CN100334187C - Method for preparing nano lubricating fluid comprising oleophilic metal sulfide - Google Patents
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Abstract
The present invention relates to a method for preparing metallic sulfide nano lubricating fluid with lipophilicity. The present invention takes organic metallic salt precursors and hydrogen sulfide gas as reactants to directly synthesize the mother solution of metallic sulfide nano-particles with lipophilicity from lubricating oil by way of in-situ synthesis, and metallic sulfide nano lubricating fluid with lipophilicity is obtained after the mother solution is directly conditioned and agitated together with the lubricating oil. The synthetic nano lubricating fluid of the present invention has good dispersion stability, the generation of nano-particles in the process of synthesis and surface modification are synchronously completed, and only nano-particles and surface modifiers but not surplus byproducts are generated in reaction. The present invention well solves the problem that nano-materials have poor dispersion stability in lubricating oil, and has the advantages of simple operation, no need of special technical equipment and easy industrialization. The nano lubricating fluid prepared in the present invention can reduce the friction coefficient, shorten the friction spot diameter and achieve the effects of wear resistance and friction reduction.
Description
Technical field
The present invention relates to a kind of preparation method who contains the lubricating fluid of nano material.
Background technology
The developmental level of lubricating oil additive is to weigh the important symbol of a national quality of lubrication oil.In recent years, because inorganic nano material has the special physicochemical performance, the research that nano material is applied to lubricating oil additive has been subjected to increasing attention.But because the surface of most of inorganic nano materials has hydrophobicity, it is dispersed in the lubricant medium through leaving standstill for a long time has deposited phenomenon and take place, this has limited inorganic nano material greatly in the lubricating oil additive Application for Field.And the interpolation of nano material to be having good dispersion and the long-acting prerequisite that stabilizes in lubricant medium, otherwise not only is difficult to bring into play its excellent tribological property, and in use stops up oil circuit and purifier because of reunion.Therefore, resolving the dispersion stabilization problem of nano material in the lubricating oil medium is one of gordian technique that nano material is applied to the lubricating oil additive field.
Inorganic nano material also is in the starting stage as the research of lubricating oil additive at present, and many basic research work also need to carry out energetically, especially solves the dispersion stabilization problem of inorganic nano material in lubricated wet goods organic medium.In order to improve its dispersion stabilization in lubricating oil, need carry out surface modification to inorganic nano material, thereby it can be used as lubricating oil additive.Preparation at present mainly contains two kinds as the method for the nano material of lubricating oil additive: first method is to prepare nano material earlier, with dispersion agent nano material is suspended in the lubricant medium again and uses as lubricating oil additive, as Chinese patent CN 1175621A, CN 1536058A.The deficiency of this method is that the finishing of nano material is complete inadequately, and nano material is distributed to often needs in the lubricating oil medium by technologies such as ultrasonic, violent mechanical stirring, for having relatively high expectations and shortcoming such as complex manufacturing technology of equipment; Second method is to add the chemical surface modifier in water or pure water mixed phase isopolarity reaction system, synthesize by chemical reaction and to have oil loving nano material, again it is scattered in nano material in the lubricated wet goods medium by certain dispersing method, as Chinese patent CN 1183461A, CN 1221748A, CN 1354056A.The deficiency of this method is owing to be the nano material of preparing in polar solvent, the surface hydrophilicity of nano material can strengthen to some extent, lipophilicity is not fine, and the post-processed work of nano material preparation as processes such as filtration, dryings in, the caking of nano material takes place easily.This shows, though these two kinds of methods have solved the compatibility issue between inorganic nano material and the lubricated wet goods nonpolar medium to a certain extent, but can only obtain the stably dispersing of short-term, through leaving standstill for a long time the change of inorganic nano material particle diameter still can appear greatly, phenomenons such as reunion take place, thereby had a strong impact on the quality of lubricating oil, and nano material has been dispersed in the lubricated wet goods lubricant medium complex manufacturing technology, the more high shortcoming of equipment requirements are arranged.
