CN115161096B - 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 PDFInfo
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- CN115161096B CN115161096B CN202210623413.XA CN202210623413A CN115161096B CN 115161096 B CN115161096 B CN 115161096B CN 202210623413 A CN202210623413 A CN 202210623413A CN 115161096 B CN115161096 B CN 115161096B
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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
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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
- 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
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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
- 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
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/02—Hydroxy compounds
- C10M2207/021—Hydroxy compounds having hydroxy groups bound to acyclic or cycloaliphatic carbon atoms
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/10—Carboxylix acids; Neutral salts thereof
- C10M2207/12—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
- C10M2207/125—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids
- C10M2207/126—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
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- 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
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- 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
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- 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
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- 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, a preparation method and application thereof. The aluminum barium-based lubricating grease composition comprises a thickening agent and base oil; wherein the thickener is an aluminum-barium-based thickener, the mol ratio of aluminum to barium in the thickener is 1:4-4:1, 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 2 And/s. The lubricating grease composition provided by the invention belongs to low-melting-point low-temperature grease, has the use temperature of-50-80 ℃, has excellent seawater resistance, adhesiveness and rubber adaptability, and has excellent sealing and protecting effects of rubber gaskets, sealing parts and thread parts which are in contact with seawater on ships and the protection effect of paint-free parts of shells.
Description
Technical Field
The invention relates to the technical field of lubricating grease, in particular to an aluminum-barium-based lubricating grease composition, a preparation method and application thereof.
Background
For precise and complex large ships, the large ships can run on the sea with complex environment and serious seawater and salt fog erosion for a long time, and the problems of faults, damage, corrosion and the like can be avoided. Therefore, maintenance is required for any ship after long-term travel at sea. Repair shops need to periodically maintain and repair the ship, replace worn parts, assemblies and parts, restore service performance, and check the technical status of the remaining components to remove the discovered faults.
The protective lubricating grease is a common lubricating grease used in maintenance, and is mainly used for sealing and protecting rubber gaskets, sealing parts and threaded parts and protecting the non-painted parts of the shell. According to the specificity of the ship operation condition, the product is required to have good seawater corrosion resistance, seawater flushing resistance, corrosion resistance, low-temperature performance and rubber compatibility.
At present, only the invention CN102021067A provides a preparation method of barium aluminum-based lubricating grease for ships, which is prepared from three-pressure stearic acid, barium hydroxide, 80# microcrystalline wax, high carbonic acid, polyisobutylene, aluminum stearate soap and instrument oil, and 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 at 40 ℃ for 24 hours after cooling, so that the industrial production application is not facilitated, the lubricating grease cannot be applied to a low-temperature environment of-50 ℃, the compatibility with rubber is not considered when sealing is carried out, and the adhesive property of the product is not required, so that the comprehensive properties such as low-temperature property, sea water resistance, adhesive property, protective property and rubber compatibility are still to be improved. Therefore, it is necessary to research an aluminum-barium-based lubricating 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, a preparation method and application.
In a first aspect, the invention provides an aluminum barium-based grease composition comprising a thickener and a base oil; wherein the thickener is an aluminum-barium-based thickener, the mol ratio of aluminum to barium in the thickener is 1:4-4:1, 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 2 And/s. The lubricating grease composition provided by the invention belongs to low-melting-point low-temperature grease, and has excellent sea water resistance, adhesiveness and rubber adaptability by adopting the specific aluminum-barium-based thickening agent to be matched with the base oil, so that the lubricating grease composition has excellent sealing and protecting effects on rubber gaskets, sealing parts and threaded parts which are in contact with sea water on ships and on the non-painted parts of shells, and can better meet the special working condition requirements of the marine protecting parts at the use temperature range of-50-80 ℃.
Preferably, the thickener is prepared from fatty acid, aluminum isopropoxide compound and barium hydroxide.
Further preferably, the fatty acid is one or a mixture of two of 12-hydroxystearic acid and stearic acid; the aluminum isopropoxide compound is one or a mixture of two of aluminum isopropoxide and aluminum isopropoxide trimer; the barium hydroxide is barium hydroxide monohydrate or barium hydroxide octahydrate. According to the invention, the cone penetration of the product can be effectively controlled by adopting the thickener prepared from the preferable raw materials, the process is stable, the thickener has better effect with base oil and the finger sticking agent, and the adhesive property and the rust resistance of the composition can be obviously improved.
