CN101555430A - Lubricating oil composition - Google Patents
Lubricating oil composition Download PDFInfo
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- CN101555430A CN101555430A CNA2008100916741A CN200810091674A CN101555430A CN 101555430 A CN101555430 A CN 101555430A CN A2008100916741 A CNA2008100916741 A CN A2008100916741A CN 200810091674 A CN200810091674 A CN 200810091674A CN 101555430 A CN101555430 A CN 101555430A
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- lubricating oil
- oil composition
- nano carbon
- metal
- carbon microsphere
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Abstract
The invention provides a lubricating oil composition comprising a base oil stock and carbon nanospheres, the surface of each carbon nanosphere is grafted with an alkyl group, and the carbon nanospheres are dispersed in the base oil stock, wherein the carbon nanosphere is in a hollow structure or is filled with metals, metal alloys, metallic oxides, metallic carbides, metal sulfides, metal nitrides or metal borides.
Description
[technical field]
The present invention relates to a kind of lubricating oil composition, particularly relate to a kind of lubricating oil composition that comprises nano carbon microsphere.
[background technology]
The polyhedron carbon that nano carbon microsphere is made up of in the mode of ball in the ball multilayer graphite linings structure bunch.Its particle diameter is mainly 30～40nm substantially between 3～100nm, and inside can be hollow (HollowNanocapsules) or filler metal (Metal Filled Nanocapsules).The graphite linings of nano carbon microsphere shell, its central part is six-ring, in the corner or the turning point then formed by five-ring, each carbon atom is all sp
2Hydridization.Nano carbon microsphere is because of special multilayer graphite linings structure has high thermal conductivity, high conductivity, intensity is good and advantage such as chemical stability.Because the graphite shell of nano carbon microsphere forms guard space, can avoid the interior metal particle aggregation then, spreads or influenced by external environment and oxidation, makes character such as inner nanometer metal structure and quantum effect be able to permanent preservation.
With the particulate state nano carbon microsphere as lubricating oil additive, difference than the flat graphite material of tradition is: the similar multiaspect dome (geodesic dome) of each shell of spherical nanoparticles, diameter about tens of to 100 nanometers, because of enclosed construction does not expose active border, make the lubricant quality of adding nano carbon microsphere superior, and possess the advantage that microelectronic is used.The lubricant that tradition is added the lamellar graphite material is made of the slip lamellar compound, it is a kind of smooth, slip glue of opening page structure, the power of can reducing friction, but because the stratiform border belongs to chemically reactive can slowly be decomposed and split then and is linked to the metallic surface of desiring to be lubricated.Spherical nanoparticles, its advantage are to utilize the rolling of similar fine small ball bearing to reduce lubricant friction and wearing and tearing, and its granular size can enter each slit, hole, hole along the metallic surface.In addition, do not having the active border that exposes in shape because of spherical nanoparticles, therefore this preferable lubricant can be resisted than rugged environment.
Yet, spherical nanoparticles does not make it be difficult for being scattered in the solvent because of there being the active border that exposes, and therefore how to overcome the interfacial property of nanoparticle and organic phase (lubricating oil), keeps interparticle dispersiveness, so that it brings into play the characteristic that reduces friction in lubricating oil, be an important gordian technique.
[summary of the invention]
One embodiment of the invention provide a kind of lubricating oil composition, comprising: oil base stock; And nano carbon microsphere, its surface grafting has alkyl, and it is scattered in this oil base stock.
The nano carbon microsphere of the present invention after modification, surface grafting has the alkyl molecule chain, can be dispersed in the lubricating oil, become splendid additive formulations, with the oilness that improves lubricating oil, repair polishing scratch, heat conduction efficiency and work-ing life, be fit to very much to be applied to roll prolong oil, thermal oil, contain immersion oil, chain oils, engine oil, machinery oil and vacuum shaft oil sealing material etc.
For feature of the present invention and advantage can be become apparent, related embodiment cited below particularly, and conjunction with figs. are described in detail below:
[embodiment]
One embodiment of the invention provide a kind of lubricating oil composition, comprising: oil base stock; And nano carbon microsphere, its surface grafting has alkyl, and it is scattered in the oil base stock.
