CN114606044A - Extreme pressure lubricating grease and preparation method thereof - Google Patents
Extreme pressure lubricating grease and preparation method thereof Download PDFInfo
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- CN114606044A CN114606044A CN202210288770.5A CN202210288770A CN114606044A CN 114606044 A CN114606044 A CN 114606044A CN 202210288770 A CN202210288770 A CN 202210288770A CN 114606044 A CN114606044 A CN 114606044A
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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
- C10M169/04—Mixtures of base-materials and additives
- C10M169/048—Mixtures of base-materials and additives the additives being a mixture of compounds of unknown or incompletely defined constitution, non-macromolecular and macromolecular compounds
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- 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
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/06—Metal compounds
- C10M2201/062—Oxides; Hydroxides; Carbonates or bicarbonates
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- 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
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/087—Boron oxides, acids or salts
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- 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
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/10—Compounds containing silicon
- C10M2201/102—Silicates
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- 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
- C10M2205/024—Propene
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- 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
- C10M2205/026—Butene
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- 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
- C10M2205/04—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing aromatic monomers, e.g. styrene
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- 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
- C10M2205/16—Paraffin waxes; Petrolatum, e.g. slack wax
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- 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
- C10M2207/281—Esters of (cyclo)aliphatic monocarboxylic acids
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- 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
- C10M2209/02—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2209/06—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to an acyloxy radical of saturated carboxylic or carbonic acid
- C10M2209/062—Vinyl esters of saturated carboxylic or carbonic acids, e.g. vinyl acetate
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- C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
- C10M2209/02—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2209/08—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to a carboxyl radical, e.g. acrylate type
- C10M2209/084—Acrylate; Methacrylate
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- 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
- C10M2209/02—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2209/08—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to a carboxyl radical, e.g. acrylate type
- C10M2209/086—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to a carboxyl radical, e.g. acrylate type polycarboxylic, e.g. maleic acid
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- 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
- C10M2209/12—Polysaccharides, e.g. cellulose, biopolymers
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- 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
- C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
- C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
- C10M2223/04—Phosphate esters
- C10M2223/045—Metal containing thio derivatives
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- 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
- C10M2229/044—Siloxanes with specific structure containing silicon-to-hydrogen bonds
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- 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
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- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/08—Resistance to extreme temperature
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- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/72—Extended drain
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- C10N2050/00—Form in which the lubricant is applied to the material being lubricated
- C10N2050/10—Semi-solids; greasy
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Abstract
The invention discloses extreme pressure lubricating grease and a preparation method thereof, wherein the extreme pressure lubricating grease comprises the following raw materials in percentage by weight: 10-20% of soap powder, 1-3% of an anti-adhesion composition, 5-10% of boric acid, 1-3% of butyl oleate, 1-5% of compound hydroxide salt, 1-3% of dodecanol ester, 1.5-2.3% of a high-temperature resistant additive, 1-3% of polyacrylate-styrene copolymerized water-based emulsion, 1-5% of water, 0.5-1% of an extreme pressure agent, 0.5-1% of a pour point depressant and the balance of base oil. The extreme pressure lubricating grease and the preparation method thereof can improve the anti-adhesion effect of the lubricating grease on the basis of ensuring high temperature resistance, high pressure resistance and anti-aging of the lubricating grease, well achieve the purpose of reducing the adhesion of the lubricating grease by adding the anti-adhesion composition and the high-carbon organic matter into the lubricating grease, prevent the lubricating grease from being unevenly adhered to a coated mechanical structure in a large area, ensure the compression resistance and high temperature resistance of the lubricating grease, and prolong the aging time and the service life of the lubricating grease.
Description
Technical Field
The invention relates to the technical field of lubricating grease, in particular to extreme pressure lubricating grease and a preparation method thereof.
