Environment-friendly cutting oil and preparation method thereof

Abstract

The invention discloses environment-friendly cutting oil which comprises the following raw materials in parts by weight: 50-60 parts of hydrogenated vegetable oil, 10-20 parts of naphthenic oil, 8-12 parts of synthetic ester, 6-8 parts of a modified antiwear agent, 2-6 parts of a modified solid lubricant, 2-6 parts of lubricating grease, 1-5 parts of a tackifier, 3-5 parts of an antirust agent and 1-2 parts of a bactericide. The environment-friendly cutting oil disclosed by the invention has the advantages that the storage stability and good anti-corrosion and anti-rust effects are realized, meanwhile, after the sodium nitrite is removed, the preparation process of the environment-friendly cutting oil disclosed by the invention is safe and efficient, safety accidents caused by leakage of the sodium nitrite can be avoided, and the production stability and safety are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of cutting oil, and in particular relates to a preparation method and a preparation device of environmentally friendly cutting oil. Background Art

[0002] Cutting oil is a compound of refined base oil with different proportions of sulfurized lard, sulfurized fatty acid esters, anti-wear agents, lubricants, rust inhibitors, mildew and fungicides, antioxidants, catalytic agents and other additives. Cutting oil has a strong lubricating extreme pressure effect, effectively protects the tool and prolongs its service life, and can obtain extremely high workpiece precision and surface finish. This kind of cutting oil has a wide range of applications and plays an important role in improving machining accuracy and efficiency, extending tool durability, reducing production costs and improving product quality. In order to make the prepared cutting oil have long-term stable performance, it is necessary to use a mixing tank to stir and blend different additives and base oils in sequence during the production process. Most of the products on the market use sodium nitrite to improve the anti-rust performance. Sodium nitrite is a dangerous substance with chemical toxicity, fire risk, explosion possibility and corrosiveness. Sodium nitrite reacts with alcohol amines to generate nitrosamines. Such substances are carcinogens, and workers will have a risk of cancer if they are exposed to them for a long time. Summary of the invention

[0003] In view of this, the present invention provides an environmentally friendly cutting oil and a preparation method thereof to solve the above-mentioned problems.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] The invention discloses an environmentally friendly cutting oil. The raw materials are recorded by weight and include: 50-60 parts of hydrogenated vegetable oil, 10-20 parts of cyclohexane oil, 8-12 parts of synthetic ester, 6-8 parts of modified anti-wear agent, 2-6 parts of modified solid lubricant, 2-6 parts of grease, 1-5 parts of tackifier, 3-5 parts of rust inhibitor and 1-2 parts of bactericide.

[0006] Furthermore, the hydrogenated vegetable oil is at least one of hydrogenated soybean oil, hydrogenated castor oil, hydrogenated sunflower oil and hydrogenated palm oil.

[0007] Furthermore, the synthetic ester is at least one of stearate, trimethylolpropane oleate, palmitate, ethylene glycol dimer linoleate, pentaerythritol tetraoleate, and polypentaerythritol tetraoleate.

[0008] Furthermore, the raw materials of the modified anti-wear agent include, by weight, 20 to 40 parts of fumed silica powder with a particle size of 5 to 40 nm, 10 to 20 parts of whiskers with a diameter of 0.05 to 1 μm, 40 to 80 parts of a sulfuric acid solution with a mass fraction of 60 to 80%, 10 to 20 parts of hydrogen peroxide, 80 to 160 parts of a surface modifier, 5 to 10 parts of hexamethyldisilazane, 10 to 20 parts of ammonia water with a mass fraction of 10 to 20%, and 200 to 400 parts of anhydrous ethanol;

[0009] Wherein, the whiskers are at least one of cellulose whiskers, silicon carbide whiskers, potassium titanate whiskers, and aluminum borate whiskers;

[0010] The surface modifier is at least one of perfluorodecyltrimethoxysilane, vinyltriethoxysilane, n-octyltriethoxysilane and hexadecyltrimethoxysilane;

[0011] The preparation method of the modified antiwear agent comprises the following steps:

[0012] (1) mixing sulfuric acid solution and hydrogen peroxide and stirring evenly, adding fumed silica and whiskers, stirring for 1 to 3 hours in a water bath at 40 to 60° C., filtering, and obtaining an acid-treated anti-wear material;