Further preferably, the molar ratio of aluminum to barium is 1:3 to 3:1, and preferably, the molar ratio of aluminum to barium is 1:2 to 2:1. The thickener type adopted by the invention, especially the preferable dosage ratio of the aluminum isopropoxide compound and the barium hydroxide, can further improve the rust resistance and the corrosion resistance of the lubricating grease composition in a system.
Preferably, the base oil is a PAO synthetic oil and/or a mechanical oil.
Preferably, the kinematic viscosity of the base oil at 40 ℃ is 20-60 mm 2 Preferably, the base oil has an kinematic viscosity of 20 to 45mm at 40 DEG C 2 And/s. The base oil type and viscosity adopted by the invention can be well matched with a specific thickener in the system, and the low-temperature use requirement of-50 ℃ is met.
Further preferably, the adhesive is one or a mixture of two of superfine fully-vulcanized powdered carboxyl styrene-butadiene rubber and superfine fully-vulcanized powdered silicon rubber.
Preferably, the mass ratio of the adhesive to the base oil is 0.05-0.5: 45-75; the mass ratio of the thickening agent to the base oil is 15-30: 45-75.
The adhesive adopted by the invention can obviously increase the adhesive property of the lubricating grease composition, better avoid losing in the seawater flushing process and influence the antirust property of the lubricating grease composition, and especially has more outstanding effect on the preferable ratio of the adhesive to 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 adhesive.
In a second aspect, the preparation method of the aluminum barium-based lubricating grease composition provided by the invention comprises the steps of mixing and reacting the raw materials of the base oil, the adhesive and the thickener according to the amount.
Furthermore, in order to better prepare the aluminum-barium-based lubricating grease composition and effectively solve the technical problems in the prior art, the special working condition of the ship in offshore operation is aimed at, and the lubricating grease composition and the preparation process are further optimized, so that the lubricating grease composition can better realize industrial production and has excellent comprehensive performance, and is more suitable for sealing and protecting rubber gaskets, sealing parts and threaded parts on the ship and protecting places without paint on the shell.
Preferably, the preparation method of the aluminum barium-based lubricating 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, stirring and reacting, heating, adding the rest aluminum isopropoxide, 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, continuously heating to 185-190 ℃, and stirring at constant temperature; then cooling, high-pressure homogenizing treatment is carried out when the temperature is reduced to 80-100 ℃, and the temperature is reduced to below 55-65 ℃ and the rest base oil and the finger sticking agent are added. In the research and development process, the invention discovers that by simplifying the preparation process of aluminum soap and barium soap and adjusting the optimized aluminum-barium ratio and the addition sequence of the aluminum soap and the barium soap, a proper amount of superfine fully vulcanized powder carboxyl styrene-butadiene rubber or superfine fully vulcanized powder silicone rubber is further added, the industrialization level, rust resistance, adhesiveness and rubber adaptability of the lubricating grease are obviously improved, meanwhile, the penetration performance is deteriorated by adopting the conventional direct quenching, and the lubricating grease performance is further improved and the industrialized stable production can be realized by adding the aluminum soap and the barium soap in sequence and optimizing the quenching process.
Further preferably, the preparation method of the aluminum barium-based lubricating 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 residual aluminum isopropoxide compound, controlling the temperature at 85-95 ℃ and stirring for reacting 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 saponification reaction is finished, and stirring for 5-10 min at constant temperature; then rapidly cooling, homogenizing at the temperature of 80-100 ℃ under 15-25 MPa, adding the rest base oil and the adhesive, and stirring.
In a third aspect, the invention provides an application of the aluminum-barium-based lubricating grease composition or the aluminum-barium-based lubricating grease composition obtained by the preparation method of the aluminum-barium-based lubricating grease composition as lubricating grease for ship lubrication and protection, and the application is preferably applied to sealing protection of rubber gaskets, sealing parts, screw thread parts and shell paint-free parts on ships.
The invention has the advantages 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, adhesiveness and rubber adaptability, has good rubber compatibility, and can provide long-term effective protection for protection parts; the ship can generate larger seawater impact force in the running process in the seawater, so that the lubricating grease is easy to run off, the protection part is exposed, and the ship is corroded with the seawater. The lubricating grease provided by the invention has excellent adhesive property, does not generate loss in use, and can better solve the problem of reduced protective performance caused by the loss of the lubricating grease due to seawater flushing. The preparation process of the lubricating grease is simple and convenient to operate, and can be 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 threaded parts which are in contact with seawater on ships, and protecting places where the shell is free of paint, and the using temperature is in the range of-50-80 ℃.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below, and the following examples are provided for illustrating the present invention but are not intended to limit the scope of the present invention. The specific techniques or conditions are not identified in the examples and are described in the literature in this field or are carried out in accordance with the product specifications. The conditions of implementation in the examples may be further adjusted depending on the specific experimental conditions or factory conditions, and are not noted as usual in conventional experiments. Materials, reagents and the like used in the examples described below are commercially available unless otherwise specified.
