CN115895761A - High-temperature-resistant universal polar pressure type lubricating grease - Google Patents
High-temperature-resistant universal polar pressure type lubricating grease Download PDFInfo
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- CN115895761A CN115895761A CN202211691131.XA CN202211691131A CN115895761A CN 115895761 A CN115895761 A CN 115895761A CN 202211691131 A CN202211691131 A CN 202211691131A CN 115895761 A CN115895761 A CN 115895761A
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- 230000001050 lubricating effect Effects 0.000 title claims abstract description 61
- 239000004519 grease Substances 0.000 title claims abstract description 49
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical class [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 53
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 51
- 239000002199 base oil Substances 0.000 claims abstract description 43
- 238000002156 mixing Methods 0.000 claims abstract description 36
- 239000002562 thickening agent Substances 0.000 claims abstract description 26
- 239000000654 additive Substances 0.000 claims abstract description 24
- 230000000996 additive effect Effects 0.000 claims abstract description 23
- SLCVBVWXLSEKPL-UHFFFAOYSA-N neopentyl glycol Chemical compound OCC(C)(C)CO SLCVBVWXLSEKPL-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 14
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 14
- 239000002270 dispersing agent Substances 0.000 claims abstract description 13
- 229910021389 graphene Inorganic materials 0.000 claims description 21
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 12
- 239000003599 detergent Substances 0.000 claims description 9
- 239000010410 layer Substances 0.000 claims description 9
- 239000000344 soap Substances 0.000 claims description 9
- 239000002994 raw material Substances 0.000 claims description 8
- KZNICNPSHKQLFF-UHFFFAOYSA-N succinimide Chemical compound O=C1CCC(=O)N1 KZNICNPSHKQLFF-UHFFFAOYSA-N 0.000 claims description 8
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 7
- 229910052744 lithium Inorganic materials 0.000 claims description 7
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 7
- 239000003208 petroleum Substances 0.000 claims description 7
- 238000002360 preparation method Methods 0.000 claims description 7
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims description 7
- -1 sulfurized lard Chemical compound 0.000 claims description 7
- 235000021355 Stearic acid Nutrition 0.000 claims description 6
- YSMRWXYRXBRSND-UHFFFAOYSA-N TOTP Chemical compound CC1=CC=CC=C1OP(=O)(OC=1C(=CC=CC=1)C)OC1=CC=CC=C1C YSMRWXYRXBRSND-UHFFFAOYSA-N 0.000 claims description 6
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 6
- 150000001408 amides Chemical class 0.000 claims description 6
- 238000000498 ball milling Methods 0.000 claims description 6
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 6
- 239000004005 microsphere Substances 0.000 claims description 6
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 6
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 claims description 6
- 229920013639 polyalphaolefin Polymers 0.000 claims description 6
- JVUYWILPYBCNNG-UHFFFAOYSA-N potassium;oxido(oxo)borane Chemical compound [K+].[O-]B=O JVUYWILPYBCNNG-UHFFFAOYSA-N 0.000 claims description 6
- 239000010936 titanium Substances 0.000 claims description 6
- 229910052719 titanium Inorganic materials 0.000 claims description 6
- LKOVPWSSZFDYPG-WUKNDPDISA-N trans-octadec-2-enoic acid Chemical compound CCCCCCCCCCCCCCC\C=C\C(O)=O LKOVPWSSZFDYPG-WUKNDPDISA-N 0.000 claims description 6
- VBICKXHEKHSIBG-UHFFFAOYSA-N beta-monoglyceryl stearate Natural products CCCCCCCCCCCCCCCCCC(=O)OCC(O)CO VBICKXHEKHSIBG-UHFFFAOYSA-N 0.000 claims description 5
- IEQIEDJGQAUEQZ-UHFFFAOYSA-N phthalocyanine Chemical compound N1C(N=C2C3=CC=CC=C3C(N=C3C4=CC=CC=C4C(=N4)N3)=N2)=C(C=CC=C2)C2=C1N=C1C2=CC=CC=C2C4=N1 IEQIEDJGQAUEQZ-UHFFFAOYSA-N 0.000 claims description 5
- 229960002317 succinimide Drugs 0.000 claims description 4
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 125000003118 aryl group Chemical group 0.000 claims description 3
- 239000011575 calcium Substances 0.000 claims description 3
- 229910052791 calcium Inorganic materials 0.000 claims description 3
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- YGSDEFSMJLZEOE-UHFFFAOYSA-M salicylate Chemical compound OC1=CC=CC=C1C([O-])=O YGSDEFSMJLZEOE-UHFFFAOYSA-M 0.000 claims description 3
- 229960001860 salicylate Drugs 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- 125000000217 alkyl group Chemical group 0.000 claims description 2
- 239000002356 single layer Substances 0.000 claims description 2
- 239000002105 nanoparticle Substances 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 2
- 239000000314 lubricant Substances 0.000 abstract 1
