CN108690688B - Corrosion-resistant lubricating grease and preparation method thereof - Google Patents
Corrosion-resistant lubricating grease and preparation method thereof Download PDFInfo
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- CN108690688B CN108690688B CN201810467895.8A CN201810467895A CN108690688B CN 108690688 B CN108690688 B CN 108690688B CN 201810467895 A CN201810467895 A CN 201810467895A CN 108690688 B CN108690688 B CN 108690688B
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- resistant grease
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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
-
- 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
- C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
- C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2209/102—Polyesters
- C10M2209/1023—Polyesters 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
- C10M2217/00—Organic macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2217/04—Macromolecular compounds from nitrogen-containing monomers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2217/044—Polyamides
-
- 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
- C10M2227/00—Organic non-macromolecular compounds containing atoms of elements not provided for in groups C10M2203/00, C10M2207/00, C10M2211/00, C10M2215/00, C10M2219/00 or C10M2223/00 as ingredients in lubricant compositions
- C10M2227/06—Organic compounds derived from inorganic acids or metal salts
- C10M2227/065—Organic compounds derived from inorganic acids or metal salts derived from Ti or Zr
-
- 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
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/02—Pour-point; Viscosity index
-
- 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
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/06—Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
-
- 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
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/12—Inhibition of corrosion, e.g. anti-rust agents or anti-corrosives
-
- 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
Landscapes
- 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 invention provides corrosion-resistant lubricating grease which is characterized in that: is organic praseodymium salt; or is made of a component containing 1-50% of organic praseodymium salt by mass percentage. The organic praseodymium salt has good corrosion resistance and good lubricating property; the nylon powder has good elasticity and flexibility, the polyricinoleate has high kinematic viscosity, is not easy to escape in a structural system of the lubricating grease to influence the service life of the lubricating grease, and meanwhile, the components of the product are mainly selected from natural raw materials, so that the environment-friendly performance is good.
Description
Technical Field
the invention belongs to the technical field of lubricating grease, and particularly relates to corrosion-resistant lubricating grease and a preparation method thereof.
Background
The traditional lubricating grease processing technology comprises the following steps: the grease or fatty acid is added with inorganic alkali (such as sodium hydroxide, calcium hydroxide, lithium hydroxide, aluminium hydroxide, barium hydroxide, etc.) to prepare metal soap as thickening agent or organic or inorganic thickening agent is added with mineral oil or synthetic oil for processing and thickening, the mineral oil or synthetic oil is mainly stored in a frame formed by the thickening agent, under the action of movement pressure and temperature, the oil stored in the thickening agent escapes to play a role in lubrication, and the grease or fatty acid shows the physical characteristics of a paste at normal temperature and normal pressure. When the processed material is in the conditions of high salt, acid salt and high water vapor, the corrosion resistance effect is difficult to keep for a long time, and the transmission parts such as bearings and gears are scrapped too early.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide corrosion-resistant lubricating grease.
the corrosion-resistant lubricating grease is organic praseodymium salt;
or
Is prepared from components containing 1-50% of organic praseodymium salt by mass percent.
Further, the corrosion-resistant lubricating grease provided by the invention also has the following characteristics: namely, the organic praseodymium salt is prepared from praseodymium oxide and fatty acid in a molar ratio of 1: 3-4.
The fatty acid is preferably one or more selected from saturated or unsaturated fatty acids having 8-20 carbon atoms.
The fatty acid is preferably one or more selected from isooctanoic acid, n-capric acid, lauric acid, palmitic acid, myristic acid, linoleic acid, oleic acid and stearic acid.
the preparation method of the organic praseodymium salt comprises the following steps: weighing praseodymium oxide and fatty acid according to the proportion, putting the praseodymium oxide and the fatty acid into a stirrer, stirring and reacting for 2-3 hours at the temperature of 90-110 ℃, and sampling and observing that no obvious particulate matters exist, namely the organic praseodymium salt. The organic praseodymium salt prepared as described above can be used as it is as a grease.
In addition, the corrosion-resistant lubricating grease provided by the invention can also be prepared from the following components in percentage by weight:
20 to 30 percent of organic praseodymium salt
5 to 10 percent of nylon powder
60-70% of polyricinoleate;
Preferably, the particle size of the nylon powder is less than 50 μm.
the preparation method of the polyricinoleate is as follows:
The method comprises the following steps: respectively putting ricinoleic acid and a catalyst into a polymerization kettle;
step two: filling inert gas to replace the air in the polymerization kettle;
Step three: heating to 180-220 ℃ while stirring, and reacting for 4-5 hours;
step four: the water was removed under reduced pressure to obtain the product.
