Micro-nano mineral grain lubricating additive with self-repairing function, lubricating oil and production method
A technology of lubricating additives and mineral particles, applied in the direction of additives, lubricating compositions, petroleum industry, etc., can solve the problems of unstable actual effect, complex and uncertain serpentine composition, achieve good self-healing function, enhance interface phase Capacitive, good anti-wear and anti-friction properties
Inactive Publication Date: 2010-07-28
DALIAN MARITIME UNIVERSITY
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Problems solved by technology
In view of the complex and uncertain composition of serpentine, whether the mineral particles in the lubricating medium and the metal surface have a self-healing replacement reaction depends on various processes and conditions during the friction process, so the actual effect of its application is not stable enough The phenomenon
[0004] But so far, the use of fine inorganic materials such as nano-MgO to prepare additives makes the lubricant have the above two characteristics, that is, it has both the characteristics of wear resistance and friction reduction of nano-lubricating additives, and the addition of lubricating oil with self-repairing functions of mineral components. technology has not yet been reported
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Embodiment 1
[0022] 1) Preparation of nano MgO powder:
[0023] Take 9.4gMgCl 2 ·6H 2 0. 35ml of ethylene glycol and a small amount of polyvinylpyrrolidone (PVP) are added in a 100mL beaker, and the stirrer is heated with a magnetic heater to fully stir, so that it forms a polymer solution. Slowly add concentrated NH 3 ·H 2 O, producing a milky white colloid, continue to stir for 10 minutes to make it fully react. The slurry was left for 5h, centrifuged and washed with absolute ethanol, dried at 80°C, and calcined in a muffle furnace at 450°C for 3h to obtain off-white powder. The prepared MgO powder was analyzed by a scanning electron microscope, and the average particle size of MgO was calculated to be 50nm according to the particle size statistics of the electron microscope photos. The shape of the particles is spherical.
[0024] 2) Surface modification:
[0025] Take 1g of MgO powder calcined at 450°C for 3 hours in a beaker, take 95% ethanol solution containing 1.0% oleic acid...
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Abstract
The invention discloses a micro-nano mineral grain lubricating additive with self-repairing function, lubricating oil and a production method. The method comprises the following steps: preparing nano MgO grains by adopting a sol-gel method respectively; modifying the grains by adopting oleic acid as surface modification agent; and mixing the grains and the base lubricating oil according to a certain proportion to form a lubricating agent which contains the micro-nano mineral grain lubricating additive and has the self-repairing function. When a mechanical metal part rubbing pair works, the additive material in the lubricating agent and the iron-based metal on the rubbing surface undergo physical and chemical reactions so as to continually generate compact iron-based silicate metal ceramic layers, partially or totally recover the size of the abraded part and finish self-repairing of the abraded part in the running dynamic process of the parts. Compared with the base lubricating oil, the lubricating agent can remarkably prolong the service life of the parts, improve the rubbing surface hardness and finishment, and greatly reduce the friction coefficient.
Description
technical field [0001] The invention relates to a lubricating oil additive with anti-friction, anti-wear and self-repairing functions and its preparation technology, which belongs to the technical field of mechanical lubrication. Background technique [0002] Studies in recent years have shown that adding some modified nano-sized particles or nanoparticles and their dispersion stabilizers to lubricating oil can greatly improve the extreme pressure performance of lubricating oil. Russia uses nano-diamonds as lubricating oil additives to produce the brand N-50A running-in lubricant, and the Ukrainian Academy of Sciences has also developed similar lubricants, the brands are M5-20 and M5-21, which are specially used for internal combustion engine running-in. The use of this product can shorten the running-in time while improving the running-in quality, save fuel and prolong the life of the engine. If it is used for the lubrication of precision machining machine tools, it can re...
Claims
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IPC IPC(8): C10M125/10C10M177/00C10N30/06
Inventor 严志军朱新河程东严志宇马珂
Owner DALIAN MARITIME UNIVERSITY
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