- 239000002131 composite material Substances 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000012188 paraffin wax Substances 0.000 description 3
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 description 2
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 description 2
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 description 2
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 description 2
- 239000005642 Oleic acid Substances 0.000 description 2
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 description 2
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 2
- LDVVTQMJQSCDMK-UHFFFAOYSA-N 1,3-dihydroxypropan-2-yl formate Chemical compound OCC(CO)OC=O LDVVTQMJQSCDMK-UHFFFAOYSA-N 0.000 description 1
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000007770 graphite material Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 235000010446 mineral oil Nutrition 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000010689 synthetic lubricating oil Substances 0.000 description 1
Abstract
The invention provides high-temperature-resistant universal extreme pressure lubricating grease, which belongs to the technical field of lubricating materials, and is prepared by uniformly mixing base oil and a thickening agent, adding an antioxidant, a clean dispersant and modified graphene, and uniformly mixing again to obtain a component A; uniformly mixing an additive, sodium hydroxide and neopentyl glycol at 50 ℃ to obtain a component B; and uniformly mixing the component A and the component B to obtain the high-temperature-resistant universal extreme pressure lubricating grease. The nano-scale particles in the lubricating grease provided by the invention are uniformly dispersed, so that the lubricating grease fully utilizes a nano-scale lubricating film, and the condition of film breakage cannot occur under extreme pressure: meanwhile, the lubricant has a high lubricating effect, obviously prolongs the working time at high temperature, has high extreme pressure resistance and is suitable for various working environments.
Description
Technical Field
The invention belongs to the technical field of lubricating materials, and particularly relates to high-temperature-resistant universal extreme pressure lubricating grease.
Background
The lubricating grease is thick grease-like semisolid and is used for a friction part of a machine to play roles of lubrication and sealing. The paint is also used on the metal surface, and plays roles in filling gaps and preventing rust; it is mainly prepared by blending mineral oil or synthetic lubricating oil and a thickening agent.
At present, with the use of advanced equipment technology and the introduction of advanced equipment, the requirements on the working temperature of a plurality of lubricating parts are higher and higher, and higher requirements on the high-temperature resistance of the lubricating grease are also provided. Most of the common greases are softened, melted or volatilized at high temperature, so that the lubricating effect is lost, and the machines are worn, the noise is increased, and the seizure is caused, so that the smooth production is difficult. When the traditional lubricating grease is used, the traditional lubricating grease is coated on metal surfaces which are mutually contacted, and the characteristic of axial and radial combination is carried, namely the extrudability of the lubricating grease. In the prior art, a soap base is often added into base oil to enhance the extrusion performance of the lubricating grease, however, the addition of too much soap base is difficult to ensure whether other physical properties of the lubricating grease are suitable for the addition amount of the soap base, and sometimes even the effect is extremely contradictory. The research on the lubricating grease working at high temperature has great significance in further improving the high temperature resistance of the high temperature lubricating grease and the like. At present, the traditional high-temperature lubricating grease has poor lubricating performance and wear resistance and needs to be researched.
Therefore, a novel lubricating grease with high temperature resistance, wide application range and extreme pressure resistance is needed, is suitable for occasions with higher requirements on temperature, precision and bearing capacity, has stable lubricating performance and longer service cycle.
Disclosure of Invention
The invention aims to provide high-temperature-resistant universal extreme pressure type lubricating grease, wherein nano-scale particles in the lubricating grease are uniformly dispersed, so that a nano-scale lubricating film is fully utilized by the lubricating grease, and the condition of film breakage cannot occur under extreme pressure.
