CN116082842A - High-low temperature resistant silicone grease and preparation method thereof - Google Patents
High-low temperature resistant silicone grease and preparation method thereof Download PDFInfo
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- CN116082842A CN116082842A CN202211685339.0A CN202211685339A CN116082842A CN 116082842 A CN116082842 A CN 116082842A CN 202211685339 A CN202211685339 A CN 202211685339A CN 116082842 A CN116082842 A CN 116082842A
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- 239000004519 grease Substances 0.000 title claims abstract description 82
- 229920001296 polysiloxane Polymers 0.000 title claims abstract description 57
- 238000002360 preparation method Methods 0.000 title abstract description 7
- 239000000654 additive Substances 0.000 claims abstract description 41
- 230000000996 additive effect Effects 0.000 claims abstract description 38
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 claims abstract description 33
- 229920002545 silicone oil Polymers 0.000 claims abstract description 33
- -1 polytetrafluoroethylene Polymers 0.000 claims abstract description 30
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 30
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 30
- 238000005260 corrosion Methods 0.000 claims abstract description 27
- 239000007866 anti-wear additive Substances 0.000 claims abstract description 23
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 20
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 20
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000002994 raw material Substances 0.000 claims abstract description 14
- RMKNTZWZQFIOOB-UHFFFAOYSA-N n-butyl-2-octyl-n-phenylaniline Chemical group CCCCCCCCC1=CC=CC=C1N(CCCC)C1=CC=CC=C1 RMKNTZWZQFIOOB-UHFFFAOYSA-N 0.000 claims description 40
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 29
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 claims description 23
- 229910052901 montmorillonite Inorganic materials 0.000 claims description 23
- 238000003756 stirring Methods 0.000 claims description 23
- 238000000227 grinding Methods 0.000 claims description 21
- 239000012178 vegetable wax Substances 0.000 claims description 21
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical group C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 20
- 125000005227 alkyl sulfonate group Chemical group 0.000 claims description 20
- YSIQDTZQRDDQNF-UHFFFAOYSA-L barium(2+);2,3-di(nonyl)naphthalene-1-sulfonate Chemical group [Ba+2].C1=CC=C2C(S([O-])(=O)=O)=C(CCCCCCCCC)C(CCCCCCCCC)=CC2=C1.C1=CC=C2C(S([O-])(=O)=O)=C(CCCCCCCCC)C(CCCCCCCCC)=CC2=C1 YSIQDTZQRDDQNF-UHFFFAOYSA-L 0.000 claims description 20
- 229910052708 sodium Inorganic materials 0.000 claims description 20
- 239000011734 sodium Substances 0.000 claims description 20
- 239000000203 mixture Substances 0.000 claims description 15
- 238000006243 chemical reaction Methods 0.000 claims description 13
- 238000010438 heat treatment Methods 0.000 claims description 12
- 238000002156 mixing Methods 0.000 claims description 12
- 230000007797 corrosion Effects 0.000 claims description 11
- 230000002401 inhibitory effect Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 2
- 239000010687 lubricating oil Substances 0.000 abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 5
- 230000001050 lubricating effect Effects 0.000 description 19
- 238000000034 method Methods 0.000 description 12
- 239000000463 material Substances 0.000 description 11
- 239000003112 inhibitor Substances 0.000 description 10
- 239000002105 nanoparticle Substances 0.000 description 9
- 239000002199 base oil Substances 0.000 description 6
- 238000001125 extrusion Methods 0.000 description 6
- 239000007769 metal material Substances 0.000 description 6
- 239000002562 thickening agent Substances 0.000 description 6
- 238000005461 lubrication Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- 235000019198 oils Nutrition 0.000 description 4
- 239000006185 dispersion Substances 0.000 description 3
- 239000010439 graphite Substances 0.000 description 3
- 229910002804 graphite Inorganic materials 0.000 description 3
- 239000002480 mineral oil Substances 0.000 description 3
- 235000010446 mineral oil Nutrition 0.000 description 3
- 239000002086 nanomaterial Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 230000003746 surface roughness Effects 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 235000015112 vegetable and seed oil Nutrition 0.000 description 2
- 239000008158 vegetable oil Substances 0.000 description 2
- 239000001993 wax Substances 0.000 description 2
- 241000282414 Homo sapiens Species 0.000 description 1
- 244000147568 Laurus nobilis Species 0.000 description 1
- 235000017858 Laurus nobilis Nutrition 0.000 description 1
- 240000000111 Saccharum officinarum Species 0.000 description 1
