CN110747036A - High-quality micro-emulsified cutting fluid for metal processing - Google Patents

High-quality micro-emulsified cutting fluid for metal processing Download PDF

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Publication number
CN110747036A
CN110747036A CN201910990884.2A CN201910990884A CN110747036A CN 110747036 A CN110747036 A CN 110747036A CN 201910990884 A CN201910990884 A CN 201910990884A CN 110747036 A CN110747036 A CN 110747036A
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cutting fluid
parts
carbon nanotubes
oil
metal processing
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纪小坤
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Jieshou Jintian Agricultural Machinery Equipment Co Ltd
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Jieshou Jintian Agricultural Machinery Equipment Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M125/00—Lubricating compositions characterised by the additive being an inorganic material
    • C10M125/22—Compounds containing sulfur, selenium or tellurium
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M125/00—Lubricating compositions characterised by the additive being an inorganic material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M125/00—Lubricating compositions characterised by the additive being an inorganic material
    • C10M125/02—Carbon; Graphite
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
    • C10M169/04—Mixtures of base-materials and additives
    • C10M169/048—Mixtures of base-materials and additives the additives being a mixture of compounds of unknown or incompletely defined constitution, non-macromolecular and macromolecular compounds
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M173/00—Lubricating compositions containing more than 10% water
    • C10M173/02—Lubricating compositions containing more than 10% water not containing mineral or fatty oils
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M177/00—Special methods of preparation of lubricating compositions; Chemical modification by after-treatment of components or of the whole of a lubricating composition, not covered by other classes
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/04—Elements
    • C10M2201/041—Carbon; Graphite; Carbon black
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/06—Metal compounds
    • C10M2201/065—Sulfides; Selenides; Tellurides
    • C10M2201/066—Molybdenum sulfide
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
    • C10M2205/14—Synthetic waxes, e.g. polythene waxes
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/02—Hydroxy compounds
    • C10M2207/021—Hydroxy compounds having hydroxy groups bound to acyclic or cycloaliphatic carbon atoms
    • C10M2207/022—Hydroxy compounds having hydroxy groups bound to acyclic or cycloaliphatic carbon atoms containing at least two hydroxy groups
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/40—Fatty vegetable or animal oils
    • C10M2207/401—Fatty vegetable or animal oils used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
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    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
    • C10M2209/104—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing two carbon atoms only
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    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
    • C10M2209/108—Polyethers, i.e. containing di- or higher polyoxyalkylene groups etherified
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
    • C10M2209/109—Polyethers, i.e. containing di- or higher polyoxyalkylene groups esterified
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
    • C10M2219/04—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions containing sulfur-to-oxygen bonds, i.e. sulfones, sulfoxides
    • C10M2219/042—Sulfate esters
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
    • C10M2219/04—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions containing sulfur-to-oxygen bonds, i.e. sulfones, sulfoxides
    • C10M2219/044—Sulfonic acids, Derivatives thereof, e.g. neutral salts

Abstract

The invention relates to the technical field of cutting fluid, in particular to high-quality micro-emulsified cutting fluid for metal processing, which comprises a carbon nano-tube strong acid oxidation partPreparing ball-milling carbon nano-tubes and oil-based mixed solution, preparing water-based mixed solution and preparing micro-emulsion cutting fluid; compared with the existing cutting fluid, the invention adds the prepared MoS into the water-based mixed solution2The CNTs nano tubular structure can be used for enhancing the lubricating property and the cooling property of the micro-emulsion cutting fluid by utilizing the strong lubricating property and the higher thermal conductivity of the CNTs nano tubular structure, and MoS can be obtained even at the high temperature of 650-1200 DEG C2The lubricating property can not be lost due to carbonization, and the service life reduction of the cutter due to the influence of high temperature in the metal cutting process or the poor cutting surface effect of the workpiece due to the loss of the high-temperature lubricating property can be effectively avoided; in addition, the oil base of the cutting fluid is biodegradable base oil, and various additives also have no pollution to the environment, so that the cutting fluid responds to the current green and environment-friendly mouth marks.

