CN116656413A - Composite barium-based lubricating grease composition and preparation method thereof - Google Patents
Composite barium-based lubricating grease composition and preparation method thereof Download PDFInfo
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- CN116656413A CN116656413A CN202310628172.2A CN202310628172A CN116656413A CN 116656413 A CN116656413 A CN 116656413A CN 202310628172 A CN202310628172 A CN 202310628172A CN 116656413 A CN116656413 A CN 116656413A
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- acid
- barium
- grease composition
- thickening agent
- lubricating grease
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- 239000004519 grease Substances 0.000 title claims abstract description 54
- 229910052788 barium Inorganic materials 0.000 title claims abstract description 49
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 title claims abstract description 49
- 239000002131 composite material Substances 0.000 title claims abstract description 39
- 230000001050 lubricating effect Effects 0.000 title claims abstract description 34
- 239000000203 mixture Substances 0.000 title claims abstract description 23
- 238000002360 preparation method Methods 0.000 title claims description 11
- 239000002253 acid Substances 0.000 claims abstract description 46
- 239000002562 thickening agent Substances 0.000 claims abstract description 38
- 239000002199 base oil Substances 0.000 claims abstract description 18
- 239000002904 solvent Substances 0.000 claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims description 24
- RQPZNWPYLFFXCP-UHFFFAOYSA-L barium dihydroxide Chemical group [OH-].[OH-].[Ba+2] RQPZNWPYLFFXCP-UHFFFAOYSA-L 0.000 claims description 19
- 229910001863 barium hydroxide Inorganic materials 0.000 claims description 19
- ULQISTXYYBZJSJ-UHFFFAOYSA-N 12-hydroxyoctadecanoic acid Chemical compound CCCCCCC(O)CCCCCCCCCCC(O)=O ULQISTXYYBZJSJ-UHFFFAOYSA-N 0.000 claims description 18
- 238000002156 mixing Methods 0.000 claims description 16
- 150000002430 hydrocarbons Chemical group 0.000 claims description 14
- 238000006243 chemical reaction Methods 0.000 claims description 12
- CXMXRPHRNRROMY-UHFFFAOYSA-N sebacic acid Chemical compound OC(=O)CCCCCCCCC(O)=O CXMXRPHRNRROMY-UHFFFAOYSA-N 0.000 claims description 12
- 239000004215 Carbon black (E152) Substances 0.000 claims description 11
- 229930195733 hydrocarbon Natural products 0.000 claims description 11
- 229940114072 12-hydroxystearic acid Drugs 0.000 claims description 9
- 238000007670 refining Methods 0.000 claims description 7
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 claims description 6
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 claims description 6
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 6
- POULHZVOKOAJMA-UHFFFAOYSA-N dodecanoic acid Chemical compound CCCCCCCCCCCC(O)=O POULHZVOKOAJMA-UHFFFAOYSA-N 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 6
- 229930195729 fatty acid Natural products 0.000 claims description 6
- 239000000194 fatty acid Substances 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 6
- IPCSVZSSVZVIGE-UHFFFAOYSA-N hexadecanoic acid Chemical compound CCCCCCCCCCCCCCCC(O)=O IPCSVZSSVZVIGE-UHFFFAOYSA-N 0.000 claims description 6
- -1 hydroxy fatty acid Chemical class 0.000 claims description 6
- BDJRBEYXGGNYIS-UHFFFAOYSA-N nonanedioic acid Chemical compound OC(=O)CCCCCCCC(O)=O BDJRBEYXGGNYIS-UHFFFAOYSA-N 0.000 claims description 6
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 claims description 5
- 239000002480 mineral oil Substances 0.000 claims description 4
- 235000010446 mineral oil Nutrition 0.000 claims description 4
- 239000003921 oil Substances 0.000 claims description 4
- 239000005711 Benzoic acid Substances 0.000 claims description 3
- 239000005639 Lauric acid Substances 0.000 claims description 3
- 235000021314 Palmitic acid Nutrition 0.000 claims description 3
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 3
- 235000021355 Stearic acid Nutrition 0.000 claims description 3
- 239000007864 aqueous solution Substances 0.000 claims description 3
- 235000010233 benzoic acid Nutrition 0.000 claims description 3
- 239000007795 chemical reaction product Substances 0.000 claims description 3
- 238000000354 decomposition reaction Methods 0.000 claims description 3
- 239000010696 ester oil Substances 0.000 claims description 3
- WQEPLUUGTLDZJY-UHFFFAOYSA-N n-Pentadecanoic acid Natural products CCCCCCCCCCCCCCC(O)=O WQEPLUUGTLDZJY-UHFFFAOYSA-N 0.000 claims description 3
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 3
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 3
- 229920013639 polyalphaolefin Polymers 0.000 claims description 3
- 229920000570 polyether Polymers 0.000 claims description 3
- 229920001296 polysiloxane Polymers 0.000 claims description 3
- 239000008117 stearic acid Substances 0.000 claims description 3
- TUNFSRHWOTWDNC-HKGQFRNVSA-N tetradecanoic acid Chemical compound CCCCCCCCCCCCC[14C](O)=O TUNFSRHWOTWDNC-HKGQFRNVSA-N 0.000 claims description 3
- 150000002762 monocarboxylic acid derivatives Chemical class 0.000 claims description 2
- 229920000642 polymer Polymers 0.000 claims 1