- 235000007201 Saccharum officinarum Nutrition 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 235000005212 Terminalia tomentosa Nutrition 0.000 description 1
- 239000004203 carnauba wax Substances 0.000 description 1
- 235000013869 carnauba wax Nutrition 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
- C08L83/04—Polysiloxanes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Lubricants (AREA)
Abstract
The application provides high-low temperature resistant silicone grease and a preparation method thereof, and relates to the technical field of lubricating oil. The high-low temperature resistant silicone grease comprises the following raw materials in parts by weight: 70-80 parts of silicone oil, 10-20 parts of polytetrafluoroethylene, 2-5 parts of nano titanium nitride, 0.2-1 part of antioxidant, 0.5-2 parts of extreme pressure anti-wear additive, 0.2-1 part of anti-corrosion additive and 0.1-0.5 part of anti-rust additive. The silicone grease lubricating oil prepared by the application has good pumpability, extreme pressure resistance and wear resistance, lubricity, water resistance and moisture resistance and stability in high and low temperature environments.
Description
Technical Field
The application relates to the technical field of lubricating oil, in particular to high-low temperature resistant silicone grease and a preparation method thereof.
Background
Since human beings enter the industrial society, various mechanical equipment is generated, the mechanical equipment gathers various parts and does not generate relative motion at any time, friction and wear are common phenomena in the friction process, and according to statistics, more than one third of the world loss of primary energy sources comes from friction, so that the reduction of economic losses caused by friction and wear has great significance. Lubrication is an effective technique to reduce friction, reduce or avoid wear. At present, most lubricants are added with various lubricating additives to improve the performance, while the traditional additives realize good tribological performance through physical adsorption and chemical reaction, so that zero abrasion of materials and repairing effect on the damage of the materials cannot be realized. The lubricating additive determines the service performance of the lubricant to a great extent, and develops a novel self-repairing lubricating additive so as to blend a lubricating oil product, thereby reducing friction and abrasion and having development significance for national economy.
Lubricating oils generally consist of two parts, a base oil and additives. Base oils are the main components of lubricating oils and determine the basic properties of lubricating oils. The base oil widely used at present comprises mineral oil, vegetable oil and synthetic oil, wherein the use history of the mineral oil is long, the use amount of the mineral oil at the present stage is maximum, and the vegetable oil has the greatest advantage of biodegradability and is beneficial to environmental protection. The history of synthetic oils is relatively short, since it has the advantages of good stability and long lubrication life, which is the direction of research by scholars in recent years, and thus it is of great importance to develop synthetic oil-based greases having excellent properties in all aspects.
Disclosure of Invention
The purpose of the application is to provide a high and low temperature resistant silicone grease which has good pumpability, extreme pressure resistance and wear resistance, lubricity, water resistance and moisture resistance and stability under high and low temperature environments.
Another object of the present application is to provide a method for preparing high and low temperature resistant silicone grease, which is simple and convenient.
The technical problem of the application is solved by adopting the following technical scheme.
On one hand, the embodiment of the application provides high-low temperature resistant silicone grease, which comprises the following raw materials in parts by weight: 70-80 parts of silicone oil, 10-20 parts of polytetrafluoroethylene, 2-5 parts of nano titanium nitride, 0.2-1 part of antioxidant, 0.5-2 parts of extreme pressure anti-wear additive, 0.2-1 part of anti-corrosion additive and 0.1-0.5 part of anti-rust additive.
On the other hand, the embodiment of the application provides a preparation method of high-low temperature resistant silicone grease, which comprises the following steps:
placing silicone oil and polytetrafluoroethylene in a reaction kettle, heating and uniformly mixing, adding other raw materials, and uniformly stirring to obtain a fat-forming mixture;
grinding the fat-forming mixture to obtain the silicone grease.