Summary of the invention
It is poor to the objective of the invention is at nano material dispersion stabilization in lubricated wet goods nonpolar medium, nano material is problem such as dispersing technology complexity in lubricated wet goods medium, a kind of directly method of original position nano materials in lubricated wet goods nonpolar medium is provided, directly the mother liquor that contains the higher concentration nano particle that is synthesized and lubricating oil are in harmonious proportion stirring then, promptly obtain containing the lubricating fluid of nano particle.
Technical scheme of the present invention:
A) preparation of organic metal salt presoma
Step 2 joins reaction raw materials 2 sodium oleates in the above-mentioned reaction vessel, and wherein the mol ratio of cupric chloride and sodium oleate is 1: 2, reacts 2～5h under 65～85 ℃ heating condition;
Step 3, reaction is isolated inorganic phase and organic phase after finishing from reaction solution, and washs more than three times with deionized water to organic phase;
Step 4 at 3～20KPa, is carried out underpressure distillation under 50～60 ℃ of conditions to organic phase, removes organic solvent and obtains the organic metal salt presoma;
B) original position of oleophilic metal sulfide is synthetic
Step 2 adds lubricating oil as reaction medium again in reaction vessel, wherein the content of organic metal salt presoma in lubricating oil is 0.1～1mol/Kg;
Step 3, the material in the reacting by heating container also keeps 25～35 ℃, is stirred to the organic metal salt presoma and is dissolved in the lubricating oil fully;
Step 4 slowly feeds the exsiccant hydrogen sulfide in reaction vessel, under 25～45 ℃ of temperature of reaction, continue stirring reaction 2～4h, and promptly obtaining concentration is w
1The mother liquor that contains the oleophilic metal sulfide nano particle, w
1Scope be 1.00～10.0%;
Concentration
Wherein M is the formula weight of metallic sulfide; N is the amount of substance of metallic sulfide, unit: mol; W is the quality of lubricating oil, unit: g;
C) preparation of nano lubricating fluid
With quality is m
1Above-mentioned mother liquor and quality be m
2Lubricating oil be in harmonious proportion stirring, promptly obtaining concentration is w
2Nano lubricating fluid, w
2Scope be 0.05～3.00%, determine the add-on m of lubricating oil according to following formula
2
The described mixed solvent of step 1 can also use the mixed solvent of normal heptane and dehydrated alcohol in the preparation of organic metal salt presoma, and its volume ratio is 7: 4.
The described reaction raw materials 1 of step 1 can also use the aqueous solution of copper sulfate, cupric nitrate, neutralized verdigris, nickelous chloride, single nickel salt, zinc chloride, zinc sulfate, zinc nitrate, zinc acetate, lead chloride, lead nitrate or plumbic acetate in the preparation of organic metal salt presoma, and its concentration range is 0.5～2mol/L.
The described reaction raw materials 2 of step 2 can also use potassium oleate in the preparation of organic metal salt presoma.
The described lubricating oil of step 2 is meant cut lubricating oil, hydro carbons lubricating oil, polyether class lubricating oil or silicone oil lubricating oil in the original position of oleophilic metal sulfide is synthetic.
In the preparation of organic metal salt presoma, the described mixed solvent of step 1 selects for use normal hexane and dehydrated alcohol for best, the described reaction raw materials 1 of step 1 selects for use cupric chloride, nickelous chloride for best, it is best that the described reaction raw materials 2 of step 2 is selected sodium oleate for use, and the optimum temps of the heating described in the step 2 is 70 ℃.In the original position building-up process of oleophilic metal sulfide, described organic metal salt presoma of step 1 and the oleic optimum mole ratio of coating materials are 1: 1.The described temperature of reaction of step 3, from saving the angle of the energy, the original position that can consider directly at room temperature to carry out oleophilic metal sulfide is synthetic.
The beneficial effect that the present invention has:
1. the oil loving nano metal sulfide particle grain of the present invention preparation, because surface modification is directly to carry out in the lubricating oil medium, so nano particle not only has good lipophilicity, and has better dispersion stabilization in lubricating oil.