Example 1
The aluminum barium-based lubricating grease composition provided in the embodiment specifically comprises:
thickener: 135kg of stearic acid, 33.6kg of aluminum isopropoxide, 39kg of barium hydroxide octahydrate and 1.01 of aluminum and barium in molar ratio;
base oil: 460kg (PAO synthetic oil: 100%, base oil 40 ℃ kinematic viscosity: 42 mm) 2 /s)；
Adhesive agent: 0.9kg of superfine fully-vulcanized powder carboxyl styrene-butadiene rubber.
The specific preparation method of the aluminum-barium-based lubricating grease composition provided by the embodiment comprises the following steps: 280kg of base oil and 40kg of stearic acid are put into a reaction kettle, stirred and heated, 16.8kg of aluminum isopropoxide is added when the temperature is raised to 72 ℃, and the mixture is stirred and reacted for 15 minutes; continuously heating to 82 ℃, adding all the residual aluminum isopropoxide, controlling the temperature at 90 ℃ and stirring for reaction for 50 minutes; adding all the rest fatty acid and 90kg of base oil when stirring and heating to 128 ℃; 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 for 6 minutes at constant temperature; after the constant temperature is finished, rapidly cooling all materials in the kettle by adopting a film cooling device, cooling to 98 ℃, performing dispersion treatment by using a 20MPa high-pressure homogenizer, cooling to below 60 ℃, adding all the residual base oil and the finger sticking agent, uniformly stirring, filtering, degassing and canning to obtain the finished product.
Example 2
The aluminum barium-based lubricating grease composition provided in the embodiment specifically comprises:
thickener: 120kg of 12-hydroxystearic acid, 21.6kg of aluminum isopropoxide trimer, 38.4kg of barium hydroxide monohydrate, and a molar ratio of aluminum to barium of 0.50;
base oil: 600kg (mechanical oil: 100%, foundation)Oil kinematic viscosity at 40 ℃): 38mm of 2 /s)；
Adhesive agent: 1.2kg of superfine fully vulcanized powder silicone rubber.
The specific preparation method of the aluminum-barium-based lubricating grease composition provided by the embodiment comprises the following steps: 360kg of base oil and 36kg of 12-hydroxystearic acid are put into a reaction kettle, stirred and heated, 10.8kg of aluminum isopropoxide trimer is added when the temperature is raised to 75 ℃, and stirred and reacted for 15 minutes; continuously heating to 85 ℃, adding all the residual aluminum isopropoxide trimer, controlling the temperature at 92 ℃ and stirring to react for 53 minutes; adding all the remaining 12-hydroxystearic acid and 120kg of base oil while stirring and heating to 125 ℃; 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; after the constant temperature is finished, rapidly cooling all materials in the kettle by adopting a film cooling device, cooling to 95 ℃, performing dispersion treatment by using a 20MPa high-pressure homogenizer, cooling to below 60 ℃, adding all the residual base oil and the finger sticking agent, uniformly stirring, filtering, degassing and canning to obtain the finished product.
Example 3
The aluminum barium-based lubricating grease composition provided in the embodiment specifically comprises:
thickener: 70kg of 12-hydroxystearic acid, 70kg of stearic acid, 48kg of aluminum isopropoxide, 90kg of barium hydroxide octahydrate and a molar ratio of aluminum to barium of 1.71;
base oil: 700kg (PAO synthetic oil: 50%, mechanical oil: 50%, PAO synthetic oil 40 ℃ kinematic viscosity 30 mm) 2 S: mechanical oil with kinematic viscosity of 18mm at 40 DEG C 2 S, base oil kinematic viscosity at 40 ℃): 25mm of 2 /s)；
Adhesive agent: 1.0kg of superfine fully-vulcanized powder carboxyl styrene-butadiene rubber and 1.0kg of superfine fully-vulcanized powder silicone rubber.
