CN115651749A - Environment-friendly cutting fluid and preparation method thereof - Google Patents
Environment-friendly cutting fluid and preparation method thereof Download PDFInfo
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- CN115651749A CN115651749A CN202211312162.XA CN202211312162A CN115651749A CN 115651749 A CN115651749 A CN 115651749A CN 202211312162 A CN202211312162 A CN 202211312162A CN 115651749 A CN115651749 A CN 115651749A
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- 239000002173 cutting fluid Substances 0.000 title claims abstract description 53
- 238000002360 preparation method Methods 0.000 title abstract description 11
- CXMXRPHRNRROMY-UHFFFAOYSA-N sebacic acid Chemical compound OC(=O)CCCCCCCCC(O)=O CXMXRPHRNRROMY-UHFFFAOYSA-N 0.000 claims abstract description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 36
- 239000003995 emulsifying agent Substances 0.000 claims abstract description 23
- 238000001816 cooling Methods 0.000 claims abstract description 18
- MEFBJEMVZONFCJ-UHFFFAOYSA-N molybdate Chemical compound [O-][Mo]([O-])(=O)=O MEFBJEMVZONFCJ-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000004094 surface-active agent Substances 0.000 claims abstract description 18
- 239000008367 deionised water Substances 0.000 claims abstract description 15
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 15
- BTBUEUYNUDRHOZ-UHFFFAOYSA-N Borate Chemical compound [O-]B([O-])[O-] BTBUEUYNUDRHOZ-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000003756 stirring Methods 0.000 claims description 23
- 239000002994 raw material Substances 0.000 claims description 21
- 238000006243 chemical reaction Methods 0.000 claims description 20
- 239000000463 material Substances 0.000 claims description 20
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 18
- -1 borate ester Chemical class 0.000 claims description 18
- 239000004327 boric acid Substances 0.000 claims description 17
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 16
- 150000001412 amines Chemical class 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 10
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 9
- 239000003208 petroleum Substances 0.000 claims description 9
- 229910052757 nitrogen Inorganic materials 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 7
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 6
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 claims description 6
- 229940043237 diethanolamine Drugs 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 5
- 239000011684 sodium molybdate Substances 0.000 claims description 5
- 235000015393 sodium molybdate Nutrition 0.000 claims description 5
- TVXXNOYZHKPKGW-UHFFFAOYSA-N sodium molybdate (anhydrous) Chemical group [Na+].[Na+].[O-][Mo]([O-])(=O)=O TVXXNOYZHKPKGW-UHFFFAOYSA-N 0.000 claims description 5
- 238000001308 synthesis method Methods 0.000 claims description 5
- 238000005303 weighing Methods 0.000 claims description 5
- 150000001408 amides Chemical class 0.000 claims description 3
- 238000004821 distillation Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 238000004321 preservation Methods 0.000 claims description 3
- 238000010992 reflux Methods 0.000 claims description 3
- 239000002904 solvent Substances 0.000 claims description 3
- 230000001050 lubricating effect Effects 0.000 abstract description 24
- 238000004140 cleaning Methods 0.000 abstract description 9
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 11
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 238000012545 processing Methods 0.000 description 5
- 239000000654 additive Substances 0.000 description 4
- 239000013556 antirust agent Substances 0.000 description 4
- 238000011161 development Methods 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 230000000844 anti-bacterial effect Effects 0.000 description 3
- 150000007942 carboxylates Chemical class 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000013329 compounding Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 230000002401 inhibitory effect Effects 0.000 description 3
- 239000000314 lubricant Substances 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 230000002265 prevention Effects 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000003963 antioxidant agent Substances 0.000 description 2
- 230000003078 antioxidant effect Effects 0.000 description 2
- 229910052796 boron Inorganic materials 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000839 emulsion Substances 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000008233 hard water Substances 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 229920001732 Lignosulfonate Polymers 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- 206010040880 Skin irritation Diseases 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000003945 anionic surfactant Substances 0.000 description 1
- 230000002421 anti-septic effect Effects 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 239000003899 bactericide agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004332 deodorization Methods 0.000 description 1