[0013] (2) adding the acid-treated anti-wear material into deionized water, ultrasonically cleaning it at room temperature for 10 to 40 minutes, filtering it, and drying it with nitrogen to obtain the cleaned anti-wear material;

[0014] (3) adding the cleaned anti-wear material into anhydrous ethanol, stirring and shearing for 10 to 30 minutes under an emulsifier, and then ultrasonically dispersing for 30 to 40 minutes to obtain a dispersion;

[0015] (4) adding a surface modifier and hexamethyldisilazane to the dispersion, slowly adding ammonia water dropwise, and reacting in a water bath at 40 to 80° C. with constant temperature stirring for 2 to 12 hours to obtain a mixed dispersion;

[0016] (5) The mixed dispersion is filtered under reduced pressure, the filter cake is washed with deionized water for 3 to 5 times, dried and dispersed at 60 to 80° C., and a modified anti-wear agent is obtained.

[0017] Furthermore, the raw materials of the modified solid lubricant include, by weight, 20 to 30 parts of talc powder, 20 to 30 parts of montmorillonite, 80 to 90 parts of phosphoric acid solution, 3 to 5 parts of cationic surfactant, and 100 to 120 parts of ethanol solution;

[0018] Wherein, the cationic surfactant is at least one of hexadecyltrimethylammonium bromide, hexadecyltrimethylammonium chloride, octadecyltrimethylammonium bromide and octadecyltrimethylammonium chloride;

[0019] The preparation method of the modified antiwear agent comprises the following steps:

[0020] (1) adding talc powder and montmorillonite to a phosphoric acid solution, ultrasonically dispersing for 10 to 15 minutes, transferring to a reaction kettle, keeping the temperature at 80 to 100° C. for 6 to 10 hours, cooling, centrifuging, washing, and drying to obtain an acid-treated lubricating powder;

[0021] (2) Mix the cationic surfactant with the ethanol solution, add the acid-treated lubricating powder, stir ultrasonically for 30 to 40 minutes, keep warm at 50 to 60° C. for 10 to 12 hours, wash, filter and dry to obtain a modified solid lubricant.

[0022] Furthermore, the grease is at least one of calcium-based grease, sodium-based grease, and lithium-based grease.

[0023] Furthermore, the tackifier is at least one of C5 hydrogenated resin, C9 hydrogenated resin and dicyclopentadiene hydrogenated resin.

[0024] Furthermore, the rust inhibitor is at least one of benzotriazole, toluenetriazole, mercaptobenzothiazole, and imidazoline diazacyclopentaene.

[0025] Furthermore, the fungicide is at least one of hydroxyethyl hexahydro-s-triazine, benzisothiazolinone, n-butyl-1,2-benzisothiazolin-3-one, enoylmorpholine, tridemorpholine, and iodopropynylbutylcarbamate.

[0026] Furthermore, the method for preparing the environmentally friendly cutting oil comprises the following steps:

[0027] (1) According to weight, weigh 50-60 parts of hydrogenated vegetable oil, 10-20 parts of naphthenic oil, 8-12 parts of synthetic ester, 6-8 parts of modified anti-wear agent, 2-6 parts of modified solid lubricant, 2-6 parts of grease, 1-5 parts of tackifier, 3-5 parts of rust inhibitor, and 1-2 parts of fungicide respectively;

[0028] (2) adding a tackifier to cyclohexane oil, stirring at 100 to 120° C. for 2 to 4 hours, and cooling to obtain a mixed oil;

[0029] (3) Adding synthetic ester, modified anti-wear agent, modified solid lubricant, grease, rust inhibitor and fungicide to hydrogenated vegetable oil in sequence, stirring evenly, adding mixed oil and placing in a homogenizer for homogenization and dispersion to obtain environmentally friendly cutting oil.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] The environmentally friendly cutting oil of the present invention has the advantages of stable storage and good anti-corrosion and anti-rust effects. Meanwhile, after removing the sodium nitrite, the preparation process of the environmentally friendly cutting oil of the present invention is safe and efficient, and safety accidents caused by leakage of sodium nitrite can be avoided, thereby improving the stability and safety of production.

