CN110903883A - Composite titanium-based lubricating grease and preparation method thereof - Google Patents
Composite titanium-based lubricating grease and preparation method thereof Download PDFInfo
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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
- C10M117/00—Lubricating compositions characterised by the thickener being a non-macromolecular carboxylic acid or salt thereof
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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
- C10M177/00—Special methods of preparation of lubricating compositions; Chemical modification by after-treatment of components or of the whole of a lubricating composition, not covered by other classes
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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
- C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
- C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
- C10M2203/1006—Petroleum or coal fractions, e.g. tars, solvents, bitumen used as base material
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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
- C10M2207/121—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of seven or less carbon atoms
- C10M2207/123—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of seven or less carbon atoms polycarboxylic
- C10M2207/1236—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of seven or less carbon atoms polycarboxylic used as thickening agent
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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
- C10M2207/1265—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids monocarboxylic used as thickening agent
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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
- C10M2207/128—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids containing hydroxy groups; Ethers thereof
- C10M2207/1285—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids containing hydroxy groups; Ethers thereof used as thickening agents
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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
- C10M2207/14—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to carbon atoms of six-membered aromatic rings
- C10M2207/141—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to carbon atoms of six-membered aromatic rings monocarboxylic
- C10M2207/1415—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to carbon atoms of six-membered aromatic rings monocarboxylic used as thickening agent
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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
- C10M2207/14—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to carbon atoms of six-membered aromatic rings
- C10M2207/142—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to carbon atoms of six-membered aromatic rings polycarboxylic
- C10M2207/1426—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to carbon atoms of six-membered aromatic rings polycarboxylic used as thickening agent
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- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Lubricants (AREA)
Abstract
The invention belongs to the field of lubricating grease preparation, and discloses composite titanium-based lubricating grease and a preparation method thereof. The preparation method comprises the following steps: heating 3-20 parts by weight of a polymeric acid, 8.75-22.5 parts by weight of a base oil and 2.5-17.5 parts by weight of isopropyl titanate to 60-70 ℃ for saponification reaction for 10-20 min to obtain a first intermediate product; performing saponification reaction on 2-10 parts by weight of low-molecular acid, 8.75-22.5 parts by weight of base oil and 2.5-17.5 parts by weight of isopropyl titanate to obtain a second intermediate product; the high molecular acid is an acid with a molecular weight more than 200, and the low molecular acid is an acid with a molecular weight less than 200; mixing the first intermediate product and the second intermediate product, heating for reaction, adding deionized water, wherein the ratio of the addition amount of the deionized water to the molar weight of the isopropyl titanate is 1: 1-1.75: 1, and performing saponification and heat preservation; dehydrating at 120 ℃, refining at high temperature, and then adding 10-65 parts by weight of base oil; cooling, grinding and homogenizing to obtain the high-performance composite titanium-based lubricating grease. The titanium-based lubricating grease prepared by the method has high dropping point and low oil separation rate.
Description
Technical Field
The invention relates to the field of lubricating grease preparation, in particular to composite titanium-based lubricating grease and a preparation method thereof.
Background
The description of the background of the invention pertaining to the related art to which this invention pertains is given for the purpose of illustration and understanding only of the summary of the invention and is not to be construed as an admission that the applicant is explicitly or implicitly admitted to be prior art to the date of filing this application as first filed with this invention.
The composite titanium-based lubricating grease is novel lubricating grease in the lubricating grease industry, has a plurality of excellent properties, such as shear stability, high and low temperature properties, extreme pressure abrasion resistance, biodegradability and the like, can meet the use requirements under severe working conditions, can replace the traditional high-performance lubricating grease in many aspects, and compared with the traditional lubricating grease, the composite titanium-based lubricating grease still has better high temperature resistance, corrosion resistance and friction and wear resistance even if no additive is added, so the composite titanium-based lubricating grease is called as 'super lubricating grease without additive' in the lubricating grease industry, receives wide attention in the industry, is considered to be multifunctional high-efficiency lubricating grease, and is expected to become a next-generation high-performance lubricating grease product.
However, the current loaded titanium-based lubricating oil has poor stability, low dropping point and larger oil separation rate of a steel mesh.
Disclosure of Invention
The embodiment of the invention aims to provide the composite titanium-based lubricating grease and the preparation method thereof, and the composite titanium-based lubricating grease prepared by the method has moderate consistency, low steel mesh oil separation rate and better storage stability, and the dropping point of the composite titanium-based lubricating grease exceeds 330 ℃.