Description

High-quality micro-emulsified cutting fluid for metal processing
Technical Field
The invention relates to the technical field of cutting fluid, in particular to high-quality micro-emulsified cutting fluid for metal processing.
Background
Cutting is the most important processing method in machine manufacturing, and a proper amount of cutting fluid needs to be added between a cutter and a workpiece in the cutting process to play various functions of cooling, lubricating, rust prevention, cleaning and the like. In particular, the cooling performance and the lubricating performance of the cutting fluid used for metal cutting determine the service life of the cutting tool and the cutting effect of the surface of a workpiece.
The invention with the patent number of CN104479826B discloses a cutting fluid in the processing process of superhard materials, which comprises the following components: molybdenum disulfide, tartaric acid, chlorinated paraffin, oleic acid, sodium petroleum sulfonate, and transformer oil and/or soybean oil. Although the molybdenum disulfide is added into the cutting fluid to enable the cutting fluid to have better lubricating property, researches show that the molybdenum disulfide is easily carbonized and loses efficacy at high temperature, so that the lubricating property of the cutting fluid is lost at high temperature, and the service life of a cutter and the cutting effect of the surface of a workpiece are reduced. In addition, the cutting fluid is oil-based cutting fluid, the cooling performance is poor, and heat on a cutter and a workpiece is not easy to dissipate during cutting, so that the cutting tool is required to have higher high temperature resistance, and the service life of the cutting tool is greatly shortened. Therefore, in order to overcome the defects that the conventional cutting fluid is easy to lose the lubricity and the self-cooling performance when being used for cutting metal, the invention of the high-quality cutting fluid for solving the technical problems is a technical problem to be solved.
Disclosure of Invention
The invention aims to solve the technical problem of designing a high-quality micro-emulsified cutting fluid for metal processing so as to solve the problems of insufficient self-cooling property and easy loss of lubricity at high temperature of the conventional cutting fluid.
The invention is realized by the following technical scheme:
a high-quality micro-emulsified cutting fluid for metal processing comprises the following steps:
(1) carbon nanotube strong acid oxidation treatment: weighing 12-15 parts by weight of carbon nanotubes, then putting the carbon nanotubes into a strong acid solution with the weight 6-10 times of that of the carbon nanotubes, heating the carbon nanotubes to 90 ℃, treating the carbon nanotubes for 30-35 min, stopping heating, self-heating and cooling the carbon nanotubes to 25 ℃, taking out the carbon nanotubes, washing the carbon nanotubes with deionized water to be neutral, and drying the carbon nanotubes for later use;
(2) ball-milling the carbon nano-tubes: putting the carbon nanotubes obtained in the step (1) into a ball mill, ball-milling at a rotating speed of 1200r/min for 2-3 h, putting the ball-milled carbon nanotubes into glycol with the weight 4-6 times of that of the carbon nanotubes, and adding 20-24 parts of nano MoS2Uniformly stirring 2-3 parts of dimethyl sulfate and 1-2 parts of sodium dodecyl sulfate, and carrying out ultrasonic treatment for 20-25 min for later use, wherein the ultrasonic frequency is 240-360 kHz;
(3) preparing oil-based mixed liquid: taking 25-28 parts by weight of biodegradable base oil, adding 6-8 parts of emulsifier, uniformly stirring, adding 3-4 parts of triethanolamine, 2-4 parts of polyethylene wax, 2-3 parts of compound surfactant, 1-3 parts of antirust agent and 1-2 parts of defoaming agent, and uniformly stirring for later use;
(4) preparing a water-based mixed solution: taking 110-135 parts by weight of deionized water, adding 26-34 parts of the carbon nanotubes obtained in the step (2), 6-9 parts of glycerol and 3-5 parts of propylene glycol, and uniformly stirring for later use;
(5) preparing a micro-emulsion cutting fluid: and (4) mixing the oil-based mixed solution and the water-based mixed solution obtained in the steps (3) and (4), and stirring at the rotating speed of 720r/min until the liquid is uniform and transparent to obtain the high-quality micro-emulsified cutting fluid for metal processing.