Compared with the prior art, the embodiment of the application has at least the following advantages or beneficial effects:
1. the silicone oil is used as the base oil, has the advantage of good stability, is matched with polytetrafluoroethylene as a thickening agent, has excellent high temperature resistance and low temperature resistance, can enable the whole silicone grease lubricating oil to have high temperature resistance and low temperature resistance, has stability in a temperature range of-30-230 ℃, and is suitable for a wider environment range.
2. The application further adds titanium nitride, an antioxidant, an extrusion antiwear additive, an anti-corrosion additive and an anti-rust additive on the basis of silicone oil and a thickener, wherein the titanium nitride still has stable lubrication and wear resistance at high temperature, the service temperature range of the silicone grease lubricating oil is improved, and the extrusion antiwear additive, the anti-corrosion additive and the anti-rust additive can respectively improve the waterproof corrosion resistance and the wear resistance of the silicone grease lubricating oil.
3. In the preferred mode of the application, nano montmorillonite, nano graphite powder and vegetable wax are also added, on one hand, the montmorillonite plays roles of tackifying and dispersing various raw materials in lubricating oil, and the graphite powder forms a graphite lubricating film under high-temperature friction, so that the lubricating property and the wear resistance of the graphite powder are improved; on the other hand, montmorillonite, graphite powder and titanium nitride are all nano materials, and solid nano particles in the prepared lubricating grease can not only improve the heat conductivity coefficient of the lubricating grease, but also improve the surface finish of a workpiece due to the ball bearing-like effect of the nano particles, fill damaged parts of the metal materials, reduce the surface roughness of the metal materials, further reduce the cutting force during cutting and improve the lubricating effect. In addition, the vegetable wax has excellent antifriction and antiwear properties, and can prevent blockage at a friction interface and improve self-repairing capability by matching with excellent heat transfer property and dispersion stability of nano particles.
In conclusion, the silicone grease lubricating oil prepared by the application has good pumpability, extreme pressure resistance and wear resistance, lubricity, water resistance and moisture resistance and stability in high and low temperature environments.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below. The specific conditions are not noted in the examples and are carried out according to conventional conditions or conditions recommended by the manufacturer. The reagents or apparatus used were conventional products commercially available without the manufacturer's attention.
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The present application will be described in detail with reference to specific examples.
The high-low temperature resistant silicone grease comprises the following raw materials in parts by weight: 70-80 parts of silicone oil, 10-20 parts of polytetrafluoroethylene, 2-5 parts of nano titanium nitride, 0.2-1 part of antioxidant, 0.5-2 parts of extreme pressure anti-wear additive, 0.2-1 part of anti-corrosion additive and 0.1-0.5 part of anti-rust additive.
The silicone oil is used as the base oil, has the advantage of good stability, is matched with polytetrafluoroethylene as a thickening agent, has excellent high temperature resistance and low temperature resistance, can enable the whole silicone grease lubricating oil to have high temperature resistance and low temperature resistance, has stability in a temperature range of-30-230 ℃, and is suitable for a wider environment range.
The application further adds titanium nitride, an antioxidant, an extrusion antiwear additive, an anti-corrosion additive and an anti-rust additive on the basis of silicone oil and a thickener, wherein the titanium nitride still has stable lubrication and wear resistance at high temperature, the service temperature range of the silicone grease lubricating oil is improved, and the extrusion antiwear additive, the anti-corrosion additive and the anti-rust additive can respectively improve the waterproof corrosion resistance and the wear resistance of the silicone grease lubricating oil.
In some embodiments of the present application, the silicone grease further includes the following raw materials in parts by weight: 0.5-2 parts of nano montmorillonite, 1-3 parts of nano graphite powder and 5-10 parts of vegetable wax.
The application also adds nano montmorillonite, nano graphite powder and vegetable wax, wherein the vegetable wax is carnauba wax, sugar cane wax or laurel wax. On one hand, montmorillonite plays roles in tackifying and dispersing various raw materials in lubricating oil, and graphite powder forms a graphite lubricating film under high-temperature friction, so that the lubricating property and the wear resistance of the graphite powder are improved; on the other hand, montmorillonite, graphite powder and titanium nitride are all nano materials, and solid nano particles in the prepared lubricating grease can not only improve the heat conductivity coefficient of the lubricating grease, but also improve the surface finish of a workpiece due to the ball bearing-like effect of the nano particles, fill damaged parts of the metal materials, reduce the surface roughness of the metal materials, further reduce the cutting force during cutting and improve the lubricating effect. In addition, the vegetable wax has excellent antifriction and antiwear properties, and can prevent blockage at a friction interface and improve self-repairing capability by matching with excellent heat transfer property and dispersion stability of nano particles.