The purpose of the invention is realized by the following technical scheme:
the embodiment of the first aspect of the invention provides a preparation method of complex titanium-based grease, which comprises the following steps:
heating 3-20 parts by weight of a polymeric acid, 8.75-22.5 parts by weight of a base oil and 2.5-17.5 parts by weight of isopropyl titanate to 60-70 ℃ for saponification reaction for 10-20 min to obtain a first intermediate product; heating 2-10 parts by weight of low molecular acid, 8.75-22.5 parts by weight of base oil and 2.5-17.5 parts by weight of isopropyl titanate to 60-70 ℃ for saponification reaction for 10-20 min to obtain a second intermediate product; the high molecular acid is an acid with the molecular weight more than 200, and the low molecular acid is an acid with the molecular weight less than 200;
mixing and heating the first intermediate product and the second intermediate product, heating to 85-95 ℃, continuing to react for 1-2 hours, adding deionized water, wherein the ratio of the addition amount of the deionized water to the molar weight of the isopropyl titanate is 1: 1-1.75: 1, and performing saponification and heat preservation for 20-40 min; gradually heating to 120 ℃ for dehydration;
continuously heating to 170-190 ℃ for high-temperature refining for 5-10 min, and then adding 10-65 parts by weight of base oil; slowly stirring, naturally cooling, grinding and homogenizing to obtain the high-performance composite titanium-based lubricating grease.
Further, the method comprises the following steps: the high molecular acid is stearic acid or 12-hydroxystearic acid.
Further, the low molecular acid is at least one of benzoic acid, terephthalic acid and sebacic acid or succinic acid.
Further, the base oil is at least one of MVI500, 600N and 200 DN.
Embodiments of another aspect of the present invention provide a complex titanium-based grease prepared by any one of the above-described preparation methods.
The embodiment of the compound titanium-based lubricating grease and the preparation method thereof has the following beneficial effects:
according to the composite titanium-based lubricating grease prepared by the invention, high and low molecular organic acids are physically isolated in the preparation process, so that saponification reactions are carried out in different reaction kettles, the temperature of a saponification reaction system is reduced, the saponification reaction degree is higher, the structure of the generated soap fiber is more stable, and the prepared composite titanium-based lubricating grease has the advantages of high dropping point, low oil separation rate of a steel mesh, good storage stability, qualified corrosion of a copper sheet and good wear resistance and friction reduction performance even if no additive is added.
Detailed Description
The present application is further described below with reference to examples.
In the following description, different "one embodiment" or "an embodiment" may not necessarily refer to the same embodiment, in order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art. Various embodiments may be replaced or combined, and other embodiments may be obtained according to the embodiments without creative efforts for those skilled in the art.
A preparation method of complex titanium-based lubricating grease comprises the following steps:
heating 3-20 parts by weight of a polymeric acid, 8.75-22.5 parts by weight of a base oil and 2.5-17.5 parts by weight of isopropyl titanate to 60-70 ℃ for saponification reaction for 10-20 min to obtain a first intermediate product; heating 2-10 parts by weight of low molecular acid, 8.75-22.5 parts by weight of base oil and 2.5-17.5 parts by weight of isopropyl titanate to 60-70 ℃ for saponification reaction for 10-20 min to obtain a second intermediate product; the high molecular acid is an acid with the molecular weight more than 200, and the low molecular acid is an acid with the molecular weight less than 200;
mixing and heating the first intermediate product and the second intermediate product, heating to 85-95 ℃, continuing to react for 1-2 hours, adding deionized water, wherein the ratio of the addition amount of the deionized water to the molar weight of the isopropyl titanate is 1: 1-1.75: 1, and performing saponification and heat preservation for 20-40 min; gradually heating to 120 ℃ for dehydration;
continuously heating to 170-190 ℃ for high-temperature refining for 5-10 min, and then adding 10-65 parts by weight of base oil; slowly stirring, naturally cooling, grinding and homogenizing to obtain the high-performance composite titanium-based lubricating grease.
In some embodiments of the invention, the method comprises the following steps: the high molecular acid is stearic acid or 12-hydroxystearic acid.
In some embodiments of the invention, the low molecular acid is at least one of benzoic acid, terephthalic acid, and sebacic or succinic acid.
In some embodiments of the invention, the base oil is at least one of MVI500, 600N, 200 DN.
The titanium-based complex grease is prepared by any one of the preparation methods.
It is noted here that the above-described embodiments have at least the following advantages:
(1) the reaction raw materials selected by the invention are simple and easy to obtain and have low cost.
(2) The invention reduces the temperature of a mixed system when high molecular organic acid and low molecular organic acid react with isopropyl titanate respectively, and can reduce the volatilization amount of the isopropyl titanate to a certain extent and inhibit the hydrolysis of the isopropyl titanate on the premise of not influencing the normal running of the saponification reaction.