[0032] The present invention also improves the comprehensive performance of the cutting fluid by adding talcum powder and montmorillonite. Talc powder has a low friction coefficient. Adding it can make the surface of the cutting layer smooth and soft, and relieve cutting pressure. At the same time, the surface of montmorillonite is a negatively charged silicate layer, which is a soil-like mineral stacked together by the electrostatic effect between the layers. The unit cell in its crystal structure is composed of two layers of silicon oxygen tetrahedrons sandwiching a layer of aluminum oxygen octahedron. It has a unique one-dimensional layered nanostructure and cation exchange properties. The modified montmorillonite has very good dispersibility and can be dispersed in the cutting oil system to improve the impact resistance of the cutting oil.

[0033] The invention uses hydrogenated resin as a tackifier. The hydrogenated resin can be completely dissolved in cyclohexane oil after heating and has good viscosity, compatibility, thermal stability and light stability, and can improve the water resistance, transparency and viscosity of cutting oil. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0036] The modified anti-wear agent of the present invention comprises the following steps:

[0037] (1) Weigh, by weight, 20 to 40 parts of fumed silica powder with a particle size of 5 to 40 nm, 10 to 20 parts of whiskers with a diameter of 0.05 to 1 μm, 40 to 80 parts of a sulfuric acid solution with a mass fraction of 60 to 80%, 10 to 20 parts of hydrogen peroxide, 80 to 160 parts of a surface modifier, 5 to 10 parts of hexamethyldisilazane, 10 to 20 parts of ammonia water with a mass fraction of 10 to 20%, and 200 to 400 parts of anhydrous ethanol;

[0038] (2) mixing the sulfuric acid solution and the hydrogen peroxide solution and stirring them evenly, adding the fumed silica and the whiskers, stirring and treating them in a water bath at 40 to 60° C. for 1 to 3 hours, filtering, and obtaining an acid-treated anti-wear material;

[0039] (3) adding the acid-treated anti-wear material into deionized water, ultrasonically cleaning it at room temperature for 10 to 40 minutes, filtering it, and drying it with nitrogen to obtain the cleaned anti-wear material;

[0040] (4) adding the cleaned anti-wear material into anhydrous ethanol, stirring and shearing for 10 to 30 minutes under an emulsifier, and then ultrasonically dispersing for 30 to 40 minutes to obtain a dispersion;

[0041] (5) adding a surface modifier and hexamethyldisilazane to the dispersion, slowly adding ammonia water dropwise, and reacting in a water bath at 40 to 80° C. with constant temperature stirring for 2 to 12 hours to obtain a mixed dispersion;

[0042] (6) The mixed dispersion is filtered under reduced pressure, the filter cake is washed with deionized water for 3 to 5 times, dried and dispersed at 60 to 80° C., and a modified anti-wear agent is obtained.

[0043] The whiskers are at least one of cellulose whiskers, silicon carbide whiskers, potassium titanate whiskers, and aluminum borate whiskers; and the surface modifier is at least one of perfluorodecyltrimethoxysilane, vinyltriethoxysilane, n-octyltriethoxysilane, and hexadecyltrimethoxysilane.

[0044] The modified solid lubricant of the present invention comprises the following steps:

[0045] (1) Weigh, by weight, 20 to 30 parts of talc powder, 20 to 30 parts of montmorillonite, 80 to 90 parts of phosphoric acid solution, 3 to 5 parts of cationic surfactant, and 100 to 120 parts of ethanol solution;

[0046] (2) adding talc and montmorillonite to a phosphoric acid solution, ultrasonically dispersing for 10 to 15 minutes, transferring to a reaction kettle, keeping the temperature at 80 to 100° C. for 6 to 10 hours, cooling, centrifuging, washing, and drying to obtain an acid-treated lubricating powder;

[0047] (3) Mix the cationic surfactant with the ethanol solution, add the acid-treated lubricating powder, stir ultrasonically for 30 to 40 minutes, keep warm at 50 to 60° C. for 10 to 12 hours, wash, filter and dry to obtain a modified solid lubricant.

[0048] Wherein, the cationic surfactant is at least one of cetyltrimethylammonium bromide, cetyltrimethylammonium chloride, octadecyltrimethylammonium bromide and octadecyltrimethylammonium chloride.

