CN115161096A - Aluminum-barium-based lubricating grease composition, and preparation method and application thereof - Google Patents

Aluminum-barium-based lubricating grease composition, and preparation method and application thereof Download PDF

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Publication number
CN115161096A
CN115161096A CN202210623413.XA CN202210623413A CN115161096A CN 115161096 A CN115161096 A CN 115161096A CN 202210623413 A CN202210623413 A CN 202210623413A CN 115161096 A CN115161096 A CN 115161096A
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Prior art keywords
aluminum
barium
grease composition
base oil
stirring
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CN115161096B (en
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高峰
李晓佳
张晓凯
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China Petroleum and Chemical Corp
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China Petroleum and Chemical Corp
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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
    • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/06—Metal compounds
    • C10M2201/062—Oxides; Hydroxides; Carbonates or bicarbonates
    • C10M2201/0626—Oxides; Hydroxides; Carbonates or bicarbonates 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
    • 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
    • C10M2207/02—Hydroxy compounds
    • C10M2207/021—Hydroxy compounds having hydroxy groups bound to acyclic or cycloaliphatic carbon atoms
    • 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
    • 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
    • C10N2030/08—Resistance to extreme temperature
    • 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

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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 relates to the technical field of lubricating grease, in particular to an aluminum-barium-based lubricating grease composition, and a preparation method and application thereof. The aluminum-barium-based lubricating grease composition comprises a thickening agent and base oil; the base oil is PAO synthetic oil and/or mechanical oil, and the kinematic viscosity of the base oil at 40 ℃ is 20-60 mm, wherein the thickening agent is an aluminum-barium-based thickening agent, the molar ratio of aluminum to barium in the thickening agent is 1 2 And s. The lubricating grease composition provided by the invention is low in weightThe low-temperature grease has a melting point of-50-80 ℃, has excellent sea water resistance, adhesion and rubber adaptability, and has excellent sealing and protection effects on a rubber gasket, a sealing part and a thread part which are in contact with sea water on a ship and a protection effect on a paint-free part of a shell.

Description

Aluminum-barium-based lubricating grease composition, and preparation method and application thereof
Technical Field
The invention relates to the technical field of lubricating grease, in particular to an aluminum-barium-based lubricating grease composition, and a preparation method and application thereof.
Background
For precise and complex large ships, the problems of failure, damage, corrosion and the like can be caused inevitably when the ships run for a long time on the sea with complex environment and serious seawater and salt mist erosion. Therefore, any vessel needs to be serviced after long-term travel at sea. The repair shop needs to regularly maintain and repair the ship, replace worn parts, assemblies and components, restore the service performance, and check the technical status of the remaining components to remove the discovered faults.
The protective lubricating grease is one kind of lubricating grease commonly used in maintenance, and is mainly used for sealing and protecting rubber gaskets, sealing parts and thread parts and protecting paint-free parts of shells. According to the particularity of the operation condition of the ship, the product is required to have good seawater corrosion resistance, seawater washing resistance, corrosion resistance, low-temperature performance and rubber compatibility.
At present, only the invention CN102021067A provides a preparation method of a barium-aluminum-based lubricating grease for ships, which is prepared from triple-pressure stearic acid, barium hydroxide, 80# microcrystalline wax, high carbonic acid, polyisobutylene, aluminum soap stearate and instrument oil, the preparation process is complex, firstly the aluminum soap needs to be prefabricated in advance, secondly, the reaction time is longer, saponification is needed for 3 hours, and finally, the temperature is kept constant for 24 hours at 40 ℃ after cooling, so that the preparation method is not beneficial to industrial production and application. Therefore, it is necessary to research a barium aluminum grease with simple preparation process and excellent performance.
Disclosure of Invention
In order to solve the technical problems, the invention provides an aluminum-barium-based lubricating grease composition, and a preparation method and application thereof.
In a first aspect, the present invention provides an aluminum-barium-based grease composition, including a thickener and a base oil; the base oil is PAO synthetic oil and/or mechanical oil, and the kinematic viscosity of the base oil at 40 ℃ is 20-60 mm, wherein the thickening agent is an aluminum-barium-based thickening agent, the molar ratio of aluminum to barium in the thickening agent is 1 2 And(s) in the presence of a catalyst. The inventionThe lubricating grease composition belongs to low-melting-point low-temperature grease, and the lubricating grease has excellent sea water resistance, adhesion and rubber adaptability by adopting the specific aluminum-barium-based thickening agent to be matched with the base oil, so that the lubricating grease has excellent sealing and protecting effects on a rubber gasket, a sealing part and a thread part which are in contact with sea water on a ship and a paint-free part of a shell, the service temperature range is-50-80 ℃, and the special working condition requirements of the ship protection part can be better met.
