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Nano graphene steel-based self-lubricating composite material and preparation method thereof

A nano-graphene and composite material technology, applied in the field of materials, can solve problems such as low bonding strength, high friction coefficient, and short service life, and achieve high friction and wear performance, high mechanical strength, and good wear resistance

Inactive Publication Date: 2019-12-31
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, due to the shortcomings of low bonding strength, high friction coefficient, and short service life of steel-based self-lubricating composite materials, a more effective technology is urgently needed. This technology requires low friction and wear coefficients, high bonding strength, and long service life. Simplified production process, low cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Perform ultrasonic cleaning on the steel base for 40 minutes, then put the steel base into a mixture of concentrated sulfuric acid and water for 20 minutes, where the specific gravity of concentrated sulfuric acid and water is 1:1, and then put the steel base into a mass percentage concentration of 5 Wash the steel base with deionized water for 5 times, and put the steel base in a vacuum dryer for drying. The immersion time is 20 min. The strong base aqueous solution is sodium hydroxide solution. The temperature of the dryer is set to 90℃, and the time is 60min. After drying, the steel substrate is subjected to high-energy shot peening nano-treatment, the shot diameter is 0.5mm, the shot speed is 60m / s, and the shot time is 30min;

[0020] According to the proportion of mass percentage, nano graphene 20%, polytetrafluoroethylene 50%, polyethylene 20%, polyparaben 10%, put the nano working layer material into the dryer for drying Dry, the temperature of the dryer is set to ...

Embodiment 2

[0023] Carry out ultrasonic cleaning on the steel base for 60 minutes, then put the steel base in a mixture of concentrated sulfuric acid and water for 30 minutes, where the proportion of concentrated sulfuric acid to water is 1:1, and then put the steel base into a mass percentage concentration of 10 Soaking time is 30min. The strong alkali aqueous solution is sodium hydroxide solution. Then the steel base is washed 5 times with deionized water, and the steel base is dried in a vacuum dryer. The temperature of the dryer is set to 90℃, and the time is 60min. After drying, the steel substrate is subjected to high-energy shot peening nano-treatment, the shot diameter is 0.5mm, the shot speed is 60m / s, and the shot time is 60min;

[0024] According to the proportion of mass percentage, nano graphene 30%, polytetrafluoroethylene 50%, polyethylene 10%, polyparaben 10%, put the nano working layer material into the dryer for drying Dry, the temperature of the dryer is set to 80°C, and t...

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Abstract

The invention discloses a nano graphene steel-based self-lubricating composite material and a preparation method thereof, and relates to the field of materials. The nano graphene steel-based self-lubricating composite material is composed of a nano working layer and a steel matrix in sequence from top to bottom; wherein the nano working layer material comprises the following components in percentage by mass: 20-30% of nano graphene, 50-60% of polytetrafluoroethylene, 10-20% of polyethylene and 10% of poly-p-hydroxybenzoate. The nano graphene steel-based self-lubricating composite material is capable of avoiding the defects of low bonding strength, high friction and wear resistance, short service life and the like of the conventional steel-based self-lubricating composite materials; and thenano steel-based composite material which is prepared through firmly bonding of a steel base with a mixed nano material, and has the advantages of high friction and wear resistance, high mechanical strength, good wear resistance and good impact resistance is provided.

Description

Technical field [0001] The invention relates to the field of materials, in particular to a nano-graphene steel-based self-lubricating composite material and a preparation method thereof. Background technique [0002] With the rapid development of the times, the world's demand for high-tech products with high efficiency, energy saving and environmental protection is increasing. The lubrication of traditional machine parts uses lubricating oil and grease to reduce friction and wear. However, under special working conditions such as food, environmental protection, and water conservancy, the operation of machine parts is required to operate in a low or even oil-free working environment Therefore, it is necessary to develop better products so that the machine parts can operate under multiple working conditions and can reduce the environmental noise caused by vibration and beating of the machine parts during operation. Current steel-based self-lubricating composite materials have shor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B15/18B32B15/085B32B27/32B32B37/10B32B37/06B32B38/16C08L27/18C08L23/06C08L67/04C08K3/04
CPCB32B15/085B32B15/18B32B27/322B32B37/06B32B37/10B32B38/162B32B2307/306B32B2307/554B32B2307/558C08K2201/011C08L27/18C08L2205/03C08L23/06C08L67/04C08K3/042
Inventor 戴亚春王海杨超骆志高
Owner JIANGSU UNIV
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