In order to realize the purpose, the invention provides the following technical scheme:
the invention provides high-temperature-resistant universal extreme pressure type lubricating grease which is prepared from the following raw materials in parts by weight: 50-80 parts of base oil, 8-15 parts of thickening agent, 20-40 parts of additive, 1-5 parts of sodium hydroxide, 12-30 parts of neopentyl glycol, 2-5 parts of antioxidant, 6-12 parts of detergent dispersant and 0.01-0.1 part of modified graphene.
Preferably, the base oil is prepared by mixing paraffin base oil, naphthenic base oil and poly alpha-olefin base oil according to a mass ratio of 1.
Preferably, the thickener is a soap-based thickener or an organic thickener.
Preferably, the soap-based thickener is one or more of lithium complex, calcium complex, aluminum complex or titanium complex; the organic thickening agent is one or more of aryl cheek, amide, phthalocyanine or fluorocarbon.
Preferably, the preparation method of the additive comprises the following steps: tricresyl phosphate, sulfurized lard, potassium metaborate and ferric oxide microspheres in a mass ratio of 1: 0.5:0.01, then adding the polymethyl siloxane and the stearic acid monoglyceride, and performing anaerobic ball milling for 40min.
Preferably, the detergent dispersant is any one of petroleum sulfonate, alkyl phenate, salicylate and succinimide.
Preferably, the preparation method of the modified graphene comprises the following steps: mixing octadecenoic acid, octadecanoic acid and graphene according to a mass ratio of 3.
Preferably, the dosage of the sulfuric acid is 3 to 5 times of the mass of the graphene.
Preferably, the graphene is one of single-layer graphene, double-layer graphene or few-layer graphene.
The invention also provides a preparation method of the high-temperature-resistant universal extreme pressure type lubricating grease, which comprises the following steps:
1) Weighing the raw materials in parts by weight;
2) Uniformly mixing base oil and a thickening agent, adding an antioxidant, a clean dispersant and modified graphene, and uniformly mixing again to obtain a component A;
3) Uniformly mixing an additive, sodium hydroxide and neopentyl glycol at 50 ℃ to obtain a component B;
4) And uniformly mixing the component A and the component B to obtain the high-temperature-resistant universal extreme pressure lubricating grease.
The invention has the beneficial technical effects that:
the invention provides a high-temperature-resistant universal extreme pressure type lubricating grease, which is prepared by uniformly mixing base oil and a thickening agent, adding an antioxidant, a clean dispersant and modified graphene, and uniformly mixing again to obtain a component A; uniformly mixing an additive, sodium hydroxide and neopentyl glycol at 50 ℃ to obtain a component B; and uniformly mixing the component A and the component B to obtain the high-temperature-resistant universal extreme pressure lubricating grease. The high-temperature-resistant universal extreme pressure lubricating grease prepared by the invention overcomes the problem that nano-scale particles are unevenly distributed in the lubricating grease and are easy to agglomerate, has a high lubricating effect, obviously prolongs the working time at high temperature by adding the modified graphene, has high extreme pressure resistance, and is suitable for various working environments. The invention adopts simpler production process, has less working procedures, lower requirement on equipment, lower production cost and high production efficiency, and is suitable for industrial production.
Detailed Description
The invention provides high-temperature-resistant universal extreme pressure type lubricating grease which is prepared from the following raw materials in parts by weight: 50-80 parts of base oil, 8-15 parts of thickening agent, 20-40 parts of additive, 1-5 parts of sodium hydroxide, 12-30 parts of neopentyl glycol, 2-5 parts of antioxidant, 6-12 parts of detergent dispersant and 0.01-0.1 part of modified graphene.
In the present invention, the raw materials are preferably: 60-70 parts of base oil, 9-13 parts of a thickening agent, 25-35 parts of an additive, 2-5 parts of sodium hydroxide, 15-25 parts of neopentyl glycol, 3-4 parts of an antioxidant, 8-10 parts of a detergent dispersant and 0.05-0.08 part of modified graphene; more preferably: 65 parts of base oil, 10 parts of thickening agent, 30 parts of additive, 4 parts of sodium hydroxide, 20 parts of neopentyl glycol, 4 parts of antioxidant, 9 parts of detergent dispersant and 0.06 part of modified graphene.
In the invention, the base oil is prepared by mixing paraffin base oil, naphthenic base oil and poly alpha-olefin base oil according to a mass ratio of 1. The kinematic viscosity of the base oil prepared according to the special proportion is 15-40 centistokes at 120 ℃.