Above-mentioned nano carbon microsphere surface can covalent linkage and alkyl bond, and grafts on the alkyl on nano carbon microsphere surface, and its carbon number is substantially between 12～18, for example the octadecyl of carbon number 18 (stearyl).Nano carbon microsphere can be hollow structure or is filled with metal, metal alloy, metal oxide, metallic carbide, metallic sulfide, metal nitride or metal boride.Metal is preferred with elements such as Co, Fe, Ni, La, Y or its combination again wherein as being Sc, V, Cr, Fe, Co, Ni, Y, Zr, Mo, Ru, Rh, Pd, La, Ce, Pr, Nd, Gd, Tb, Dy, Ho, Er, Tm, Lu, Ta, Os, Ir, Pt, Au, Th, U or its combination.The nano carbon microsphere shell can be pure carbon or is doped with nitrogen, phosphorus or boron.The particle diameter of nano carbon microsphere is substantially between 3～100nm, and great majority are 30～40nm.Lubricating oil composition of the present invention can use as for example rolling prolong oil, contain immersion oil, thermal oil, chain oils or vacuum machine oil.
Modified Nano carbon ball contained in the lubricating oil composition of the present invention has splendid rerum natura, and for example the free radical clearance can reach 1 * 10
8～2 * 10
8(g/l)
-1s
-1, the thermostability under oxygen can reach more than 600 degree Celsius, and the dispersiveness in solvent can reach 1～10mg/ml.
In general the addition of nano carbon microsphere of the present invention is difference to some extent according to the difference of oil base stock kind, accounts for about 0.05/1000th to percent 1 of lubricating oil composition weight percent greatly.If 1, under the addition of 000ppm, lubricating oil composition of the present invention is tested comparable general oil base stock loading with the SRV lubricants performance and is improved 56%, reaches 700N.
The modification procedure of nano carbon microsphere of the present invention is as follows.At first, nano carbon microsphere is scattered in the solvent of hydrogen peroxide for example, makes the nano carbon microsphere surface form the hydroxyl of covalency bond by the hydroxyl radical free radical addition reaction.Add the group that is formed in the nano carbon microsphere surface and be not limited to hydroxyl, also can form amido or carboxyl bond by suitable chemical reaction.Afterwards, the nano carbon microsphere mole number suitable that above-mentioned surperficial bond is had hydroxyl, the alkyl compound of carbon number 12～18 with it, for example the octadecyl of carbon number 18 places acidic solution to reflux and carries out addition reaction.Behind the purifying to be separated, can obtain surface grafting has stearic nano carbon microsphere product, as lubricating oil additive.
The nano carbon microsphere shell is the multilayer graphite linings structure of sealing, and inside is for hollow or be filled with metal.It has characteristics such as high surface area, Stability Analysis of Structures, heat conduction and removal free radical.The present invention add spherical nano carbon microsphere as lubricating oil additive to replace classic flat-plate shape graphite lubrication material, can improve high-tension lubrication, heat radiation and the free radical clearance of lubricating oil, be fit to be applied to wire rod processing and roll and prolong oil and precision optical machinery with containing immersion oil, thermal oil, chain oils or vacuum machine oil.And nano carbon microsphere can be dispersed in the lubricating oil after chemical modification, need not re-use dispersion agent, can keep oil plant character.
[embodiment]
[embodiment 1]
The preparation of oil solubility nanometer carbon ball
At first, the nano carbon microsphere that mean diameter is about 30nm is scattered in the hydrogen peroxide, makes nano carbon microsphere surface and hydroxyl form the covalency bond by the hydroxyl radical free radical addition reaction.Afterwards, the nano carbon microsphere CNC (OH) that above-mentioned surperficial bond is had hydroxyl
nReflux in acidic solution with the stearic acid (stearic acid) of suitable mole number and to carry out addition reaction.
Behind the purifying to be separated, can obtain CNC (OCOC
18)
nProduct is as lubricating oil additive.Sample is tested with the SRV lubricants performance, middle oily base oil loading 450N, and the loading of nano carbon microsphere lubricating oil improves 56%, reaches 700N.Other Physical Property Analysis sees also following table one.