2. this directly method of original position ucon oil additive in the lubricating oil medium of the present invention's proposition has only the generation of nano particle and coating materials in the building-up process, does not have unnecessary by product to generate, and has the simple advantage of operating process.
The present invention propose this directly in the lubricating oil medium method of original position ucon oil additive need not through traditional step as drying, filtration, washing etc., also need not nano particle joined it by means such as ultrasonic, vigorous stirring and lubricate in the wet goods medium.Only need mother liquor and lubricating oil mediation stirring can be obtained nano lubricating fluid.Therefore this invention has the characteristics not high to equipment requirements.
Description of drawings
Fig. 1 original position synthetic oleic acid modified nano copper sulfate particle transmission shape appearance figure.
Fig. 2 original position synthetic oleic acid modified nanometer nickel sulfide particle transmission shape appearance figure.
Fig. 3 copper sulphide nano lubricating oil additive adds the change curve of The friction coefficient interpolation concentration under the concentration in difference.
Fig. 4 nanometer nickel sulfide lubricating oil additive adds the change curve of The friction coefficient interpolation concentration under the concentration in difference.
Fig. 5 copper sulphide nano lubricating oil additive adds under the concentration wear scar diameter with the change curve that adds concentration in difference.
Fig. 6 nanometer nickel sulfide lubricating oil additive adds under the concentration wear scar diameter with the change curve that adds concentration in difference.
Wear scar diameter sem photograph under Fig. 7 straight lubrication oil lubricating condition (magnification * 100, * 1000).
Fig. 8 contains wear scar diameter sem photograph (magnification * 100, * 1000) under the 0.1% lipophilicity nano copper sulfate particle condition.
Fig. 9 contains wear scar diameter sem photograph (magnification * 100, * 1000) under the 0.3% lipophilicity nanometer nickel sulfide particle condition.
Embodiment
By example the specific embodiment of the present invention is described.
Example 1
A) preparation of organo-metallic mantoquita presoma
Step 2 joins 0.04mol reaction raw materials sodium oleate in the above-mentioned reaction vessel, reacts 3h under 70 ℃ heating condition;
Step 3, reaction is isolated inorganic phase and organic phase after finishing from reaction solution, and washs more than three times with deionized water to organic phase;
Step 4 at 3～20KPa, is carried out underpressure distillation under 60 ℃ of conditions to organic phase, removes organic solvent and obtains organo-metallic mantoquita presoma;
B) original position of oleophilic metal cupric sulfide is synthetic
Step 2 adds 100g hydro carbons lubricating oil as reaction medium again in reaction vessel, wherein the content of organo-metallic mantoquita presoma in lubricating oil is 0.2mol/Kg;
Step 3, the material in the reacting by heating container also keeps 30 ℃, is stirred to organo-metallic mantoquita presoma and is dissolved in the lubricating oil fully;
Step 4 slowly feeds the exsiccant hydrogen sulfide in reaction vessel, at 25 ℃ of following stirring reaction 4h, promptly obtain concentration and be 1.92% the mother liquor that contains the lipophilicity nano copper sulfate particle;
The calculation formula of concentration is:
Wherein M is the formula weight of metallic sulfide; N is the amount of substance of metallic sulfide, unit: mol; W is the quality of lubricating oil, unit: g;
C) preparation of nano lubricating fluid
The above-mentioned mother liquor of getting 2.0g, 4.0g, 8.0g, 10.0g, 20.0g successively is in harmonious proportion stirring with 74.8g, 72.8g, 43.2g, 28.4g, 18.4g hydro carbons lubricating oil respectively, promptly obtaining concentration is 0.05%, 0.1%, 0.3%, 0.5%, 1.0% contains lipophilicity copper sulphide nano lubricating fluid.
Determine the add-on m of lubricating oil according to following formula
2
This example approach is an optimum implementation.