Preferably, the strong acid solution in the step (1) is prepared by mixing concentrated sulfuric acid with a mass concentration of 98% and concentrated nitric acid with a mass concentration of 50-62% in a volume ratio of 3: 1 are mixed.
Preferably, the nano MoS in the step (2)2The particle size is 40-60 nm.
Preferably, the biodegradable base oil in step (3) is prepared from palm oil, rapeseed oil and soybean oil in a volume ratio of 1: 2-3: 3-6.
Preferably, the compound surfactant in the step (3) is prepared from a nonionic surfactant and an anionic surfactant according to the mass fraction of 5-6: 2.
Preferably, the use method of the high-quality micro-emulsified cutting fluid for metal processing comprises the following steps: mixing the raw materials with deionized water according to the proportion of 1: diluting the mixture by 10-30 volumes for use.
Through a large number of experimental researches, the cutting fluid disclosed by the invention discovers that the surface of the carbon nano-tube is functionalized by using strong acid, and then the carbon nano-tube with the functionalized surface is cut off and shortened by using mechanical ball milling, so that the carbon nano-tube can be uniformly dispersed in matrix fluid without agglomeration. Then putting the cut and shortened carbon nano-tube into glycol solution, and adding nano MoS2Ultrasonic treating the powder, proper dimethyl sulfate and sodium dodecyl sulfate, and attaching a layer of nano MoS to the carbon nanotubes after cutting and shortening2Namely, the two forms a physical coating, and forms nano MoS by taking the carbon nano-tube as the axis2The particles are of a tubular structure of an outer layer, and the nano tubular structure has toughness and an extremely low friction coefficient. In addition, as the thermal conductivity of the carbon nanotubes is related to the aspect ratio of the carbon nanotubes, the aspect ratio is controlled within a proper range through truncation and shortening, when the carbon nanotubes are in a high-temperature environment, the collision probability between the truncated and shortened carbon nanotubes is increased, namely the heat conduction efficiency is increased, so that MoS (MoS)2The nano-tubular structure composed of/CNTs has higher heat-conducting property and thermal stability, and MoS is also increased2High temperature stability of (1), effective avoidance of MoS2Is carbonized at high temperature. Finally, the MoS prepared by the invention2The CNTs nano tube-shaped object is put into the water-based mixed liquid to be uniformly dispersed, and then the water-based mixed liquid and the emulsified oil-based mixed liquid are uniformly stirred to obtain the micro-emulsified cutting fluid, so that the micro-emulsified cutting fluid has high cooling property of the water-based cutting fluid and lubricating property of the oil-based cutting fluid, and the prepared cutting fluid is improved in aspects of rust prevention, cleaning and the like by various additives.
Has the advantages that: compared with the existing cutting fluid, the invention adds the prepared MoS into the water-based mixed solution2CNTs nanotube-like structure, which can be used to enhance the micro-scale particles of the present invention by virtue of its strong lubricity and higher thermal conductivityThe lubricating property and cooling property of the emulsified cutting fluid are MoS even at a high temperature of 650-1200 DEG C2The lubricating property can not be lost due to carbonization, and the service life reduction of the cutter due to the influence of high temperature in the metal cutting process or the poor cutting surface effect of the workpiece due to the loss of the high-temperature lubricating property can be effectively avoided; in addition, the oil base of the cutting fluid is biodegradable base oil, and various additives also have no pollution to the environment, so that the cutting fluid responds to the current green and environment-friendly mouth marks.