- 150000001991 dicarboxylic acids Chemical class 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- PWWSSIYVTQUJQQ-UHFFFAOYSA-N distearyl thiodipropionate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)CCSCCC(=O)OCCCCCCCCCCCCCCCCCC PWWSSIYVTQUJQQ-UHFFFAOYSA-N 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 238000004945 emulsification Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- VKYKSIONXSXAKP-UHFFFAOYSA-N hexamethylenetetramine Chemical compound C1N(C2)CN3CN1CN2C3 VKYKSIONXSXAKP-UHFFFAOYSA-N 0.000 description 1
- 230000003301 hydrolyzing effect Effects 0.000 description 1
- 239000010722 industrial gear oil Substances 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 238000005555 metalworking Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 239000010688 mineral lubricating oil Substances 0.000 description 1
- 239000002736 nonionic surfactant Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229940051841 polyoxyethylene ether Drugs 0.000 description 1
- 229920000056 polyoxyethylene ether Polymers 0.000 description 1
- 230000003405 preventing effect Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 230000036556 skin irritation Effects 0.000 description 1
- 231100000475 skin irritation Toxicity 0.000 description 1
- 235000010265 sodium sulphite Nutrition 0.000 description 1
- KQSJSRIUULBTSE-UHFFFAOYSA-M sodium;3-(3-ethylcyclopentyl)propanoate Chemical compound [Na+].CCC1CCC(CCC([O-])=O)C1 KQSJSRIUULBTSE-UHFFFAOYSA-M 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Landscapes
- Lubricants (AREA)
Abstract
The invention provides an environment-friendly cutting fluid and a preparation method thereof, belonging to the technical field of cutting fluids. The environment-friendly cutting fluid comprises the following components in parts by mass: 16-18 parts of borate, 4-6 parts of sebacic acid diethanolamide, 1-3 parts of surfactant, 3-5 parts of emulsifier, 4-7 parts of molybdate and 150-200 parts of deionized water. The invention improves the lubricating and cooling performance of the cutting fluid by adding molybdate, and further improves the stability and the dispersibility of the system by adding the emulsifier OP-10 and the surfactant DOWFAX2A1. The environment-friendly cutting fluid provided by the invention also has excellent cooling, cleaning, lubricating and antirust properties.
Description
Technical Field
The invention relates to the technical field of cutting fluid, and particularly relates to environment-friendly cutting fluid and a preparation method thereof.
Background
The cutting fluid is an industrial fluid used for cooling and lubricating cutters and workpieces in the processes of cutting, grinding and milling metals, and has the characteristics of good cooling performance, lubricating performance, antirust performance, oil removal and cleaning functions, anticorrosion function and easiness in dilution.
Modern machining develops towards high speed, strong force and precision, and the development of hard-to-machine materials such as super-hard materials, super-strength materials and the like also increases the difficulty of cutting machining increasingly. The reasons for both of these two factors are that the friction force and frictional heat during cutting are greatly increased, which requires the metal working fluid to have better lubrication, cooling, cleaning, and rust prevention properties in order to obtain an ideal working surface. The traditional mineral lubricating oil has excellent lubricating and antirust performances, but has poor cooling and cleaning performances and serious resource waste; the excellent cooling and cleaning performances of the emulsion and the water-based cutting fluid accord with the theme of green manufacture, and the emulsion and the water-based cutting fluid are the main development direction of the cutting fluid. However, two major difficulties faced in improving the quality of the current water-based cutting fluid products are the lubricating property and the rust-proof property, so that the development of the water-based cutting fluid products with excellent cooling, cleaning, lubricating and rust-proof properties becomes the development direction for improving the processing performance in the machining at home and abroad.
The patent with the application number of CN201410304822.9 discloses an anticorrosive and antioxidant water-based multifunctional cutting fluid and a preparation method thereof, wherein the cutting fluid is prepared from the following raw materials in parts by weight: lignosulfonate, sodium sulfite, fatty alcohol-polyoxyethylene ether, mechanical oil, silicone resin, sodium naphthenate, urotropine, no. 200 industrial gear oil, an antioxidant DSTP, an auxiliary agent and deionized water. Although the patent can improve the corrosion resistance and oxidation resistance of the cutting fluid to a certain extent, the lubricity, rust resistance, film forming property, abrasion resistance and service life of the cutting fluid need to be further improved.