In some embodiments of the present application, the silicone grease is composed of the following raw materials in parts by weight: 76 parts of silicone oil, 13 parts of polytetrafluoroethylene, 3 parts of nano titanium nitride, 0.5 part of antioxidant, 1 part of extreme pressure anti-wear additive, 0.5 part of anti-corrosion additive, 0.3 part of anti-rust additive, 1 part of nano montmorillonite, 2 parts of nano graphite powder and 6 parts of vegetable wax.
In some embodiments of the present application, the antioxidant is octyl butyldiphenylamine.
In some embodiments of the present application, the extreme pressure antiwear additive described above is sodium primary/secondary alkyl sulfonate.
In some embodiments of the present application, the corrosion-resistant additive is octyl butyldiphenylamine.
In some embodiments of the present application, the rust inhibitive additive is barium dinonylnaphthalene sulfonate.
A preparation method of high-low temperature resistant silicone grease comprises the following steps:
placing silicone oil and polytetrafluoroethylene in a reaction kettle, heating and uniformly mixing, adding other raw materials, and uniformly stirring to obtain a fat-forming mixture;
grinding the fat-forming mixture to obtain the silicone grease.
In some embodiments of the present application, the temperature after the temperature rise is 75-85 ℃, and the stirring time is 1-3h.
The features and capabilities of the present application are described in further detail below in connection with the examples.
Example 1
A high-low temperature resistant silicone grease is prepared by the following method:
preparing materials: 75kg of silicone oil, 15kg of polytetrafluoroethylene, 3kg of nano titanium nitride, 0.5kg of antioxidant (octyl butyldiphenylamine), 1kg of extreme pressure anti-wear additive (sodium primary/secondary alkyl sulfonate), 0.5kg of anti-corrosion additive (octyl butyldiphenylamine) and 0.2kg of rust-preventive additive (barium dinonyl naphthalene sulfonate) are weighed.
Mixing: firstly adding silicone oil and polytetrafluoroethylene into a reaction kettle, heating and stirring, keeping the temperature at 75 ℃, adding nano titanium nitride, octyl butyl diphenylamine, sodium primary/secondary alkyl sulfonate, octyl butyl diphenylamine and barium dinonyl naphthalene sulfonate, and continuously stirring for 2 hours to form grease.
Grinding: transferring the mixture after forming the grease to a three-roller grinder for grinding to obtain the silicone grease lubricating oil of the embodiment.
Example 2
A high-low temperature resistant silicone grease is prepared by the following method:
preparing materials: 80kg of silicone oil, 18kg of polytetrafluoroethylene, 4kg of nano titanium nitride, 0.8kg of antioxidant (octyl butyldiphenylamine), 1.5kg of extreme pressure anti-wear additive (sodium primary/secondary alkyl sulfonate), 0.2kg of anti-corrosion additive (octyl butyldiphenylamine) and 0.5kg of rust-preventive additive (barium dinonyl naphthalene sulfonate) are weighed.
Mixing: firstly adding silicone oil and polytetrafluoroethylene into a reaction kettle, heating and stirring, keeping the temperature at 80 ℃, adding nano titanium nitride, octyl butyl diphenylamine, sodium primary/secondary alkyl sulfonate, octyl butyl diphenylamine and barium dinonyl naphthalene sulfonate, and continuously stirring for 2.5 hours to form grease.
Grinding: transferring the mixture after forming the grease to a three-roller grinder for grinding to obtain the silicone grease lubricating oil of the embodiment.
Example 3
A high-low temperature resistant silicone grease is prepared by the following method:
preparing materials: 70kg of silicone oil, 12kg of polytetrafluoroethylene, 2kg of nano titanium nitride, 0.2kg of antioxidant (octyl butyldiphenylamine), 0.5kg of extreme pressure anti-wear additive (sodium primary/secondary alkyl sulfonate), 1kg of anti-corrosion additive (octyl butyldiphenylamine) and 0.2kg of rust-preventive additive (barium dinonyl naphthalene sulfonate) are weighed.
