CN110669567A - Low-noise long-life composite barium-based lubricating grease and preparation method thereof - Google Patents
Low-noise long-life composite barium-based lubricating grease and preparation method thereof Download PDFInfo
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- CN110669567A CN110669567A CN201911014046.8A CN201911014046A CN110669567A CN 110669567 A CN110669567 A CN 110669567A CN 201911014046 A CN201911014046 A CN 201911014046A CN 110669567 A CN110669567 A CN 110669567A
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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
- C10M177/00—Special methods of preparation of lubricating compositions; Chemical modification by after-treatment of components or of the whole of a lubricating composition, not covered by other classes
-
- 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
- C10M2205/028—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers containing aliphatic monomers having more than four carbon atoms
- C10M2205/0285—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers containing aliphatic monomers having more than four carbon atoms 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
- C10M2207/127—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
-
- 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
- C10M2207/28—Esters
- C10M2207/283—Esters of polyhydroxy compounds
- C10M2207/2835—Esters of polyhydroxy compounds used as base material
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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 invention discloses a low-noise long-life composite barium-based lubricating grease and a preparation method thereof, and aims to solve the technical problems that the noise and the service life of the traditional composite barium-based lubricating grease are difficult to meet higher requirements; the lubricating grease comprises the following raw materials in percentage by mass: 30-50% of PAO, 10-21% of mineral oil or ester oil, 5-15% of 12-hydroxystearic acid, 1-5% of sebacic acid, 10-25% of barium hydroxide, 0.5-2% of antioxidant, 0.5-3% of antirust agent and 0.1-3% of extreme pressure antiwear agent. The composite barium-based lubricating grease guarantees the stability of the composite barium-based lubricating grease on the basis of components, improves the product performance of the composite barium-based lubricating grease to a certain extent, and simultaneously combines a unique preparation process to optimize the oil soap structure and the fiber structure among the components in the lubricating grease to the greatest extent and finally guarantee the low-noise long-life property of the composite barium-based lubricating grease.
Description
Technical Field
The invention belongs to the technical field of lubricating grease manufacturing, and particularly belongs to low-noise long-life composite barium-based lubricating grease and a preparation method thereof.
Background
The lubricating grease is a thick grease-like semisolid which is used for a friction part of a machine and plays roles of lubricating and sealing, and is also used for a metal surface and plays roles of filling gaps and preventing rust. The antifriction lubricating grease mainly plays a role in reducing mechanical friction and preventing mechanical wear, and simultaneously plays a role in protecting metal corrosion and sealing and dust prevention.
The grease is mainly composed of a thickening agent, base oil and an additive, wherein the thickening agent content in the general grease is about 10% -20%, the base oil content is about 75% -90%, and the additive and filler content is below 5%. The base oil is the dispersing medium in the grease dispersing system, which has great influence on the performance of the grease, and the grease mostly adopts petroleum lubricating oil with medium viscosity and high viscosity as the base oil, and also adopts synthetic lubricating oil, such as ester oil, silicone oil, poly-alpha-olefin oil and the like, as the base oil to meet the requirements of mechanical lubrication and sealing under severe conditions. The thickening agent is an important component of the lubricating grease, and is dispersed in the base oil and forms a structural framework of the lubricating grease, so that the base oil is adsorbed and fixed in the structural framework. The water resistance and heat resistance of the grease are mainly determined by thickeners, and there are two major types of thickeners used to prepare the grease, namely soap-based thickeners (i.e., fatty acid metal salts) and non-soap-based thickeners (hydrocarbons, inorganic and organic). One class of additives is reserved for lubricating greases, called peptizers, which make oil soap bonding more stable, such as glycerol and water, and calcium-based greases which lose water completely lose their structure and cannot form grease, such as glycerol in sodium-based greases which can adjust the consistency of grease. The other additive is the same as lubricating oil, such as antioxidant, antiwear and antirust agent, but the dosage of the additive is generally more than that of the lubricating oil, such as phosphate, ZDDP, Elco extreme pressure antiwear agent, complexing agent, dropping point improver and the like, and sometimes, in order to improve the anti-flow and lubrication enhancing capacity of the lubricating grease, some graphite, molybdenum disulfide, carbon black and the like are added as fillers.