Background
The grease is thick grease-like semisolid which is used for a friction part of a machine and plays a role in lubrication and sealing. Also used on metal surface to fill gap and prevent rust. It is mainly made up by using mineral oil (or synthetic lubricating oil) and thickening agent, and can be metal soap, also can be metal soap of potassium, barium, lead and manganese, etc. The thickening agent of non-soap base grease is made up by using graphite, carbon black, asbestos and synthetic (for example polyurea base and bentonite), and according to the application it can be divided into two kinds of general lubricating grease and special lubricating grease, the former is used for general machine parts, and the latter is used for tractor, railway locomotive, ship machinery, petroleum drilling machinery and valve. The main quality indexes are dropping point, penetration degree, ash content, moisture and the like. The indexes for evaluating the colloidal stability of the lubricating grease are an oil separation test, a rolling bearing performance test and the like. The roller test is a test method for measuring the change in consistency under the action of rolling. The fluidity test is a test method for evaluating the pumpability of a grease at low temperatures. The water-leaching resistance test is a test method for evaluating the resistance of grease to water leaching. The colloid stability is that the grease keeps colloid stability in storage and use, while the extreme pressure grease is used for lubricating grease of high-load bearing and gear, and has good pumping property and extreme pressure resistance. The lubricating grease is prepared by taking high-viscosity cylinder oil as base oil and adding lead soap or chlorine-and sulfur-containing compound extreme pressure additives, and in the technical field of bearing lubrication, the extreme pressure requirements on the lubricating grease are higher and higher along with the increase of load capacity and the continuous increase of heavy load requirements.
In order to improve the compression resistance and high temperature resistance of the lubricating grease and prolong the aging time and service life of the lubricating grease, a large amount of mineral components are added into the components of the lubricating grease, so that the lubricating grease is easily adhered to a coated mechanical structure in a large-area uneven manner in the actual use process, the lubricating effect cannot be achieved, the oil stirring loss of the mechanical structure becomes large, the power loss is reduced, the anti-adhesion effect of the lubricating grease cannot be improved on the basis of ensuring the high temperature resistance, high pressure resistance and aging resistance of the lubricating grease, and the purpose of reducing the adhesion of the lubricating grease by adding an anti-adhesion composition and high-carbon organic matters into the lubricating grease cannot be achieved, thereby bringing great inconvenience to the use of people.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides extreme pressure grease and a preparation method thereof, which solve the problems that in order to improve the compression resistance and high temperature resistance of the grease, and the aging time and the service life of the lubricating grease are prolonged, a large amount of mineral components are added into the lubricating grease components, thus leading the extreme pressure grease to be easily attached to a coated mechanical structure in large area and non-uniformly in the actual use process, not only failing to achieve the lubrication effect, and the oil stirring loss of a mechanical structure is increased, the power loss is reduced, the anti-adhesion effect of the lubricating grease can not be improved on the basis of ensuring the high temperature resistance, high pressure resistance and aging resistance of the lubricating grease, and the purpose of reducing the adhesion of the lubricating grease by adding the anti-adhesion composition and the high-carbon organic matter into the lubricating grease can not be achieved.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: the extreme pressure lubricating grease comprises the following raw materials in percentage by weight: 10-20% of soap powder, 1-3% of an anti-adhesion composition, 5-10% of boric acid, 1-3% of butyl oleate, 1-5% of compound hydroxide salt, 1-3% of dodecyl alcohol ester, 1.5-2.3% of a high-temperature resistant additive, 1-3% of polyacrylate-styrene copolymerized water-based emulsion, 1-5% of water, 0.5-1% of an extreme pressure agent, 0.5-1% of a pour point depressant and the balance of base oil.
Preferably, the anti-blocking agent comprises 15% of soap powder, 2% of an anti-blocking composition, 7% of boric acid, 2% of butyl oleate, 3% of a complex hydroxide salt, 2% of dodecyl alcohol ester, 1.9% of a high-temperature resistant additive, 2% of polyacrylate-styrene copolymerized water-based emulsion, 3% of water, 0.7% of an extreme pressure agent, 0.7% of a pour point depressant and the balance of base oil.