Mixing: firstly adding silicone oil and polytetrafluoroethylene into a reaction kettle, heating and stirring, keeping the temperature at 74 ℃, adding nano titanium nitride, octyl butyl diphenylamine, sodium primary/secondary alkyl sulfonate, octyl butyl diphenylamine and barium dinonyl naphthalene sulfonate, and continuously stirring for 1.5 hours to form grease.
Grinding: transferring the mixture after forming the grease to a three-roller grinder for grinding to obtain the silicone grease lubricating oil of the embodiment.
Example 4
A high-low temperature resistant silicone grease is prepared by the following method:
preparing materials: 70kg of silicone oil, 10kg of polytetrafluoroethylene, 5kg of nano titanium nitride, 1kg of antioxidant (octyl butyldiphenylamine), 2kg of extreme pressure anti-wear additive (sodium primary/secondary alkyl sulfonate), 0.2kg of anti-corrosion additive (octyl butyldiphenylamine) and 0.1kg of rust-preventive additive (barium dinonyl naphthalene sulfonate) are weighed.
Mixing: firstly adding silicone oil and polytetrafluoroethylene into a reaction kettle, heating and stirring, keeping the temperature at 80 ℃, adding nano titanium nitride, octyl butyl diphenylamine, sodium primary/secondary alkyl sulfonate, octyl butyl diphenylamine and barium dinonyl naphthalene sulfonate, and continuously stirring for 1h to form grease.
Grinding: transferring the mixture after forming the grease to a three-roller grinder for grinding to obtain the silicone grease lubricating oil of the embodiment.
Example 5
A high-low temperature resistant silicone grease is prepared by the following method:
preparing materials: 78kg of silicone oil, 12kg of polytetrafluoroethylene, 2kg of nano titanium nitride, 1.2kg of nano montmorillonite, 2kg of nano graphite powder, 8kg of vegetable wax, 0.8kg of antioxidant (octyl butyldiphenylamine), 1.8kg of extreme pressure antiwear additive (sodium primary/secondary alkyl sulfonate), 0.6kg of corrosion inhibitor (octyl butyldiphenylamine) and 0.2kg of rust inhibitor (barium dinonyl naphthalene sulfonate) are weighed.
Mixing: firstly adding silicone oil and polytetrafluoroethylene into a reaction kettle, heating and stirring, keeping the temperature at 80 ℃, adding nano titanium nitride, nano montmorillonite, nano graphite powder, vegetable wax, octyl butyldiphenylamine, sodium primary/secondary alkyl sulfonate, octyl butyldiphenylamine and barium dinonylnaphthalene sulfonate, and continuously stirring for 2 hours to form grease.
Grinding: transferring the mixture after forming the grease to a three-roller grinder for grinding to obtain the silicone grease lubricating oil of the embodiment.
Example 6
A high-low temperature resistant silicone grease is prepared by the following method:
preparing materials: 76kg of silicone oil, 13kg of polytetrafluoroethylene, 3kg of nano titanium nitride, 1kg of nano montmorillonite, 2kg of nano graphite powder, 6kg of vegetable wax, 0.5kg of antioxidant (octyl butyldiphenylamine), 1kg of extreme pressure antiwear additive (sodium primary/secondary alkyl sulfonate), 0.5kg of corrosion inhibitor (octyl butyldiphenylamine) and 0.3kg of rust inhibitor (barium dinonyl naphthalene sulfonate) are weighed.
Mixing: firstly adding silicone oil and polytetrafluoroethylene into a reaction kettle, heating and stirring, keeping the temperature at 70 ℃, adding nano titanium nitride, nano montmorillonite, nano graphite powder, vegetable wax, octyl butyldiphenylamine, sodium primary/secondary alkyl sulfonate, octyl butyldiphenylamine and barium dinonylnaphthalene sulfonate, and continuously stirring for 2 hours to form grease.
Grinding: transferring the mixture after forming the grease to a three-roller grinder for grinding to obtain the silicone grease lubricating oil of the embodiment.
