CN103333727B - Nanosilicon dioxide and nano-graphite composite self-repairing lubricating additive and preparation method thereof - Google Patents
Nanosilicon dioxide and nano-graphite composite self-repairing lubricating additive and preparation method thereof Download PDFInfo
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- CN103333727B CN103333727B CN201310275524.7A CN201310275524A CN103333727B CN 103333727 B CN103333727 B CN 103333727B CN 201310275524 A CN201310275524 A CN 201310275524A CN 103333727 B CN103333727 B CN 103333727B
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Abstract
The invention provides a nanosilicon dioxide and nano-graphite composite self-repairing lubricating additive and a preparation method thereof. The method comprises steps of: mixing a nanosilicon dioxide powder and a nano-graphite powder to obtain a mixed powder containing 95-99 wt% of silica and 1-5wt% of graphite; adding a lanthanum chloride powder accounting for 5-10 wt% of the mixed powder; diluting oleic acid and sorbitan fatty acid ester respectively accounting for 5wt% of the mixture of the mixed powder and the lanthanum chloride powder in base oil; then adding the mixed powder and base oil containing oleic acid and the Span 80 to a planetary ball mill; and conducting ball milling for 2 h at a rotary speed of 300 rpm to obtain the nanosilicon dioxide and nano-graphite composite self-repairing lubricating additive. According to the invention, nanosilicon dioxide and nano-graphite are compounded, rare earth elements are employed to to promote the reaction and accelerate the penetration, and utilizes friction chemical reaction to realize the goal of strengthening and repairing the friction surface material.
Description
Technical field
What the present invention relates to is a kind of slip additive, and that the present invention also relates to is a kind of preparation method of slip additive.Specifically a kind ofly can produce slip additive of selfreparing effect and preparation method thereof.
Background technology
The type of existing lubricant additive roughly can be divided into 3 aspects: 1. metal nano additive of self-rehabilitation: such as oil solubility nanometer copper and nano level zinc powder, glass putty etc.2. mineral compound Nanoparticle Self-repairing Additives: as magnesium oxide, cupric oxide, silicon nitride etc.3. mineral powder additive of self-rehabilitation: mainly refer to serpentine (hydroxyl magnesium silicate) at present, polygorskite (hydroxyl pure aluminium silicate).
Their feature forms layer protective layer at surfaces of metallic rubbing pairs, intercepts the direct contact of friction pair material, significantly reduce frictional coefficient.And when part is not dismantled, dynamic realization is repaired online.Be such as an ore powder additive for main component with hydroxyl magnesium silicate, repair membrane thickness can reach 0.1mm, but its working condition needs higher load and flash temperature.Its frictional coefficient of additive of current with silicon-dioxide is major ingredient is all difficult to fall too low, and this may be because harder and larger-size silica dioxide granule causes new abrasive wear.
Summary of the invention
The object of the present invention is to provide a kind of work-ing life that can extend material, high lubricating effect, frictional coefficient are low, nano silicon with low cost and nano-graphite compound selfreparing slip additive.The present invention also aims to the preparation method that a kind of nano silicon and nano-graphite compound selfreparing slip additive are provided.
The object of the present invention is achieved like this:
Nano silicon of the present invention and nano-graphite compound selfreparing slip additive are by the mixed powder formed of massfraction to be the SiO 2 powder of 95%-99% and massfraction be 1%-5% powdered graphite, and the Lanthanum trichloride powder of 5%-10% of the quality accounting for mixed powder is made.
The preparation method of nano silicon of the present invention and nano-graphite compound selfreparing slip additive is:
(1) by nano-silica powder, Nano graphite powder pulverize for ball mill requirement charging precision;
(2) nano grade silica particles is mixed with nano-graphite powder the mixed powder formed, wherein the massfraction of silicon-dioxide is 95%-99%, the massfraction of graphite is 1%-5%, then adds the Lanthanum trichloride powder of quality 5%-10% of mixed powder;
(3) oleic acid and the Si Pan 80(sorbitan fatty(acid)ester of the mixed powder quality 5% of three is got respectively) be diluted in base oil, then mixed powder and the base oil being dissolved with oleic acid and Si Pan 80 are joined in planetary ball mill, under the rotating speed of 300 turns/min, ball milling obtains nano silicon and nano-graphite compound selfreparing slip additive for 2 hours.