[0049] The preparation method of the environmentally friendly cutting oil of the present invention comprises the following steps:

[0050] (1) According to weight, weigh 50-60 parts of hydrogenated vegetable oil, 10-20 parts of naphthenic oil, 8-12 parts of synthetic ester, 6-8 parts of modified anti-wear agent, 2-6 parts of modified solid lubricant, 2-6 parts of grease, 1-5 parts of tackifier, 3-5 parts of rust inhibitor, and 1-2 parts of fungicide respectively;

[0051] (2) adding a tackifier to cyclohexane oil, stirring at 100 to 120° C. for 2 to 4 hours, and cooling to obtain a mixed oil;

[0052] (3) Adding synthetic ester, modified anti-wear agent, modified solid lubricant, grease, rust inhibitor and fungicide to hydrogenated vegetable oil in sequence, stirring evenly, adding mixed oil and placing in a homogenizer for homogenization and dispersion to obtain environmentally friendly cutting oil.

[0053] The hydrogenated vegetable oil is at least one of hydrogenated soybean oil, hydrogenated castor oil, hydrogenated sunflower oil and hydrogenated palm oil; the synthetic ester is at least one of stearate, trimethylolpropane oleate, palmitate, dimerized linoleic acid glycol ester, pentaerythritol tetraoleate and polypentaerythritol tetraoleate; the grease is at least one of calcium-based grease, sodium-based grease and lithium-based grease; the tackifier is at least one of C5 hydrogenated resin, C9 hydrogenated resin and dicyclopentadiene hydrogenated resin; the rust inhibitor is at least one of benzotriazole, methylbenzotriazole, mercaptobenzothiazole and imidazoline diazacyclopentene; the bactericide is at least one of hydroxyethyl hexahydro-s-triazine, benzisothiazolinone, n-butyl-1,2-benzisothiazolin-3-one, enoylmorpholine, tridemorpholine and iodopropynylbutylcarbamate.

[0054] Example 1

[0055] The modified anti-wear agent of this embodiment, the preparation method comprises the following steps:

[0056] (1) Weigh, by weight, 20 parts of fumed silica powder with a particle size of 5 nm, 10 parts of cellulose whiskers with a diameter of 0.05 μm, 40 parts of 60% sulfuric acid solution, 10 parts of hydrogen peroxide, 80 parts of perfluorodecyltrimethoxysilane, 5 parts of hexamethyldisilazane, 10 parts of 10% ammonia water, and 200 parts of anhydrous ethanol;

[0057] (2) mixing the sulfuric acid solution and the hydrogen peroxide solution and stirring them evenly, adding the fumed silica and the cellulose whiskers, stirring and treating them in a water bath at 40° C. for 1 hour, filtering, and obtaining an acid-treated anti-wear material;

[0058] (3) adding the acid-treated anti-wear material to deionized water, ultrasonically cleaning it at room temperature for 10 minutes, filtering it, and drying it with nitrogen to obtain the cleaned anti-wear material;

[0059] (4) adding the cleaned anti-wear material into anhydrous ethanol, stirring and shearing for 10 minutes under an emulsifier, and then ultrasonically dispersing for 30 minutes to obtain a dispersion;

[0060] (5) adding perfluorodecyltrimethoxysilane and hexamethyldisilazane to the dispersion, slowly adding ammonia water dropwise, and reacting in a water bath at 40 to 80° C. with constant temperature stirring for 2 h to obtain a mixed dispersion;

[0061] (6) The mixed dispersion was filtered under reduced pressure, the filter cake was washed three times with deionized water, dried at 60° C. and dispersed to obtain a modified anti-wear agent.

[0062] Example 2

[0063] The modified anti-wear agent of this embodiment, the preparation method comprises the following steps:

[0064] (1) Weigh, by weight, 30 parts of fumed silica powder with a particle size of 20 nm, 15 parts of silicon carbide whiskers with a diameter of 0.07 μm, 60 parts of 70% sulfuric acid solution, 15 parts of hydrogen peroxide, 120 parts of vinyl triethoxysilane, 7 parts of hexamethyldisilazane, 15 parts of 15% ammonia water, and 300 parts of anhydrous ethanol;

[0065] (2) mixing the sulfuric acid solution and the hydrogen peroxide solution and stirring them evenly, adding the fumed silicon dioxide and the silicon carbide whisker, stirring and treating them in a water bath at 40 to 60° C. for 2 h, filtering, and obtaining an acid-treated anti-wear material;