The composite barium-based lubricating grease has the advantages that the composite barium-based lubricating grease is excellent in comprehensive performance, has the same high-temperature resistance, water resistance and oxidation resistance as polyurea lubricating grease, has better extreme pressure wear resistance and mechanical stability, is relatively stable in the running process of a bearing, cannot leak or overflow, and has higher high temperature resistance, water resistance and acid and alkali resistance than lithium-based grease; although the composite barium-based grease has the advantages, the composite barium-based grease in the prior art also has the fatal defects that the technical problems of noise and service life are difficult to meet higher requirements, for example, the composite barium-based grease of Krueber brand in Germany has the noise value of 36-41 db on a 6201 bearing at the temperature of 200 ℃, and the service life of the composite barium-based grease is 30-40% shorter than that of lithium-based grease. Therefore, under the condition of more and more precise use environment, the requirements for the noise, service life, mechanical stability, shear resistance and the like of the grease are higher and higher, and the improvement is very necessary in combination with the technical characteristics of the composite barium-based grease.
Disclosure of Invention
(1) Technical problem to be solved
Aiming at the defects of the prior art, the invention aims to provide a low-noise long-life composite barium-based lubricating grease and a preparation method thereof, and the lubricating grease aims to solve the technical problems that the noise and the service life of the traditional composite barium-based lubricating grease are difficult to meet higher requirements; the composite barium-based lubricating grease guarantees the stability of the composite barium-based lubricating grease on the basis of components, improves the product performance of the composite barium-based lubricating grease to a certain extent, and simultaneously combines a unique preparation process to optimize the oil soap structure and the fiber structure among the components in the lubricating grease to the greatest extent and finally guarantee the low-noise long-life property of the composite barium-based lubricating grease.
(2) Technical scheme
In order to solve the technical problems, the invention provides the low-noise long-life composite barium-based lubricating grease which comprises the following raw materials in percentage by mass:
30-50% of PAO, 10-21% of mineral oil or ester oil, 5-15% of 12-hydroxystearic acid, 1-5% of sebacic acid, 10-25% of barium hydroxide, 0.5-2% of antioxidant, 0.5-3% of antirust agent and 0.1-3% of extreme pressure antiwear agent.
Preferably, the lubricating grease comprises the following raw materials in percentage by mass:
43% of PAO, 16.5% of polyol ester, 12% of hydroxystearic acid, 3.5% of sebacic acid, 19.5% of barium hydroxide, 1.5% of antioxidant, 2.1% of antirust agent and 1.9% of extreme pressure antiwear agent.
By utilizing the raw materials, the invention also provides a preparation method of the low-noise long-life composite barium-based lubricating grease, which comprises the following specific steps:
adding base oil PAO, mineral oil or ester oil and polyol ester into a reaction kettle, adding 12 hydroxystearic acid, sebacic acid and barium hydroxide, uniformly mixing, and heating the materials;
step two, when the temperature of the materials in the reaction kettle is increased to 160-170 ℃, adding the antioxidant and the extreme pressure antiwear agent into the reaction kettle, then continuing heating the materials to quickly increase the temperature of the materials to 190-170 ℃, then stopping heating, and quickly reducing the temperature of the reaction kettle and the materials in the reaction kettle to 160-170 ℃ through normal temperature heat conduction oil;
step three, continuing heating the materials, rapidly heating the materials to 190-;
cooling the materials in the blending kettle through water circulation, controlling the materials to be sheared under the pressure of 0.2Mpa, continuously stirring, adding the antirust agent into the blending kettle when the temperature of the materials is reduced to 100 ℃, and simultaneously fully stirring and uniformly mixing; when the temperature of the materials is reduced to below 85 ℃, the materials are pumped into a high-pressure homogenizer for homogenization, the pressure in the high-pressure homogenizer is controlled to be 15-20Mpa, and then the homogenized lubricating grease is vacuumized, degassed and packaged to obtain the low-noise long-life composite barium-based lubricating grease.