Example 2
A) preparation of organo-metallic mantoquita presoma
Step 2 joins 12mol reaction raw materials sodium oleate in the above-mentioned reaction vessel, reacts 5h under 85 ℃ heating condition;
Step 3, reaction is isolated inorganic phase and organic phase after finishing from reaction solution, and washs more than three times with deionized water to organic phase;
Step 4 at 3～20KPa, is carried out underpressure distillation under 55 ℃ of conditions to organic phase, removes organic solvent and obtains organo-metallic mantoquita presoma;
B) original position of oleophilic metal cupric sulfide is synthetic
Step 2 adds the 2Kg polyether class lubricating oil as reaction medium again in reaction vessel, wherein the content of organo-metallic mantoquita presoma in lubricating oil is 1mol/Kg;
Step 3, the material in the reacting by heating container also keeps 32 ℃, is stirred to organo-metallic mantoquita presoma and is dissolved in the lubricating oil fully;
Step 4 slowly feeds the exsiccant hydrogen sulfide in reaction vessel, at 40 ℃ of following stirring reaction 2.5h, promptly obtain concentration and be 9.6% the mother liquor that contains the lipophilicity nano copper sulfate particle;
C) preparation of nano lubricating fluid
The above-mentioned mother liquor of getting 20.0g, 50.0g, 80.0g, 100.0g, 120.0g successively is in harmonious proportion stirring with 364.0g, 430.0g, 432.0g, 380.0g, 264.0g polyether class lubricating oil respectively, promptly obtaining concentration is 0.5%, 1.0%, 1.5%, 2.0%, 3.0% contains lipophilicity copper sulphide nano lubricating fluid.
Example 3
A) preparation of organo-metallic nickel salt presoma
Step 2 joins 0.08mol reaction raw materials sodium oleate in the above-mentioned reaction vessel, reacts 2.5h under 68 ℃ heating condition;
Step 3, reaction is isolated inorganic phase and organic phase after finishing from reaction solution, and washs more than three times with deionized water to organic phase;
Step 4 at 3～20KPa, is carried out underpressure distillation under 62 ℃ of conditions to organic phase, removes organic solvent and obtains organo-metallic nickel salt presoma;
B) original position of oleophilic metal nickelous sulfide is synthetic
Step 2 adds 200g hydro carbons lubricating oil as reaction medium again in reaction vessel, wherein the content of organo-metallic nickel salt presoma in lubricating oil is 0.2mol/Kg;
Step 3, the material in the reacting by heating container also keeps 32 ℃, is stirred to organo-metallic nickel salt presoma and is dissolved in the lubricating oil fully;
Step 4 slowly feeds the exsiccant hydrogen sulfide in reaction vessel, at 28 ℃ of following stirring reaction 3h, promptly obtain concentration and be 1.81% contain lipophilicity nanometer nickel sulfide particulate mother liquor;
C) preparation of nano lubricating fluid
The above-mentioned mother liquor of getting 2.0g, 4.0g, 8.0g, 10.0g, 20.0g successively is in harmonious proportion stirring with 70.4g, 68.4g, 40.3g, 26.2g, 16.2g hydro carbons lubricating oil respectively, promptly obtaining concentration is 0.05%, 0.1%, 0.3%, 0.5%, 1.0% contains lipophilicity nanometer nickel sulfide lubricating fluid.