[0066] (3) adding the acid-treated anti-wear material to deionized water, ultrasonically cleaning it at room temperature for 25 minutes, filtering it, and drying it with nitrogen to obtain the cleaned anti-wear material;

[0067] (4) adding the cleaned anti-wear material into anhydrous ethanol, stirring and shearing for 20 minutes under an emulsifier, and then ultrasonically dispersing for 35 minutes to obtain a dispersion;

[0068] (5) adding vinyl triethoxysilane and hexamethyldisilazane to the dispersion, slowly adding ammonia water dropwise, and reacting in a water bath at 40 to 80° C. with constant temperature stirring for 7 hours to obtain a mixed dispersion;

[0069] (6) The mixed dispersion is filtered under reduced pressure, the filter cake is washed with deionized water for 3 to 5 times, dried at 70° C. and dispersed to obtain a modified anti-wear agent.

[0070] Example 3

[0071] The modified anti-wear agent of this embodiment, the preparation method comprises the following steps:

[0072] (1) Weigh, by weight, 40 parts of fumed silica powder with a particle size of 40 nm, 20 parts of potassium titanate whiskers with a diameter of 1 μm, 80 parts of 80% sulfuric acid solution, 20 parts of hydrogen peroxide, 160 parts of n-octyltriethoxysilane, 10 parts of hexamethyldisilazane, 20 parts of 20% ammonia water, and 400 parts of anhydrous ethanol;

[0073] (2) mixing the sulfuric acid solution and the hydrogen peroxide solution and stirring them evenly, adding the fumed silica and potassium titanate whiskers, stirring and treating them in a water bath at 60° C. for 3 h, filtering, and obtaining an acid-treated anti-wear material;

[0074] (3) adding the acid-treated anti-wear material to deionized water, ultrasonically cleaning it at room temperature for 40 minutes, filtering it, and drying it with nitrogen to obtain the cleaned anti-wear material;

[0075] (4) adding the cleaned anti-wear material into anhydrous ethanol, stirring and shearing for 30 minutes under an emulsifier, and then ultrasonically dispersing for 40 minutes to obtain a dispersion;

[0076] (5) adding n-octyltriethoxysilane and hexamethyldisilazane to the dispersion, slowly adding ammonia water dropwise, and reacting in a water bath at 40 to 80° C. with constant temperature stirring for 12 hours to obtain a mixed dispersion;

[0077] (6) The mixed dispersion was filtered under reduced pressure, the filter cake was washed 5 times with deionized water, dried and dispersed at 80° C., and a modified anti-wear agent was obtained.

[0078] Example 4

[0079] The modified solid lubricant of this embodiment is prepared by the following steps:

[0080] (1) Weigh, by weight, 20 parts of talc powder, 20 parts of montmorillonite, 80 parts of phosphoric acid solution, 3 parts of hexadecyltrimethylammonium bromide, and 100 parts of ethanol solution;

[0081] (2) adding talc and montmorillonite to a phosphoric acid solution, ultrasonically dispersing for 10 minutes, transferring to a reaction kettle, keeping the temperature at 80° C. for 6 hours, cooling, centrifuging, washing, and drying to obtain an acid-treated lubricating powder;

[0082] (3) Hexadecyltrimethylammonium bromide and ethanol solution are mixed, acid-treated lubricating powder is added, ultrasonic stirring is performed for 30 minutes, heat preservation is performed at 50° C. for 10 hours, washing, suction filtration, and drying are performed to obtain a modified solid lubricant.

[0083] Example 5

[0084] The modified solid lubricant of this embodiment is prepared by the following steps:

[0085] (1) Weigh, by weight, 25 parts of talc powder, 25 parts of montmorillonite, 85 parts of phosphoric acid solution, 4 parts of hexadecyltrimethylammonium chloride, and 110 parts of ethanol solution;

[0086] (2) adding talc and montmorillonite to a phosphoric acid solution, ultrasonically dispersing for 13 minutes, transferring to a reaction kettle, keeping the temperature at 90° C. for 8 hours, cooling, centrifuging, washing, and drying to obtain an acid-treated lubricating powder;

[0087] (3) Hexadecyltrimethylammonium chloride and ethanol solution are mixed, acid-treated lubricating powder is added, ultrasonic stirring is performed for 35 minutes, heat preservation is performed at 55° C. for 11 hours, washing, suction filtration, and drying are performed to obtain a modified solid lubricant.