The catalyst may be selected from organic acids, inorganic acids, metal salts, cation exchange resins, etc. The dosage of the catalyst is 0.03 to 1.5 percent of the total weight of reactants;
The catalyst is preferably selected from perboric acid or perborate salts, preferably sodium perborate or potassium perborate. The benefits of choosing perborate as a catalyst are: after the reaction is finished, the catalyst does not need to be separated, the production cost is reduced, and the product ricinoleic acid borate of the catalyst participating in the reaction has good friction-reducing and rust-preventing functions. When perborate is used as the catalyst, the amount of perborate is 0.3-0.5 wt% of ricinoleic acid.
the catalyst is also preferably selected from isopropyl titanate, and the isopropyl titanate is selected as the catalyst, so that the isopropyl titanate can be completely dissolved in ricinoleic acid before polymerization reaction, and the catalyst does not need to be separated after the reaction is finished, thereby reducing the production cost. The dosage of the ricinoleic acid is 0.3-0.5% of the total weight of the ricinoleic acid.
The inert gas is nitrogen or other gas capable of playing a role of shielding gas.
In addition, the invention also provides a preparation method of the corrosion-resistant lubricating grease, which comprises the following steps: weighing organic praseodymium salt, nylon powder and polyricinoleate according to the weight percentage, and stirring for 30-60 minutes at the temperature of 180-200 ℃.
the invention has the beneficial effects that:
the organic praseodymium salt has good corrosion resistance and good lubricating property; the nylon powder has good elasticity and flexibility, the polyricinoleate has high kinematic viscosity, is not easy to escape in a structural system of the lubricating grease to influence the service life of the lubricating grease, and meanwhile, the components of the product are mainly selected from natural raw materials, so that the environment-friendly performance is good.
Detailed Description
Example 1:
329.81g (1mol) of praseodymium oxide and 576.8g (4mol) of isooctanoic acid are weighed and put into a stirrer to be stirred and reacted for 2.5 hours at the temperature of 100 ℃, and the organic praseodymium salt is obtained.
300g of organic praseodymium salt, 100g of nylon powder and 600g of polyricinoleate are weighed and stirred at the temperature of 200 ℃ for 30 minutes to obtain the corrosion-resistant lubricating grease.
the preparation method of the polyricinoleate comprises the following steps:
The method comprises the following steps: 1000g of ricinoleic acid and a catalyst (5g of isopropyl titanate) are respectively put into a polymerization kettle;
Step two: filling nitrogen to replace the air in the polymerization kettle;
step three: heating to 200 ℃ while stirring, and reacting for 4.5 hours;
step four: the water was removed under reduced pressure to obtain the product.
The prepared corrosion-resistant lubricating grease is subjected to a roller stability experiment according to SH/T0122:
Respectively and uniformly coating the prepared corrosion-resistant lubricating grease and certain brand No. 2 lubricating grease on a carbon steel sheet for natural placement and rust spot observation and carrying out a damp-heat test according to GB/T2361:
example 2:
329.81g (1mol) of praseodymium oxide and 847.41g (3mol) of oleic acid are weighed and put into a stirrer to be stirred and reacted for 2 hours at the temperature of 110 ℃, and the organic praseodymium salt is obtained.
200g of organic praseodymium salt, 100g of nylon powder and 700g of polyricinoleate are weighed and stirred for 50 minutes at the temperature of 190 ℃ to obtain the corrosion-resistant lubricating grease.
the preparation method of the polyricinoleate comprises the following steps:
The method comprises the following steps: 1000g of ricinoleic acid and a catalyst (15g of cationic catalytic resin) are respectively put into a polymerization kettle;
step two: filling nitrogen to replace the air in the polymerization kettle;
Step three: heating to 180 ℃ while stirring, and reacting for 5 hours;
step four: removing water under reduced pressure, and removing the cationic catalytic resin to obtain the product.
Example 3:
329.81g (1mol) of praseodymium oxide and 730.78g (3.2mol) of myristic acid are weighed and put into a stirrer to be stirred and reacted for 3 hours at the temperature of 95 ℃, and the organic praseodymium salt is obtained.
280g of organic praseodymium salt, 50g of nylon powder and 670g of polyricinoleate are weighed and stirred at the temperature of 180 ℃ for 60 minutes to obtain the corrosion-resistant lubricating grease.
the preparation method of the polyricinoleate comprises the following steps:
the method comprises the following steps: 1000g of ricinoleic acid and a catalyst (4g of potassium perborate) are respectively put into a polymerization kettle;
Step two: filling nitrogen to replace the air in the polymerization kettle;
step three: heating to 220 ℃ while stirring, and reacting for 4 hours;
Step four: the water was removed under reduced pressure to obtain the product.
Respectively and uniformly coating the prepared corrosion-resistant lubricating grease and certain brand No. 2 lubricating grease on a carbon steel sheet for natural placement and rust spot observation and carrying out a damp-heat test according to GB/T2361:
example 4:
329.81g (1mol) of praseodymium oxide and 721.15g (3.6mol) of lauric acid are weighed and put into a stirrer to be stirred and reacted for 3 hours at the temperature of 90 ℃, and the organic praseodymium salt is obtained.
weighing 500g of organic praseodymium salt and 500g of dipentaerythritol tetrapalmitate, and stirring at 190 ℃ for 40 minutes to obtain the corrosion-resistant lubricating grease.