Example 4
A) preparation of organo-metallic nickel salt presoma
Step 2 joins 2.4mol reaction raw materials potassium oleate in the above-mentioned reaction vessel, reacts 3.5h under 84 ℃ heating condition;
Step 3, reaction is isolated inorganic phase and organic phase after finishing from reaction solution, and washs more than three times with deionized water to organic phase;
Step 4 at 3～20KPa, is carried out underpressure distillation under 50 ℃ of conditions to organic phase, removes organic solvent and obtains organo-metallic nickel salt presoma;
B) original position of oleophilic metal cupric sulfide is synthetic
Step 2 adds 2Kg silicone oil lubricating oil as reaction medium again in reaction vessel, wherein the content of organo-metallic nickel salt presoma in lubricating oil is 0.5mol/Kg;
Step 3, the material in the reacting by heating container also keeps 35 ℃, is stirred to organo-metallic nickel salt presoma and is dissolved in the lubricating oil fully;
Step 4 slowly feeds the exsiccant hydrogen sulfide in reaction vessel, at 38 ℃ of following stirring reaction 3h, promptly obtain concentration and be 4.53% contain lipophilicity nanometer nickel sulfide particulate mother liquor;
C) preparation of nano lubricating fluid
The above-mentioned mother liquor of getting 25.0g, 50.0g, 80.0g, 100.0g, 150.0g successively is in harmonious proportion stirring with 201.5g, 252.0g, 282.4g, 202.0g, 189.8g silicone oil lubricating oil respectively, promptly obtaining concentration is 0.5%, 0.75%, 1.0%, 1.5%, 2.0% contains lipophilicity nanometer nickel sulfide lubricating fluid.
Example 5
A) preparation of organo-metallic zinc salt presoma
Step 2 joins 0.45mol reaction raw materials potassium oleate in the above-mentioned reaction vessel, reacts 4.5h under 75 ℃ heating condition;
Step 3, reaction is isolated inorganic phase and organic phase after finishing from reaction solution, and washs more than three times with deionized water to organic phase;
Step 4 at 3～20KPa, is carried out underpressure distillation under 58 ℃ of conditions to organic phase, removes organic solvent and obtains organo-metallic nickel salt presoma;
B) original position of oleophilic metal zinc sulphide is synthetic
Step 2 adds 0.5Kg silicone oil lubricating oil as reaction medium again in reaction vessel, wherein the content of organo-metallic zinc salt presoma in lubricating oil is 0.4mol/Kg;
Step 3, the material in the reacting by heating container also keeps 34 ℃, is stirred to organo-metallic zinc salt presoma and is dissolved in the lubricating oil fully;
Step 4 slowly feeds the exsiccant hydrogen sulfide in reaction vessel, at 42 ℃ of following stirring reaction 2h, promptly obtain concentration and be 3.88% the mother liquor that contains the lipophilicity zine sulfide nano particles;
C) preparation of nano lubricating fluid
The above-mentioned mother liquor of getting 20.0g, 50.0g, 80.0g, 100.0g, 120.0g successively is in harmonious proportion stirring with 135.2g, 208.7g, 230.4g, 158.7g, 112.8g cut lubricating oil respectively, promptly obtaining concentration is 0.5%, 0.75%, 1.0%, 1.5%, 2.0% contains lipophilicity zinc sulfide nano lubricating fluid.
Example 6
A) preparation of organo-metallic lead salt presoma
Step 2 joins 0.06mol reaction raw materials potassium oleate in the above-mentioned reaction vessel, reacts 5h under 82 ℃ heating condition;
Step 3, reaction is isolated inorganic phase and organic phase after finishing from reaction solution, and washs more than three times with deionized water to organic phase;
Step 4 at 3～20KPa, is carried out underpressure distillation under 57 ℃ of conditions to organic phase, removes organic solvent and obtains organo-metallic nickel salt presoma;
B) original position of oleophilic metal zinc sulphide is synthetic
Step 2 adds 0.3Kg silicone oil lubricating oil as reaction medium again in reaction vessel, wherein the content of organo-metallic zinc salt presoma in lubricating oil is 0.1mol/Kg;
Step 3, the material in the reacting by heating container also keeps 35 ℃, is stirred to organo-metallic zinc salt presoma and is dissolved in the lubricating oil fully;
Step 4 slowly feeds the exsiccant hydrogen sulfide in reaction vessel, at 30 ℃ of following stirring reaction 4.5h, promptly obtain concentration and be 2.39% the mother liquor that contains the lipophilicity zine sulfide nano particles;
C) preparation of nano lubricating fluid
The above-mentioned mother liquor of getting 10.0g, 15.0g, 20.0g, 25.0g, 30.0g successively is in harmonious proportion stirring with 18.9g, 56.7g, 43.7g, 34.8g, 5.9g hydro carbons lubricating oil respectively, promptly obtaining concentration is 0.25%, 0.5%, 0.75%, 1.0%, 2.0% contains lipophilicity lead sulfide nano lubricating fluid.