[0088] Example 6

[0089] The modified solid lubricant of this embodiment is prepared by the following steps:

[0090] (1) Weigh, by weight, 30 parts of talc powder, 30 parts of montmorillonite, 90 parts of phosphoric acid solution, 5 parts of octadecyltrimethylammonium bromide, and 120 parts of ethanol solution;

[0091] (2) adding talc and montmorillonite to a phosphoric acid solution, ultrasonically dispersing for 15 minutes, transferring to a reaction kettle, keeping the temperature at 100° C. for 10 hours, cooling, centrifuging, washing, and drying to obtain an acid-treated lubricating powder;

[0092] (3) Octadecyltrimethylammonium bromide and ethanol solution are mixed, acid-treated lubricating powder is added, ultrasonic stirring is performed for 40 minutes, heat preservation is performed at 60° C. for 12 hours, washing, suction filtration, and drying are performed to obtain a modified solid lubricant.

[0093] Example 7

[0094] The environmentally friendly cutting oil of this embodiment uses the modified anti-wear agent prepared in Example 1 and the modified solid lubricant prepared in Example 4 as raw materials. The preparation method of the environmentally friendly cutting oil of this embodiment includes the following steps:

[0095] (1) Weigh, by weight, 50 parts of hydrogenated soybean oil, 10 parts of naphthenic oil, 8 parts of stearate, 6 parts of modified antiwear agent, 2 parts of modified solid lubricant, 2 parts of calcium-based grease, 1 part of C5 hydrogenated resin, 3 parts of benzotriazole, and 1 part of hydroxyethyl hexahydro-s-triazine;

[0096] (2) Adding C5 hydrogenated resin to cyclohexane oil, stirring at 100°C for 2 hours, and cooling to obtain a mixed oil;

[0097] (3) Stearate, modified anti-wear agent, modified solid lubricant, calcium-based grease, benzotriazole, and hydroxyethyl hexahydro-s-triazine are added to hydrogenated soybean oil in sequence, stirred evenly, and then added to the mixed oil and placed in a homogenizer for homogenization and dispersion to obtain an environmentally friendly cutting oil.

[0098] Example 8

[0099] The environmentally friendly cutting oil of this embodiment uses the modified anti-wear agent prepared in Example 2 and the modified solid lubricant prepared in Example 5 as raw materials. The preparation method of the environmentally friendly cutting oil of this embodiment includes the following steps:

[0100] (1) Weigh, by weight, 55 parts of hydrogenated castor oil, 15 parts of cyclohexane oil, 10 parts of trimethylolpropane oleate, 7 parts of modified antiwear agent, 4 parts of modified solid lubricant, 4 parts of sodium-based grease, 3 parts of carbon nine hydrogenated resin, 4 parts of methyl benzotriazole, and 1.5 parts of benzisothiazolinone;

[0101] (2) adding carbon nine hydrogenated resin to cyclohexane oil, stirring at 110° C. for 3 h, and cooling to obtain a mixed oil;

[0102] (3) Trimethylolpropane oleate, modified anti-wear agent, modified solid lubricant, sodium-based grease, methylbenzotriazole and benzisothiazolinone are added to hydrogenated castor oil in sequence, stirred evenly, and then added to the mixed oil and placed in a homogenizer for homogenization and dispersion to obtain an environmentally friendly cutting oil.

[0103] Example 9

[0104] The environmentally friendly cutting oil of this embodiment uses the modified anti-wear agent prepared in Example 3 and the modified solid lubricant prepared in Example 6 as raw materials. The preparation method of the environmentally friendly cutting oil of this embodiment includes the following steps:

[0105] (1) Weigh, by weight, 60 parts of hydrogenated sunflower oil, 20 parts of naphthenic oil, 12 parts of palmitic acid ester, 8 parts of modified antiwear agent, 6 parts of modified solid lubricant, 6 parts of lithium-based grease, 5 parts of dicyclopentadiene hydrogenated resin, 5 parts of mercaptobenzothiazole, and 2 parts of n-butyl-1,2-benzisothiazolin-3-one;

[0106] (2) adding dicyclopentadiene hydrogenated resin to cyclohexane oil, stirring at 120° C. for 4 h, and cooling to obtain a mixed oil;

[0107] (3) Palmitate, modified anti-wear agent, modified solid lubricant, lithium-based grease, mercaptobenzothiazole, and n-butyl-1,2-benzisothiazolin-3-one are added to hydrogenated sunflower oil in sequence, stirred evenly, and then added to the mixed oil and placed in a homogenizer for homogenization and dispersion to obtain an environmentally friendly cutting oil.