Preferably, the thickening agent is prepared from fatty acid, isopropanol aluminum compound and barium hydroxide.
Further preferably, the fatty acid is one or a mixture of 12-hydroxystearic acid and stearic acid; the isopropanol aluminum compound is one or a mixture of two of isopropanol aluminum and an isopropanol aluminum tripolymer; the barium hydroxide is barium hydroxide monohydrate or barium hydroxide octahydrate. According to the invention, the thickening agent prepared by adopting the preferable raw materials can effectively control the penetration degree of the product, has stable process, has better effect with the base oil and the finger-sticking agent, and can obviously improve the adhesion performance and the rust-proof performance of the composition.
More preferably, the molar ratio of aluminum to barium is 1. The preferred amount ratio of the thickener used in the present invention, especially the aluminum isopropoxide-based compound and barium hydroxide, enables further improvement in rust prevention and corrosion prevention properties of the grease composition in the system.
Preferably, the base oil is a PAO synthetic oil and/or a mechanical oil.
Preferably, the kinematic viscosity at 40 ℃ of the base oil is 20-60 mm 2 Preferably, the kinematic viscosity at 40 ℃ of the base oil is 20-45 mm 2 And s. The type and viscosity of the base oil adopted by the invention can be well matched with a specific thickening agent in the system, and the low-temperature use requirement of-50 ℃ is met.
Further preferably, the rubber composition further comprises an adhesive, wherein the adhesive is one or a mixture of two of superfine fully vulcanized powder carboxylic styrene butadiene rubber and superfine fully vulcanized powder silicon rubber.
Preferably, the mass ratio of the adhesive to the base oil is 0.05 to 0.5:45 to 75 percent; the mass ratio of the thickening agent to the base oil is 15-30: 45 to 75 percent.
The adopted finger-sticking agent can obviously improve the adhesion performance of the lubricating grease composition, better avoid loss in the seawater flushing process and influence on the antirust performance of the lubricating grease composition, and particularly has more remarkable effect under the optimal proportion of the finger-sticking agent and the base oil.
Further preferably, the preparation raw materials of the aluminum-barium-based lubricating grease composition comprise the following components in parts by weight: 15-30 parts of thickening agent, 45-75 parts of base oil and 0.05-0.5 part of finger-sticking agent.
In a second aspect, the preparation method of the aluminum-barium-based grease composition provided by the invention comprises the steps of mixing and reacting the raw materials of the base oil, the finger-sticking agent and the thickening agent according to the dosage.
Further, in order to better prepare the aluminum-barium-based lubricating grease composition and more effectively solve the technical problems in the prior art, the invention aims at the special working condition of the ship during the operation on the sea, and the lubricating grease composition and the preparation process are further optimized, so that the lubricating grease composition can better realize the industrial production and has excellent comprehensive performance, and is more suitable for sealing and protecting rubber gaskets, sealing parts and thread parts on the ship and protecting the housing at the paint-free part.
Preferably, the preparation method of the aluminum barium-based grease composition provided by the invention comprises the following steps: mixing 50-70% of the total amount of the base oil and 20-30% of the total amount of the fatty acid, stirring and heating, adding 40-60% of the total amount of the aluminum isopropoxide compound, stirring and reacting, heating, adding the rest of the aluminum isopropoxide compound, and stirring and reacting at 80-95 ℃; stirring and heating to 120-130 ℃, and adding 10-25% of the total amount of the residual fatty acid and the base oil; continuously heating to 140-150 ℃, slowly adding barium hydroxide for saponification reaction, then continuously heating to 185-190 ℃, and stirring at constant temperature; then cooling, carrying out high-pressure homogenization treatment when the temperature is reduced to 80-100 ℃, and adding the rest base oil and the finger-sticking agent when the temperature is reduced to 55-65 ℃. In the research and development process, the invention discovers that the industrialization level, the rust resistance, the adhesiveness and the rubber adaptability of the lubricating grease are obviously improved by simplifying the preparation process of the aluminum soap and the barium soap, adjusting the optimized aluminum-barium ratio and the adding sequence of the aluminum soap and the barium soap and further adding a proper amount of superfine fully-vulcanized powdered carboxylic styrene butadiene rubber or superfine fully-vulcanized powdered silicon rubber, and the cone penetration performance is deteriorated by adopting the conventional direct quenching.
