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Preparation method of magnesium silicate/carbon composite nano-lubricant

A carbon composite, magnesium silicate technology, used in lubricating compositions, additives, petroleum industry and other directions, can solve the problems of high risk, long ball milling time, high energy consumption, etc., to reduce friction performance, improve friction reduction and anti-wear performance, the effect of prolonging the service life

Active Publication Date: 2018-06-29
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method requires strong alkalinity, which is relatively dangerous, and the ball milling time is long, and the energy consumption is large

Method used

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  • Preparation method of magnesium silicate/carbon composite nano-lubricant
  • Preparation method of magnesium silicate/carbon composite nano-lubricant

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Experimental program
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preparation example Construction

[0026] A preparation method of magnesium silicate / carbon composite nano-lubricant, comprising the following steps:

[0027] Step 1: High energy ball milling. High-energy ball milling (dry milling, zirconium silicate balls, ball diameter 0.4-0.7mm, ball-material ratio 10:1) of natural talc powder for 6 hours to obtain ball mill powder;

[0028] Step 2: hydrothermal treatment. Put microcrystalline cellulose, water, and hydrochloric acid into a hydrothermal kettle at a mass ratio of 1:(69-72):(0-3), and react at 200-240°C for 4-8h. Cool naturally to room temperature, filter the product and dry at 60°C to obtain carbon microspheres with a particle size of 50-100nm;

[0029] Step three: Composite and modification. Mix the ball mill powder obtained in Step 1, the carbon microspheres obtained in Step 2, absolute ethanol and surface modifier oleic acid in a mass ratio of 1:(0.1-1):20:(1-2), and perform high-energy ball milling (wet milling) , zirconium silicate balls, the ball dia...

Embodiment 1

[0034] Step 1: High energy ball milling. The natural talc powder was high-energy ball milled for 6 hours to obtain a ball milled powder;

[0035] Step 2: hydrothermal treatment. Microcrystalline cellulose, water, and hydrochloric acid were subjected to hydrothermal reaction at a mass ratio of 1:72:0, and reacted at 200°C for 4 hours. After the instrument was naturally cooled to room temperature, the product was taken out, filtered, and oven-dried at 60°C. Obtain carbon microsphere powder;

[0036] Step three: Composite and modification. Mix the ball mill powder obtained in Step 1, the carbon microspheres obtained in Step 2, absolute ethanol and surface modifier oleic acid in a mass ratio of 1:0.1:20:1, and perform high-energy ball milling (wet milling, zirconium silicate balls, balls Diameter 0.4-0.7mm, ball-to-material ratio is 40:1) 5h, obtains the modified magnesium silicate / carbon composite nano-powder;

[0037] Step 4: Add the modified magnesium silicate / carbon compo...

Embodiment 2- Embodiment 4

[0040] Compared with Example 1, the rest of the conditions remain the same, only the addition ratio of the modified magnesium silicate / carbon composite nanopowder in step 4 is different, and the modified magnesium silicate / carbon composite in Example 2-Example 4 The addition ratio of the nanometer powder is 0.3wt%, 0.5wt%, 0.7wt%, respectively.

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Abstract

The invention discloses a preparation method of a magnesium silicate / carbon composite nano-lubricant. The preparation method comprises the steps: firstly, carrying out high-energy ball milling of a natural talc powder, and sieving to obtain a ball-milled powder; then mixing a carbon source, water and hydrochloric acid according to the mass ratio of 1:(69-72):(0-3), carrying out a hydrothermal reaction, after the reaction is finished, naturally cooling to room temperature, and filtering and drying the product, to obtain carbon microspheres; next mixing the ball-milled powder, the carbon microspheres, absolute ethyl alcohol and a surface modifier according to the mass ratio of 1:(0.1-1):20:(1-2), and carrying out high-energy ball milling, to obtain a modified magnesium silicate / carbon composite nano-powder; and finally, adding the modified magnesium silicate / carbon composite nano-powder into base oil according to the ratio of 0.1 wt%-0.7 wt%, successively stirring and carrying out ultrasonic treatment, and thus obtaining the magnesium silicate / carbon composite nano-lubricant. The prepared lubricant has excellent antifriction effect and good repair performance.

Description

technical field [0001] The invention relates to the field of self-repairing composite nano-additives, in particular to a preparation method of a magnesium silicate / carbon composite nano-lubricant. Background technique [0002] Studies have shown that adding nanoparticles to lubricating oil can reduce the friction coefficient, reduce wear, and greatly improve the lubricating ability and efficiency of lubricating oil. In addition, the attachment of nanoparticles to the surface of the friction pair can also repair the damaged parts of the metal surface, and form a firm adhesion film on the surface of the friction pair to prevent wear. Therefore, nanoparticles have a wide application prospect in lubricating oil, and thus are highly valued. [0003] Nanocarbon materials, such as graphene, carbon nanotubes, and diamond, have the advantages of high elasticity, low density, good heat insulation, high strength, and strong hydrophobicity, and have been widely used as lubricating oil ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M125/00C10N30/06
CPCC10M125/00C10M2201/041C10M2201/102C10M2201/14C10N2030/06
Inventor 费杰齐樱黄剑锋张超谷岳峰王忠伟薛欢
Owner SHAANXI UNIV OF SCI & TECH
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