Water-based nano-fluid cutting fluid prepared via adding of carbon nanotube compound, and preparation method thereof

A carbon nanotube and nanofluid technology, used in lubricating compositions, petroleum industry, etc., can solve the problems of affecting thermal conductivity, poor penetration performance in the cutting area, low dispersion, etc., to enhance lubrication and cooling effects, increase lubrication and Cooling effect, effect of increasing dispersion stability

Inactive Publication Date: 2017-11-17
SUZHOU INST OF INDAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] (1) The bearing capacity of carbon nanoparticles under high-speed and heavy-duty cutting conditions is not strong
Since there are no active chemical groups or elements on the surface of carbon nanoparticles, they cannot form a chemical reaction film with metals to effectively lubricate under severe friction conditions, which limits their application in the field of cutting processing.
[0006] (2) Solid lubricant nanoparticles have poor thermal conductivity (such as graphite is 160w / mK, molybdenum disulfide is 24.85w / mK), cooling and heat dissipation are poor, and the friction coefficient is high, and the anti-friction performance is not as good as that of oily lubricating additives
[0007] (3) Solid nanoparticles have no solubility in water, and the permeability in the cutting area is poor, so it is difficult to fully exert the lubrication and cooling effect
[0008] (4) Nanoparticles are easy to agglomerate and have poor dispersion in nanofluids
Nanofluid has huge interfacial energy, and the intermolecular attraction is easy to make nanoparticles aggregate into bundles or entanglement, and its surface is relatively inert, and its dispersion in water-based cutting fluid is low, which affects its thermal conductivity

Method used

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  • Water-based nano-fluid cutting fluid prepared via adding of carbon nanotube compound, and preparation method thereof
  • Water-based nano-fluid cutting fluid prepared via adding of carbon nanotube compound, and preparation method thereof
  • Water-based nano-fluid cutting fluid prepared via adding of carbon nanotube compound, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] A kind of preparation method of the carbon nanotube composite filled with oleic acid of the present embodiment 1, comprises the following steps:

[0056] (1) 80 parts of the carbon nanotubes are cut and shortened by mechanical ball milling, so that the aspect ratio thereof is 10:1 to 20:1;

[0057] (2) adding the treated carbon nanotubes into 400mL of concentrated sulfuric acid and 160mL of nitric acid mixture, under mechanical stirring, heating to reflux for 2h, and then cleaning and drying to obtain acidified carbon nanotubes;

[0058] (3) After shearing and dispersing 20 parts of oleic acid in 5L deionized water to obtain a lubricating additive emulsion, add acidified carbon nanotubes, mechanically stir under ultrasonic conditions, and fill at 60°C for 13 hours. After filling, Finally, it is obtained by washing with an organic solvent, suction filtration, vacuum drying and ultrafine pulverization.

Embodiment 2

[0060] A preparation method of a carbon nanotube composite filled with dihydrocarbyl pentasulfide (RC2540) of the present embodiment 2, comprising the following steps:

[0061] (1) 80 parts of the carbon nanotubes are cut and shortened by mechanical ball milling, so that the aspect ratio thereof is 10:1 to 20:1;

[0062] (2) adding the treated carbon nanotubes into 400mL of concentrated sulfuric acid and 160mL of nitric acid mixture, mechanically stirring, heating and refluxing for 120min, and then cleaning and drying to obtain acidified carbon nanotubes;

[0063] (3) Disperse 20 parts of dihydrocarbyl pentasulfide in 5L deionized water by shearing to obtain a lubricant additive emulsion, then add acidified carbon nanotubes, mechanically stir under ultrasonic conditions, fill at 60°C for 13h, and fill After completion, it is finally obtained by washing with an organic solvent, suction filtration, vacuum drying and ultrafine pulverization.

Embodiment 3

[0065] In order to prove that the carbon nanotube composites prepared in Examples 1-2 are filled with lubricating additives, this example uses infrared spectroscopy (IR) analysis to characterize the carbon nanotube composites prepared in Examples 1-2. Before and after, the characteristic difference of the absorption peaks in the infrared region of carbon nanotubes is used to judge whether the carbon nanotubes are filled with lubricating additives

[0066] First, conduct infrared spectrum analysis on the carbon nanotubes that have been acidified and not filled. After being oxidized by acid, the carbon nanotubes are -1 Office and 1722cm -1 The absorption peaks of hydroxyl and carboxyl groups appeared nearby, indicating that the acidified carbon nanotubes were equipped with oxygen-containing functional groups, at 1543cm -1 The planar absorption peak of the carbon ring structure appears at , which proves that the tubular structure of carbon nanotubes still exists, such as image...

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Abstract

The invention belongs to the technical field of cutting fluid, and discloses a water-based nano-fluid cutting fluid prepared via adding of a carbon nanotube compound, and a preparation method thereof. The water-based nano-fluid cutting fluid comprises, by mass, 0.5 to 2% of the carbon nanotube compound, 1 to 2% of methyl stearate, 0.5% of sodium dodecyl benzene sulfonate, 0.5% of OP-10, 1 to 2% of sodium benzoate, 0.5% of 2-n-octy1-4-isothiazoline-3-one, 1% of triethanolamine, 0.1 to 0.5% of disodium ethylene diamine tetraacetate, and the balance deionized water. The carbon nanotube compound is a one-dimensional nanocomposite prepared via adding a lubricant additive into the cavity of carbon nanotube obtained via acidifying treatment. According to the preparation method, the carbon nanotube compound is taken as an additive of the water-based nano-fluid cutting fluid, so that cutting fluid thermal conductivity is improved; the carbon nanotube compound possesses certain dissolvability and excellent dispersibility in the cutting fluid, so that the lubrication performance of the water-based nano-fluid cutting fluid is improved. The water-based nano-fluid cutting fluid is used for processing, workpiece quality is improved at same working conditions, cutter wearing is reduced, and cutting fluid quality is increased.

Description

technical field [0001] The invention belongs to the technical field of cutting fluid for mechanical processing technology, and in particular relates to a water-based nanofluid cutting fluid added with carbon nanotube compound and a preparation method thereof. Background technique [0002] Machining is an important part of mechanical manufacturing. With the acceleration of product innovation, industrial structure upgrading and intelligent manufacturing in my country's manufacturing industry, cutting processing technology is facing an urgent need to improve in terms of processing quality, processing efficiency and cost reduction. The surface quality of the workpiece, as an important indicator of the processing quality, mainly refers to the state of the part surface after processing, such as surface roughness, surface residual stress and surface hardening degree, etc. The surface quality of the workpiece has a significant impact on the performance of materials or parts. For ex...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M173/02C10M177/00C10N40/22C10N30/06
CPCC10M173/02C10M177/00C10M2201/041C10M2201/14C10M2207/141C10M2207/281C10M2209/104C10M2215/04C10M2215/042C10M2219/044C10M2219/104C10N2030/06C10N2040/22C10N2010/02
Inventor 关集俱
Owner SUZHOU INST OF INDAL TECH
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