Further preferably, the preparation method of the aluminum barium-based grease composition provided by the invention comprises the following steps: mixing 55-65% of the total amount of the base oil and 25-35% of the total amount of the fatty acid, stirring and heating to 60-80 ℃, adding 45-55% of the total amount of the aluminum isopropoxide compound, and stirring and reacting for 15-20 min; continuously heating to 80-90 ℃, adding the rest isopropanol aluminum compound, controlling the temperature to 85-95 ℃, and stirring for reaction for 45-60 min; stirring and heating to 125-130 ℃, and adding 15-25% of the total amount of the residual fatty acid and the base oil; continuously heating to 140-150 ℃, slowly adding barium hydroxide, stirring and reacting for 60-90 min, continuously heating to 185-190 ℃ after the saponification reaction is finished, and stirring for 5-10 min at constant temperature; then quickly cooling, homogenizing under 15-25 MPa when the temperature is reduced to 80-100 ℃, adding the rest base oil and the adhesive agent when the temperature is reduced to 55-65 ℃, and stirring.
In a third aspect, the present invention provides the use of the aluminum barium grease composition or the aluminum barium grease composition obtained by the method for producing the aluminum barium grease composition as grease for ship lubrication and protection, preferably for sealing and protection of rubber gaskets, sealing portions, threaded portions, and housing non-painted portions on ships.
The invention has the beneficial effects that: the aluminum-barium-based lubricating grease composition provided by the invention belongs to low-melting-point low-temperature grease, has excellent sea water resistance, adhesion and rubber adaptability, has good rubber compatibility, and can provide long-term effective protection for a protection part; the ship can generate larger seawater impact force in the process of running in seawater, so that lubricating grease is easy to lose, the protection part is exposed, and the ship is corroded with the seawater. The lubricating grease provided by the invention also has excellent adhesion performance, does not run off in use, and can better solve the problem that the protective performance is reduced due to the lubricating grease loss caused by seawater flushing. And the lubricating grease disclosed by the invention is simple in preparation process, convenient to operate and beneficial to industrial production. The lubricating grease composition provided by the invention can be better used for sealing and protecting rubber gaskets, sealing parts and thread parts which are contacted with seawater on ships and protecting paintless parts of shells, and the use temperature range is-50-80 ℃.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below, and the following embodiments are used for illustrating the present invention and are not intended to limit the scope of the present invention. The examples do not show the specific techniques or conditions, according to the technical or conditions described in the literature in the field, or according to the product specifications. The conditions in the examples may be further adjusted depending on the specific experimental conditions or plant conditions, and the conditions in the conventional experiments are not generally specified. Materials, reagents and the like used in the following examples are commercially available unless otherwise specified.
Example 1
The aluminum barium-based grease composition provided in this example specifically includes:
thickening agent: 135kg of stearic acid, 33.6kg of aluminum isopropoxide and 39kg of barium hydroxide octahydrate, wherein the molar ratio of aluminum to barium is 1.01;
base oil: 460kg (PAO synthetic oil: 100%, base oil kinematic viscosity at 40 ℃ 42 mm) 2 /s)；
Finger-sticking agent: 0.9kg of superfine fully vulcanized powdered carboxylic styrene butadiene rubber.
The specific preparation method of the aluminum barium-based grease composition provided in this example: adding 280kg of base oil and 40kg of stearic acid into a reaction kettle, stirring and heating, adding 16.8kg of aluminum isopropoxide when the temperature is raised to 72 ℃, and stirring and reacting for 15 minutes; continuously heating to 82 ℃, adding the rest of aluminum isopropoxide, controlling the temperature at 90 ℃, and stirring for reacting for 50 minutes; stirring and heating to 128 ℃, and adding the rest of all fatty acids and 90kg of base oil; continuously heating to 146 ℃, slowly adding barium hydroxide, stirring and reacting for 90 minutes, continuously heating to 188 ℃ after the saponification reaction is finished, stopping heating, and stirring at constant temperature for 6 minutes; and (3) after the constant temperature is finished, quickly cooling all the materials in the kettle by using a film cooling device, dispersing the materials by using a 20MPa high-pressure homogenizer when the temperature is reduced to 98 ℃, adding the rest of all the base oil and the finger-sticking agent when the temperature is reduced to below 60 ℃, uniformly stirring, filtering, degassing and canning to obtain the finished product.