Example 7
A high-low temperature resistant silicone grease is prepared by the following method:
preparing materials: 72kg of silicone oil, 20kg of polytetrafluoroethylene, 2kg of nano titanium nitride, 2kg of nano montmorillonite, 3kg of nano graphite powder, 5kg of vegetable wax, 0.2kg of antioxidant (octyl butyldiphenylamine), 2kg of extreme pressure antiwear additive (sodium primary/secondary alkyl sulfonate), 1kg of corrosion inhibitor (octyl butyldiphenylamine) and 0.1kg of rust inhibitor (barium dinonyl naphthalene sulfonate) are weighed.
Mixing: firstly adding silicone oil and polytetrafluoroethylene into a reaction kettle, heating and stirring, keeping the temperature at 72 ℃, adding nano titanium nitride, nano montmorillonite, nano graphite powder, vegetable wax, octyl butyldiphenylamine, sodium primary/secondary alkyl sulfonate, octyl butyldiphenylamine and barium dinonylnaphthalene sulfonate, and continuously stirring for 3 hours to form grease.
Grinding: transferring the mixture after forming the grease to a three-roller grinder for grinding to obtain the silicone grease lubricating oil of the embodiment.
Example 8
A high-low temperature resistant silicone grease is prepared by the following method:
preparing materials: 70kg of silicone oil, 10kg of polytetrafluoroethylene, 3kg of nano titanium nitride, 0.5kg of nano montmorillonite, 1.5kg of nano graphite powder, 10kg of vegetable wax, 0.3kg of antioxidant (octyl butyldiphenylamine), 2kg of extreme pressure antiwear additive (sodium primary/secondary alkyl sulfonate), 0.5kg of corrosion inhibitor (octyl butyldiphenylamine) and 0.5kg of rust inhibitor (barium dinonyl naphthalene sulfonate) are weighed.
Mixing: firstly adding silicone oil and polytetrafluoroethylene into a reaction kettle, heating and stirring, keeping the temperature at 75 ℃, adding nano titanium nitride, nano montmorillonite, nano graphite powder, vegetable wax, octyl butyldiphenylamine, sodium primary/secondary alkyl sulfonate, octyl butyldiphenylamine and barium dinonylnaphthalene sulfonate, and continuously stirring for 3 hours to form grease.
Grinding: transferring the mixture after forming the grease to a three-roller grinder for grinding to obtain the silicone grease lubricating oil of the embodiment.
Example 9
A high-low temperature resistant silicone grease is prepared by the following method:
preparing materials: 76kg of silicone oil, 10kg of polytetrafluoroethylene, 2kg of nano titanium nitride, 0.8kg of nano montmorillonite, 2.5kg of nano graphite powder, 10kg of vegetable wax, 0.3kg of antioxidant (octyl butyldiphenylamine), 1.2kg of extreme pressure antiwear additive (sodium primary/secondary alkyl sulfonate), 0.5kg of corrosion inhibitor (octyl butyldiphenylamine) and 0.2kg of rust inhibitor (barium dinonylnaphthalene sulfonate) are weighed.
Mixing: firstly adding silicone oil and polytetrafluoroethylene into a reaction kettle, heating and stirring, keeping the temperature at 80 ℃, adding nano titanium nitride, nano montmorillonite, nano graphite powder, vegetable wax, octyl butyldiphenylamine, sodium primary/secondary alkyl sulfonate, octyl butyldiphenylamine and barium dinonylnaphthalene sulfonate, and continuously stirring for 2 hours to form grease.
Grinding: transferring the mixture after forming the grease to a three-roller grinder for grinding to obtain the silicone grease lubricating oil of the embodiment.
Experimental example
The silicone greases prepared in example 1 and examples 5 to 7 of the present application were subjected to tests for appearance, cone penetration, drop point, four-ball sintering load, timken, corrosiveness, evaporation amount, steel mesh oil separation, and the like, and the results are shown in table 1.
TABLE 1
As can be seen from table 1, each performance of the high temperature resistant anti-seize grease prepared in the embodiment of the application meets the relevant regulations, and the high temperature resistant anti-seize grease has good viscosity, water and moisture resistance, corrosion resistance and lubricating performance.
In summary, the high-low temperature resistant silicone grease and the preparation method thereof in the embodiment of the application have the following advantages:
1. the silicone oil is used as the base oil, has the advantage of good stability, is matched with polytetrafluoroethylene as a thickening agent, has excellent high temperature resistance and low temperature resistance, can enable the whole silicone grease lubricating oil to have high temperature resistance and low temperature resistance, has stability in a temperature range of-30-230 ℃, and is suitable for a wider environment range.