- 238000004321 preservation Methods 0.000 claims 1
- 239000003513 alkali Substances 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 description 10
- 239000000047 product Substances 0.000 description 7
- 238000000227 grinding Methods 0.000 description 6
- 238000003756 stirring Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 230000035484 reaction time Effects 0.000 description 4
- 238000010669 acid-base reaction Methods 0.000 description 3
- 239000000344 soap Substances 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- 239000002585 base Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 150000004668 long chain fatty acids Chemical class 0.000 description 2
- 238000005649 metathesis reaction Methods 0.000 description 2
- 238000007127 saponification reaction Methods 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 159000000009 barium salts Chemical class 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 150000001991 dicarboxylic acids Chemical class 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 150000002763 monocarboxylic acids Chemical class 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
- C10M169/02—Mixtures of base-materials and thickeners
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
- C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
- C10M2203/1006—Petroleum or coal fractions, e.g. tars, solvents, bitumen used as base material
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
- C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
- C10M2205/0206—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers used as base material
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/04—Ethers; Acetals; Ortho-esters; Ortho-carbonates
- C10M2207/0406—Ethers; Acetals; Ortho-esters; Ortho-carbonates used as base material
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/10—Carboxylix acids; Neutral salts thereof
- C10M2207/12—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
- C10M2207/125—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids
- C10M2207/126—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids monocarboxylic
- C10M2207/1265—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids monocarboxylic used as thickening agent
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/10—Carboxylix acids; Neutral salts thereof
- C10M2207/12—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
- C10M2207/125—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids
- C10M2207/127—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids polycarboxylic
- C10M2207/1276—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids polycarboxylic used as thickening agent
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/10—Carboxylix acids; Neutral salts thereof
- C10M2207/12—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
- C10M2207/125—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids
- C10M2207/128—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids containing hydroxy groups; Ethers thereof
- C10M2207/1285—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids containing hydroxy groups; Ethers thereof used as thickening agents
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/10—Carboxylix acids; Neutral salts thereof
- C10M2207/14—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to carbon atoms of six-membered aromatic rings
- C10M2207/141—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to carbon atoms of six-membered aromatic rings monocarboxylic
- C10M2207/1415—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to carbon atoms of six-membered aromatic rings monocarboxylic used as thickening agent
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/10—Carboxylix acids; Neutral salts thereof
- C10M2207/14—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to carbon atoms of six-membered aromatic rings
- C10M2207/142—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to carbon atoms of six-membered aromatic rings polycarboxylic
- C10M2207/1426—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to carbon atoms of six-membered aromatic rings polycarboxylic used as thickening agent
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/28—Esters
- C10M2207/2805—Esters used as base material
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
- C10M2229/04—Siloxanes with specific structure
- C10M2229/0405—Siloxanes with specific structure used as base material
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2050/00—Form in which the lubricant is applied to the material being lubricated
- C10N2050/10—Semi-solids; greasy
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Lubricants (AREA)
Abstract
The application relates to a composite barium-based lubricating grease composition, which comprises a thickening agent and base oil, wherein the thickening agent comprises high-molecular acid, medium-low-molecular acid, alkali, solvent and water.
Description
Technical Field
The application relates to the technical field of lubricant preparation, in particular to a composite barium-based lubricating grease composition and a preparation method thereof.