Example 2
The aluminum barium-based grease composition provided in this example specifically includes:
thickening agent: 120kg of 12-hydroxystearic acid, 21.6kg of aluminium isopropoxide trimer and 38.4kg of barium hydroxide monohydrate, wherein the molar ratio of aluminium to barium is 0.50;
base oil: 600kg (machine oil: 100%, base oil kinematic viscosity at 40 ℃ 38 mm) 2 /s)；
Sticking agent: 1.2kg of superfine fully vulcanized powder silicon rubber.
The specific preparation method of the aluminum barium-based grease composition provided in this example comprises: putting 360kg of base oil and 36kg of 12-hydroxystearic acid into a reaction kettle, stirring and heating, adding 10.8kg of aluminum isopropoxide tripolymer when the temperature is raised to 75 ℃, and stirring and reacting for 15 minutes; continuously heating to 85 ℃, adding the rest of all aluminum isopropoxide tripolymer, and stirring to react for 53 minutes at the temperature of 92 ℃; stirring and heating to 125 ℃, and adding the rest of 12-hydroxystearic acid and 120kg of base oil; continuously heating to 148 ℃, slowly adding barium hydroxide, stirring and reacting for 85 minutes, continuously heating to 190 ℃ after the saponification reaction is finished, stopping heating, and stirring for 8 minutes at constant temperature; and after the constant temperature is finished, quickly cooling all materials in the kettle by using a film cooling device, cooling to 95 ℃, dispersing by using a 20MPa high-pressure homogenizer, cooling to below 60 ℃, adding all the residual base oil and the adhesive, stirring uniformly, filtering, degassing and canning to obtain a finished product.
Example 3
The aluminum barium-based grease composition provided in this example specifically includes:
thickening agent: 70kg of 12-hydroxystearic acid, 70kg of stearic acid, 48kg of aluminum isopropoxide and 90kg of barium hydroxide octahydrate, wherein the molar ratio of aluminum to barium is 1.71;
base oil: 700kg (50% of PAO synthetic oil, 50% of mechanical oil, 30mm kinematic viscosity at 40 ℃ of PAO synthetic oil 2 S: the kinematic viscosity of the machine oil at 40 ℃ is 18mm 2 S, kinematic viscosity of base oil at 40 ℃:25mm 2 /s)；
Sticking agent: 1.0kg of superfine fully vulcanized powdered carboxylic styrene butadiene rubber and 1.0kg of superfine fully vulcanized powdered silicon rubber.
The specific preparation method of the aluminum barium-based grease composition provided in this example: adding 420kg of base oil and 42kg of 12-hydroxystearic acid into a reaction kettle, stirring and heating, adding 24kg of aluminum isopropoxide when the temperature is raised to 70 ℃, and stirring and reacting for 20 minutes; continuously heating to 90 ℃, adding the rest of aluminum isopropoxide, and stirring and reacting for 50 minutes at the temperature of 90 ℃; stirring and heating to 130 ℃, and adding the rest 12-hydroxystearic acid, 70kg of stearic acid and 140kg of base oil; continuously heating to 150 ℃, slowly adding barium hydroxide, stirring and reacting for 80 minutes, continuously heating to 187 ℃ after the saponification reaction is finished, stopping heating, and stirring for 10 minutes at constant temperature; and after the constant temperature is finished, quickly cooling all materials in the kettle by using a film cooling device, cooling to 90 ℃, dispersing by using a 20MPa high-pressure homogenizer, cooling to below 60 ℃, adding all residual base oil and the adhesive, stirring uniformly, filtering, degassing and canning to obtain a finished product.
Example 4
The aluminum barium-based grease composition provided in this example specifically includes:
a thickening agent: 120kg of stearic acid, 26kg of aluminum isopropoxide trimer and 38kg of barium hydroxide monohydrate, wherein the molar ratio of aluminum to barium is 0.61;
base oil: 600kg (machine oil: 100%, base oil kinematic viscosity at 40 ℃ 28 mm) 2 /s)；
Sticking agent: 1.5kg of ultra-fine fully vulcanized powder silicone rubber.