Detailed Description
Example 1:
a high-quality micro-emulsified cutting fluid for metal processing comprises the following steps:
(1) carbon nanotube strong acid oxidation treatment: weighing 14kg of carbon nanotubes, then putting the carbon nanotubes into a strong acid solution with the weight of 110kg, heating to 90 ℃, stopping heating after 35min of treatment, self-heating and cooling to 25 ℃, taking out, washing with deionized water to be neutral, and drying for later use;
(2) ball-milling the carbon nano-tubes: putting the carbon nano-tubes obtained in the step (1) into a ball mill, ball-milling for 2.5h at the rotating speed of 1200r/min, then putting the ball-milled carbon nano-tubes into glycol with the weight of 70kg, and then adding 22kg of nano MoS22.6kg of dimethyl sulfate and 1.4kg of sodium dodecyl sulfate are evenly stirred and are subjected to ultrasonic treatment for 25min for later use, and the ultrasonic frequency is 280 kHz;
(3) preparing oil-based mixed liquid: taking 26kg of biodegradable base oil, adding 7kg of OP-10 NP emulsifier into the biodegradable base oil, uniformly stirring, adding 3kg of triethanolamine, 3kg of polyethylene wax, 3kg of compound surfactant, 2kg of T701 barium petroleum sulfonate antirust agent and 1kg of polyether defoamer, and uniformly stirring for later use;
(4) preparing a water-based mixed solution: taking 130L of deionized water, adding 32kg of the carbon nanotubes obtained in the step (2), 8kg of glycerol and 3kg of propylene glycol, and uniformly stirring for later use;
(5) preparing a micro-emulsion cutting fluid: and (4) mixing the oil-based mixed solution and the water-based mixed solution obtained in the steps (3) and (4), and stirring at the rotating speed of 720r/min until the liquid is uniform and transparent to obtain the high-quality micro-emulsified cutting fluid for metal processing.
In this embodiment, the strong acid solution is prepared from concentrated sulfuric acid with a mass concentration of 98% and concentrated nitric acid with a mass concentration of 56% in a volume ratio of 3: 1, mixing; nano MoS in the present example2The particle size is 40-60 nm; in this example, the biodegradable base oil was prepared from palm oil, rapeseed oil, and soybean oil in a volume ratio of 1: 2: 4, mixing; the compound surfactant in the embodiment is prepared from tween 20 and fatty alcohol ether sodium sulfate according to the mass fraction of 5: 2.
Example 2:
a high-quality micro-emulsified cutting fluid for metal processing comprises the following steps:
(1) carbon nanotube strong acid oxidation treatment: weighing 12kg of carbon nanotubes, then putting the carbon nanotubes into a strong acid solution with the weight of 100kg, heating to 90 ℃, stopping heating after treating for 30min, self-heating and cooling to 25 ℃, taking out, washing with deionized water to be neutral, and drying for later use;
(2) ball-milling the carbon nano-tubes: putting the carbon nano-tubes obtained in the step (1) into a ball mill, ball-milling for 2h at the rotating speed of 1200r/min, then putting the ball-milled carbon nano-tubes into glycol with the weight of 70kg, and then adding 24kg of nano MoS22.6kg of dimethyl sulfate and 1.4kg of sodium dodecyl sulfate are evenly stirred and are subjected to ultrasonic treatment for 25min for later use, and the ultrasonic frequency is 320 kHz;
(3) preparing oil-based mixed liquid: taking 25kg of biodegradable base oil, adding 7kg of OP-10 NP emulsifier into the biodegradable base oil, uniformly stirring, adding 3kg of triethanolamine, 3kg of polyethylene wax, 3kg of compound surfactant, 2kg of T701 barium petroleum sulfonate antirust agent and 1kg of polyether defoamer, and uniformly stirring for later use;
(4) preparing a water-based mixed solution: taking 135L of deionized water, adding 28kg of the carbon nanotubes obtained in the step (2), 8kg of glycerol and 3kg of propylene glycol, and uniformly stirring for later use;
(5) preparing a micro-emulsion cutting fluid: and (4) mixing the oil-based mixed solution and the water-based mixed solution obtained in the steps (3) and (4), and stirring at the rotating speed of 720r/min until the liquid is uniform and transparent to obtain the high-quality micro-emulsified cutting fluid for metal processing.
