CN1660981A - Lubricating oil additive and preparation method - Google Patents
Lubricating oil additive and preparation method Download PDFInfo
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- CN1660981A CN1660981A CN 200410099286 CN200410099286A CN1660981A CN 1660981 A CN1660981 A CN 1660981A CN 200410099286 CN200410099286 CN 200410099286 CN 200410099286 A CN200410099286 A CN 200410099286A CN 1660981 A CN1660981 A CN 1660981A
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Abstract
An extreme-pressure antiwear additive for lubricating oil is prepared from basic oil, SiO2 nanoparticles, disperser and synergist.
Description
Technical field
The present invention relates to a kind of lubricating oil additive and preparation method thereof.
Background technology
Traditional lubrication oil antiwear, extreme-pressure additive adopts that to contain active element sulphur, phosphorus, chlorine be main compound, though they all have good abrasion resistant extreme-pressure, but the mechanism of action of these elements is to be cost with rational corrosion, and too much use also can cause environmental pollution and workers ' health is exerted an influence.The solid granule that someone also attempts some are had some soft metals such as stratiform or squama structure (as graphite, molybdenumdisulphide, tetrafluoroethylene etc.) material and lead, copper, borate is evenly dispersed in the lubricating oil, obtaining good lubricating effect, but there is the dispersion stabilization difference and easily produces problems such as precipitation.Nano material is meant by being of a size of the solid material that 1～100 nano superfine micro is formed because it has dimensional effect, quantum effect, surface effects, interfacial effect, thereby to have the not available physics-chem characteristic of traditional material.Increasingly mature along with the rise of nano material and preparation method, people prove that it has fabulous tribological property after to the tribology behavioral study of nano material, and after nanoparticle studied and inquires into as lubricating oil additive, the characteristics of finding the existing hydrodynamic lubrication of this type material have the advantage of solid lubrication again, it not only can form the film that one deck is easily sheared at friction surface, and can carry out to a certain degree filling and reparation to friction surface, play good lubrication, can be used as the novel lubricating additive.
German patent DE 3534143 relates to the high monodispersity atresia spherical SiO that a kind of average particle size range is 0.05～10 nanometer (standard deviation≤5%)
2The preparation method of particulate does not relate to nano silicon dioxide particles as lubricating oil additive.Chinese invention patent CN 1150958A discloses and a kind ofly has been made up of nanoparticles such as nano-silicon nitride and silicon-dioxide, low density heat resistant and wear resistant self-lubricating nano particulate is filled and is strengthened polymer composite, product has good self-lubricating property, and its application only limits to polymeric material field.CN 1183461A provides a kind of organic compounds containing sulfur modified metal two chalcogen compound nanoparticle and synthetic methods thereof, can be used as lubricating oil additive, but undeclared its action effect during as slip additive; CN 1180079A, CN 1354056A disclose the nano powder through fatty acid modifying metallic oxide or oxyhydroxide, and contain of the application of the organic compound modified metal copper nano granules of sulfo-phosphorus, but do not see that the commercial grade nano silicon dioxide particles is as the application of lubricating oil additive in lubricated field in lubricated field.
Summary of the invention
One of purpose of the present invention has provided a kind of lubricating oil additive of nano-silica-containing particulate, the lubricating oil that makes with this lubricating oil additive has the additive good dispersity, the characteristics that the extreme pressure property of lubricating oil and abrasion resistance are good have realized the application of nano silicon dioxide particles in lubricated field.Two of purpose of the present invention is the preparation methods that do not relate to the slip additive of nano-silica-containing particulate in the conventional art, and a kind of new preparation process lubricant oil additive is provided.This preparation method and above-mentioned lubricating oil additive adapt.
One of for achieving the above object, the technical solution used in the present invention is as follows: a kind of lubricating oil additive comprises following component by weight percentage:
A) 40～80% base oil;
B) 0.1～40% particle diameter is the silicon-dioxide of 0.1～100 nanometer;
C) 0.1～50% dispersing auxiliary;
D) 0.1～30% synergistic agent;
Wherein base oil is a mineral oil, and its 40 ℃ of kinematic viscosity range are 30～250 millimeters
2/ second; Dispersion agent is selected from alkenyl amide, contain the polyolefine of 4～10 carbon atoms, contain at least a in fatty alcohol-ether, shrink sorbitol monooleate, acrylate, oleic acid, glycol ester, succinate, lauryl alcohol ethylene oxide condensate, dodecylbenzene sulfonate, trihydroxy ethylamine oleate soap or the hexadecanol of 2～18 carbon atoms; Synergistic agent is selected from least a in phosphoric acid ester, borate, thiophosphatephosphorothioate or salt or the sulfide isobutene.