Background
The composite barium-based thickening agent is specially used for producing composite barium-based lubricating grease, and the composite barium-based lubricating grease is novel high-temperature lubricating grease, is prepared from two or more than two kinds of acid and barium hydroxide to generate composite barium soap which is thickened and refined medium-viscosity mineral oil, and has excellent mechanical stability, colloid stability, oxidation stability, water resistance and outstanding high-temperature stability. The production technology of the composite barium-based lubricating grease has been monopolized abroad for a long time, and the composite barium-based lubricating grease is rarely produced in China, and the main reason is that the production technology of the composite barium-based lubricating grease is complex;
the thickener of the composite barium-based lubricating grease is different from Shan Bei lubricating grease, is not composed of pure long-chain fatty acid barium, but is formed by co-crystallizing long-chain fatty acid barium soap and low-molecular acid barium salt under a certain technological condition, and is characterized in that a thickener framework cannot melt and collapse under a higher temperature condition (220 ℃), so that the lubricating grease has a higher dropping point level. At present, the preparation of the composite barium lubricating grease is basically realized through acid-base reaction in base oil, and the preparation method can be divided into an atmospheric pressure kettle method, a pressure kettle method and a contactor method according to different production equipment, wherein the atmospheric pressure kettle method has the simplest requirements on equipment, and the production equipment has relatively low cost. According to different feeding modes in the normal pressure kettle method, the production process can be divided into a two-step method and a one-step method, wherein the one-step method simplifies the process steps to a certain extent compared with the two-step method, but the two common pressure kettle methods have the defects of long time consumption, high energy consumption and difficult control (easy kettle discharge);
the pre-thickener method (namely soap powder method) can solve the defects of preparing the composite barium grease by a two-step method and a one-step method in base oil, the pre-thickener method is a technology for preparing the thickener required by the grease in advance in a non-oil phase environment, dispersing the thickener in the base oil, and carrying out heating refining and cooling treatment to obtain the grease. The technology for preparing the composite barium grease by the pre-thickening agent method still needs to be improved so far.
The existing process for producing the composite barium-based lubricating grease is to carry out acid-base reaction saponification in base oil, so that the reaction time is long and the risk of kettle overflow exists;
the application develops the composite barium-based thickener for producing the composite barium-based lubricating grease, and then the composite barium-based lubricating grease is produced by the thickener, so that the difficulty in producing the composite barium-based lubricating grease can be greatly reduced, the production process is simplified, and the production efficiency is improved.
Disclosure of Invention
First, the technical problem to be solved
In view of the above-mentioned shortcomings and disadvantages of the prior art, the present application provides a composite barium-based grease composition and a preparation method thereof, which solves the technical problems of acid-base reaction saponification in base oil, long reaction time and risk of kettle overflow in the existing process for producing composite barium-based grease.
(II) technical scheme
In order to achieve the above purpose, the main technical scheme adopted by the application comprises the following steps: the embodiment of the application provides a composite barium-based lubricating grease composition, which comprises a thickening agent and base oil, wherein the thickening agent comprises high-molecular acid, medium-low-molecular acid, alkali, hydrocarbon solvent and water.
Preferably, the high molecular acid is C12-C25 fatty acid and/or hydroxy fatty acid, and can be one or more of lauric acid, myristic acid, palmitic acid, stearic acid and 12-hydroxy stearic acid.
Preferably, the medium-low molecular acid is a monocarboxylic acid or a dicarboxylic acid of a C6-C10 hydrocarbon group, and can be one or more of benzoic acid, terephthalic acid, azelaic acid and sebacic acid.
Preferably, the weight ratio of the high molecular acid to the low molecular acid is preferably 1:0.1-1.
Preferably, the base is barium hydroxide.
Preferably, the base oil comprises one or more of mineral oil, hydrogenated oil, polyalphaolefin, ester oil, polyether and polysiloxane.
Preferably, the solvent is one or more of an aqueous solution and a hydrocarbon solvent.
On the other hand, the embodiment of the application also provides a preparation method of the composite barium-based lubricating grease, which comprises the following steps:
step A, prefabricating a thickening agent;
wherein, the step A comprises the following steps:
s1, mixing 12-hydroxystearic acid with a hydrocarbon solvent for the first time to obtain an acid liquor A;
s2, mixing dicarboxylic acid and water for the second time to obtain acid liquor B;
s3, carrying out a first-step reaction on the acid liquor A and barium hydroxide to obtain a mixed liquor;
s4, continuously adding the acid liquor B and adding the barium hydroxide again in the mixed liquor, wherein the barium hydroxide is slowly added and the double decomposition reaction is carried out until the reaction is completed;
s5, filtering and drying the obtained reaction product to obtain a thickening agent;
step B, mixing: and mixing the thickening agent and the base oil, and refining at 150-200 ℃ after the full mixing is finished to obtain the lubricating grease composition.
Preferably, the mass content of the thickening agent in the lubricating grease composition is 10-35%.
