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Method for preparing nano-MoS2-Al2O3 composite rolling lubricant by utilizing dopamine polymerization

A mos2-al2o3, compound rolling technology, applied in the field of lubrication, can solve the problems of reducing anti-wear and anti-friction performance, and achieve the effect of reducing rolling force and friction coefficient, improving surface quality and good reproducibility

Active Publication Date: 2020-05-08
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the high surface energy of nano-sized spherical particles, aluminum oxide is easily agglomerated into micron-sized particles in a liquid phase environment, thereby reducing its anti-wear and anti-friction properties.

Method used

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  • Method for preparing nano-MoS2-Al2O3 composite rolling lubricant by utilizing dopamine polymerization
  • Method for preparing nano-MoS2-Al2O3 composite rolling lubricant by utilizing dopamine polymerization
  • Method for preparing nano-MoS2-Al2O3 composite rolling lubricant by utilizing dopamine polymerization

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Experimental program
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Effect test

Embodiment 1

[0028] The main components and mass fraction of embodiment 1 are as follows:

[0029] serial number component name Mass fraction / wt.% 1 Molybdenum disulfide-alumina nanoparticles 1 2 Glycerol 5 3 Triethanolamine 6 4 Hexametaphosphate 0.4 5 Sodium dodecyl benzene sulfonate 0.8 6 Waterborne Borate 0.5 7 Defoamer 0.1 8 Deionized water 86.2

[0030] Add 2.0 g of polydopamine-modified molybdenum disulfide nanosheets and 100 g of ethylene glycol into the beaker, and after magnetic stirring for 5 min, gradually add 4.0 g of aluminum chloride hexahydrate and 10.0 g of polyethylene glycol 200, and continue at 900 r / min After stirring for 20 min, the beaker was placed in 40 kHz ultrasonic wave for 15 min. Then add 20g of sodium acetate, keep stirring at the above temperature and speed for 2 hours, transfer the obtained liquid to a high-temperature reactor, heat it to 180°C for hydrothermal reaction for 15 hours, a...

Embodiment 2

[0033] The main components and mass fraction of embodiment 2 are as follows:

[0034] serial number component name Mass fraction / wt.% 1 Molybdenum disulfide-alumina nanoparticles 3 2 Glycerol 3 3 Triethanolamine 5 4 Hexametaphosphate 1 5 Sodium dodecyl benzene sulfonate 2.2 6 Waterborne Borate 0.5 7 Defoamer 0.1 8 Deionized water 85.2

[0035]Add 2.0 g of polydopamine-modified molybdenum disulfide nanosheets and 100 g of ethylene glycol into the beaker, and after magnetic stirring for 5 min, gradually add 4.0 g of aluminum chloride hexahydrate and 8.0 g of polyethylene glycol 200, and continue at 900 r / min After stirring for 20 min, the beaker was placed in 40 kHz ultrasonic wave for 15 min. Then add 20g of sodium acetate, keep stirring at the above temperature and speed for 2 hours, transfer the obtained liquid to a high-temperature reactor, heat to 180°C for hydrothermal reaction for 15 hours, and cent...

Embodiment 3

[0038] The main components and mass fraction of embodiment 3 are as follows:

[0039] serial number component name Mass fraction / wt.% 1 Molybdenum disulfide-alumina nanoparticles 4 2 Glycerol 3 3 Triethanolamine 3 4 Hexametaphosphate 1.5 5 Sodium dodecyl benzene sulfonate 3.2 6 Waterborne Borate 0.5 7 Defoamer 0.1 8 Deionized water 84.7

[0040] Add 2.0 g of polydopamine-modified molybdenum disulfide nanosheets and 100 g of ethylene glycol into the beaker, and after magnetic stirring for 5 min, gradually add 6.0 g of aluminum chloride hexahydrate and 10.0 g of polyethylene glycol 200, and continue at 1000 r / min After stirring for 20 min, the beaker was placed in 40 kHz ultrasonic wave for 15 min. Then add 20g of sodium acetate, keep stirring at the above temperature and speed for 2 hours, transfer the obtained liquid to a high-temperature reactor, heat to 190°C for hydrothermal reaction for 15 hours, and...

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Abstract

A method for preparing a nano-MoS2-Al2O3 composite rolling lubricant by utilizing dopamine polymerization belongs to the technical field of lubrication. The method comprises the following steps: auto-polymerizing dopamine to form polydopamine, modifying the surface of a molybdenum disulfide nanosheet with the polydopamine to obtain a polydopamine-modified molybdenum disulfide nanosheet; then adding aluminum chloride hexahydrate, polyethylene glycol 200 and sodium acetate, centrifuging the obtained obtained solution, and washing and drying the obtained material to obtain nano-MoS2-Al2O3 composite powder; and finally, dispersing the prepared composite nano-powder into deionized water, and adding glycerol, triethanolamine, sodium hexametaphosphate, sodium dodecyl benzene sulfonate, water-based borate and a trace amount of a defoaming agent to obtain the required composite rolling lubricant. The composite lubricating oil is simple in preparation process, good in reproducibility, low in cost, high in efficiency and beneficial to batch production, can replace traditional rolling lubricating oil severely polluting the environment to a certain extent, is used for technological lubricationin the plate and strip steel hot rolling process, and promotes energy conservation, emission reduction and environment-friendly production in the plate and strip steel rolling process.

Description

technical field [0001] The invention relates to the technical field of lubrication, which is used for process lubrication in the hot rolling process of plate and strip steel, in particular to a method for preparing nano-MoS by polymerization of dopamine 2 -Al 2 o 3 Method for compound rolling lubricants. Background technique [0002] Appropriate process lubrication technology in the hot rolling process of strip steel can effectively reduce friction, reduce rolling force, increase reduction rate, improve surface quality, and reduce energy consumption. The traditional rolling lubricating oil has serious environmental pollution, worsens the production environment, and the waste oil treatment cost is high, which does not meet the environmental protection requirements of energy saving and emission reduction. With the development of nanotechnology in recent years, nanoparticles with unique physical and chemical properties have been used more and more in the field of process lub...

Claims

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Application Information

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IPC IPC(8): C10M169/04C10N30/06
CPCC10M169/048C10M2201/062C10M2201/066C10M2201/085C10M2207/022C10M2209/104C10M2213/062C10M2215/042C10M2217/046C10M2219/044C10M2227/061
Inventor 孙建林贺佳琪唐华杰孟亚男
Owner UNIV OF SCI & TECH BEIJING
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