Preferably, the anti-blocking agent comprises 10% of soap powder, 1% of an anti-blocking composition, 5% of boric acid, 1% of butyl oleate, 1% of a complex hydroxide salt, 1% of dodecyl alcohol ester, 1.5% of a high-temperature resistant additive, 1% of polyacrylate-styrene copolymerized water-based emulsion, 1% of water, 0.5% of an extreme pressure agent, 0.5% of a pour point depressant and the balance of base oil.
Preferably, the anti-blocking agent comprises 20% of soap powder, 3% of an anti-blocking composition, 10% of boric acid, 3% of butyl oleate, 5% of a complex hydroxide salt, 3% of dodecyl alcohol ester, 2.3% of a high-temperature resistant additive, 3% of polyacrylate-styrene copolymerized water-based emulsion, 5% of water, 1% of an extreme pressure agent, 1% of a pour point depressant and the balance of base oil.
Preferably, the anti-blocking composition is any combination of any two or more of liquid paraffin, talcum powder or xanthan gum.
Preferably, the complex hydroxide salt is any combination of any two or more of potassium hydroxide, lithium hydroxide or calcium hydroxide.
Preferably, the high temperature resistant additive is any combination of any two or more of ceramic powder, hindered phenol, hydrogen-containing silicone oil, tall oil acid ester, polyisobutylene or random polypropylene.
Preferably, the extreme pressure agent is any one of sodium metaborate, zinc dialkyl dithiophosphate, tricresyl phosphate, triethyl phosphate or molybdenum disulfide.
Preferably, the pour point depressant is a vinyl acetate-fumarate copolymer.
The invention also discloses a preparation method of the extreme pressure lubricating grease, which comprises the following steps:
s1, firstly, respectively weighing soap powder, an anti-adhesion composition, boric acid, butyl oleate, compound hydroxide, dodecyl alcohol ester, a high-temperature resistant additive, polyacrylate-styrene copolymerized water-based emulsion, water, an extreme pressure agent, a pour point depressant and base oil according to the required weight percentage by using weighing equipment, and storing the mixture in a storage tank for later use;
s2, pouring the base oil weighed in the step S1 into a reaction device, heating to the temperature of 100-;
s3, respectively and sequentially adding boric acid, a composite hydroxide aqueous solution, a high-temperature resistant additive and a polyacrylate-styrene copolymerized aqueous emulsion into the reaction equipment in the step S2, keeping the temperature at 130 ℃ and 150 ℃, and continuously stirring for 20-30 min;
s4, adding the anti-adhesion composition, water, the extreme pressure agent and the pour point depressant weighed in the step S1 into the reaction equipment in the step S3 in sequence, stirring for 15-20min, dehydrating, continuously heating to 220 ℃ to form a viscous paste, and cooling, homogenizing and degassing to obtain the finished extreme pressure grease.
(III) advantageous effects
The invention provides extreme pressure lubricating grease and a preparation method thereof. Compared with the prior art, the method has the following beneficial effects:
(1) the extreme pressure lubricating grease comprises the following raw materials in percentage by weight: 10-20% of soap powder, 1-3% of anti-adhesion composition, 5-10% of boric acid, 1-3% of butyl oleate, 1-5% of compound hydroxide salt, 1-3% of dodecanol ester, 1.5-2.3% of high temperature resistant additive, 1-3% of polyacrylate-styrene copolymerized water-based emulsion, 1-5% of water, 0.5-1% of extreme pressure agent, 0.5-1% of pour point depressant and the balance of base oil, so that the anti-adhesion effect of the lubricating grease can be improved on the basis of ensuring the self high temperature resistance, high pressure resistance and anti-aging of the lubricating grease, the purpose of reducing the adhesion of the lubricating grease by adding the anti-adhesion composition and high carbon organic matters into the lubricating grease is well achieved, the lubricating grease is prevented from being unevenly adhered to a coated mechanical structure in a large area, and the extreme pressure churning loss is avoided from being increased, the power loss condition occurs, the compression resistance and high temperature resistance of the lubricating grease are ensured, the aging time and the service life of the lubricating grease are prolonged, the lubricating effect is achieved, the redundant loss caused by the adhesion of the lubricating grease can be reduced, and the lubricating grease is greatly convenient for people to use.