The specific preparation method of the aluminum barium-based grease composition provided in this example: putting 360kg of base oil and 36kg of stearic acid into a reaction kettle, stirring and heating, adding 13kg of aluminum isopropoxide tripolymer when the temperature is raised to 78 ℃, and stirring and reacting for 20 minutes; continuously heating to 88 ℃, adding the rest of aluminum isopropoxide tripolymer, controlling the temperature at 88 ℃, and stirring for reacting for 60 minutes; stirring and heating to 128 ℃, and adding the residual total fatty acid and 120kg of base oil; continuously heating to 147 ℃, slowly adding barium hydroxide, stirring and reacting for 90 minutes, continuously heating to 190 ℃ after the saponification reaction is finished, stopping heating, and stirring at constant temperature for 5 minutes; and (3) after the constant temperature is finished, quickly cooling all the materials in the kettle by using a film cooling device, dispersing the materials by using a 20MPa high-pressure homogenizer when the temperature is reduced to 98 ℃, adding the rest of all the base oil and the finger-sticking agent when the temperature is reduced to below 60 ℃, uniformly stirring, filtering, degassing and canning to obtain the finished product.
Example 5
The aluminum barium-based grease composition provided in this example specifically includes:
thickening agent: 120kg of 12-hydroxystearic acid, 33.6kg of aluminum isopropoxide and 39kg of barium hydroxide octahydrate, wherein the molar ratio of aluminum to barium is 1.28;
base oil: 460kg (machine oil: 100%, base oil kinematic viscosity at 40 ℃ C.: 35 mm) 2 /s)；
Finger-sticking agent: 0.9kg of superfine fully vulcanized powder carboxylic styrene butadiene rubber.
The specific preparation method of the aluminum barium-based grease composition provided in this example comprises: putting 280kg of base oil and 40kg of 12-hydroxystearic acid stearic acid into a reaction kettle, stirring and heating, adding 16.8kg of aluminum isopropoxide when the temperature is raised to 75 ℃, and stirring and reacting for 15 minutes; continuously heating to 85 ℃, adding the rest of aluminum isopropoxide, and stirring and reacting for 50 minutes at the temperature of 90 ℃; stirring and heating to 130 ℃, and adding the rest of 12-hydroxystearic acid and 90kg of base oil; continuously heating to 145 ℃, slowly adding barium hydroxide, stirring and reacting for 90 minutes, continuously heating to 190 ℃ after the saponification reaction is finished, stopping heating, and stirring for 5 minutes at constant temperature; and after the constant temperature is finished, quickly cooling all materials in the kettle by using a film cooling device, cooling to 95 ℃, dispersing by using a 20MPa high-pressure homogenizer, cooling to below 60 ℃, adding all the residual base oil and the adhesive, stirring uniformly, filtering, degassing and canning to obtain a finished product.
Comparative example 1
The aluminum barium-based grease composition provided by the comparative example specifically comprises:
a thickening agent: 120kg of 12-hydroxystearic acid, 21.6kg of aluminium isopropoxide trimer and 38.4kg of barium hydroxide monohydrate, wherein the molar ratio of aluminium to barium is 0.50;
base oil: 600kg (machine oil: 100%, base oil kinematic viscosity at 40 ℃ 38 mm) 2 /s)；
Finger-sticking agent: 1.2kg of polyisobutene.
The specific preparation method of the aluminum barium-based lubricating grease composition provided by the comparative example comprises the following steps: putting 360kg of base oil and 36kg of 12-hydroxystearic acid into a reaction kettle, stirring and heating, adding 10.8kg of aluminum isopropoxide tripolymer when the temperature is raised to 75 ℃, and stirring and reacting for 15 minutes; continuously heating to 85 ℃, adding the rest of all aluminum isopropoxide tripolymer, and stirring to react for 53 minutes at the temperature of 92 ℃; stirring and heating to 125 ℃, and adding the rest of 12-hydroxystearic acid and 120kg of base oil; continuously heating to 148 ℃, slowly adding barium hydroxide, stirring and reacting for 85 minutes, continuously heating to 190 ℃ after the saponification reaction is finished, stopping heating, and stirring for 8 minutes at constant temperature; and after the constant temperature is finished, quickly cooling all materials in the kettle by using a film cooling device, cooling to 95 ℃, dispersing by using a 20MPa high-pressure homogenizer, cooling to below 60 ℃, adding all the residual base oil and the adhesive, stirring uniformly, filtering, degassing and canning to obtain a finished product.
