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Method for preparing composite anti-friction and anti-wear additive of graphene-loaded nanoparticles

A nano-particle, anti-friction and anti-wear technology, used in additives, petroleum industry, lubricating compositions, etc., to improve friction and wear problems, extend service life, and improve reliability

Inactive Publication Date: 2014-09-03
ACADEMY OF ARMORED FORCES ENG PLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Traditional lubricating additives are difficult to meet higher requirements such as high performance, low content, low carbon, environmental protection, and sustainable development, which requires continuous innovation and development of new lubricating additives

Method used

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  • Method for preparing composite anti-friction and anti-wear additive of graphene-loaded nanoparticles
  • Method for preparing composite anti-friction and anti-wear additive of graphene-loaded nanoparticles
  • Method for preparing composite anti-friction and anti-wear additive of graphene-loaded nanoparticles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] According to the mass of expanded graphite (g): nano Fe 3 o 4 The mass (g) of particle: the volume (L) of dimethyl sulfoxide is the ratio of 1:0.05:0.5, takes by weighing expanded graphite 0.44g, nanometer Fe 3 o 4 Particles 0.022g, measure dimethyl sulfoxide 0.22L, expand graphite and Fe with a particle size of 20nm 3 o 4 The particles are dispersed in dimethyl sulfoxide, ultrasonically dispersed in an ultrasonic material emulsification disperser for 10min, the diameter of the horn is 10mm, and the process parameters are: output power 150W, ultrasonic time 4s, interval time 2s. Then put it into an ultrasonic cell pulverizer for ultrasonic peeling, the diameter of the horn is 6mm, the working time is 3h, and the process parameters are: output power is 50W, ultrasonic time is 4s, and interval time is 2s. After the ultrasound is over, let it stand for 3 minutes, remove the black turbid liquid and perform high-speed centrifugation for 30 minutes, wash it with ethanol u...

Embodiment 2

[0028] The dimethyl sulfoxide in embodiment 1 is changed into deionized water, and other processes remain unchanged, and graphene-supported Fe is obtained. 3 o 4 Nano particle composite anti-friction and anti-wear additive GN / Fe 3 o 4 . Weigh the prepared composite anti-friction and anti-wear additive GN / Fe 3 o 4 Dispersed in liquid paraffin, configured as GN / Fe with a concentration of 0.01wt% 3 o 4 Paraffin dispersion system, equipment and conditions used for the friction test are the same as in Example 1. Under load test 20N, GN / Fe 3 o 4 The relationship curve between the friction coefficient of the paraffin dispersion system and the test time is as follows figure 2 shown.

Embodiment 3

[0030] According to the mass of expanded graphite (g): nano-SiO 2 The mass (g) of particle: the volume (L) of dimethyl sulfoxide is the ratio of 1:0.05:0.5, takes by weighing expanded graphite 0.44g, nanometer SiO 2 Particles 0.022g, measure 0.22L dimethyl sulfoxide, expand graphite and SiO with a particle size of 20nm 2 The particles are dispersed in dimethyl sulfoxide, ultrasonically dispersed in an ultrasonic material emulsification disperser for 10min, the diameter of the horn is 10mm, and the process parameters are: output power 150W, ultrasonic time 4s, interval time 2s. Then put it into an ultrasonic cell pulverizer for ultrasonic peeling, the diameter of the horn is 6mm, the working time is 3h, and the process parameters are: output power is 50W, ultrasonic time is 4s, and interval time is 2s. After the ultrasonic wave is over, after standing still for 5 minutes, the black turbid liquid is removed and subjected to high-speed centrifugation for 20 minutes, washed with ...

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Abstract

The invention discloses a method for preparing a composite anti-friction and anti-wear additive of graphene-loaded nanoparticles. The method comprises the following steps: carrying out ultrasonic dispersion on expanded graphite, nanoparticles and a solvent in an ultrasonic emulsification disperser to obtain an evenly mixed dispersion system A; putting the dispersion system A into an ultrasonic cell crusher to carry out ultrasonic stripping treatment, stripping the expanded graphite into multi-layer graphene sheets by ultrasonic action, and loading the multi-layer graphene sheets and the nanoparticles to obtain a dispersion system B after ultrasonic stripping is ended; standing and separating the dispersion system B, taking out a black troubled liquor at the lower part to carry out high-speed centrifugal separation, and washing the separated solid into neutral property, so as to obtain a solid C; putting the solid C into a vacuum drying oven to dry, so as to obtain the composite anti-friction and anti-wear additive of the graphene-loaded nanoparticles. The method disclosed by the invention is simple and convenient, simple in process, strong in controllability, and applicable to industrial production; the prepared composite anti-friction and anti-wear additive has the characteristics of good stability, low friction coefficient, excellent abrasion resistance and the like, and has a broad application prospect in the field of frictional wear.

Description

technical field [0001] The invention belongs to the technical field of nanometer materials, in particular to a method for preparing graphene-loaded nanoparticle composite anti-friction and anti-wear additives. Background technique [0002] With the development of modern industry, machinery, equipment, production lines, etc. are constantly developing in the direction of high speed, heavy load, integration, and high precision. For example, when gears and gears, shafts and bearings, piston rings and cylinder liners are in contact with external media in the working environment, friction and wear will inevitably occur, which will cause the reliability and safety of the equipment to decline, and cause major economic losses. losses and wasted energy. According to statistics, in 2006, friction and wear caused an economic loss of 950 billion yuan nationwide, accounting for 4.5% of GDP, and 1 / 3 of energy was consumed in overcoming friction. Therefore, effectively controlling frictio...

Claims

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Application Information

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IPC IPC(8): C10M125/00C10N30/06C10M125/02C10M125/10C10M125/26C10M125/04
Inventor 乔玉林赵海朝臧艳张庆崔庆生
Owner ACADEMY OF ARMORED FORCES ENG PLA
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