2. The application further adds titanium nitride, an antioxidant, an extrusion antiwear additive, an anti-corrosion additive and an anti-rust additive on the basis of silicone oil and a thickener, wherein the titanium nitride still has stable lubrication and wear resistance at high temperature, the service temperature range of the silicone grease lubricating oil is improved, and the extrusion antiwear additive, the anti-corrosion additive and the anti-rust additive can respectively improve the waterproof corrosion resistance and the wear resistance of the silicone grease lubricating oil.
3. In the preferred mode of the application, nano montmorillonite, nano graphite powder and vegetable wax are also added, on one hand, the montmorillonite plays roles of tackifying and dispersing various raw materials in lubricating oil, and the graphite powder forms a graphite lubricating film under high-temperature friction, so that the lubricating property and the wear resistance of the graphite powder are improved; on the other hand, montmorillonite, graphite powder and titanium nitride are all nano materials, and solid nano particles in the prepared lubricating grease can not only improve the heat conductivity coefficient of the lubricating grease, but also improve the surface finish of a workpiece due to the ball bearing-like effect of the nano particles, fill damaged parts of the metal materials, reduce the surface roughness of the metal materials, further reduce the cutting force during cutting and improve the lubricating effect. In addition, the vegetable wax has excellent antifriction and antiwear properties, and can prevent blockage at a friction interface and improve self-repairing capability by matching with excellent heat transfer property and dispersion stability of nano particles.
In conclusion, the silicone grease lubricating oil prepared by the application has good pumpability, extreme pressure resistance and wear resistance, lubricity, water resistance and moisture resistance and stability in high and low temperature environments.
The embodiments described above are some, but not all, of the embodiments of the present application. The detailed description of the embodiments of the present application is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present application based on the embodiments herein.
Claims (9)
1. The high-low temperature resistant silicone grease is characterized by comprising the following raw materials in parts by weight: 70-80 parts of silicone oil, 10-20 parts of polytetrafluoroethylene, 2-5 parts of nano titanium nitride, 0.2-1 part of antioxidant, 0.5-2 parts of extreme pressure anti-wear additive, 0.2-1 part of anti-corrosion additive and 0.1-0.5 part of anti-rust additive.
2. The high and low temperature resistant silicone grease according to claim 1, further comprising the following raw materials in parts by weight: 0.5-2 parts of nano montmorillonite, 1-3 parts of nano graphite powder and 5-10 parts of vegetable wax.
3. The high and low temperature resistant silicone grease according to claim 2, which is characterized by comprising the following raw materials in parts by weight: 76 parts of silicone oil, 13 parts of polytetrafluoroethylene, 3 parts of nano titanium nitride, 0.5 part of antioxidant, 1 part of extreme pressure anti-wear additive, 0.5 part of anti-corrosion additive, 0.3 part of anti-rust additive, 1 part of nano montmorillonite, 2 parts of nano graphite powder and 6 parts of vegetable wax.
4. A high and low temperature resistant silicone grease according to any one of claims 1-3, wherein the antioxidant is octyl butyl diphenylamine.
5. A high and low temperature resistant silicone grease according to any one of claims 1-3 wherein the extreme pressure antiwear additive is sodium primary/secondary alkyl sulfonate.
6. A high and low temperature resistant silicone grease according to any one of claims 1-3, wherein the corrosion resistant additive is octyl butyl diphenylamine.
7. A high and low temperature resistant silicone grease according to any one of claims 1-3, wherein the rust inhibiting additive is barium dinonylnaphthalene sulfonate.
8. A method for producing the high and low temperature resistant silicone grease according to any one of claims 1 to 7, comprising the steps of:
placing silicone oil and polytetrafluoroethylene in a reaction kettle, heating and uniformly mixing, adding other raw materials, and uniformly stirring to obtain a fat-forming mixture;
grinding the fat-forming mixture to obtain the silicone grease.
9. The method for producing a high and low temperature resistant silicone grease according to any one of claim 8, wherein the temperature after the temperature rise is 75 to 85 ℃ and the stirring time is 1 to 3 hours.
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