(2) The preparation method of the extreme pressure lubricating grease specifically comprises the following steps: s1, firstly, respectively weighing soap powder, an anti-adhesion composition, boric acid, butyl oleate, compound hydroxide, dodecyl alcohol ester, a high-temperature resistant additive, polyacrylate-styrene copolymerized water-based emulsion, water, an extreme pressure agent, a pour point depressant and base oil according to the required weight percentage by using weighing equipment, and storing the mixture in a storage tank for later use; s2, pouring the base oil weighed in the step S1 into a reaction device, heating to the temperature of 100 ℃ and 130 ℃, adding the organic acid, soap powder, butyl oleate and dodecyl alcohol ester, and reacting in a stirring pressure reaction kettle for 30-40 min; s3, respectively and sequentially adding boric acid, a composite hydroxide aqueous solution, a high-temperature resistant additive and a polyacrylate-styrene copolymerized aqueous emulsion into the reaction equipment in the step S2, keeping the temperature at 130 ℃ and 150 ℃, and continuously stirring for 20-30 min; s4, adding the anti-adhesion composition, water, the extreme pressure agent and the pour point depressant weighed in the step S1 into the reaction equipment in the step S3 in sequence, stirring for 15-20min, dehydrating, continuously heating to 220 ℃ to form a viscous paste, cooling, homogenizing and degassing to obtain the finished extreme pressure lubricating grease, and the lubricating grease can be prepared by a simple production process, so that the production efficiency is high, the production cost is low, and the lubricating grease production of extreme pressure lubricating grease production enterprises is very beneficial.
Drawings
FIG. 1 is a flow chart of the preparation method of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the embodiment of the present invention provides three technical solutions: the extreme pressure grease and the preparation method thereof comprise the following embodiments:
example 1
The extreme pressure lubricating grease comprises the following raw materials in percentage by weight: the anti-blocking agent comprises 15% of soap powder, 2% of an anti-blocking composition, 7% of boric acid, 2% of butyl oleate, 3% of a composite hydroxide salt, 2% of dodecyl alcohol ester, 1.9% of a high-temperature resistant additive, 2% of a polyacrylate-styrene copolymerized water-based emulsion, 3% of water, 0.7% of an extreme pressure agent, 0.7% of a pour point depressant and the balance of base oil, wherein the anti-blocking composition is a composition of liquid paraffin, talcum powder and xanthan gum, the composite hydroxide salt is a composition of potassium hydroxide, lithium hydroxide and calcium hydroxide, the high-temperature resistant additive is a composition of ceramic powder, hindered phenol, hydrogen-containing silicone oil, tall oil ester, polyisobutylene and atactic polypropylene, the extreme pressure agent is sodium metaborate, and the pour point depressant is a vinyl acetate-fumarate copolymer.
The embodiment of the invention also provides a preparation method of the extreme pressure lubricating grease, which comprises the following steps:
s1, firstly, respectively weighing soap powder, an anti-adhesion composition, boric acid, butyl oleate, compound hydroxide, dodecyl alcohol ester, a high-temperature resistant additive, polyacrylate-styrene copolymerized water-based emulsion, water, an extreme pressure agent, a pour point depressant and base oil according to the required weight percentage by using weighing equipment, and storing the mixture in a storage tank for later use;
s2, pouring the base oil weighed in the step S1 into a reaction device, heating to 115 ℃, adding the organic acid, soap powder, butyl oleate and dodecyl alcohol ester, and reacting in a stirring pressure reaction kettle for 35 min;
s3, respectively and sequentially adding boric acid, a composite hydroxide aqueous solution, a high-temperature-resistant additive and a polyacrylate-styrene copolymerized aqueous emulsion into the reaction equipment in the step S2, keeping the temperature at 140 ℃, and continuously stirring for 25 min;
s4, adding the anti-adhesion composition, water, the extreme pressure agent and the pour point depressant weighed in the step S1 into the reaction equipment in the step S3 in sequence, stirring for 17min, dehydrating, continuously heating to 220 ℃ to form a viscous paste, and cooling, homogenizing and degassing to obtain the finished extreme pressure grease.