Preferably, in the fourth step, the material is cooled by water circulation in the blending kettle, the material is sheared under the pressure of 0.2Mpa and is continuously stirred, and when the temperature of the material is reduced to 100 ℃, the antirust agent is added into the blending kettle and is fully stirred and uniformly mixed; when the temperature of the materials is reduced to below 85 ℃, the materials are pumped into a high-pressure homogenizer for homogenization, the pressure in the high-pressure homogenizer is controlled to be 18Mpa, and then the homogenized lubricating grease is vacuumized, degassed and packaged to obtain the low-noise long-life composite barium-based lubricating grease.
Wherein, PAO, mineral oil or ester oil is used as base oil of the lubricating grease, and the thickening agent in the lubricating grease is composite barium which is formed by the reaction of 12 hydroxystearic acid, sebacic acid and barium hydroxide.
Aiming at the use of lubricating grease products, the lubricating grease has to achieve a sufficiently excellent low-noise effect, can have no garbage noise and abnormal noise when a bearing runs, and has a long service life; meanwhile, the lubricating grease has excellent mechanical stability and shear resistance, does not change greatly in viscosity under a long-time extremely high rotating speed, does not become thin, flings or overflows, and still keeps good lubrication and protection; in addition, it also has excellent extreme pressure antiwear performance and can bear certain load and impact load.
(3) Advantageous effects
Compared with the prior art, the invention has the beneficial effects that: on one hand, the composite barium-based lubricating grease has the advantages that the base oil, the thickening agent and the base grease of the lubricating grease are combined according to specific components and special contents, and the additives with the optimal proportion are combined, so that the stability of the composite barium-based lubricating grease is ensured on the basis of the components, and the product performance of the composite barium-based lubricating grease is improved to a certain extent; on the other hand, the invention utilizes the unique preparation process, and breakthroughs the mixing under the specific temperature zone and the reaction and refining among the components, and the additive is fully blended into the lubricating grease under the specific condition, and then the shearing mixing, the homogenizing and the vacuumizing degassing under the specific condition are combined, so that the oil soap structure and the fiber structure among the components in the lubricating grease are optimized to the maximum extent, the lubricating grease is fully refined, coarse grease particles and mechanical impurities contained in the lubricating grease are removed, the produced lubricating grease is clean and fine, the vibration of the bearing can be effectively reduced, the operation is stable, the decibel value is small, and the low-noise long service life of the composite barium-based lubricating grease is finally ensured.
Detailed Description
In order to make the technical means, the original characteristics, the achieved purposes and the effects of the invention easily understood and obvious, the technical solutions in the embodiments of the present invention are clearly and completely described below to further illustrate the invention, and obviously, the described embodiments are only a part of the embodiments of the present invention, but not all the embodiments.
Example 1
The specific implementation mode is to prepare the composite barium-based lubricating grease, and the specific steps are as follows:
step one, adding 30kg of base oil mineral oil and 17kg of polyol ester into a reaction kettle, adding 15kg of 12-hydroxystearic acid, 5kg of sebacic acid and 25kg of barium hydroxide, uniformly mixing, and heating the materials;
step two, when the temperature of the materials in the reaction kettle is increased to 160-170 ℃, adding 2kg of antioxidant and 3kg of extreme pressure antiwear agent into the reaction kettle, then continuing to heat the materials to quickly increase the temperature of the materials to 190-170 ℃, stopping heating, and quickly cooling the reaction kettle and the materials inside the reaction kettle to 160-170 ℃ through normal-temperature heat conduction oil;
step three, continuing heating the materials, rapidly heating the materials to 190-;
cooling the materials in the blending kettle through water circulation, controlling the materials to be sheared under the pressure of 0.2Mpa, continuously stirring, adding 3kg of antirust agent into the blending kettle when the temperature of the materials is reduced to 100 ℃, and simultaneously fully stirring and uniformly mixing; when the temperature of the materials is reduced to below 85 ℃, the materials are pumped into a high-pressure homogenizer for homogenization, the pressure in the high-pressure homogenizer is controlled to be 15-20Mpa, and then the homogenized lubricating grease is vacuumized, degassed and packaged to obtain a low-noise long-life composite barium-based lubricating grease sample 1.