In the technique scheme, the consumption preferable range of base oil is 60～80% by weight percentage; The particle diameter preferable range of silicon-dioxide is 5～30 nanometers, and silicon-dioxide consumption preferable range is 1～20% by weight percentage; Dispersing auxiliary consumption preferable range is 1～25% by weight percentage; The alkenyl amide preferred version is selected from least a in mono alkenyl succimide, diene base succimide or the polyisobutene succinimide; The polyolefine preferred version that contains 4～10 carbon atoms is selected from least a in polyisobutene, polyisoprene, polyhexene or the poly-nonene; The fatty alcohol-ether preferred version that contains 2～18 carbon atoms is the fatty alcohol-ether that contains 10～18 carbon atoms; The acrylate preferred version is selected from methyl methacrylate, Jia Jibingxisuanyizhi, butyl methacrylate, methyl acrylate, ethyl propenoate or butyl acrylate.The consumption preferable range of synergistic agent is 1～20% by weight percentage; The phosphoric acid ester preferred version is selected from dibutyl phosphite, tritolyl phosphate, isooctyl phosphoric acid ester; Thiophosphatephosphorothioate or salt preferred version are selected from least a in triphenyl-thiophosphate, thiophosphatephosphorothioate, thiophosphoric acid ammonium, zinc dialkyl dithiophosphate or the dialkyl dithiophosphoric acid antimony.
For achieving the above object two, the technical solution used in the present invention is as follows: above-mentioned preparation process lubricant oil additive may further comprise the steps:
A) be to mix under 30～80 ℃ of conditions in first temperature in the desired amount with silicon-dioxide, dispersing auxiliary and base oil;
B) be 30～100 ℃ in second temperature, mixing speed is that the synergistic agent that adds aequum under 100～2000 rev/mins of conditions gets lubricating oil additive.
In the technique scheme, the first temperature preferable range is 50～70 ℃, and the second temperature preferable range is 40～60 ℃, and the mixing speed preferable range is 400～1000 rev/mins.The churning time preferable range is 0.5～24 hour, and more preferably scope is 2～5 hours.
Lubricating oil additive of the present invention is brown translucent liquid, has good dispersiveness in lubricating oil, is that a kind of effective lubricating oil pole is pressed wear preventive additive, with the present invention by weight 1-10% join in the lubricating oil, stir and can use.
Among the present invention, because with the active princlple of nano silicon as lubricating oil additive, and suitable dispersing auxiliary and synergistic agent have been added, make silica nanoparticles in lubricating oil, have good dispersiveness, thereby after being added in the lubricating oil, make lubricating oil have good extreme pressure property and abrasion resistance, the last non seizure load (P of its reflection oil product extreme pressure supporting capacity
B) having reached 1020 newton, the wear scar diameter (WSD) of reflection oil product abrasion resistance only is 0.34 millimeter.P wherein
BBe worth greatly more, the more little then lubricants performance of WSD value is good more, when using common hydrogenated base oil 150SN, and its P
BValue is 431 newton, and WSD is 0.55 millimeter, so after using lubricating oil additive of the present invention, makes the P of lubricating oil
BValue is the highest to have improved 136%, and the WSD value has reduced by 38%, makes the performance of lubricating oil obtain increasing substantially, and has obtained better technical effect.
The invention will be further elaborated below by embodiment.
Embodiment
[embodiment 1]
2.5 gram nano silicons (particle diameter 20 nanometers), 5 gram polyisobutene succinimides, 5 gram polyisobutene are added 35.5 gram base oils (32.83 millimeters of 40 ℃ of kinematic viscosity
2/ second) in, be heated to 70 ℃ and stirred 1 hour, add the acid dibutyl phosphite of 2.0 grams again, at 60 ℃, rotating speed is under 800 rev/mins of conditions, and powerful the stirring 4 hours gets lubricating oil additive.