Table one
Though the present invention discloses as above with embodiment, so it is not in order to limit the present invention.Any the technical staff in the technical field of the invention, without departing from the spirit and scope of the present invention, Ying Kezuo changes arbitrarily and retouching, and therefore, protection scope of the present invention should be as the criterion with appended claims institute restricted portion.
Claims (9)
1. lubricating oil composition comprises:
Oil base stock; And
Nano carbon microsphere, its surface grafting has alkyl, and it is scattered in this oil base stock.
2. lubricating oil composition as claimed in claim 1, wherein this nano carbon microsphere is with covalent linkage and this alkyl bond.
3. lubricating oil composition as claimed in claim 1, wherein the carbon number of this alkyl is roughly 12～18.
4. lubricating oil composition as claimed in claim 1, wherein this nano carbon microsphere is a hollow structure.
5. lubricating oil composition as claimed in claim 1, wherein this nano carbon microsphere is filled with metal, metal alloy, metal oxide, metallic carbide, metallic sulfide, metal nitride or metal boride.
6. lubricating oil composition as claimed in claim 5, wherein said metal are Sc, V, Cr, Fe, Co, Ni, Y, Zr, Mo, Ru, Rh, Pd, La, Ce, Pr, Nd, Gd, Tb, Dy, Ho, Er, Tm, Lu, Ta, Os, Ir, Pt, Au, Th, U or its combination.
7. lubricating oil composition as claimed in claim 6, wherein said metal are element or its combinations such as Co, Fe, Ni, La, Y.
8. lubricating oil composition as claimed in claim 1, wherein this nano carbon microsphere is doped with nitrogen, phosphorus or boron.
9. lubricating oil composition as claimed in claim 1, wherein the particle diameter of this nano carbon microsphere is substantially between 3～100nm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100916741A CN101555430A (en) | 2008-04-11 | 2008-04-11 | Lubricating oil composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100916741A CN101555430A (en) | 2008-04-11 | 2008-04-11 | Lubricating oil composition |
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| Publication Number | Publication Date |
|---|---|
| CN101555430A true CN101555430A (en) | 2009-10-14 |
Family
ID=41173717
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|---|---|---|---|
| CNA2008100916741A Pending CN101555430A (en) | 2008-04-11 | 2008-04-11 | Lubricating oil composition |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3091065A1 (en) | 2015-04-20 | 2016-11-09 | China Petroleum&Chemical Corporation | Lubricant composition, and preparation method and use thereof |
| CN110317659A (en) * | 2019-07-19 | 2019-10-11 | 西北工业大学 | A kind of organic Nano carbon balls lube oil additive and its preparation method and application |
| CN110591287A (en) * | 2019-09-06 | 2019-12-20 | 中国科学院兰州化学物理研究所 | Preparation method of epoxy resin-based nano composite material suitable for water lubrication working condition |
| CN111303962A (en) * | 2017-11-10 | 2020-06-19 | 李明 | Lubricating oil additive |
-
2008
- 2008-04-11 CN CNA2008100916741A patent/CN101555430A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3091065A1 (en) | 2015-04-20 | 2016-11-09 | China Petroleum&Chemical Corporation | Lubricant composition, and preparation method and use thereof |
| US9944883B2 (en) | 2015-04-20 | 2018-04-17 | China Petroleum & Chemical Corporation | Lubricant composition, and preparation method and use thereof |
| CN111303962A (en) * | 2017-11-10 | 2020-06-19 | 李明 | Lubricating oil additive |
| CN110317659A (en) * | 2019-07-19 | 2019-10-11 | 西北工业大学 | A kind of organic Nano carbon balls lube oil additive and its preparation method and application |
| CN110317659B (en) * | 2019-07-19 | 2021-12-07 | 西北工业大学 | Organic carbon nanosphere lubricating oil additive and preparation method and application thereof |
| CN110591287A (en) * | 2019-09-06 | 2019-12-20 | 中国科学院兰州化学物理研究所 | Preparation method of epoxy resin-based nano composite material suitable for water lubrication working condition |
| CN110591287B (en) * | 2019-09-06 | 2021-11-02 | 中国科学院兰州化学物理研究所 | Preparation method of epoxy resin-based nano composite material suitable for water lubrication working condition |
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Application publication date: 20091014 |