Disclosure of Invention
In view of the above, the invention provides an environment-friendly cutting fluid and a preparation method thereof, and the environment-friendly cutting fluid provided by the invention has excellent cooling, cleaning, lubricating and antirust properties, and is more economical and environment-friendly.
The invention provides an environment-friendly cutting fluid which comprises the following raw materials in parts by weight: 16-18 parts of borate, 4-6 parts of sebacic acid diethanolamide, 1-3 parts of surfactant, 3-5 parts of emulsifier, 4-7 parts of molybdate and 150-200 parts of deionized water.
Preferably, the synthesis method of the borate ester is as follows: adding triethanolamine and boric acid into a three-neck flask provided with a thermometer, a water separator and an electric stirrer according to the molar ratio of 3:1, adding petroleum ether as a solvent, and controlling the reaction temperature to be 70-90 ℃; water generated in the reaction process is gradually evaporated out in the form of azeotrope with petroleum ether through a water-separating reflux device; after 4h of reaction, the reduced pressure distillation is continued until the remaining petroleum ether and water are removed to obtain the borate.
Preferably, the synthesis method of the sebacic acid diethanolamide comprises the following steps: adding sebacic acid and diethanol amine into a four-neck flask provided with a thermometer, an electric stirrer, a water separator (the other end is connected with a condensation pipe) and a nitrogen introducing pipe according to the molar ratio of 1.5, stirring under the protection of nitrogen, controlling the reaction temperature to be 135-180 ℃, reacting for 3-4 hours, measuring the content of free amine in the product until the amine value is unchanged, reducing the reaction temperature to be 100-120 ℃, adding the rest diethanol amine and 1% of potassium hydroxide of the total weight of the raw materials, reacting for 3-4 hours under the condition of heat preservation, and measuring the content of the free amine to be an end point to obtain pale yellow viscous liquid, namely sebacic diethanol amide.
Preferably, the surfactant is DOWFAX2A1.
Preferably, the emulsifier is emulsifier OP-10.
Preferably, the molybdate is sodium molybdate.
The functions of the raw materials in the invention are as follows:
the emulsifier OP-10 is alkylphenol ethoxylates, belongs to a nonionic surfactant, has excellent level dyeing, emulsification, wetting and diffusion properties, and simultaneously has good oil stain removal capability, so that residual oil stains on the surface of a metal workpiece can be effectively removed, and the processing performance of the metal surface in the processing process is further ensured.
The surfactant DOWFAX2A1 is a high-performance anionic surfactant, has the characteristics of strong adsorption capacity, large dispersing force, strong connecting force and the like, and still can show excellent stability under a strong shearing condition.
The molybdate can improve the lubricating and cooling performance of the cutting fluid, and is economical and environment-friendly.
The lubricating and antirust agent has the following action principle in the invention: the water-based cutting fluid contains a large amount of water, has good cooling performance, but has relatively poor lubricating property, and is easy to cause the corrosion of processing equipment and workpieces in the using process. Therefore, it is particularly important to improve the lubricating and rust preventing properties of the aqueous cutting fluid. The lubrication and the rust prevention performance of the cutting fluid depend on the structural characteristics and the action mechanism of the lubricant and the rust inhibitor.
Lubricity additives and rust-inhibiting additives in the presence of functional groups (polar groups) such as-OH, -COOH, -COOR, -CONH 2 、－NH 2 And the action mechanism (adsorption on the metal surface to form a film) has commonality, thus being easy to form competitive adsorption on the friction surface to influence the respective performances, so that a chemical substance with lubricating performance and antirust performance is selected as the lubricating antirust agent. However, studies have shown that the lubricating and rust inhibiting properties are not satisfactory when the lubricating and rust inhibiting agent is used alone. In order to make the cutting fluid have good comprehensive performance, a plurality of chemical substances are added at the same time for compounding. However, the cost of the product is increased by compounding excessive additives, and the determination of the formula of the cutting fluid is difficult due to the complexity of each additive, so 2 chemical substances which have the advantages of rust resistance, lubricity, water solubility and stable performance are found in the invention to be compounded to obtain the lubricating and rust-preventing agent.