Example 2
The specific implementation mode is to prepare the composite barium-based lubricating grease, and the specific steps are as follows:
step one, adding 43kg of base oil PAO and 16.5kg of polyol ester into a reaction kettle, adding 12kg of 12 hydroxystearic acid, 3.5kg of sebacic acid and 19.5kg of barium hydroxide, uniformly mixing, and heating the materials;
step two, when the temperature of the materials in the reaction kettle is increased to 160-170 ℃, adding 1.5kg of antioxidant and 1.9kg of extreme pressure antiwear agent into the reaction kettle, then continuing to heat the materials to quickly increase the temperature of the materials to 190-170 ℃, then stopping heating, and quickly reducing the temperature of the reaction kettle and the materials inside the reaction kettle to 160-170 ℃ through normal-temperature heat conducting oil;
step three, continuing heating the materials, rapidly heating the materials to 190-;
cooling the materials in the blending kettle through water circulation, controlling the materials to be sheared under the pressure of 0.2Mpa, continuously stirring, adding 2.1kg of antirust agent into the blending kettle when the temperature of the materials is reduced to 100 ℃, and simultaneously fully stirring and uniformly mixing; when the temperature of the materials is reduced to below 85 ℃, the materials are pumped into a high-pressure homogenizer for homogenization, the pressure in the high-pressure homogenizer is controlled to be 18Mpa, and then the homogenized lubricating grease is vacuumized, degassed and packaged to obtain a low-noise long-life composite barium-based lubricating grease sample 2.
Example 3
The specific implementation mode is to prepare the composite barium-based lubricating grease, and the specific steps are as follows:
adding 50kg of base oil ester oil and 21kg of polyol ester into a reaction kettle, adding 5kg of 12-hydroxystearic acid, 1kg of sebacic acid and 21.9kg of barium hydroxide, uniformly mixing, and heating the materials;
step two, when the temperature of the materials in the reaction kettle is increased to 160-170 ℃, adding 0.5kg of antioxidant and 0.1kg of extreme pressure antiwear agent into the reaction kettle, then continuing to heat the materials to quickly increase the temperature of the materials to 190-170 ℃, then stopping heating, and quickly reducing the temperature of the reaction kettle and the materials inside the reaction kettle to 160-170 ℃ through normal-temperature heat conducting oil;
step three, continuing heating the materials, rapidly heating the materials to 190-;
cooling the materials in the blending kettle through water circulation, controlling the materials to be sheared under the pressure of 0.2Mpa, continuously stirring, adding 0.5kg of antirust agent into the blending kettle when the temperature of the materials is reduced to 100 ℃, and simultaneously fully stirring and uniformly mixing; when the temperature of the materials is reduced to below 85 ℃, the materials are pumped into a high-pressure homogenizer for homogenization, the pressure in the high-pressure homogenizer is controlled to be 18Mpa, and then the homogenized lubricating grease is vacuumized, degassed and packaged to obtain a low-noise long-life composite barium-based lubricating grease sample 3.
Test comparison and results:
at present, a composite barium-based lubricating grease sample 1, a composite barium-based lubricating grease sample 2 and a composite barium-based lubricating grease sample 3 are taken, a barium-based lubricating grease sample 4 which is commonly used at present is taken, a test is carried out through automobile engine transmission of a 6201 bearing, and visual influence and comparison are carried out on the automobile engine transmission of the 6201 bearing at the temperature of 200 ℃ and above.
It is apparent from the analysis and comparison that, compared with sample 4, in the composite barium-based lubricating samples 1, 2 and 3, when the lubricating operation is carried out at a temperature of 200 ℃ or above, the garbage of the lubricating grease of the composite barium-based lubricating samples 1, 2 and 3 is obviously less, the operating noise of the three is 6-8 db less than that of sample 4 on average, and the service life is improved by 10-15%.