The specific preparation method of the aluminum-barium-based lubricating grease composition provided by the embodiment comprises the following steps: 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 all the residual aluminum isopropoxide, controlling the temperature at 90 ℃, and stirring and reacting for 50 minutes; adding all the remaining 12-hydroxystearic acid, 70kg stearic acid and 140kg base oil while stirring and heating to 130 ℃; 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; after the constant temperature is finished, rapidly cooling all materials in the kettle by adopting a film cooling device, cooling to 90 ℃, performing dispersion treatment by using a 20MPa high-pressure homogenizer, cooling to below 60 ℃, adding all the residual base oil and the finger sticking agent, uniformly stirring, filtering, degassing and canning to obtain the finished product.
Example 4
The aluminum barium-based lubricating grease composition provided in the embodiment specifically comprises:
thickener: 120kg of stearic acid, 26kg of aluminum isopropoxide trimer, 38kg of barium hydroxide monohydrate, and a molar ratio of aluminum to barium of 0.61;
base oil: 600kg (mechanical oil: 100%, base oil 40 ℃ kinematic viscosity: 28 mm) 2 /s)；
Adhesive agent: 1.5kg of superfine fully vulcanized powder silicone rubber.
The specific preparation method of the aluminum-barium-based lubricating grease composition provided by the embodiment comprises the following steps: 360kg of base oil and 36kg of stearic acid are put into a reaction kettle, stirred and heated, 13kg of aluminum isopropoxide trimer is added when the temperature is raised to 78 ℃, and stirred and reacted for 20 minutes; continuously heating to 88 ℃, adding all the residual aluminum isopropoxide trimer, controlling the temperature at 88 ℃, and stirring and reacting for 60 minutes; adding all the rest fatty acid and 120kg of base oil when stirring and heating to 128 ℃; 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 for 5 minutes at constant temperature; after the constant temperature is finished, rapidly cooling all materials in the kettle by adopting a film cooling device, cooling to 98 ℃, performing dispersion treatment by using a 20MPa high-pressure homogenizer, cooling to below 60 ℃, adding all the residual base oil and the finger sticking agent, uniformly stirring, filtering, degassing and canning to obtain the finished product.
Example 5
The aluminum barium-based lubricating grease composition provided in the embodiment specifically comprises:
thickener: 120kg of 12-hydroxystearic acid, 33.6kg of aluminum isopropoxide, 39kg of barium hydroxide octahydrate and a molar ratio of aluminum to barium of 1.28;
base oil: 460kg (mechanical oil: 100%, base oil 40 ℃ C. Kinematic viscosity: 35 mm) 2 /s)；
Adhesive agent: 0.9kg of superfine fully-vulcanized powder carboxyl styrene-butadiene rubber.
The specific preparation method of the aluminum-barium-based lubricating grease composition provided by the embodiment comprises the following steps: 280kg of base oil and 40kg of 12-hydroxystearic acid stearic acid are put into a reaction kettle, stirred and heated, 16.8kg of aluminum isopropoxide is added when the temperature is raised to 75 ℃, and stirred and reacted for 15 minutes; continuously heating to 85 ℃, adding all the residual aluminum isopropoxide, controlling the temperature at 90 ℃, and stirring and reacting for 50 minutes; adding all the remaining 12-hydroxystearic acid and 90kg of base oil while stirring and heating to 130 ℃; 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; after the constant temperature is finished, rapidly cooling all materials in the kettle by adopting a film cooling device, cooling to 95 ℃, performing dispersion treatment by using a 20MPa high-pressure homogenizer, cooling to below 60 ℃, adding all the residual base oil and the finger sticking agent, uniformly stirring, filtering, degassing and canning to obtain the finished product.
Comparative example 1
The aluminum-barium-based lubricating grease composition provided in this comparative example specifically includes:
thickener: 120kg of 12-hydroxystearic acid, 21.6kg of aluminum isopropoxide trimer, 38.4kg of barium hydroxide monohydrate, and a molar ratio of aluminum to barium of 0.50;
base oil: 600kg (mechanical oil: 100%, base oil 40 ℃ kinematic viscosity: 38 mm) 2 /s)；
Adhesive 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: 360kg of base oil and 36kg of 12-hydroxystearic acid are put into a reaction kettle, stirred and heated, 10.8kg of aluminum isopropoxide trimer is added when the temperature is raised to 75 ℃, and stirred and reacted for 15 minutes; continuously heating to 85 ℃, adding all the residual aluminum isopropoxide trimer, controlling the temperature at 92 ℃ and stirring to react for 53 minutes; adding all the remaining 12-hydroxystearic acid and 120kg of base oil while stirring and heating to 125 ℃; 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; after the constant temperature is finished, rapidly cooling all materials in the kettle by adopting a film cooling device, cooling to 95 ℃, performing dispersion treatment by using a 20MPa high-pressure homogenizer, cooling to below 60 ℃, adding all the residual base oil and the finger sticking agent, uniformly stirring, filtering, degassing and canning to obtain the finished product.