Example 2
The extreme pressure lubricating grease comprises the following raw materials in percentage by weight: 10% of soap powder, 1% of an anti-adhesion composition, 5% of boric acid, 1% of butyl oleate, 1% of a composite hydroxide salt, 1% of dodecyl alcohol ester, 1.5% of a high-temperature resistant additive, 1% of polyacrylate-styrene copolymerized water-based emulsion, 1% of water, 0.5% of an extreme pressure agent, 0.5% of a pour point depressant and the balance of base oil, wherein the anti-adhesion composition is a composition of liquid paraffin and talcum powder, the composite hydroxide salt is a composition of potassium hydroxide and lithium hydroxide, the high-temperature resistant additive is a composition of ceramic powder, hindered phenol and hydrogen-containing silicone oil, the extreme pressure agent is zinc dialkyl dithiophosphate, and the pour point depressant is a vinyl acetate-fumarate copolymer.
The embodiment of the invention also provides a preparation method of the extreme pressure lubricating grease, which comprises the following steps:
s1, firstly, respectively weighing soap powder, an anti-adhesion composition, boric acid, butyl oleate, compound hydroxide, dodecyl alcohol ester, a high-temperature resistant additive, polyacrylate-styrene copolymerized water-based emulsion, water, an extreme pressure agent, a pour point depressant and base oil according to the required weight percentage by using weighing equipment, and storing the mixture in a storage tank for later use;
s2, pouring the base oil weighed in the step S1 into a reaction device, heating to 100 ℃, adding the organic acid, soap powder, butyl oleate and dodecyl alcohol ester, and reacting in a stirring pressure reaction kettle for 30 min;
s3, respectively and sequentially adding boric acid, a composite hydroxide aqueous solution, a high-temperature-resistant additive and a polyacrylate-styrene copolymerized aqueous emulsion into the reaction equipment in the step S2, keeping the temperature at 130 ℃, and continuously stirring for 20 min;
s4, adding the anti-adhesion composition, water, the extreme pressure agent and the pour point depressant weighed in the step S1 into the reaction equipment in the step S3 in sequence, stirring for 15min, dehydrating, continuously heating to 220 ℃ to form a viscous paste, and cooling, homogenizing and degassing to obtain the finished extreme pressure grease.
Example 3
The extreme pressure lubricating grease comprises the following raw materials in percentage by weight: the anti-blocking agent comprises 20% of soap powder, 3% of an anti-blocking composition, 10% of boric acid, 3% of butyl oleate, 5% of a composite hydroxide salt, 3% of dodecyl alcohol ester, 2.3% of a high-temperature resistant additive, 3% of polyacrylate-styrene copolymerized water-based emulsion, 5% of water, 1% of an extreme pressure agent, 1% of a pour point depressant and the balance of base oil, wherein the anti-blocking composition is a composition of talcum powder and xanthan gum, the composite hydroxide salt is a composition of lithium hydroxide and calcium hydroxide, the high-temperature resistant additive is a composition of tall oil ester, polyisobutylene and atactic polypropylene, the extreme pressure agent is tricresyl phosphate, and the pour point depressant is a vinyl acetate-fumarate copolymer.