[embodiment 2]
0.5 gram nano silicon (particle diameter 5 nanometers) and 2 gram shrink sorbitol monooleates and 4 gram methyl acrylates are added 47.5 gram base oils (93.88 millimeters of 40 ℃ of kinematic viscosity
2/ second) in, being heated to 60 ℃ and stirring 2 hours, add 3 gram tritolyl phosphates again, is under 1000 rev/mins of conditions at rotating speed, and powerful the stirring 2 hours gets lubricating oil additive.
[embodiment 3]
10.0 gram nano silicons (particle diameter 50 nanometers), 5.0 gram carbon 12 fatty alcohol polyglycol ethers, 10.0 gram shrink sorbitol monooleates are added 20 gram base oils (99.42 millimeters of 40 ℃ of kinematic viscosity successively
2/ second) in, be heated to 50 ℃, constant temperature stirred 1 hour, added 5.0 gram oil soluble potassium borates again, and at 50 ℃, rotating speed is under 400 rev/mins of conditions, and powerful the stirring 4 hours gets lubricating oil additive.
[embodiment 4]
3 gram nano silicons (particle diameter 25 nanometers), 4.5 gram shrink sorbitol monooleates, 4.5 gram oleic acid are added 33.0 gram base oils (42.19 millimeters of 40 ℃ of kinematic viscosity
2/ second) in, be heated to 55 ℃ and stirred 1 hour, add 5.0 gram oil soluble potassium borates again, at 60 ℃, rotating speed is under 500 rev/mins of conditions, and powerful the stirring 5 hours gets lubricating oil additive.
[embodiment 5]
2.5 gram nano silicons (particle diameter 95 nanometers), 7.5 gram shrink sorbyl alcohol list Witconol 2301s, 5.0 diene base succimides are added 33.75 gram base oils (135.2 millimeters of 40 ℃ of kinematic viscosity
2/ second) in, be heated to 60 ℃ and stirred 2 hours, add 1.25 grams again to zinc dialkyl dithiophosphate, at 70 ℃, rotating speed is under 600 rev/mins of conditions, and powerful the stirring 3 hours gets lubricating oil additive.
[embodiment 6]
2 gram nano silicons (particle diameter 10 nanometers), 5.0 gram mono alkenyl succimides and 4.0 gram ethylene glycol methyl esters are added base oils (189.39 millimeters of 40 ℃ of kinematic viscosity
2/ second) in, be heated to 55 ℃, constant temperature stirred 2 hours, added 3.0 gram thiophosphoric acid ammoniums again, and at 60 ℃, rotating speed is under 2000 rev/mins of conditions, and powerful the stirring 1 hour gets lubricating oil additive.
[embodiment 7]
Preparation method and condition by embodiment 1 prepare lubricating oil additive, just change polyisobutene succinimide into the lauryl alcohol ethylene oxide condensate, change polyisobutene into the triethylamine oleate soap.
[embodiment 8]
Preparation method and condition by embodiment 1 prepare lubricating oil additive, just change polyisobutene succinimide into Sodium dodecylbenzene sulfonate, change polyisobutene into ethyl succinate.
[embodiment 9]
With nano silicon lubricating oil additive prepared among the embodiment 1,2,3,4,5,6,7,8 with extreme-pressure anti-wear effect, join among the hydrogenated base oil 150SN with a certain amount of, with reference to GB12583-98, SH/T0189, with the last non seizure load (P of four-ball friction and wear test machine difference test sample product
B), wear scar diameter (WSD), its extreme pressure and abrasion resistance are estimated.Testing four used ball experimental machine is the MQ-800 four-ball friction and wear test machine that Jinan trier factory produces, and the endurance check condition is: 392 newton that load, experimental period 30 minutes, 1200 rev/mins of rotating speeds.
For the ease of contrast, commercial american energy is discharged among the nanometer low-friction surface properties-correcting agent ER of the company adding base oil 150SN, addition is its recommended density, surveys its last non seizure load and wear scar diameter respectively.The results are shown in Table 2.