Comparative example 2
The aluminum-barium-based lubricating grease composition provided in this comparative example specifically includes:
thickener: 135kg of stearic acid, 33.6kg of aluminum isopropoxide, 39kg of barium hydroxide octahydrate and 1.01 of aluminum and barium in molar ratio;
base oil: 460kg (PAO synthetic oil: 100%, base oil 40 ℃ kinematic viscosity: 42 mm) 2 /s)；
Adhesive agent: 0.9kg of superfine fully-vulcanized powder carboxyl styrene-butadiene rubber.
The specific preparation method of the aluminum-barium-based lubricating grease composition provided by the comparative example comprises the following steps: 280kg of base oil and 40kg of stearic acid are put into a reaction kettle, stirred and heated, 16.8kg of aluminum isopropoxide is added when the temperature is raised to 70 ℃, and the mixture is stirred and reacted for 15 minutes; continuously heating to 80 ℃, adding all the residual aluminum isopropoxide, controlling the temperature at 88 ℃, and stirring and reacting for 50 minutes; adding all the rest fatty acid and 90kg of base oil when stirring and heating to 125 ℃; 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; and after the constant temperature is finished, adding all the residual base oil and the adhesive for quenching, cooling to 98 ℃, performing dispersion treatment by using a 20MPa high-pressure homogenizer, cooling to below 60 ℃, uniformly stirring, filtering, degassing and canning to obtain the finished product.
Comparative example 3
The aluminum-barium-based lubricating grease composition provided in this comparative example specifically includes:
thickener: 135kg of stearic acid, 33.6kg of aluminum isopropoxide, 39kg of barium hydroxide octahydrate and 1.01 of aluminum and barium in molar ratio;
base oil: 460kg (PAO synthetic oil: 100%, base oil 40 ℃ kinematic viscosity: 42 mm) 2 /s)；
Adhesive agent: 0.9kg of superfine fully-vulcanized powder carboxyl styrene-butadiene rubber.
The specific preparation method of the aluminum-barium-based lubricating grease composition provided by the comparative example comprises the following steps: 280kg of base oil and 95kg of stearic acid are put into a reaction kettle, stirred and heated, 19.5kg of barium hydroxide octahydrate is added when the temperature is raised to 75 ℃, and the mixture is stirred and reacted for 15 minutes; continuously heating to 85 ℃, adding all the rest barium hydroxide octahydrate, controlling the temperature at 90 ℃ and stirring for reaction for 50 minutes; adding all the rest fatty acid and 90kg of base oil when stirring and heating to 125 ℃; 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 for 4 minutes at constant temperature; after the constant temperature is finished, rapidly cooling all materials in the kettle by adopting a film cooling device, cooling to 96 ℃, performing dispersion treatment by using a 20MPa high-pressure homogenizer, cooling to below 60 ℃, adding all the residual base oil and the finger sticking agent, 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 performance test (the test results are shown in Table 1).
Table 1 results of grease performance tests
As can be seen from the data in Table 1, the greases prepared in examples 1 to 5 of the present invention all show excellent low temperature performance, sea water resistance, adhesion performance, protection performance and rubber compatibility, and completely meet the sealing and protection requirements of rubber gaskets, sealing parts and thread parts on ships, which are in contact with sea water, and the protection requirements of the non-painted parts of the outer shell. The invention can provide more reliable and comprehensive protection for the using equipment and has good application prospect.
While the invention has been described in detail in the foregoing general description and with reference to specific embodiments thereof, it will be apparent to one skilled in the art that modifications and improvements can be made thereto. Accordingly, such modifications or improvements may be made without departing from the spirit of the invention and are intended to be within the scope of the invention as claimed.
