad and weak peak appeared at 2θ=6.30° (interlayer spacing d≈1.4nm), indicating that the graphene oxide sheets The stacking method of the structure has changed to a great extent, with larger la...

experiment example 2

[0026] Experimental Example 2 Preparation of nanocomposite lubricating oil with different concentrations by using A-K-G and lubricating base oil VHVI8

[0027] (1) Preparation of a nanocomposite lubricating oil with a concentration of 0.015mg / g

[0028] Accurately weigh 1.5mg of A-K-G, add 100g of lubricating oil base oil VHVI8, ultrasonically disperse in a water bath at 60°C for 2 hours, and let it stand for 24 hours to prepare a nanocomposite lubricating oil with a concentration of 0.015mg / g.

[0029] (2) preparation concentration is the nanocomposite lubricating oil of 0.030mg / g

[0030]Accurately weigh 3.0mg of A-K-G, add 100g of lubricating base oil VHVI8, ultrasonically disperse in a water bath at 60°C for 2 hours, and let it stand for 24 hours to prepare a nanocomposite lubricating oil with a concentration of 0.030mg / g.

[0031] (3) preparation concentration is the nanocomposite lubricating oil of 0.045mg / g

[0032] Accurately weigh 4.5mg of A-K-G, add 100g of lubrica...

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Abstract

The invention discloses a preparation method of a nano-boehmite composite graphene oxide anti-wear lubricant, which comprises the following steps: (1) preparing graphene oxide; (2) weighing 1g of nano-boehmite and 100mL of absolute ethanol to mix, After ultrasonic dispersion for 30min, add 20mL absolute ethanol containing 2g KH560 to prepare KH560 modified graphene oxide; (3) Weigh 0.5g KH560 modified graphene oxide and add it to 100mL deionized water, hydrolyze at 30°C for 2h, then add 0.1-0.2g graphene oxide, react at 85°C for 10-12h, place at room temperature until the layers are separated, remove the lower part of the precipitate, wash with deionized water until pH = 7, and finally wash with acetone 4 times, using 50mL acetone each time, centrifuge, The solid matter is dried to obtain nano boehmite composite graphene oxide. The preparation method is simple, and the prepared product has good wear resistance and lubricity.

Description

technical field [0001] The invention belongs to the field of preparation methods of polymer composite materials, and in particular relates to a preparation method of a nano-boehmite composite graphene oxide anti-wear lubricant. Background technique [0002] Graphene is a transparent material with a single atomic layer and a two-dimensional network structure developed in the past ten years. 2 The hexagonal lattice planar film composed of hybrid orbitals is a two-dimensional material with a thickness of one or more carbon atoms. It has good electrical conductivity, thermal conductivity, and light transmission, and its mechanical strength is better than other existing materials. In 2004, Novoselov and Geim of the University of Manchester in the United Kingdom successfully prepared two-dimensional graphene crystals that can truly exist independently for the first time by using tape to peel off highly oriented graphite. Graphene has an infinitely repeating periodic structure in ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M125/02C10M125/00C10N30/06C10N30/04
Inventor 何毅张磊施太和范毅杨强斌卿大咏
Owner 成都恒固新材料科技有限公司
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