[0108] Experimental example

[0109] The environmentally friendly cutting oils prepared in Examples 7, 8 and 9 were taken as samples for kinematic viscosity, corrosion test, anti-rust test, rotating oxygen bomb test and NO 2- Concentration test, etc., among which the kinematic viscosity test method is GB / T 265, corrosion test, rust test and NO 2- The test method for concentration detection is GB / T 6144, and the test method for the rotating oxygen bomb is SH / T 0193; the performance test data of the prepared cutting oil composition are shown in Table 1.

[0110] Table 1: Cutting oil performance test results

[0111]

[0112]

[0113] As can be seen from Table 1, the environmentally friendly cutting oil prepared by the formula and preparation method of the present invention meets the national standards in all its indicators. It can be seen that the environmentally friendly cutting oil of the present invention has storage stability and good anti-corrosion and anti-rust effects. At the same time, after removing sodium nitrite, the preparation process of the environmentally friendly cutting oil of the present invention is safe and efficient, and can avoid safety accidents caused by sodium nitrite leakage, thereby improving the stability and safety of production. At the same time, the present invention also improves the comprehensive performance of the cutting fluid by adding talcum powder and montmorillonite. Talc has a low friction coefficient. Adding it can make the surface of the cutting layer smooth and flexible, and relieve cutting pressure. At the same time, the surface of montmorillonite is a negatively charged silicate sheet, which is an earthy mineral formed by stacking together by relying on the electrostatic effect between layers. The unit cell in its crystal structure is composed of two layers of silicon oxygen tetrahedron sandwiched between a layer of aluminum oxygen octahedron, and has a unique one-dimensional layered nanostructure and cation exchange properties. The modified montmorillonite has very good dispersibility and can be dispersed in the cutting oil system to improve the impact resistance of the cutting oil. The present invention uses hydrogenated resin as a tackifier. The hydrogenated resin can be completely dissolved in cyclohexane oil after heating, and has good viscosity, compatibility, thermal stability and light stability. It can improve the water resistance, transparency and viscosity of cutting oil, and has good market value and broad application prospects.

[0114] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0115] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. An environmentally friendly cutting oil, characterized in that: The raw materials are recorded in parts by weight, including: 50-60 parts of hydrogenated vegetable oil, 10-20 parts of cyclohexane oil, 8-12 parts of synthetic ester, 6-8 parts of modified anti-wear agent, 2-6 parts of modified solid lubricant, 2-6 parts of grease, 1-5 parts of viscosity enhancer, 3-5 parts of rust inhibitor, and 1-2 parts of bactericide.

2. An environmentally friendly cutting oil according to claim 1, characterized in that: The hydrogenated vegetable oil is at least one of hydrogenated soybean oil, hydrogenated castor oil, hydrogenated sunflower oil and hydrogenated palm oil.

3. The environmentally friendly cutting oil according to claim 1, characterized in that: The synthetic ester is at least one of stearate, trimethylolpropane oleate, palmitate, ethylene glycol dimer linoleate, pentaerythritol tetraoleate and polypentaerythritol tetraoleate.