In the invention, the thickener is a soap-based thickener or an organic thickener, the soap-based thickener is preferably one or more of composite lithium, composite calcium, composite aluminum or composite titanium, and more preferably is a combination of composite lithium and composite titanium; the organic thickening agent is preferably one or more of aryl cheek, amide, phthalocyanine or fluorocarbon; more preferably a combination of an amide and a phthalocyanine.
In the invention, the preparation method of the additive comprises the following steps: tricresyl phosphate, sulfurized lard, potassium metaborate and ferric oxide microspheres in a mass ratio of 1: 0.5:0.01, then adding the polymethyl siloxane and the stearic acid monoglyceride, and performing anaerobic ball milling for 40min.
The additive prepared by using the vulcanized lard as the raw material has the capability of improving the friction resistance, and the lard and the sodium hydroxide react at the same time of generating temperature through friction to generate oleic acid, and the oleic acid reacts with the neopentyl glycol again to form ester, so that the lubricating effect is improved again, and simultaneously the heat generated during friction is dispersed.
In the present invention, the detergent dispersant is preferably any one of petroleum sulfonate, alkylphenol salt, salicylate, and succinimide, and more preferably petroleum sulfonate.
In the invention, the preparation method of the modified graphene comprises the following steps: mixing octadecenoic acid, octadecanoic acid and graphene according to a mass ratio of 3.
In the invention, the dosage of the sulfuric acid is preferably 4 times of the mass of the graphene, the reaction temperature is preferably 45 ℃, and the washing times are preferably 4 times; the graphene is preferably 3-5-layer graphene, more preferably 4-layer graphene.
The modified graphene prepared by the invention overcomes the problems of easy agglomeration and difficult dispersion in lubricating oil, and simultaneously utilizes the excellent heat conductivity of the graphite material to ensure that heat generated by metal parts during friction is dispersed in lubricating grease, thereby preventing the lubricating film from being damaged by local overheating.
The invention also provides a preparation method of the high-temperature-resistant universal extreme pressure type lubricating grease, which comprises the following steps:
1) Weighing the raw materials in parts by weight;
2) Uniformly mixing the base oil and the thickening agent, adding the antioxidant, the detergent dispersant and the modified graphene, and uniformly mixing again to obtain a component A;
3) Uniformly mixing an additive, sodium hydroxide and neopentyl glycol at 50 ℃ to obtain a component B;
4) And uniformly mixing the component A and the component B to obtain the high-temperature-resistant universal extreme pressure lubricating grease.
In the invention, the component A and the component B are mixed in a way that the component B is added in a cutting mixer before the component A is added.
According to the invention, the base oil and the modified graphene are mixed, then the additive is mixed with the sodium hydroxide and the neopentyl glycol to respectively obtain two components, the components are fully reacted and fused to play a role, the modified graphene is uniformly dispersed in the base oil to avoid interference of other nano-scale particles of the additive, and then the mixed additive is added to disperse the nano-scale particles in the modified graphene base oil to form uniform dispersion of the graphene and the nano-scale particles.
Example 1
1) Preparing base oil: 720g of a paraffinic base oil, 2200g of a naphthenic base oil and 3600g of a polyalphaolefin base oil were put into a high-speed mixer and mixed uniformly.
2) Preparing an additive: 220g of tricresyl phosphate, 2200g of lard sulfide, 100g of potassium metaborate and 22g of ferric oxide microspheres are added into a high-speed mixer to be uniformly mixed, and then 200g of polymethylsiloxane and 200g of stearic acid monoglyceride are added to be subjected to anaerobic ball milling for 40min.
3) Preparing modified graphene: mixing 2g of octadecenoic acid, 3.3g of octadecanoic acid and 0.7g of three-layer graphene, slowly dropwise adding 3ml of sulfuric acid, reacting for 2 hours at 45 ℃, filtering, washing for 4 times by using absolute ethyl alcohol, drying, and fully crushing the blocky modified graphene in a superfine crusher to obtain the modified graphene.
4) Uniformly mixing the base oil prepared in the step 1), 500g of composite lithium and 500g of composite titanium in a high-speed mixer, adding 400g of antioxidant, 900g of petroleum sulfonate and the modified graphene prepared in the step 3), and continuously mixing for 50min at a high speed to obtain a component A.