Nano silicon of the present invention and nano-graphite compound selfreparing slip additive are added into in lubricating oil according to the ratio that massfraction is 2%, fully stir or ultrasonic wave dispersion, both can obtain the lubricating oil containing composite additive.
During work, on the one hand, spherical nano-sized crystal silicon-dioxide and nano-grade Graphite Powder 99 are free in lubricant medium, and the cut of surface of friction pair and ditch dug with a plow place have a large amount of surface energy to produce, and these nanoparticles are just assembled in high-energy regions, adsorb, precipitate and last melting is sprawled.On the other hand, when friction temperature constantly raises, under the katalysis of rare earth element Lanthanum trichloride, through chemical process finishing, there is highly active nanoparticle, the wink produced when rubbing gentle flash-point etc. extraneous urge under, complicated chemical reaction occurs, and production intensity is higher and have certain thickness repair membrane.
The invention has the beneficial effects as follows:
(1) the present invention is adopted, under the physical action of surface of friction pair complexity, tribo-chemistry and triboelectricity chemical action, under the catalysis of rare earth element Lanthanum trichloride, can at relatively low temperature and load, form the repair membrane that one deck has some strength, material for repairing loss space, to a certain extent restorer size, extend its work-ing life.
(2) adopt the present invention, in the form of sheets, concentration is 50ppm(50 μ g/ml to the nano-graphite in formula) left and right, due to the existence of solid lubricant graphite, can obtain good lubricant effect, frictional coefficient reduces greatly, changes the lubricating status of silica-based additive in the past.
(3) preparation technology of the present invention and surface modification processes is simple to operate, is easy to left-hand seat.
(4) raw material of the present invention draws materials approach extensively, with low cost.
Embodiment
Illustrate below and the present invention is described in more detail.
Embodiment one:
(1) by nano-silica powder, Nano graphite powder pulverize for ball mill requirement charging precision;
(2) nano grade silica particles is mixed with nano-graphite powder the mixed powder formed, wherein the massfraction of silicon-dioxide is 95%-97%, and graphite is 3%-5%, then adds the Lanthanum trichloride powder of quality 5%-10% of mixed powder;
(3) oleic acid and the Si Pan 80(sorbitan fatty(acid)ester of the mixed powder quality 5% of three is got respectively) be diluted in base oil, then mixed powder and the base oil being dissolved with oleic acid and Si Pan 80 are joined in planetary ball mill, under the rotating speed of 300 turns/min, ball milling obtains nano silicon and nano-graphite compound selfreparing slip additive for 2 hours.
The slip additive that present embodiment obtains has and more excellent falls special efficacy of rubbing, and can effectively improve mechanical means last non seizure load.
Embodiment two:
(1) by nano-silica powder, Nano graphite powder pulverize for ball mill requirement charging precision;
(2) nano grade silica particles is mixed with nano-graphite powder the mixed powder formed, wherein the massfraction of silicon-dioxide is 97%, and graphite is 3%, then adds the Lanthanum trichloride powder of quality 5%-10% of mixed powder;
(3) oleic acid and the Si Pan 80(sorbitan fatty(acid)ester of the mixed powder quality 5% of three is got respectively) be diluted in base oil, then mixed powder and the base oil being dissolved with oleic acid and Si Pan 80 are joined in planetary ball mill, under the rotating speed of 300 turns/min, ball milling obtains nano silicon and nano-graphite compound selfreparing slip additive for 2 hours.
The slip additive that present embodiment obtains more easily forms repair layer, and the adhesive capacity of repair layer is better than embodiment one.