Example 5:
329.81g (1mol) of praseodymium oxide and 568.46g (3.3mol) of n-decanoic acid are weighed and put into a stirrer to be stirred and reacted for 2.5 hours at the temperature of 105 ℃, and the organic praseodymium salt is obtained.
300g of organic praseodymium salt, 100g of nylon powder and 600g of polyricinoleate are weighed and stirred at 185 ℃ for 30 minutes to obtain the corrosion-resistant lubricating grease.
the preparation method of the polyricinoleate comprises the following steps:
The method comprises the following steps: 1000g of ricinoleic acid and a catalyst (4g of sodium perborate) are respectively put into a polymerization kettle;
step two: filling nitrogen to replace the air in the polymerization kettle;
step three: heating to 190 ℃ while stirring, and reacting for 5 hours;
step four: the water was removed under reduced pressure to obtain the product.
Claims (11)
1. a corrosion-resistant lubricating grease is characterized in that: is organic praseodymium salt;
Or
is prepared from a component containing 1-50% of organic praseodymium salt by mass percent;
The organic praseodymium salt is prepared from praseodymium oxide and fatty acid in a molar ratio of 1: 3-4;
the preparation method of the organic praseodymium salt comprises the following steps: putting praseodymium oxide and fatty acid into a stirrer, stirring and reacting for 2-3 hours at the temperature of 90-110 ℃, and sampling and observing that no obvious particulate matters exist, namely the organic praseodymium salt.
2. The corrosion resistant grease of claim 1, wherein:
The fatty acid is selected from one or more of saturated or unsaturated fatty acids with 8-20 carbon atoms.
3. The corrosion resistant grease of claim 1, wherein:
The fatty acid is selected from one or more of isooctanoic acid, n-capric acid, lauric acid, palmitic acid, myristic acid, linoleic acid, oleic acid and stearic acid.
4. the corrosion resistant grease of claim 1, wherein the corrosion resistant grease is prepared from the following components in percentage by weight:
20 to 30 percent of organic praseodymium salt
5 to 10 percent of nylon powder
60-70% of polyricinoleate.
5. the corrosion resistant grease of claim 4, wherein:
The particle size of the nylon powder is less than 50 μm.
6. The corrosion resistant grease of claim 4, wherein:
The polyricinoleate is prepared by the following steps:
the method comprises the following steps: respectively putting ricinoleic acid and a catalyst into a polymerization kettle;
step two: filling inert gas to replace the air in the polymerization kettle;
step three: heating to 180-220 ℃ while stirring, and reacting for 4-5 hours;
Step four: the water was removed under reduced pressure to obtain the product.
7. The corrosion resistant grease of claim 6, wherein:
the dosage of the catalyst is 0.03-1.5% of the total weight of the reactants;
The catalyst is selected from one or more of organic acid, inorganic acid, metal salt and cation exchange resin.
8. The corrosion resistant grease of claim 6, wherein:
the catalyst is selected from perboric acid or perborate salts.
9. The corrosion resistant grease of claim 6, wherein:
the catalyst is selected from sodium perborate or potassium perborate.
10. The corrosion resistant grease of claim 6, wherein:
The catalyst is selected from isopropyl titanate.
11. A method of preparing a corrosion resistant grease according to any one of claims 4-10: weighing organic praseodymium salt, nylon powder and polyricinoleate according to the weight percentage, and stirring for 30-60 minutes at the temperature of 180-200 ℃.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810467895.8A CN108690688B (en) | 2018-05-16 | 2018-05-16 | Corrosion-resistant lubricating grease and preparation method thereof |
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|---|---|---|---|
| CN201810467895.8A CN108690688B (en) | 2018-05-16 | 2018-05-16 | Corrosion-resistant lubricating grease and preparation method thereof |
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| CN108690688A CN108690688A (en) | 2018-10-23 |
| CN108690688B true CN108690688B (en) | 2019-12-10 |
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| CN115851343A (en) * | 2022-11-30 | 2023-03-28 | 无锡中石油润滑脂有限责任公司 | Corrosion-resistant lubricating grease and preparation process thereof |
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| FR2896824B1 (en) * | 2006-01-30 | 2008-03-07 | Rhodia Recherches & Tech | METHOD OF OPERATING AN ENGINE USING A LUBRICATING COMPOSITION COMPRISING A COLLOIDAL DISPERSION OF A RARE EARTH FOR CATALYZING SOOT COMBUSTION |
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Effective date of registration: 20230526 Address after: 710000 in Xi'an Automotive Parts Industrial Park, Fengwu Road, Huayi District, Xi'an City, Shaanxi Province Patentee after: Xi'an Makote New Materials Research Co.,Ltd. Address before: 200333 room 414, building 2, No. 1006, Jinshajiang Road, Putuo District, Shanghai Patentee before: SHANGHAI JINZHAO ENERGY SAVING TECHNOLOGY Co.,Ltd. |