In this embodiment, the strong acid solution is prepared from concentrated sulfuric acid with a mass concentration of 98% and concentrated nitric acid with a mass concentration of 56% in a volume ratio of 3: 1, mixing; nano MoS in the present example2The particle size is 40-60 nm; in this example, the biodegradable base oil was prepared from palm oil, rapeseed oil, and soybean oil in a volume ratio of 1: 3: 4, mixing; the compound surfactant in the embodiment is prepared from tween 20 and fatty alcohol ether sodium sulfate according to the mass fraction of 5: 2.
Example 3:
a high-quality micro-emulsified cutting fluid for metal processing comprises the following steps:
(1) carbon nanotube strong acid oxidation treatment: weighing 15kg of carbon nanotubes, then putting the carbon nanotubes into a strong acid solution with the weight of 120kg, heating to 90 ℃, stopping heating after 35min of treatment, self-heating and cooling to 25 ℃, taking out, washing with deionized water to be neutral, and drying for later use;
(2) ball-milling the carbon nano-tubes: putting the carbon nano-tubes obtained in the step (1) into a ball mill, ball-milling for 3h at the rotating speed of 1200r/min, then putting the ball-milled carbon nano-tubes into glycol with the weight of 80kg, and then adding 20kg of nano MoS22.5kg of dimethyl sulfate and 1.8kg of sodium dodecyl sulfate are evenly stirred and are subjected to ultrasonic treatment for 25min for later use, and the ultrasonic frequency is 240 kHz;
(3) preparing oil-based mixed liquid: taking 26kg of biodegradable base oil, adding 8kg of OP-10 NP emulsifier into the biodegradable base oil, uniformly stirring, adding 4kg of triethanolamine, 4kg of polyethylene wax, 3kg of compound surfactant, 2kg of T701 barium petroleum sulfonate antirust agent and 1kg of polyether defoamer, and uniformly stirring for later use;
(4) preparing a water-based mixed solution: taking 130L of deionized water, adding 26kg of the carbon nano-tube obtained in the step (2), 6kg of glycerol and 5kg of propylene glycol, and uniformly stirring for later use;
(5) preparing a micro-emulsion cutting fluid: and (4) mixing the oil-based mixed solution and the water-based mixed solution obtained in the steps (3) and (4), and stirring at the rotating speed of 720r/min until the liquid is uniform and transparent to obtain the high-quality micro-emulsified cutting fluid for metal processing.
In this embodiment, the strong acid solution is prepared from concentrated sulfuric acid with a mass concentration of 98% and concentrated nitric acid with a mass concentration of 62% in a volume ratio of 3: 1, mixing; nano MoS in the present example2The particle size is 40-60 nm; in this example, the biodegradable base oil was prepared from palm oil, rapeseed oil, and soybean oil in a volume ratio of 1: 2: 6, mixing; the compound surfactant in the embodiment is prepared from tween 20 and fatty alcohol ether sodium sulfate according to the mass fraction of 5: 2.