(3) The invention physically isolates the high molecular organic acid and the low molecular organic acid, and the two organic acids respectively react with the isopropyl titanate, thereby eliminating the competition of the two organic acids on the isopropyl titanate, improving the reaction degree of the two organic acids and the isopropyl titanate, and simultaneously reducing the residual quantity of the organic acids.
(4) The invention adopts multiple base oils with different viscosities, such as single base oil and compound base oil, to respectively prepare the composite titanium-based grease, and determines the proper base oil types, thereby indicating that the invention has good applicability to mineral base oils with different types and viscosities and can be used for preparing the composite titanium-based lubricating grease with better performance.
(5) According to the composite titanium-based lubricating grease prepared by the invention, high and low molecular organic acids are physically isolated in the preparation process, so that saponification reactions are carried out in different reaction kettles, the temperature of a saponification reaction system is reduced, the saponification reaction is carried out to a higher degree, the structure of the generated soap fiber is more stable, and the prepared composite titanium-based lubricating grease has the advantages of high dropping point, low oil separation rate of a steel mesh, good storage stability, qualified corrosion of a copper sheet and good wear and friction resistance even if no additive is added.
The following is further detailed with reference to specific examples:
example 1:
adding 14.75g of stearic acid and 35g of MVI500 base oil into a reaction kettle 1, adding 5.76g of benzoic acid and 35g of MVI500 base oil into the reaction kettle, respectively adding 14.75g of isopropyl titanate into the reaction kettles 1 and 2, stirring at the rotating speed of about 90 revolutions per minute, and heating to 65 ℃ for saponification;
(2) after reacting for 15min, pouring the mixture in the reaction kettle 2 into the reaction kettle 1 for mixing and heating, and heating to 90 ℃ for continuing the reaction;
(3) after reacting for 1.5h, adding 1.87g of deionized water, saponifying and preserving heat for 36 min; gradually heating to 120 ℃ for dehydration to remove redundant deionized water and isopropanol gas in the mixture until the mixture begins to have phase change;
(4) continuously heating to 185 ℃ for high-temperature refining for 5min, and then adding the rest 80g of base oil; slowly stirring, naturally cooling, grinding and homogenizing to obtain the high-performance composite titanium-based lubricating grease.
Example 2:
(1) adding 15.34g of 12-hydroxystearic acid, 17.5g of MVI500 and 17.5g of 600N compounded base oil into a reaction kettle 1, adding 5.66g of benzoic acid, 17.5g of MVI500 and 17.5g of 600N compounded base oil into a reaction kettle 2, respectively adding 14.5g of isopropyl titanate into the reaction kettles 1 and 2, stirring at the rotating speed of 90 revolutions per minute, and heating to 70 ℃ for saponification;
(2) after reacting for 20min, pouring the mixture in the reaction kettle 2 into the reaction kettle 1 for mixing and heating, and heating to 95 ℃ for continuing the reaction;
(3) after reacting for 1h, adding 2.34g of deionized water, saponifying and preserving heat for 40 min; gradually heating to 120 ℃ for dehydration to remove redundant deionized water and isopropanol gas in the mixture until the mixture begins to have phase change;
(4) continuously heating to 175 ℃ for high-temperature refining for 10min, and then adding the rest 40g of MVI500 and 40g of 600N base oil; slowly stirring, naturally cooling, grinding and homogenizing to obtain the high-performance composite titanium-based lubricating grease.
Example 3:
(1) adding 17.7g of stearic acid, 11.5g of base oil compounded by 200DN and 11.5g of base oil compounded by 600N into a reaction kettle 1, adding 7.52g of terephthalic acid, 11.5g of base oil compounded by 200DN and 11.5g of base oil compounded by 600N into a reaction kettle 2, respectively adding 17.7g of isopropyl titanate into the reaction kettles 1 and 2, stirring at the rotating speed of about 90 revolutions per minute, and heating to 65 ℃ for saponification;
(2) after reacting for 20min, pouring the mixture in the reaction kettle 2 into the reaction kettle 1 for mixing and heating, and heating to 85 ℃ for continuing the reaction;
(3) after reacting for 2h, adding 3.28g of deionized water, saponifying and preserving heat for 40 min; gradually heating to 120 ℃ for dehydration to remove redundant deionized water and isopropanol gas in the mixture until the mixture begins to have phase change;
(4) continuously heating to 190 ℃ for high-temperature refining for 5min, and then adding the remaining 47g of 200DN and 47g of 600N base oil; slowly stirring, naturally cooling, grinding and homogenizing to obtain the high-performance composite titanium-based lubricating grease.