The embodiment of the invention also provides a preparation method of the extreme pressure lubricating grease, which comprises the following steps:
s1, firstly, respectively weighing soap powder, an anti-adhesion composition, boric acid, butyl oleate, compound hydroxide, dodecyl alcohol ester, a high-temperature resistant additive, polyacrylate-styrene copolymerized water-based emulsion, water, an extreme pressure agent, a pour point depressant and base oil according to the required weight percentage by using weighing equipment, and storing the mixture in a storage tank for later use;
s2, pouring the base oil weighed in the step S1 into a reaction device, heating to 130 ℃, adding the organic acid, soap powder, butyl oleate and dodecyl alcohol ester, and reacting in a stirring pressure reaction kettle for 40 min;
s3, respectively and sequentially adding boric acid, a composite hydroxide aqueous solution, a high-temperature-resistant additive and a polyacrylate-styrene copolymerized aqueous emulsion into the reaction equipment in the step S2, keeping the temperature at 150 ℃, and continuously stirring for 30 min;
s4, adding the anti-adhesion composition, water, the extreme pressure agent and the pour point depressant weighed in the step S1 into the reaction equipment in the step S3 in sequence, stirring for 20min, dehydrating, continuously heating to 220 ℃ to form a viscous paste, and cooling, homogenizing and degassing to obtain the finished extreme pressure grease.
Comparison of tests
Comparative tests for blocking were carried out using a press machine as an example: firstly, selecting punching piece full samples respectively to carry out adhesion comparison tests, brushing extreme pressure grease prepared in the embodiment 1-3 of the invention and extreme pressure grease of the same type in the market on one side of the surface of each punching piece respectively, wherein steel pieces coated with the extreme pressure grease of the same type in the market are used as a comparison group, overlapping the oil surfaces of the punching pieces with the same oil property, dividing the punching pieces into two groups, adding 410N pressure respectively, keeping the punching pieces at the temperature of 145 ℃ for 3 hours, separating the steel pieces after cooling, observing and recording experimental data, wherein the specific experimental data are shown in Table 1.
Table 1 adhesion comparative test data table
In summary, the kinematic viscosity of the extreme pressure grease prepared by the embodiments 1-3 of the present invention is significantly lower than that of the extreme pressure grease of the same type on the market, wherein the kinematic viscosity of the extreme pressure grease prepared by the embodiment 1 of the present invention is the lowest, so the embodiment 1 of the present invention is the best scheme, therefore, the present invention can improve the anti-blocking effect of the grease on the basis of ensuring the high temperature resistance, high pressure resistance and anti-aging of the grease, well achieve the purpose of reducing the adhesion of the grease by adding the anti-blocking composition and the high carbon organic matter into the grease, prevent the grease from being unevenly adhered to the mechanical structure coated in a large area, thereby avoiding the great loss of the extreme pressure grease churning oil, the power consumption, the compression resistance and high temperature resistance of the grease, and the prolonging the aging time and the service life of the grease, not only achieves the lubricating effect, but also can reduce the redundant loss caused by the adhesion of the lubricating grease, thereby greatly facilitating the use of people.
And those not described in detail in this specification are well within the skill of those in the art.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. An extreme pressure grease, which is characterized in that: the raw materials comprise the following components in percentage by weight: 10-20% of soap powder, 1-3% of an anti-adhesion composition, 5-10% of boric acid, 1-3% of butyl oleate, 1-5% of compound hydroxide salt, 1-3% of dodecyl alcohol ester, 1.5-2.3% of a high-temperature resistant additive, 1-3% of polyacrylate-styrene copolymerized water-based emulsion, 1-5% of water, 0.5-1% of an extreme pressure agent, 0.5-1% of a pour point depressant and the balance of base oil.