Preferably, the refining has a holding time of 10 to 30 minutes.
Preferably, the metathesis reaction is for a period of 1 to 10 hours.
(III) beneficial effects
The beneficial effects of the application are as follows: the composite barium-based lubricating grease composition and the preparation method thereof can obtain a finished product of the composite barium-based lubricating grease by prefabricating the thickening agent and mixing the thickening agent with the base oil, can greatly reduce the difficulty in producing the composite barium-based lubricating grease, has shorter reaction time, does not have the risk of overflowing a kettle, simplifies the production process, improves the production efficiency, and ensures that the dripping point of the obtained lubricating grease composition is more than 260 ℃.
Detailed Description
In order to better understand the above technical solution, exemplary embodiments of the present application will be described in more detail below. While exemplary embodiments of the present application have been disclosed in the detailed description, it should be understood that the application may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the application to those skilled in the art.
The application provides a composite barium-based lubricating grease composition and a preparation method thereof, wherein the composite barium-based lubricating grease composition comprises a thickening agent and base oil, and the thickening agent comprises high-molecular acid, medium-low-molecular acid, alkali, hydrocarbon solvent and water.
In embodiments of the present disclosure, the polymeric acid is a C12-C25 fatty acid and/or hydroxy fatty acid, which may be one or more of lauric acid, myristic acid, palmitic acid, stearic acid, 12-hydroxystearic acid.
In embodiments of the present disclosure, the medium and low molecular acids are monocarboxylic or dicarboxylic acids with C6-C10 hydrocarbon groups, which may be one or more of benzoic acid, terephthalic acid, azelaic acid, sebacic acid.
In embodiments of the present disclosure, the weight ratio of the high molecular acid to the low molecular acid is preferably 1:0.1-1.
In an embodiment of the present disclosure, the base is barium hydroxide.
In embodiments of the present disclosure, the base oil comprises one or more of mineral oil, hydrogenated oil, polyalphaolefin, ester oil, polyether, and polysiloxane.
In an embodiment of the present disclosure, the solvent is one or more of an aqueous solution, a hydrocarbon solvent.
On the other hand, in the embodiment of the present disclosure, a method for preparing a complex barium-based grease is also provided, which includes the following steps:
step A, prefabricating a thickening agent;
wherein, the step A comprises the following steps:
s1, mixing 12-hydroxystearic acid with a hydrocarbon solvent for the first time to obtain an acid liquor A;
s2, mixing dicarboxylic acid and water for the second time to obtain acid liquor B;
s3, carrying out a first-step reaction on the acid liquor A and barium hydroxide to obtain a mixed liquor;
s4, continuously adding the acid liquor B and adding the barium hydroxide again in the mixed liquor, wherein the barium hydroxide is slowly added and the double decomposition reaction is carried out until the reaction is completed;
s5, filtering and drying the obtained reaction product to obtain a thickening agent;
step B, mixing: and mixing the thickening agent and the base oil, and refining at 150-200 ℃ after the full mixing is finished to obtain the lubricating grease composition.
In the embodiment of the disclosure, the mass content of the thickening agent in the lubricating grease composition is 10-35%.
In the embodiment of the disclosure, the refining has a holding time of 10 to 30 minutes.
In embodiments of the present disclosure, the metathesis reaction is for a time of 1 to 10 hours.
The technical scheme of the application will be described in detail by way of example, wherein:
example 1:
s1, adding 20g of 12-hydroxystearic acid into 40mL of hydrocarbon solvent, stirring and dispersing uniformly to obtain acid liquor A;
s2, adding 8.7g of sebacic acid into 30mL of water to obtain an acid liquor B;
s3, slowly adding 9.5g of barium hydroxide into the acid liquor A, and stirring at 80 ℃ for reaction for 2 hours;
s4, adding the residual acid liquor B, slowly adding 9g of barium hydroxide, and continuing to react at 80 ℃ until the reaction is completed;
s5, filtering, washing and drying the reacted product, and grinding and crushing the product to be powdery (200-1000 meshes) to obtain the composite barium pre-thickening agent;
and S6, adding 20g of the prefabricated composite barium thickening agent into 60g of base oil, heating to 180 ℃, keeping the temperature for 15 minutes, and grinding twice by using a three-roller machine to form grease.