Example 4:
a high-quality micro-emulsified cutting fluid for metal processing comprises the following steps:
(1) carbon nanotube strong acid oxidation treatment: weighing 12kg of carbon nanotubes, then putting the carbon nanotubes into a strong acid solution with the weight of 110kg, heating to 90 ℃, stopping heating after 35min of treatment, self-heating and cooling to 25 ℃, taking out, washing with deionized water to be neutral, and drying for later use;
(2) ball-milling the carbon nano-tubes: putting the carbon nano-tubes obtained in the step (1) into a ball mill, ball-milling for 2.5h at the rotating speed of 1200r/min, then putting the ball-milled carbon nano-tubes into glycol with the weight of 70kg, and then adding 24kg of nano MoS23.0kg of dimethyl sulfate and 2.0kg of sodium dodecyl sulfate are evenly stirred and are subjected to ultrasonic treatment for 25min for later use, and the ultrasonic frequency is 360 kHz;
(3) preparing oil-based mixed liquid: taking 26kg of biodegradable base oil, adding 7kg of OP-10 NP emulsifier into the biodegradable base oil, uniformly stirring, adding 3kg of triethanolamine, 3kg of polyethylene wax, 3kg of compound surfactant, 2kg of T701 barium petroleum sulfonate antirust agent and 1kg of polyether defoamer, and uniformly stirring for later use;
(4) preparing a water-based mixed solution: taking 130L of deionized water, adding 32kg of the carbon nanotubes obtained in the step (2), 8kg of glycerol and 3kg of propylene glycol, and uniformly stirring for later use;
(5) preparing a micro-emulsion cutting fluid: and (4) mixing the oil-based mixed solution and the water-based mixed solution obtained in the steps (3) and (4), and stirring at the rotating speed of 720r/min until the liquid is uniform and transparent to obtain the high-quality micro-emulsified cutting fluid for metal processing.
In this embodiment, the strong acid solution is prepared from concentrated sulfuric acid with a mass concentration of 98% and concentrated nitric acid with a mass concentration of 56% in a volume ratio of 3: 1, mixing; nano MoS in the present example2The particle size is 40-60 nm; in this example, the biodegradable base oil was prepared from palm oil, rapeseed oil, and soybean oil in a volume ratio of 1: 2: 4, mixing; the compound surfactant in the embodiment is prepared from tween 20 and fatty alcohol ether sodium sulfate according to the mass fraction of 5: 2.
Comparative group 1:
comparative example 1 compared to example 1, the process steps were the same except that step (1) was omitted.
Comparative group 2:
comparative example 2 compared with example 1, the method steps were the same except that the carbon nanotube ball milling process in step (2) was omitted.
Comparative group 3:
comparative example 3 compared to example 1, the steps of the method were the same except that step (1) and step (2) were omitted and carbon nanotubes of the same mass were added to deionized water in step (4).
Comparative group 4:
comparative example 4 compared to example 1, the steps (1) and (2) were omitted, and the same amount of nano MoS was added to the biodegradable base oil in step (3), except that the method steps were the same.
Control group: a semi-synthetic cutting fluid prepared by Shenzhen Shangde lubricating oil science and technology Limited.
To compare the beneficial effects of the cooling performance of the microemulsified cutting fluid prepared by the present invention, the cooling performance was tested and the data is recorded as the following table 1:
table 1:
Figure 224713DEST_PATH_IMAGE002
as can be seen from Table 1, the cooling effect of the cutting fluid prepared by the method is improved to a certain extent compared with that of a control group and a comparison group.