The performance evaluation of nano lubricating fluid:
Fig. 1 is example 1 an original position synthetic oleic acid modified nano copper sulfate particle transmission shape appearance figure.Fig. 2 is example 3 original position synthetic oleic acid modified nanometer nickel sulfide particle transmission shape appearance figures.As can be seen from the figure, no tangible agglomeration between nano particle.This is because the surface of inorganic nanoparticles is coated with one deck organic decoration layer, has reduced the surface energy of nano particle, has reduced the interaction force between nano particle, has stoped its reunion.Nano lubricating fluid is placed the reunion that nano particle can not take place for a long time, and this mainly is that the finishing of nano particle is simultaneously also carried out in lubricating oil because nano particle is directly synthetic in nonpolar lubricating oil.Just because of between coating materials and nano particle chemisorption having taken place, make nano particle have lipophilicity preferably, thereby strengthened the dispersion stabilization of nano particle in lubricating oil.
The nano lubricating fluid comprising oleophilic metal sulfide that example 1 and example 3 obtain is investigated its antiwear and friction reduction property on U.S. home-made FALEX-6 type four-ball tester.Test conditions is that the speed of mainshaft is 1450r/min, and load is 300N, and test period is 30min, and test temperature is a room temperature condition.Special-purpose GCr15 (AISI 52100) the ten grade standard steel balls of four-ball tester that used steel ball is produced for Shanghai Bearing Factory, diameter 12.7mm, hardness 62～64HRC.The concentration of testing used nano lubricating fluid is 0.05%, 0.1%, 0.3%, 0.5%, 1.0%.After the off-test, be the grinding defect diameter that the direct-reading type microscope of 0.01mm is tried under measuring 3 on the horizontal direction of polishing scratch and the vertical direction with precision, ask its mean value as test result, the difference of 3 parallel test results and mean value is not more than 5%; After friction-wear test finishes steel ball is total to 10min 3 times with the sherwood oil ultrasonic cleaning, seasoning adopts JEOL JSM35 type scanning electronic microscope (SEM) that observation analysis has been carried out on mill spot surface.
The oleophilic metal nano copper sulfate particle can significantly reduce the frictional coefficient of lubricating oil and reduce the degree of wear as can be seen from Fig. 3 and Fig. 5, and frictional coefficient and wear scar diameter all are to be the big trend in earlier little back with adding concentration, adding concentration is 0.1% o'clock, and frictional coefficient and wear scar diameter reach minimum value.
Oleophilic metal nanometer nickel sulfide particle also can significantly reduce the frictional coefficient of lubricating oil and reduce the degree of wear as can be seen from Fig. 4 and Fig. 6, and frictional coefficient and wear scar diameter all are to be the big trend in earlier little back with adding concentration, adding concentration is 0.3% o'clock, and frictional coefficient and wear scar diameter reach minimum value.
As can be seen from Figure 7, under the condition that straight lubrication oil lubricates, wear scar diameter is bigger, and mill spot surface ratio is more coarse, and ditch dug with a plow is darker, and the scratch degree is more serious, and this moment, the degree of wear was comparatively serious.
Obviously find out at the wear scar diameter that steel ball under the lubricated condition of oleophilic metal sulfide is arranged little manyly under obviously than straight lubrication oil lubricating condition from Fig. 8 and Fig. 9, and surface of friction pair is smooth, and ditch dug with a plow is more shallow, and the scratch degree is lighter.This is mainly with to contain a large amount of oil loving nano metal sulfide particle grains relevant in the lubricating oil, in friction process, nano particle and friction surface generation friction chemical reaction, can between friction pair, form firm lubricant film, make it become more smooth to friction surface reparation, thereby play wear-resistant effect.
Therefore, the oil loving nano metal sulphide of institute's synthetic of the present invention can effectively improve the antiwear and antifriction ability of lubricating oil.