Claims (3)
1. a preparation method for nano silicon and nano-graphite compound selfreparing slip additive, is characterized in that:
(1) by spherical nano-sized crystal silicon dioxide powder, nano-grade Graphite Powder 99 pulverize for ball mill requirement charging precision;
(2) spherical nano-sized crystal SiO 2 powder is mixed with nano-grade powdered graphite the mixed powder formed, wherein the massfraction of silicon-dioxide is 95%-99%, the massfraction of graphite is 1%-5%, then adds the Lanthanum trichloride powder of quality 5%-10% of mixed powder;
(3) oleic acid and the sorbitan fatty(acid)ester of getting the mixed powder quality 5% of three are respectively diluted in base oil, then mixed powder and the base oil being dissolved with oleic acid and Si Pan 80 are joined in planetary ball mill, under the rotating speed of 300 turns/min, ball milling obtains nano silicon and nano-graphite compound selfreparing slip additive for 2 hours.
2. the preparation method of nano silicon according to claim 1 and nano-graphite compound selfreparing slip additive, is characterized in that: the massfraction of graphite is 3%-5%.
3. the preparation method of nano silicon according to claim 2 and nano-graphite compound selfreparing slip additive, is characterized in that: the massfraction of graphite is 3%.
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| CN201310275524.7A CN103333727B (en) | 2013-07-03 | 2013-07-03 | Nanosilicon dioxide and nano-graphite composite self-repairing lubricating additive and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103740441B (en) * | 2013-12-18 | 2015-07-15 | 张家港市林达外加剂厂 | Self-repairing nanometer additive and preparation method thereof |
| RU2584155C2 (en) * | 2014-06-16 | 2016-05-20 | Общество с ограниченной ответственностью "Базис" | Additive to lubricating oils and plastic lubricants |
| CN105219495A (en) * | 2015-10-13 | 2016-01-06 | 惠州市中壳润滑油有限公司 | A kind of high-effect wear-resistant energy-saving lubricant oil and preparation method thereof |
| CN110373259A (en) * | 2019-06-28 | 2019-10-25 | 中国矿业大学 | The preparation and its abrasion resistance detection method of mine hoisting steel cable modified lubricating grease |
| CN110938770B (en) * | 2019-12-26 | 2020-10-23 | 中国科学院兰州化学物理研究所 | Dynamic sealing material and preparation method and application thereof |
| CN112133912B (en) * | 2020-10-27 | 2023-02-14 | 巴中意科碳素股份有限公司 | Modified graphite and preparation method thereof |
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| CN102433204A (en) * | 2011-10-15 | 2012-05-02 | 深圳市优宝惠新材料科技有限公司 | Valve element sealing lubricating agent composition |
| CN102899153A (en) * | 2012-10-12 | 2013-01-30 | 深圳清华大学研究院 | Water-based lubricant composition for ceramic friction pair |
| CN102925272A (en) * | 2012-10-26 | 2013-02-13 | 孙兵 | Water-lubricated wear-resistant cooling liquid and preparation method thereof |
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| CN1232839A (en) * | 1999-03-17 | 1999-10-27 | 中国科学院兰州化学物理研究所 | Self-lubricating composite material and its preparation |
| US7994105B2 (en) * | 2007-08-11 | 2011-08-09 | Jagdish Narayan | Lubricant having nanoparticles and microparticles to enhance fuel efficiency, and a laser synthesis method to create dispersed nanoparticles |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102433204A (en) * | 2011-10-15 | 2012-05-02 | 深圳市优宝惠新材料科技有限公司 | Valve element sealing lubricating agent composition |
| CN102899153A (en) * | 2012-10-12 | 2013-01-30 | 深圳清华大学研究院 | Water-based lubricant composition for ceramic friction pair |
| CN102925272A (en) * | 2012-10-26 | 2013-02-13 | 孙兵 | Water-lubricated wear-resistant cooling liquid and preparation method thereof |
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