The preparation process of the borate is simple, the raw materials are easy to obtain, the price is low, and three wastes are basically not generated in the production. Using boric acid and organic alcohol amine (CH) 2 CH 2 O)nNH 2 The (n =1,2,3) synthetic borate contains two extreme pressure active elements of boron and nitrogen, so that a tribochemical reaction occurs on the surface of a friction metal to generate a boundary lubricating film in the boundary lubricating process to play a lubricating role. In addition, the method has the starting point of introducing coordination bonds into boric acid ester molecules so as to reduce the electron deficiency of boron atoms, and the synthesized boric acid ester containing nitrogen and boron coordination bonds has good hydrolytic stability. Unsaturated short-chain dicarboxylic acid has good rust resistance, but poor lubricity and is not resistant to hard water. Therefore, in order to achieve both rust prevention and hard water resistanceSelecting saturated dicarboxylic acid sebacic acid with 10 carbon atoms, and mixing with organic alcohol amine (CH) 2 CH 2 O)nNH 2 (n =1,2,3) reacting carboxylate, and compounding the carboxylate with boric acid ester to form the lubricating and antirust agent. Considering that n =1,2 is strong in odor of organic amine and strong in skin irritation after reaction, n =3 is used. Then boric acid and triethanolamine are synthesized into boric acid ester, sebacic acid and triethanolamine are synthesized into carboxylate, and the two are compounded into the lubricating antirust agent.
In addition, the boric acid ester has higher antibacterial and bactericidal capabilities, so the boric acid ester generated by the reaction of boric acid and organic alcohol amine is selected as the antiseptic bactericide, the effect of one agent with multiple purposes is achieved, and the cost is saved.
The invention also provides a preparation method of the environment-friendly cutting fluid, which comprises the following steps:
(1) Weighing various qualified raw materials according to the raw material proportion in parts by weight for later use;
(2) Uniformly mixing boric acid ester, sebacic acid diethanolamide and a proper amount of deionized water, heating to 70-95 ℃, and stirring for reaction for 30-40 minutes to obtain a mixed material A;
(3) Then adding an emulsifier and molybdate, stirring uniformly, slowly heating to 55-65 ℃, and preserving heat for 1-1.5 hours to obtain a mixed material B;
(4) And cooling the mixed material B to 20-25 ℃, adding a surfactant, and uniformly stirring the mixture along the same stirring direction to obtain the environment-friendly cutting fluid.
Compared with the prior art, the invention has the following beneficial effects: the cutting fluid provided by the invention has excellent cooling, cleaning, lubricating and antirust performances, and is more economic and environment-friendly. The invention also has good permeability and cleaning property, and has the advantages of high cooling speed, corrosion resistance, deodorization, easy storage, simple operation and low cost, and is suitable for processing various metals.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The test methods or test methods described in the following examples are conventional methods unless otherwise specified; the starting materials and auxiliaries are, unless otherwise specified, obtained from customary commercial sources or prepared in customary manner.
The synthesis of the boronic esters employed in the following examples 1-3 is as follows: adding triethanolamine and boric acid into a three-neck flask provided with a thermometer, a water separator and an electric stirrer according to the molar ratio of 3:1, adding petroleum ether as a solvent, and controlling the reaction temperature to be 70-90 ℃; water generated in the reaction process is gradually evaporated out in the form of azeotrope with petroleum ether through a water-separating reflux device; after 4h of reaction, the reduced pressure distillation is continued until the remaining petroleum ether and water are removed to obtain the borate.