5) The additive from step 2) was mixed with 400g of sodium hydroxide and 2000g of neopentyl glycol at 50 ℃ for 50min to give component B.
6) The component A is placed in a high-speed mixer, the mixer is started, the component B is added, and the mixture is mixed for 2 hours to obtain the high-temperature-resistant universal extreme pressure lubricating grease.
Example 2
1) Preparing base oil: 555g of paraffin base oil, 1600g of naphthene base oil and 2800g of poly-alpha-olefin base oil were put into a high-speed mixer and mixed uniformly.
2) Preparing an additive: 200g of tricresyl phosphate, 2000g of lard sulfide, 100g of potassium metaborate and 20g of ferric oxide microspheres are added into a high-speed mixer to be uniformly mixed, and then 200g of polymethylsiloxane and 200g of stearic acid monoglyceride are added to be subjected to anaerobic ball milling for 40min.
3) Preparing modified graphene: mixing 0.5g of octadecenoic acid, 0.3g of octadecanoic acid and 0.1g of three-layer graphene, slowly dropwise adding 1ml of sulfuric acid, reacting for 2 hours at 45 ℃, filtering, washing for 3 times by using absolute ethyl alcohol, drying, and fully crushing the blocky modified graphene in a superfine crusher to obtain the modified graphene.
4) Uniformly mixing the base oil prepared in the step 1) with 300g of amide and 300g of phthalocyanine in a high-speed mixer, adding 500g of antioxidant, 1100g of petroleum sulfonate and the modified graphene prepared in the step 3), and continuously mixing at a high speed for 50min to obtain the component A.
5) The additive obtained in step 2) was mixed with 100g of sodium hydroxide and 500g of neopentyl glycol at 50 ℃ for 50min to give component B.
6) Firstly, the component A is placed in a high-speed mixer, the mixer is started, then the component B is added, and the mixture is mixed for 2 hours to obtain the high-temperature-resistant universal extreme pressure lubricating grease.
Example 3
1) Preparing base oil: 1000g of a paraffinic base oil, 3000g of a naphthenic base oil and 5000g of a polyalphaolefin base oil were put into a high-speed mixer and mixed uniformly.
2) Preparing an additive: 400g of tricresyl phosphate, 4000g of lard sulfide, 200g of potassium metaborate and 40g of ferric oxide microspheres are added into a high-speed mixer to be uniformly mixed, and then 300g of polymethylsiloxane and 300g of monoglyceride stearate are added for anaerobic ball milling for 40min.
3) Preparing modified graphene: mixing 3g of octadecenoic acid, 5g of octadecanoic acid and 1g of three-layer graphene, slowly dropwise adding 4ml of sulfuric acid, reacting for 2 hours at 45 ℃, filtering, washing for 5 times by using absolute ethyl alcohol, drying, and fully crushing the blocky modified graphene in a superfine crusher to obtain the modified graphene.
4) Uniformly mixing the base oil prepared in the step 1) with 1200g of composite lithium and 1200g of amide in a high-speed mixer, then adding 500g of antioxidant, 100g of succinimide and the modified graphene prepared in the step 3), and continuously mixing for 50min at a high speed to obtain the component A.
5) The additive obtained in step 2) was mixed with 500g of sodium hydroxide and 2500g of neopentyl glycol at 50 ℃ for 50min to give component B.
6) Firstly, the component A is placed in a high-speed mixer, the mixer is started, then the component B is added, and the mixture is mixed for 2 hours to obtain the high-temperature-resistant universal extreme pressure lubricating grease.
Example 4
The embodiment provides a high-temperature-resistant universal extreme pressure type lubricating grease which is different from that in embodiment 1 in that the component A does not contain modified graphene.
Example 5
This example provides a high temperature resistant universal extreme pressure type lubricating grease which differs from that of example 1 in that component B does not contain sodium hydroxide and neopentyl glycol.
Example 6
The embodiment provides a high-temperature-resistant universal extreme pressure type lubricating grease which is different from that in embodiment 1 in that base oil, additives, modified graphene, lithium complex, titanium complex, an antioxidant, petroleum sulfonate, sodium hydroxide and neopentyl glycol are simultaneously placed in a high-speed mixer for mixing.