2. The extreme pressure grease of claim 1, wherein: the raw materials comprise the following components in percentage by weight: 15% of soap powder, 2% of an anti-adhesion composition, 7% of boric acid, 2% of butyl oleate, 3% of a compound hydroxide salt, 2% of dodecyl alcohol ester, 1.9% of a high-temperature resistant additive, 2% of a polyacrylate-styrene copolymerized water-based emulsion, 3% of water, 0.7% of an extreme pressure agent, 0.7% of a pour point depressant and the balance of base oil.
3. The extreme pressure grease of claim 1, wherein: the raw materials comprise the following components in percentage by weight: 10% of soap powder, 1% of an anti-adhesion composition, 5% of boric acid, 1% of butyl oleate, 1% of a compound hydroxide salt, 1% of dodecyl alcohol ester, 1.5% of a high-temperature resistant additive, 1% of polyacrylate-styrene copolymerized water-based emulsion, 1% of water, 0.5% of an extreme pressure agent, 0.5% of a pour point depressant and the balance of base oil.
4. The extreme pressure grease of claim 1, wherein: the raw materials comprise the following components in percentage by weight: 20% of soap powder, 3% of an anti-adhesion composition, 10% of boric acid, 3% of butyl oleate, 5% of composite hydroxide salt, 3% of dodecyl alcohol ester, 2.3% of a high-temperature resistant additive, 3% of polyacrylate-styrene copolymerized water-based emulsion, 5% of water, 1% of an extreme pressure agent, 1% of a pour point depressant and the balance of base oil.
5. The extreme pressure grease according to any one of claims 1 to 4, characterized in that: the anti-blocking composition is any two or more of liquid paraffin, talcum powder or xanthan gum.
6. The extreme pressure grease according to any one of claims 1 to 4, characterized in that: the compound hydroxide is any combination of any two or more of potassium hydroxide, lithium hydroxide or calcium hydroxide.
7. The extreme pressure grease according to any one of claims 1 to 4, characterized in that: the high-temperature resistant additive is any combination of two or more of ceramic powder, hindered phenol, hydrogen-containing silicone oil, tall oil acid ester, polyisobutylene or random polypropylene.
8. The extreme pressure grease according to any one of claims 1 to 4, characterized in that: the extreme pressure agent is any one of sodium metaborate, zinc dialkyl dithiophosphate, tricresyl phosphate, triethyl phosphate or molybdenum disulfide.
9. The extreme pressure grease according to any one of claims 1 to 4, characterized in that: the pour point depressant is a vinyl acetate-fumarate copolymer.
10. A process for preparing the extreme-pressure grease according to any one of claims 1 to 4, characterized in that: the method specifically comprises the following steps:
s1, firstly, respectively weighing soap powder, an anti-adhesion composition, boric acid, butyl oleate, compound hydroxide, dodecyl alcohol ester, a high-temperature resistant additive, polyacrylate-styrene copolymerized water-based emulsion, water, an extreme pressure agent, a pour point depressant and base oil according to the required weight percentage by using weighing equipment, and storing the mixture in a storage tank for later use;
s2, pouring the base oil weighed in the step S1 into a reaction device, heating to the temperature of 100 ℃ and 130 ℃, adding the organic acid, soap powder, butyl oleate and dodecyl alcohol ester, and reacting in a stirring pressure reaction kettle for 30-40 min;
s3, respectively and sequentially adding boric acid, a composite hydroxide aqueous solution, a high-temperature resistant additive and a polyacrylate-styrene copolymerized aqueous emulsion into the reaction equipment in the step S2, keeping the temperature at 130 ℃ and 150 ℃, and continuously stirring for 20-30 min;
s4, adding the anti-adhesion composition, water, the extreme pressure agent and the pour point depressant weighed in the step S1 into the reaction equipment in the step S3 in sequence, stirring for 15-20min, dehydrating, continuously heating to 220 ℃ to form a viscous paste, and cooling, homogenizing and degassing to obtain the finished extreme pressure grease.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114480006A (en) * | 2022-04-01 | 2022-05-13 | 天津市金海利油脂有限公司 | Extreme pressure lubricating grease and preparation method thereof |
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