In order to compare the beneficial effects of the high-temperature lubricity of the microemulsified cutting fluid prepared by the invention, the maximum non-seize biting load at normal temperature and the maximum non-seize biting load at 800 ℃ of the cutting fluid are measured according to the measuring method of G3142-82, and the data are recorded as shown in Table 2:
table 2:
as can be seen from Table 2, the maximum non-seizing load of the cutting fluid prepared according to the present invention was large at both normal temperature and high temperature of 800 ℃ and did not decrease with temperature increase, and thus it was found that the cutting fluid of the present invention had excellent high-temperature lubricity.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (6)

1. A high-quality microemulsion cutting fluid for metal processing is characterized by comprising the following steps:
(1) carbon nanotube strong acid oxidation treatment: weighing 12-15 parts by weight of carbon nanotubes, then putting the carbon nanotubes into a strong acid solution with the weight 6-10 times of that of the carbon nanotubes, heating the carbon nanotubes to 90 ℃, treating the carbon nanotubes for 30-35 min, stopping heating, self-heating and cooling the carbon nanotubes to 25 ℃, taking out the carbon nanotubes, washing the carbon nanotubes with deionized water to be neutral, and drying the carbon nanotubes for later use;
(2) ball-milling the carbon nano-tubes: putting the carbon nanotubes obtained in the step (1) into a ball mill, ball-milling at a rotating speed of 1200r/min for 2-3 h, putting the ball-milled carbon nanotubes into glycol with the weight 4-6 times of that of the carbon nanotubes, and adding 20-24 parts of nano MoS2Uniformly stirring 2-3 parts of dimethyl sulfate and 1-2 parts of sodium dodecyl sulfate, and carrying out ultrasonic treatment for 20-25 min for later use, wherein the ultrasonic frequency is 240-360 kHz;
(3) preparing oil-based mixed liquid: taking 25-28 parts by weight of biodegradable base oil, adding 6-8 parts of emulsifier, uniformly stirring, adding 3-4 parts of triethanolamine, 2-4 parts of polyethylene wax, 2-3 parts of compound surfactant, 1-3 parts of antirust agent and 1-2 parts of defoaming agent, and uniformly stirring for later use;
(4) preparing a water-based mixed solution: taking 110-135 parts by weight of deionized water, adding 26-34 parts of the carbon nanotubes obtained in the step (2), 6-9 parts of glycerol and 3-5 parts of propylene glycol, and uniformly stirring for later use;
(5) preparing a micro-emulsion cutting fluid: and (4) mixing the oil-based mixed solution and the water-based mixed solution obtained in the steps (3) and (4), and stirring at the rotating speed of 720r/min until the liquid is uniform and transparent to obtain the high-quality micro-emulsified cutting fluid for metal processing.
2. The high-quality microemulsion cutting fluid for metal processing according to claim 1, characterized in that: the strong acid solution in the step (1) is prepared from concentrated sulfuric acid with the mass concentration of 98% and concentrated nitric acid with the mass concentration of 50-62% according to the volume ratio of 3: 1 are mixed.
3. The high-quality microemulsion cutting fluid for metal processing according to claim 1, characterized in that: the nano MoS in the step (2)2The particle size is 40-60 nm.
4. The high-quality microemulsion cutting fluid for metal processing according to claim 1, characterized in that: the biodegradable base oil in the step (3) is prepared from palm oil, rapeseed oil and soybean oil according to the volume ratio of 1: 2-3: 3-6.
5. The high-quality microemulsion cutting fluid for metal processing according to claim 1, characterized in that: the compound surfactant in the step (3) is prepared from a nonionic surfactant and an anionic surfactant according to the mass fraction of 5-6: 2.
6. The high-quality microemulsion cutting fluid for metal processing according to claim 1, characterized in that: the use method of the high-quality microemulsion cutting fluid for metal processing comprises the following steps: mixing the raw materials with deionized water according to the proportion of 1: diluting the mixture by 10-30 volumes for use.
CN201910990884.2A 2019-10-18 2019-10-18 High-quality micro-emulsified cutting fluid for metal processing Withdrawn CN110747036A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112143541A (en) * 2020-10-12 2020-12-29 湘潭大学 Molybdenum disulfide and tungsten disulfide mixed nano lubricating oil additive and application thereof
CN113652292A (en) * 2021-08-13 2021-11-16 四川欧力泰尔新材料有限公司 Preparation method of microemulsion cutting fluid for machining aluminum alloy of aircraft engine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112143541A (en) * 2020-10-12 2020-12-29 湘潭大学 Molybdenum disulfide and tungsten disulfide mixed nano lubricating oil additive and application thereof
CN113652292A (en) * 2021-08-13 2021-11-16 四川欧力泰尔新材料有限公司 Preparation method of microemulsion cutting fluid for machining aluminum alloy of aircraft engine

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