Example 4:
(1) adding 11.8g of stearic acid, 20g of base oil compounded by 200DN and 20g of MVI500 into a reaction kettle 1, adding 8.87g of succinic acid, 20g of base oil compounded by 200DN and 20g of MVI500 into a reaction kettle 2, respectively adding 11.8g of isopropyl titanate into the reaction kettles 1 and 2, stirring at the rotating speed of about 90 revolutions per minute, and heating to 60 ℃ for saponification;
(2) after reacting for 15min, pouring the mixture in the reaction kettle 2 into the reaction kettle 1 for mixing and heating, and heating to 90 ℃ for continuing the reaction;
(3) after reacting for 1.5h, adding 2.34g of deionized water, saponifying and preserving heat for 30 min; gradually heating to 120 ℃ for dehydration to remove redundant deionized water and isopropanol gas in the mixture until the mixture begins to have phase change;
(4) continuously heating to 180 ℃ for high-temperature refining for 7min, and then adding the rest 40g of 200DN and 40g of MVI500 base oil; slowly stirring, naturally cooling, grinding and homogenizing to obtain the high-performance composite titanium-based lubricating grease.
Example 5:
(1) adding 14.92g of stearic acid, 25g of MVI500 and 12.5g of 600N compounded base oil into a reaction kettle 1, adding 5.24g of benzoic acid, 25g of MVI500 and 12.5g of 600N compounded base oil into a reaction kettle 2, respectively adding 14.92g of isopropyl titanate into the reaction kettles 1 and 2, stirring at a rotating speed of about 90 revolutions per minute, and heating to 65 ℃ for saponification;
(2) after reacting for 20min, pouring the mixture in the reaction kettle 2 into the reaction kettle 1 for mixing and heating, and heating to 95 ℃ for continuing the reaction;
(3) after reacting for 1.5h, adding 2.62g of deionized water, saponifying and preserving heat for 35 min; gradually heating to 120 ℃ for dehydration to remove redundant deionized water and isopropanol gas in the mixture until the mixture begins to have phase change;
(4) continuously heating to 185 ℃ for refining at high temperature for 10min, and then adding the rest 50g of MVI500 and 25g of 600N base oil; slowly stirring, naturally cooling, grinding and homogenizing to obtain the high-performance composite titanium-based lubricating grease.
The parameters of the inventive examples are compared with those of the prior art products in Table 1.
TABLE 1
It should be noted that the above embodiments can be freely combined as necessary. The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. The preparation method of the compound titanium-based lubricating grease is characterized by comprising the following steps:
heating 3-20 parts by weight of a polymeric acid, 8.75-22.5 parts by weight of a base oil and 2.5-17.5 parts by weight of isopropyl titanate to 60-70 ℃ for saponification reaction for 10-20 min to obtain a first intermediate product; heating 2-10 parts by weight of low molecular acid, 8.75-22.5 parts by weight of base oil and 2.5-17.5 parts by weight of isopropyl titanate to 60-70 ℃ for saponification reaction for 10-20 min to obtain a second intermediate product; the high molecular acid is an acid with the molecular weight more than 200, and the low molecular acid is an acid with the molecular weight less than 200;
mixing and heating the first intermediate product and the second intermediate product, heating to 85-95 ℃, continuing to react for 1-2 hours, adding deionized water, wherein the ratio of the addition amount of the deionized water to the molar weight of the isopropyl titanate is 1: 1-1.75: 1, and performing saponification and heat preservation for 20-40 min; gradually heating to 120 ℃ for dehydration;
continuously heating to 170-190 ℃ for high-temperature refining for 5-10 min, and then adding 10-65 parts by weight of base oil; slowly stirring, naturally cooling, grinding and homogenizing to obtain the high-performance composite titanium-based lubricating grease.
2. The method for preparing complex titanium-based grease of claim 1, comprising the steps of: the high molecular acid is stearic acid or 12-hydroxystearic acid.
3. The method of claim 1, wherein the low molecular acid is at least one of benzoic acid, terephthalic acid and sebacic acid or succinic acid.
4. The method for preparing complex titanium-based grease of claim 1, wherein the base oil is at least one of MVI500, 600N and 200 DN.
5. A complex titanium-based grease, characterized in that it is prepared by the method of any one of claims 1 to 4.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115197765A (en) * | 2022-06-22 | 2022-10-18 | 中国民用航空飞行学院 | Zirconium phosphate composite titanium-based lubricating grease and preparation method thereof |
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