Having thus described the principal technical features and basic principles of the invention, and the advantages associated therewith, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present description is described in terms of various embodiments, not every embodiment includes only a single embodiment, and such descriptions are provided for clarity only, and those skilled in the art will recognize that the embodiments described herein can be combined as a whole to form other embodiments as would be understood by those skilled in the art.
Claims (4)
1. The low-noise long-life composite barium-based lubricating grease is characterized by comprising the following raw materials in percentage by mass:
30-50% of PAO, 10-21% of mineral oil or ester oil, 5-15% of 12-hydroxystearic acid, 1-5% of sebacic acid, 10-25% of barium hydroxide, 0.5-2% of antioxidant, 0.5-3% of antirust agent and 0.1-3% of extreme pressure antiwear agent.
2. The low-noise long-life composite barium-based lubricating grease as claimed in claim 1, wherein the lubricating grease comprises the following raw materials in percentage by mass:
43% of PAO, 16.5% of polyol ester, 12% of hydroxystearic acid, 3.5% of sebacic acid, 19.5% of barium hydroxide, 1.5% of antioxidant, 2.1% of antirust agent and 1.9% of extreme pressure antiwear agent.
3. A method for preparing a low-noise long-life composite barium-based lubricating grease, which is characterized by being used for preparing the composite barium-based lubricating grease as claimed in any one of claims 1 to 2, and comprising the following specific steps:
adding base oil PAO, mineral oil or ester oil and polyol ester into a reaction kettle, adding 12 hydroxystearic acid, sebacic acid and barium hydroxide, uniformly mixing, and heating the materials;
step two, when the temperature of the materials in the reaction kettle is increased to 160-170 ℃, adding the antioxidant and the extreme pressure antiwear agent into the reaction kettle, then continuing heating the materials to quickly increase the temperature of the materials to 190-170 ℃, then stopping heating, and quickly reducing the temperature of the reaction kettle and the materials in the reaction kettle to 160-170 ℃ through normal temperature heat conduction oil;
step three, continuing heating the materials, rapidly heating the materials to 190-;
cooling the materials in the blending kettle through water circulation, controlling the materials to be sheared under the pressure of 0.2Mpa, continuously stirring, adding the antirust agent into the blending kettle when the temperature of the materials is reduced to 100 ℃, and simultaneously fully stirring and uniformly mixing; when the temperature of the materials is reduced to below 85 ℃, the materials are pumped into a high-pressure homogenizer for homogenization, the pressure in the high-pressure homogenizer is controlled to be 15-20Mpa, and then the homogenized lubricating grease is vacuumized, degassed and packaged to obtain the low-noise long-life composite barium-based lubricating grease.
4. The method for preparing the low-noise long-life composite barium-based lubricating grease as claimed in claim 3, wherein in the fourth step, the material is cooled by water circulation in the blending kettle, the material is sheared under the pressure of 0.2Mpa and is continuously stirred, and when the temperature of the material is reduced to 100 ℃, the antirust agent is added into the blending kettle, and the materials are fully stirred and uniformly mixed; when the temperature of the materials is reduced to below 85 ℃, the materials are pumped into a high-pressure homogenizer for homogenization, the pressure in the high-pressure homogenizer is controlled to be 18Mpa, and then the homogenized lubricating grease is vacuumized, degassed and packaged to obtain the low-noise long-life composite barium-based lubricating grease.
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| CN201911014046.8A CN110669567A (en) | 2019-10-23 | 2019-10-23 | Low-noise long-life composite barium-based lubricating grease and preparation method thereof |
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Cited By (1)
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| CN115305129A (en) * | 2022-08-12 | 2022-11-08 | 中国石油化工股份有限公司 | Barium-based lubricating grease composition and preparation method and application thereof |
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2019
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| CN105524698A (en) * | 2014-10-23 | 2016-04-27 | 中国石油化工股份有限公司 | Composite barium-based grease composition with excellent wear-resistant property and preparation method thereof |
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| CN115305129A (en) * | 2022-08-12 | 2022-11-08 | 中国石油化工股份有限公司 | Barium-based lubricating grease composition and preparation method and application thereof |
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Application publication date: 20200110 |