The results are shown in table 1:
table 1: performance test meter
Claims (10)
1. The high-temperature-resistant universal extreme-pressure lubricating grease is characterized by comprising the following raw materials in parts by weight: 50-80 parts of base oil, 8-15 parts of thickening agent, 20-40 parts of additive, 1-5 parts of sodium hydroxide, 12-30 parts of neopentyl glycol, 2-5 parts of antioxidant, 6-12 parts of detergent dispersant and 0.01-0.1 part of modified graphene.
2. The lubricating grease as set forth in claim 1, wherein the base oil is a paraffinic base oil, a naphthenic base oil, and a polyalphaolefin base oil mixed in a mass ratio of 1.
3. The lubricating grease as claimed in claim 1, wherein the thickener is a soap-based thickener or an organic thickener.
4. The lubricating grease as claimed in claim 3, wherein the soap-based thickener is one or more of lithium complex, calcium complex, aluminum complex or titanium complex; the organic thickening agent is one or more of aryl cheek, amide, phthalocyanine or fluorocarbon.
5. The lubricating grease as set forth in claim 1, wherein the additive is prepared by a method comprising: tricresyl phosphate, sulfurized lard, potassium metaborate and ferric oxide microspheres in a mass ratio of 1: 0.5:0.01, then adding the polymethylsiloxane and the stearic acid monoglyceride, and carrying out anaerobic ball milling for 40min.
6. The lubricating grease as claimed in claim 1, wherein the detergent dispersant is any one of petroleum sulfonate, alkyl phenate, salicylate or succinimide.
7. The lubricating grease as claimed in claim 1, wherein the preparation method of the modified graphene is: mixing octadecenoic acid, octadecanoic acid and graphene according to a mass ratio of 3.
8. The lubricating grease as set forth in claim 7, wherein the amount of sulfuric acid is 3 to 5 times the mass of graphene.
9. The lubricating grease as claimed in claim 7, wherein the graphene is one of single-layer graphene, double-layer graphene or few-layer graphene.
10. The method for preparing high temperature resistant universal extreme pressure type lubricating grease as claimed in claim 1, which comprises the steps of:
1) Weighing the raw materials in parts by weight;
2) Uniformly mixing base oil and a thickening agent, adding an antioxidant, a clean dispersant and modified graphene, and uniformly mixing again to obtain a component A;
3) Uniformly mixing an additive, sodium hydroxide and neopentyl glycol at 50 ℃ to obtain a component B;
4) And uniformly mixing the component A and the component B to obtain the high-temperature-resistant universal extreme pressure lubricating grease.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211691131.XA CN115895761A (en) | 2022-12-26 | 2022-12-26 | High-temperature-resistant universal polar pressure type lubricating grease |
Applications Claiming Priority (1)
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| US20110046027A1 (en) * | 2009-08-19 | 2011-02-24 | Aruna Zhamu | Nano graphene-modified lubricant |
| CN104560266A (en) * | 2013-10-28 | 2015-04-29 | 中国石油化工股份有限公司 | Composite calcium base grease and preparation method thereof |
| CN109401823A (en) * | 2018-11-06 | 2019-03-01 | 唐山久鑫科技有限公司 | A kind of graphene lubricating grease and its preparation method and application |
| CN109504498A (en) * | 2018-12-12 | 2019-03-22 | 徐欣婷 | A kind of lube oil additive and preparation method thereof |
| CN111363609A (en) * | 2020-05-06 | 2020-07-03 | 李义飞 | Modified graphene lubricating oil and preparation method thereof |
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| US20110046027A1 (en) * | 2009-08-19 | 2011-02-24 | Aruna Zhamu | Nano graphene-modified lubricant |
| CN104560266A (en) * | 2013-10-28 | 2015-04-29 | 中国石油化工股份有限公司 | Composite calcium base grease and preparation method thereof |
| CN109401823A (en) * | 2018-11-06 | 2019-03-01 | 唐山久鑫科技有限公司 | A kind of graphene lubricating grease and its preparation method and application |
| CN109504498A (en) * | 2018-12-12 | 2019-03-22 | 徐欣婷 | A kind of lube oil additive and preparation method thereof |
| CN111363609A (en) * | 2020-05-06 | 2020-07-03 | 李义飞 | Modified graphene lubricating oil and preparation method thereof |
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