The synthesis method of sebacic acid diethanolamide comprises the following steps: adding sebacic acid and diethanol amine into a four-neck flask provided with a thermometer, an electric stirrer, a water separator (the other end is connected with a condensation pipe) and a nitrogen introducing pipe according to the molar ratio of 1.5, stirring under the protection of nitrogen, controlling the reaction temperature to be 135-180 ℃, reacting for 3-4 hours, measuring the content of free amine in the product until the amine value is unchanged, reducing the reaction temperature to be 100-120 ℃, adding the rest diethanol amine and 1% of potassium hydroxide of the total weight of the raw materials, reacting for 3-4 hours under the condition of heat preservation, and measuring the content of the free amine to be an end point to obtain pale yellow viscous liquid, namely sebacic diethanol amide.
Example 1
The environment-friendly cutting fluid comprises the following raw materials in parts by weight: 16 parts of borate, 4 parts of sebacic acid diethanolamide, 1 part of surfactant, 3 parts of emulsifier, 4 parts of molybdate and 150 parts of deionized water. Wherein the surfactant adopts DOWFAX2A1; the emulsifier adopts emulsifier OP-10; sodium molybdate is used as molybdate.
The preparation method of the environment-friendly cutting fluid comprises the following steps:
(1) Weighing various qualified raw materials according to the raw material proportion in parts by weight for later use;
(2) Uniformly mixing boric acid ester, sebacic acid diethanolamide and 1/3 of deionized water, heating to 70 ℃, and stirring for reacting for 30 minutes to obtain a mixed material A;
(3) Then adding an emulsifier, molybdate and the rest deionized water, stirring uniformly, slowly heating to 55 ℃, and preserving heat for 1 hour to obtain a mixed material B;
(4) And cooling the mixed material B to 20 ℃, adding a surfactant, and uniformly stirring the mixed material B along the same stirring direction to obtain the environment-friendly cutting fluid.
Example 2
The environment-friendly cutting fluid comprises the following raw materials in parts by weight: 17 parts of borate, 5 parts of sebacic acid diethanolamide, 2 parts of surfactant, 4 parts of emulsifier, 6 parts of molybdate and 180 parts of deionized water. Wherein the surfactant adopts DOWFAX2A1; the emulsifier adopts emulsifier OP-10; sodium molybdate is used as molybdate.
The preparation method of the environment-friendly cutting fluid comprises the following steps:
(1) Weighing various qualified raw materials according to the raw material proportion in parts by weight for later use;
(2) Uniformly mixing boric acid ester, sebacic acid diethanolamide and 1/3 of deionized water, heating to 85 ℃, and stirring for reacting for 35 minutes to obtain a mixed material A;
(3) Then adding an emulsifier, molybdate and the rest deionized water, stirring uniformly, slowly heating to 60 ℃, and preserving heat for 1.2 hours to obtain a mixed material B;
(4) And cooling the mixed material B to 23 ℃, adding a surfactant, and uniformly stirring the mixed material B along the same stirring direction to obtain the environment-friendly cutting fluid.
Example 3
The environment-friendly cutting fluid comprises the following raw materials in parts by weight: 18 parts of borate, 6 parts of sebacic acid diethanolamide, 3 parts of surfactant, 5 parts of emulsifier, 7 parts of molybdate and 200 parts of deionized water. Wherein the surfactant adopts DOWFAX2A1; the emulsifier adopts emulsifier OP-10; sodium molybdate is used as molybdate.
The preparation method of the environment-friendly cutting fluid comprises the following steps:
(1) Weighing various qualified raw materials according to the raw material proportion in parts by weight for later use;
(2) Uniformly mixing boric acid ester, sebacic acid diethanolamide and 1/3 of deionized water, heating to 95 ℃, and stirring for reacting for 40 minutes to obtain a mixed material A;
(3) Then adding an emulsifier, molybdate and the rest deionized water, stirring uniformly, slowly heating to 65 ℃, and preserving heat for 1.5 hours to obtain a mixed material B;
(4) And cooling the mixed material B to 25 ℃, adding a surfactant, and uniformly stirring the mixture along the same stirring direction to obtain the environment-friendly cutting fluid.
