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Water-based lubricant based on two-dimensional material nanosheets/carbon quantum dots and preparation method of water-based lubricant

A technology of water-based lubricating fluid and carbon quantum dots, which is applied in lubricating compositions, petroleum industry, etc., to achieve the effects of good adaptability, simple and controllable preparation process, and low friction coefficient

Inactive Publication Date: 2017-03-22
QINGDAO UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the inherent hydrophobic properties of these 2D materials, there are few reports on their use as water-based lubricant additives.

Method used

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  • Water-based lubricant based on two-dimensional material nanosheets/carbon quantum dots and preparation method of water-based lubricant
  • Water-based lubricant based on two-dimensional material nanosheets/carbon quantum dots and preparation method of water-based lubricant
  • Water-based lubricant based on two-dimensional material nanosheets/carbon quantum dots and preparation method of water-based lubricant

Examples

Experimental program
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Effect test

Embodiment 1

[0026] In this example, graphite, citric acid, and urea are used as raw materials to prepare graphene nanosheet / carbon quantum dot water-based lubricating fluid. The specific preparation process is as follows:

[0027] (1) prepare carbon quantum dots with existing microwave method;

[0028] (2) Disperse 300mg of carbon quantum dots in 200mL of ultrapure water, and ultrasonicate for 10 minutes to prepare an aqueous solution of carbon quantum dots with a uniform dispersion concentration of 1.5g / L;

[0029] (3) Take 50mg of graphite powder and add it to the carbon quantum dot aqueous solution prepared in step (2), and obtain the dispersion in ultrasonic for 10 minutes;

[0030] (4) Pour the dispersion obtained in step (3) into a glass bottle of 250 milliliters, and perform ultrasonication. The ultrasonic power is 80 watts, the ultrasonic temperature is 60 degrees, and the ultrasonic time is 60 hours to obtain graphene nanosheets / carbon quantum Water-based lube;

[0031] (5) the...

Embodiment 2

[0033] In this example, molybdenum disulfide, citric acid, and urea are used as raw materials to prepare molybdenum disulfide / carbon quantum dot water-based lubricating fluid. The specific preparation process is as follows:

[0034] (1) prepare carbon quantum dots with existing microwave method;

[0035] (2) Place 300mg of carbon quantum dots in 200mL of ultrapure water, and ultrasonicate for 10 minutes to obtain a uniformly dispersed carbon quantum dot aqueous solution with a concentration of 1.5g / L;

[0036] (3) Weighing 50 mg of molybdenum disulfide powder and adding it to the carbon quantum dot aqueous solution, and ultrasonicating for 10 minutes to obtain the dispersion;

[0037] (4) Pour the dispersion obtained in step (3) into a 250 ml glass bottle, and perform ultrasonication. The ultrasonic power is 80 watts, the ultrasonic temperature is 60 degrees, and the ultrasonic time is 60 hours to obtain the aqueous dispersion, which is Molybdenum disulfide / carbon quantum dot...

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Abstract

The invention belongs to the technical field of nano lubricant material preparation and relates to a water-based lubricant based on two-dimensional material nanosheets / carbon quantum dots and a preparation method of the water-based lubricant. Carbon quantum dot powder is first prepared, then the prepared carbon quantum dot powder is added into ultra-pure water, and ultrasonic treatment is conducted for 10 min to obtain a carbon quantum dot aqueous solution; then, two-dimensional material nanosheets are added into the carbon quantum dot aqueous solution for ultrasonic treatment to prepare the water-based lubricant based on the two-dimensional material nanosheets / carbon quantum dots, wherein the water-based lubricant comprises, by mass, 0.01-15% of the carbon quantum dots, 0.001-0.1% of the two-dimensional material nanosheets and the balance ultra-pure water. The lubricant is simple and controllable in preparation process, low in cost, environmentally friendly, clean and free of toxin, large-scale production is easy, and the prepared water-based lubricant is extremely low in friction coefficient and good in adaptability with friction pairs, and does not corrode common carbon steel.

Description

[0001] Technical field: [0002] The invention belongs to the technical field of preparation of nano-lubricating materials, and relates to a water-based lubricating liquid based on two-dimensional material nanosheets / carbon quantum dots and a preparation method thereof, in particular to a preparation method based on two-dimensional material nanosheets / carbon quantum dots by ultrasonic cavitation. The method of the highly dispersed and stable water-based lubricating liquid of carbon quantum dots, the prepared nano-water-based lubricating liquid has the advantages of ultra-low friction coefficient, and the preparation process is environmentally friendly and low in cost. [0003] Background technique: [0004] According to statistics, about one-third to one-half of the world's annual energy is consumed in various forms of friction and wear, and lubrication technology is one of the most effective ways to solve this problem. At present, commonly used liquid lubricants can be divided...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M173/02C10M177/00C10N30/06
CPCC10M173/02C10M177/00C10M2201/041C10M2201/061C10M2201/065C10M2201/066C10N2030/06
Inventor 张文玲刘敬权田煜郭飞
Owner QINGDAO UNIV
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