Comparative example 2
The aluminum barium-based grease composition provided by the present comparative example specifically includes:
a thickening agent: 135kg of stearic acid, 33.6kg of aluminum isopropoxide and 39kg of barium hydroxide octahydrate, wherein the molar ratio of aluminum to barium is 1.01;
base oil: 460kg (PAO synthetic oil: 100%, base oil kinematic viscosity at 40 ℃ 42 mm) 2 /s)；
Finger-sticking agent: 0.9kg of superfine fully vulcanized powder carboxylic styrene butadiene rubber.
The specific preparation method of the aluminum barium-based lubricating grease composition provided by the comparative example comprises the following steps: putting 280kg of base oil and 40kg of stearic acid into a reaction kettle, stirring and heating, adding 16.8kg of aluminum isopropoxide when the temperature is raised to 70 ℃, and stirring and reacting for 15 minutes; continuously heating to 80 ℃, adding the rest of aluminum isopropoxide, controlling the temperature at 88 ℃, and stirring for reacting for 50 minutes; stirring and heating to 125 ℃, and adding the rest of all fatty acids and 90kg of base oil; continuously heating to 145 ℃, slowly adding barium hydroxide, stirring and reacting for 90 minutes, continuously heating to 190 ℃ after the saponification reaction is finished, stopping heating, and stirring for 6 minutes at constant temperature; adding the rest base oil and the adhesive after constant temperature, quenching, cooling to 98 deg.C, dispersing with 20MPa high-pressure homogenizer, cooling to below 60 deg.C, stirring, filtering, degassing, and packaging.
Comparative example 3
The aluminum barium-based grease composition provided by the comparative example specifically comprises:
a thickening agent: 135kg of stearic acid, 33.6kg of aluminum isopropoxide and 39kg of barium hydroxide octahydrate, wherein the molar ratio of aluminum to barium is 1.01;
base oil: 460kg (PAO synthetic oil: 100%, base oil kinematic viscosity at 40 ℃ 42 mm) 2 /s)；
Sticking agent: 0.9kg of superfine fully vulcanized powder carboxylic styrene butadiene rubber.
The specific preparation method of the aluminum barium-based lubricating grease composition provided by the comparative example comprises the following steps: putting 280kg of base oil and 95kg of stearic acid into a reaction kettle, stirring and heating, adding 19.5kg of barium hydroxide octahydrate when the temperature is raised to 75 ℃, and stirring and reacting for 15 minutes; continuously heating to 85 ℃, adding the rest barium hydroxide octahydrate, and stirring and reacting for 50 minutes at 90 ℃; stirring and heating to 125 ℃, and adding the rest of all fatty acids and 90kg of base oil; continuously heating to 145 ℃, slowly adding aluminum isopropoxide, stirring and reacting for 90 minutes, continuously heating to 190 ℃ after the saponification reaction is finished, stopping heating, and stirring at constant temperature for 4 minutes; and (3) after the constant temperature is finished, quickly cooling all the materials in the kettle by using a film cooling device, dispersing by using a 20MPa high-pressure homogenizer when the temperature is reduced to 96 ℃, adding the rest all the base oil and the finger-sticking agent when the temperature is reduced to below 60 ℃, uniformly stirring, filtering, degassing and canning to obtain the finished product.
The greases obtained in examples 1 to 5 and comparative examples 1 to 3 were subjected to a performance test (the test results are shown in table 1).
Table 1 grease performance test results
Figure BDA0003675493070000101
As can be seen from the data in table 1, the greases prepared in examples 1 to 5 of the present invention all showed excellent low temperature performance, sea water resistance, adhesion performance, protective performance and rubber compatibility, and completely met the requirements of sealing and protection of rubber gaskets, sealing parts and threaded parts which are in contact with sea water on ships and protection of the paintless parts of the housing. The invention can provide more reliable and comprehensive protection for the using equipment and has good application prospect.