4. The environmentally friendly cutting oil according to claim 1, characterized in that: The raw materials of the modified anti-wear agent include, by weight, 20 to 40 parts of fumed silicon dioxide powder with a particle size of 5 to 40 nm, 10 to 20 parts of whiskers with a diameter of 0.05 to 1 μm, 40 to 80 parts of sulfuric acid solution with a mass fraction of 60 to 80%, 10 to 20 parts of hydrogen peroxide, 80 to 160 parts of surface modifier, 5 to 10 parts of hexamethyldisilazane, 10 to 20 parts of ammonia water with a mass fraction of 10 to 20%, and 200 to 400 parts of anhydrous ethanol; Wherein, the whiskers are at least one of cellulose whiskers, silicon carbide whiskers, potassium titanate whiskers, and aluminum borate whiskers; The surface modifier is at least one of perfluorodecyltrimethoxysilane, vinyltriethoxysilane, n-octyltriethoxysilane and hexadecyltrimethoxysilane; The preparation method of the modified antiwear agent comprises the following steps: (1) mixing sulfuric acid solution and hydrogen peroxide and stirring evenly, adding fumed silica and whiskers, stirring for 1 to 3 hours in a water bath at 40 to 60° C., filtering, and obtaining an acid-treated anti-wear material; (2) adding the acid-treated anti-wear material into deionized water, ultrasonically cleaning it at room temperature for 10 to 40 minutes, filtering it, and drying it with nitrogen to obtain the cleaned anti-wear material; (3) adding the cleaned anti-wear material into anhydrous ethanol, stirring and shearing for 10 to 30 minutes under an emulsifier, and then ultrasonically dispersing for 30 to 40 minutes to obtain a dispersion; (4) adding a surface modifier and hexamethyldisilazane to the dispersion, slowly adding ammonia water dropwise, and reacting in a water bath at 40 to 80° C. with constant temperature stirring for 2 to 12 hours to obtain a mixed dispersion; (5) The mixed dispersion is filtered under reduced pressure, the filter cake is washed with deionized water for 3 to 5 times, dried and dispersed at 60 to 80° C., and a modified anti-wear agent is obtained.

5. The environmentally friendly cutting oil according to claim 1, characterized in that: The raw materials of the modified solid lubricant include, by weight, 20 to 30 parts of talc powder, 20 to 30 parts of montmorillonite, 80 to 90 parts of phosphoric acid solution, 3 to 5 parts of cationic surfactant, and 100 to 120 parts of ethanol solution; Wherein, the cationic surfactant is at least one of hexadecyltrimethylammonium bromide, hexadecyltrimethylammonium chloride, octadecyltrimethylammonium bromide and octadecyltrimethylammonium chloride; The preparation method of the modified antiwear agent comprises the following steps: (1) adding talc powder and montmorillonite to a phosphoric acid solution, ultrasonically dispersing for 10 to 15 minutes, transferring to a reaction kettle, keeping the temperature at 80 to 100° C. for 6 to 10 hours, cooling, centrifuging, washing, and drying to obtain an acid-treated lubricating powder; (2) Mix the cationic surfactant with the ethanol solution, add the acid-treated lubricating powder, stir ultrasonically for 30 to 40 minutes, keep warm at 50 to 60° C. for 10 to 12 hours, wash, filter and dry to obtain a modified solid lubricant.

6. The environmentally friendly cutting oil according to claim 1, characterized in that: The lubricating grease is at least one of calcium-based lubricating grease, sodium-based lubricating grease and lithium-based lubricating grease.

7. The environmentally friendly cutting oil according to claim 1, characterized in that: The tackifier is at least one of C5 hydrogenated resin, C9 hydrogenated resin and dicyclopentadiene hydrogenated resin.

8. The environmentally friendly cutting oil according to claim 1, characterized in that: The rust inhibitor is at least one of benzotriazole, toluene triazole, mercaptobenzothiazole and imidazoline diazacyclopentaene.

9. The environmentally friendly cutting oil according to claim 1, characterized in that: The bactericide is at least one of hydroxyethyl hexahydro-s-triazine, benzisothiazolinone, n-butyl-1,2-benzisothiazolin-3-one, enoylmorpholine, tridemorpholine, and iodopropynylbutylcarbamate.

10. A method for preparing an environmentally friendly cutting oil as claimed in claims 1 to 9, characterized in that: The following steps are involved: (1) According to weight, weigh 50-60 parts of hydrogenated vegetable oil, 10-20 parts of naphthenic oil, 8-12 parts of synthetic ester, 6-8 parts of modified anti-wear agent, 2-6 parts of modified solid lubricant, 2-6 parts of grease, 1-5 parts of tackifier, 3-5 parts of rust inhibitor, and 1-2 parts of fungicide respectively; (2) adding a tackifier to cyclohexane oil, stirring at 100 to 120° C. for 2 to 4 hours, and cooling to obtain a mixed oil; (3) Adding synthetic ester, modified anti-wear agent, modified solid lubricant, grease, rust inhibitor and fungicide to hydrogenated vegetable oil in sequence, stirring evenly, adding mixed oil and placing in a homogenizer for homogenization and dispersion to obtain environmentally friendly cutting oil.

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