Supporting capacity (the P of table 1 additive
BBe worth) and the abrasion resistance evaluation result
| Additive | Concentration (weight %) | ????P B(newton) | WSD (millimeter) |
| Base oil (150SN) | ????100 | ????431 | ????0.55 |
| Embodiment 1 | ????1.0 | ????834 | ????0.34 |
| ????2.5 | ????1020 | ????0.34 | |
| ????5 | ????932 | ????0.33 | |
| Embodiment 2 | ????10 | ????618 | ????0.41 |
| Embodiment 3 | ????5 | ????588 | ????0.39 |
| Embodiment 4 | ????5 | ????618 | ????0.30 |
| Embodiment 5 | ????5 | ????726 | ????0.39 |
| Embodiment 6 | ????5 | ????834 | ????0.38 |
| Embodiment 7 | ????5 | ????696 | ????0.39 |
| Embodiment 8 | ????5 | ????784 | ????0.40 |
| ????ER | ????5 | ????618 | ????0.40 |
Claims (9)
1, a kind of lubricating oil additive comprises following component by weight percentage:
A) 40～80% base oil;
B) 0.1～40% particle diameter is the silicon-dioxide of 0.1～100 nanometer;
C) 0.1～50% dispersing auxiliary;
D) 0.1～30% synergistic agent;
Wherein base oil is a mineral oil, and its 40 ℃ of kinematic viscosity range are 30～250 milli m2/Ss; Dispersion agent is selected from alkenyl amide, contain the polyolefine of 4～10 carbon atoms, contain at least a in fatty alcohol-ether, shrink sorbitol monooleate, acrylate, oleic acid, glycol ester, succinate, lauryl alcohol ethylene oxide condensate, dodecylbenzene sulfonate, trihydroxy ethylamine oleate soap or the hexadecanol of 2～18 carbon atoms; Synergistic agent is selected from least a in phosphoric acid ester, borate, thiophosphatephosphorothioate or salt or the sulfide isobutene.
2,, it is characterized in that the consumption of base oil is 60～80% by weight percentage according to the described lubricating oil additive of claim 1.
3, according to the described lubricating oil additive of claim 1, the particle diameter that it is characterized in that silicon-dioxide is 5～30 nanometers, and the silicon-dioxide consumption is 1～20% by weight percentage.
4,, it is characterized in that the dispersing auxiliary consumption is 1～25% by weight percentage according to the described lubricating oil additive of claim 1; Alkenyl amide is selected from least a in mono alkenyl succimide, diene base succimide or the polyisobutene succinimide; The polyolefine that contains 4～10 carbon atoms is selected from least a in polyisobutene, polyisoprene, polyhexene or the poly-nonene; The fatty alcohol-ether that contains 2～18 carbon atoms is the fatty alcohol-ether that contains 10～18 carbon atoms; Acrylate is selected from methyl methacrylate, Jia Jibingxisuanyizhi, butyl methacrylate, methyl acrylate, ethyl propenoate or butyl acrylate.
5,, it is characterized in that the consumption of synergistic agent is 1～20% by weight percentage according to the described lubricating oil additive of claim 1; Phosphoric acid ester is selected from dibutyl phosphite, tritolyl phosphate, isooctyl phosphoric acid ester; Thiophosphatephosphorothioate or salt are selected from least a in triphenyl-thiophosphate, thiophosphatephosphorothioate, thiophosphoric acid ammonium, zinc dialkyl dithiophosphate or the dialkyl dithiophosphoric acid antimony.
6, according to the described preparation process lubricant oil additive of claim 1, may further comprise the steps:
A) be to mix under 30～80 ℃ of conditions in first temperature in the desired amount with silicon-dioxide, dispersing auxiliary and base oil;
B) be 30～100 ℃ in second temperature, mixing speed is that the synergistic agent that adds aequum under 100～2000 rev/mins of conditions gets lubricating oil additive.
7, according to the described preparation process lubricant oil additive of claim 6, it is characterized in that first temperature is 50～70 ℃, second temperature is 40～60 ℃, mixing speed is 400～1000 rev/mins.
8,, it is characterized in that churning time is 0.5～24 hour according to the described preparation process lubricant oil additive of claim 6.
9, described according to Claim 8 preparation process lubricant oil additive is characterized in that churning time is 2～5 hours.
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|---|---|---|---|
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| CN1132917C (en) * | 2001-01-05 | 2003-12-31 | 中国石油化工股份有限公司 | Additive for lubricant oil |
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