Example 2:
s1, adding 30g of 12-hydroxystearic acid into 50mL of hydrocarbon solvent, stirring and dispersing uniformly to obtain acid liquor A;
s2, adding 16.8g of sebacic acid into 50mL of water to obtain an acid liquor B;
s3, slowly adding 12g of barium hydroxide into the acid liquor A, and stirring at 80 ℃ for reaction for 2 hours;
s4, adding the residual acid liquor B, slowly adding 15g of barium hydroxide, and continuing to react at 80 ℃ until the reaction is completed;
s5, filtering, washing and drying the reacted product, and grinding and crushing the product to be powdery (200-1000 meshes) to obtain the composite barium pre-thickening agent;
s6, adding 30g of the prefabricated composite barium thickening agent into 70g of base oil, heating to 180 ℃, keeping the temperature for 15 minutes, and grinding twice by using a three-roller machine to form grease.
Example 3:
s1, adding 40g of 12-hydroxystearic acid into 60mL of hydrocarbon solvent, stirring and dispersing uniformly to obtain acid liquor A;
s2, adding 17g of sebacic acid into 50mL of water to obtain an acid liquor B;
s3, slowly adding 14g of barium hydroxide into the acid liquor A, and stirring at 80 ℃ for reaction for 2 hours;
s4, adding the residual acid liquor B, slowly adding the residual 12g of barium hydroxide, and continuing to react at 80 ℃ until the reaction is completed;
s5, filtering, washing and drying the reacted product, and grinding and crushing the product to be powdery (200-1000 meshes) to obtain the composite barium pre-thickening agent;
and S6, adding 40g of the prefabricated composite barium thickening agent into 80g of base oil, heating to 180 ℃, keeping the temperature for 15 minutes, and grinding twice by using a three-roller machine to form grease.
The following table shows the results of the grease performance tests prepared in examples 1 to 3:
according to the embodiment of the embodiment, the prepared composite barium-based lubricating grease has good performance by adopting the method for preparing the thickening agent, so that the reaction time can be greatly saved, the risk of kettle overflow is avoided, and the production efficiency is improved.
In the present application, it will be understood by those skilled in the art that the specific meaning of the above terms in the present application is understood by specific circumstances, and although the embodiments of the present application have been shown and described above, it is to be understood that the above embodiments are exemplary and not to be construed as limiting the present application, and that alterations, modifications, substitutions and variations may be made in the above embodiments within the scope of the application by those skilled in the art.
Claims (10)
1. A complex barium-based grease composition characterized by: the thickener comprises a high molecular acid, a medium and low molecular acid, a base, a solvent and water.
2. The complex barium-based grease composition of claim 1, wherein: the polymer acid is C12-C25 fatty acid and/or hydroxy fatty acid, and can be one or more of lauric acid, myristic acid, palmitic acid, stearic acid and 12-hydroxy stearic acid.
3. The complex barium-based grease composition of claim 1, wherein: the medium-low molecular acid is mono-carboxylic acid or dicarboxylic acid of C6-C10 hydrocarbon group, and can be one or more of benzoic acid, terephthalic acid, azelaic acid and sebacic acid.
4. The complex barium-based grease composition of claim 1, wherein: the weight ratio of the high molecular acid to the low molecular acid is preferably 1:0.1-1.
5. The complex barium-based grease composition of claim 1, wherein: the base is barium hydroxide.
6. The complex barium-based grease composition of claim 1, wherein: the base oil comprises one or more of mineral oil, hydrogenated oil, poly alpha olefin, ester oil, polyether and polysiloxane.
7. The complex barium-based grease composition of claim 1, wherein: the solvent is one or more of aqueous solution and hydrocarbon solvent.
8. A preparation method of composite barium-based lubricating grease is characterized by comprising the following steps: the method comprises the following steps:
step A, prefabricating a thickening agent;
wherein, the step A comprises the following steps:
s1, mixing 12-hydroxystearic acid with a hydrocarbon solvent for the first time to obtain an acid liquor A;
s2, mixing dicarboxylic acid and water for the second time to obtain acid liquor B;
s3, carrying out a first-step reaction on the acid liquor A and barium hydroxide to obtain a mixed liquor;
s4, continuously adding the acid liquor B and adding the barium hydroxide again in the mixed liquor, wherein the barium hydroxide is slowly added and the double decomposition reaction is carried out until the reaction is completed;
s5, filtering and drying the obtained reaction product to obtain a thickening agent;
step B, mixing: and mixing the thickening agent and the base oil, and refining at 150-200 ℃ after the full mixing is finished to obtain the lubricating grease composition.
9. The method for preparing the composite barium-based grease according to claim 8, wherein: the mass content of the thickening agent in the lubricating grease composition is 10-35%.
10. The method for preparing the composite barium-based grease according to claim 8, wherein: the refining heat preservation time is 10-30 min.
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