Claims (11)
1. An aluminum-barium-based lubricating grease composition is characterized by comprising a thickening agent, base oil and a finger sticking agent; the thickener is an aluminum-barium-based thickener, wherein the molar ratio of aluminum to barium in the thickener is 1:4-4:1, the base oil is PAO synthetic oil and/or mechanical oil, and the kinematic viscosity of the base oil at 40 ℃ is 20-55 mm 2 S; the adhesive is one or a mixture of two of superfine fully-vulcanized powder carboxyl styrene-butadiene rubber and superfine fully-vulcanized powder silicone rubber; the mass ratio of the adhesive to the base oil is 0.05-0.5: 45-75;
the preparation of the aluminum barium-based lubricating grease composition comprises the following steps: mixing 50-70% of the total weight of the base oil and 20-30% of the total weight of the fatty acid, stirring and heating, adding 40-60% of the total weight of the aluminum isopropoxide compound, stirring and reacting, heating, adding the rest aluminum isopropoxide compound, and stirring and reacting at 80-95 ℃; stirring and heating to 120-130 ℃, and adding 10-25% of the total weight of the residual fatty acid and the base oil; continuously heating to 140-150 ℃, slowly adding barium hydroxide for saponification, continuously heating to 185-190 ℃, and stirring at constant temperature; and then cooling, carrying out high-pressure homogenization treatment when the temperature is reduced to 80-100 ℃, and adding the residual base oil and the finger sticking agent when the temperature is reduced to below 55-65 ℃.
2. The aluminum-barium-based grease composition according to claim 1, wherein the thickener is prepared from fatty acid, aluminum isopropoxide compound and barium hydroxide.
3. An aluminium 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 aluminum isopropoxide compound is one or a mixture of two of aluminum isopropoxide and aluminum isopropoxide trimer; the barium hydroxide is barium hydroxide monohydrate or barium hydroxide octahydrate.
4. The aluminum-barium-based grease composition according to claim 2, wherein the molar ratio of aluminum to barium is 1:3-3:1.
5. The aluminum-barium-based grease composition according to claim 4, wherein the molar ratio of aluminum to barium is 1:2-2:1.
6. The aluminum barium-based lubricating grease composition according to claim 1, wherein the base oil has an kinematic viscosity of 20-45 mm at 40 ℃ 2 /s。
7. The aluminum barium-based lubricating grease composition according to claim 1, wherein the mass ratio of the thickener to the base oil is 15-30: 45-75.
8. An aluminium barium based grease composition according to any one of claims 1-7, wherein the preparation raw materials of the aluminium barium based grease composition comprise the following components in parts by weight: 15-30 parts of thickener, 45-75 parts of base oil and 0.05-0.5 part of adhesive.
9. A method for preparing an aluminum barium-based grease composition according to any one of claims 1 to 8, comprising the steps of: mixing 50-70% of the total weight of the base oil and 20-30% of the total weight of the fatty acid, stirring and heating, adding 40-60% of the total weight of the aluminum isopropoxide compound, stirring and reacting, heating, adding the rest aluminum isopropoxide compound, and stirring and reacting at 80-95 ℃; stirring and heating to 120-130 ℃, and adding 10-25% of the total weight of the residual fatty acid and the base oil; continuously heating to 140-150 ℃, slowly adding barium hydroxide for saponification, continuously heating to 185-190 ℃, and stirring at constant temperature; and then cooling, carrying out high-pressure homogenization treatment when the temperature is reduced to 80-100 ℃, and adding the residual base oil and the finger sticking agent when the temperature is reduced to below 55-65 ℃.
10. Use of the aluminum-barium-based grease composition according to any one of claims 1 to 8 or the aluminum-barium-based grease composition obtained by the method for producing the aluminum-barium-based grease composition according to claim 9 as a grease for lubrication and protection of ships.
11. Use of the aluminium barium based grease composition according to claim 10 or the aluminium barium based grease composition obtained by the process for preparing the aluminium barium based grease composition according to claim 10 as grease for lubrication and protection of ships, characterized in that it is applied to sealing protection of rubber gaskets, sealing parts, screw parts and non-painted parts of shells on ships.
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| CN100587046C (en) * | 2006-09-29 | 2010-02-03 | 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 |
| JP5473627B2 (en) * | 2010-01-21 | 2014-04-16 | Ｎｏｋクリューバー株式会社 | Grease composition |
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| CN103980979B (en) * | 2014-05-26 | 2016-08-17 | 江苏惠丰润滑材料股份有限公司 | Aluminum-titanium compositing yl grease compositions and preparation method |
| CN106497653B (en) * | 2016-10-17 | 2019-07-19 | 中国石油化工股份有限公司 | A kind of lubricating grease and preparation method thereof |
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