Tests prove that the cutting fluid prepared in the embodiments 1-3 of the invention can meet the following technical requirements:
the physicochemical properties of the cutting fluids prepared in examples 1 to 3 were evaluated according to the national standard GB/T6144-85, and the results showed that the environment-friendly cutting fluids prepared by the present invention all meet the national standard. And the test results of the comprehensive lubricating property and the antirust property show that when the using concentration of the cutting fluid is 5%, the comprehensive performance of the cutting fluid is optimal, and the technical effect obtained by the invention cannot be achieved when the concentration is higher or lower than the above concentration.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (7)
1. The environment-friendly cutting fluid is characterized by comprising the following raw materials in parts by weight: 16-18 parts of borate, 4-6 parts of sebacic acid diethanolamide, 1-3 parts of surfactant, 3-5 parts of emulsifier, 4-7 parts of molybdate and 150-200 parts of deionized water.
2. The environment-friendly cutting fluid as claimed in claim 1, wherein the synthesis method of the borate ester is as follows: adding triethanolamine and boric acid into a three-neck flask provided with a thermometer, a water separator and an electric stirrer according to the molar ratio of 3:1, adding petroleum ether as a solvent, and controlling the reaction temperature to be 70-90 ℃; water generated in the reaction process is gradually evaporated out in the form of azeotrope with petroleum ether through a water-separating reflux device; after 4h of reaction, the reduced pressure distillation is continued until the remaining petroleum ether and water are removed to obtain the borate.
3. The environment-friendly cutting fluid as claimed in claim 1, wherein the synthesis method of sebacic acid diethanolamide is as follows: adding sebacic acid and diethanol amine into a four-neck flask which is provided with a thermometer, an electric stirrer, a water separator and a condenser connected with the other end of the water separator and a nitrogen inlet pipe according to the proportion of 1.5, stirring under the protection of nitrogen, controlling the reaction temperature to be 135-180 ℃, reacting for 3-4 hours, measuring the content of free amine in the product until the amine value is unchanged, reducing the reaction temperature to be 100-120 ℃, adding the rest diethanol amine and 1% of potassium hydroxide of the total weight of the raw materials, reacting for 3-4 hours under heat preservation, and measuring the content of the free amine to be an end point to obtain pale yellow viscous liquid, namely sebacic diethanol amide.
4. The environment-friendly cutting fluid according to claim 1, wherein the surfactant is DOWFAX2A1.
5. The environment-friendly cutting fluid according to claim 1, wherein the emulsifier is emulsifier OP-10.
6. The environment-friendly cutting fluid as defined in claim 1, wherein the molybdate is sodium molybdate.
7. The method for preparing the environment-friendly cutting fluid according to any one of claims 1 to 6, wherein the method comprises the following steps:
(1) Weighing various qualified raw materials according to the raw material proportion in parts by weight for later use;
(2) Uniformly mixing boric acid ester, sebacic acid diethanolamide and a proper amount of deionized water, heating to 70-95 ℃, and stirring for reaction for 30-40 minutes to obtain a mixed material A;
(3) Then adding an emulsifier and molybdate, uniformly stirring, slowly heating to 55-65 ℃, and preserving heat for 1-1.5 hours to obtain a mixed material B;
(4) And cooling the mixed material B to 20-25 ℃, adding a surfactant, and uniformly stirring the mixture along the same stirring direction to obtain the environment-friendly cutting fluid.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104293471A (en) * | 2014-09-25 | 2015-01-21 | 巢湖广丰金属制品有限公司 | Environment-friendly water-based synthetic metal machining liquid |
| CN106190481A (en) * | 2016-07-13 | 2016-12-07 | 天长市润达金属防锈助剂有限公司 | A kind of magnalium cutting fluid with excellent abrasion resistant extreme-pressure performance |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104293471A (en) * | 2014-09-25 | 2015-01-21 | 巢湖广丰金属制品有限公司 | Environment-friendly water-based synthetic metal machining liquid |
| CN106190481A (en) * | 2016-07-13 | 2016-12-07 | 天长市润达金属防锈助剂有限公司 | A kind of magnalium cutting fluid with excellent abrasion resistant extreme-pressure performance |
Non-Patent Citations (1)
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| 王增品等: "《腐蚀与防护工程》", 30 April 1991, 高等教育出版社, pages: 212 * |
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