Although the invention has been described in detail with respect to the general description and the specific embodiments thereof, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims (10)

1. The aluminum-barium-based lubricating grease composition is characterized by comprising a thickening agent and base oil; the thickening agent is an aluminum-barium-based thickening agent, the molar ratio of aluminum to barium in the thickening agent is 1-4 2 /s。
2. The aluminum-barium based grease composition according to claim 1, wherein the thickener is prepared from a fatty acid, an aluminum isopropoxide compound and barium hydroxide.
3. The aluminum barium-based grease composition according to claim 2, wherein the fatty acid is one or a mixture of two of 12-hydroxystearic acid and stearic acid; the isopropanol aluminum compound is one or a mixture of two of isopropanol aluminum and an isopropanol aluminum tripolymer; the barium hydroxide is barium hydroxide monohydrate or barium hydroxide octahydrate.
4. The aluminum-barium-based grease composition according to claim 2 or 3, wherein the molar ratio of aluminum to barium is 1.
5. The aluminum-barium grease composition according to any one of claims 1 to 4, wherein the base oil has a kinematic viscosity at 40 ℃ of 20 to 55mm 2 Preferably, the kinematic viscosity at 40 ℃ of the base oil is 20-45 mm 2 /s。
6. The aluminum-barium-based grease composition according to any one of claims 1-5, further comprising an adhesive, wherein the adhesive is one or a mixture of two of ultra-fine fully vulcanized powdered carboxylated styrene-butadiene rubber and ultra-fine fully vulcanized powdered silicone rubber.
7. The aluminum barium-based grease composition according to claim 6, wherein the mass ratio of the finger-sticking agent to the base oil is 0.05 to 0.5:45 to 75 percent; the mass ratio of the thickening agent to the base oil is 15-30: 45 to 75 percent.
8. The aluminum-barium-based grease composition according to any one of claims 1 to 7, wherein the raw materials for preparing the aluminum-barium-based grease composition comprise the following components in parts by weight: 15-30 parts of thickening agent, 45-75 parts of base oil and 0.05-0.5 part of finger-sticking agent.
9. The method for preparing an aluminum-barium-based grease composition according to any one of claims 1 to 8, characterized by comprising the steps of: mixing 50-70% of the total amount of the base oil and 20-30% of the total amount of the fatty acid, stirring and heating, adding 40-60% of the total amount of the isopropanol aluminum compound, stirring and reacting, heating, adding the rest isopropanol aluminum compound, stirring and reacting at 80-95 ℃; stirring and heating to 120-130 ℃, and adding 10-25% of the total amount of the residual fatty acid and the base oil; continuously heating to 140-150 ℃, slowly adding barium hydroxide for saponification reaction, then continuously heating to 185-190 ℃, and stirring at constant temperature; then cooling, carrying out high-pressure homogenization treatment when the temperature is reduced to 80-100 ℃, and adding the rest base oil and the finger-sticking agent when the temperature is reduced to 55-65 ℃.
10. Use of the aluminum barium grease composition according to any one of claims 1 to 8 or the aluminum barium grease composition obtained by the method for producing an aluminum barium grease composition according to claim 9 as grease for ship lubrication and protection, preferably for sealing and protection of rubber gaskets, sealing portions, threaded portions, and housing paintless portions on ships.
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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CN102021067A (en) * 2009-09-15 2011-04-20 俞磊 Barium aluminum lubricating grease for ships
JP2011148908A (en) * 2010-01-21 2011-08-04 Nok Kluber Kk Grease composition
FR2968670A1 (en) * 2010-12-13 2012-06-15 Total Raffinage Marketing FAT COMPOSITION
CN103980979A (en) * 2014-05-26 2014-08-13 苏州惠丰润滑油有限公司 Complex aluminum-titanium-based grease composition and preparation method thereof
CN106497653A (en) * 2016-10-17 2017-03-15 中国石油化工股份有限公司 A kind of lubricating grease and preparation method thereof

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101153236A (en) * 2006-09-29 2008-04-02 中国石油化工股份有限公司 Water-resistant oleosol and method of producing the same
CN102021067A (en) * 2009-09-15 2011-04-20 俞磊 Barium aluminum lubricating grease for ships
JP2011148908A (en) * 2010-01-21 2011-08-04 Nok Kluber Kk Grease composition
FR2968670A1 (en) * 2010-12-13 2012-06-15 Total Raffinage Marketing FAT COMPOSITION
CN103980979A (en) * 2014-05-26 2014-08-13 苏州惠丰润滑油有限公司 Complex aluminum-titanium-based grease composition and preparation method thereof
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