Claims (5)
1. the preparation method of a nano lubricating fluid comprising oleophilic metal sulfide is characterized in that:
A) preparation of organic metal salt presoma
Step 1 joins the mixed solvent of normal hexane and dehydrated alcohol in the reaction vessel, and then to add reaction raw materials 1 concentration range be the copper chloride solution of 0.5～2mol/L, and wherein three's volume ratio is 7: 4: 3;
Step 2 joins reaction raw materials 2 sodium oleates in the above-mentioned reaction vessel, and wherein the mol ratio of cupric chloride and sodium oleate is 1: 2, reacts 2～5h under 65～85 ℃ heating condition;
Step 3, reaction is isolated inorganic phase and organic phase after finishing from reaction solution, and washs more than three times with deionized water to organic phase;
Step 4 at 3～20KPa, is carried out underpressure distillation under 50～60 ℃ of conditions to organic phase, removes organic solvent and obtains the organic metal salt presoma;
B) original position of oleophilic metal sulfide is synthetic
Step 1 joins above-mentioned organic metal salt presoma and coating materials oleic acid in another reaction vessel, and both mol ratios are 1: 2～2: 1;
Step 2 adds lubricating oil as reaction medium again in reaction vessel, wherein the content of organic metal salt presoma in lubricating oil is 0.1～1mol/Kg;
Step 3, the material in the reacting by heating container also keeps 25～35 ℃, is stirred to the organic metal salt presoma and is dissolved in the lubricating oil fully;
Step 4 slowly feeds the exsiccant hydrogen sulfide in reaction vessel, under 25～45 ℃ of temperature of reaction, continue stirring reaction 2～4h, and promptly obtaining concentration is w
1The mother liquor that contains the oleophilic metal sulfide nano particle, w
1Scope be 1.00～10.0%;
Wherein M is the formula weight of metallic sulfide; N is the amount of substance of metallic sulfide, unit: mol; W is the quality of lubricating oil, unit: g;
C) preparation of nano lubricating fluid
With quality is m
1Above-mentioned mother liquor and quality be m
2Lubricating oil be in harmonious proportion stirring, promptly obtaining concentration is w
2Nano lubricating fluid, w
2Scope be 0.05～3.00%, determine the add-on m of lubricating oil according to following formula
2
2. the preparation method of a kind of nano lubricating fluid comprising oleophilic metal sulfide according to claim 1, it is characterized in that the described mixed solvent of step 1 in the preparation of organic metal salt presoma uses the mixed solvent of normal heptane and dehydrated alcohol, its volume ratio is 7: 4.
3. the preparation method of a kind of nano lubricating fluid comprising oleophilic metal sulfide according to claim 1, it is characterized in that the described reaction raw materials 1 of step 1 in the preparation of organic metal salt presoma uses the aqueous solution of copper sulfate, cupric nitrate, neutralized verdigris, nickelous chloride, single nickel salt, zinc chloride, zinc sulfate, zinc nitrate, zinc acetate, lead chloride, lead nitrate or plumbic acetate, its concentration range is 0.5～2mol/L.
4. the preparation method of a kind of nano lubricating fluid comprising oleophilic metal sulfide according to claim 1 is characterized in that the described reaction raw materials 2 of step 2 uses potassium oleates in the preparation of organic metal salt presoma.
5. the preparation method of a kind of nano lubricating fluid comprising oleophilic metal sulfide according to claim 1 is characterized in that the synthetic middle described lubricating oil of step 2 of original position of oleophilic metal sulfide is meant cut lubricating oil, hydro carbons lubricating oil, polyether class lubricating oil or silicone oil lubricating oil.
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| CN1468945A (en) * | 2003-07-02 | 2004-01-21 | 清华大学 | Prepn of oil dispersed molybdenum disulfide |
| CN1611543A (en) * | 2003-10-30 | 2005-05-04 | 中国人民解放军后勤工程学院 | Heavy polymer / chalcogenide nano composite material in situ preparing method |
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| CN1775933A (en) | 2006-05-24 |
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