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Metal/ ceramic nano composite additive of self-rehabilitation and its preparation method

A self-healing additive and nano-composite technology, used in additives, lubricating compositions, petroleum industry, etc., can solve the problems of increased recovery, poor lubricating oil, difficult to produce self-healing ceramic layers, etc., and achieve the effect of compensating for wear of parts

Inactive Publication Date: 2008-12-24
JIANGSU MOLEDN PETROCHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although a variety of nano-lubricating additives that have been introduced have a certain self-repair function and may achieve "zero wear", most of the existing additives are difficult to produce a very high hardness self-repair that has a metallurgical bond with the surface of the metal friction pair. Ceramic layer, once the friction environment exceeds the specific allowable range, the self-healing film will fall off and fail, which will have a bad impact on the lubricating oil. In addition, some lubricating additives also have problems such as high cost and complicated preparation process
The analysis of a large amount of data shows that so far, the ore powder self-repairing agent (patent No. 02101022.6, CN98121144) The self-repairing layer generated during the friction process has high hardness (microhardness as high as HV680~1145) and the function of metallurgical combination with the ferrous metal friction pair, and the dry friction coefficient of the self-repairing layer is extremely low (0.003~0.007), but its products are only suitable for steel-steel friction pairs, the repair time is long (1~100 hours) (or high mechanical friction is required), and the recovery of friction coefficient under oil lubrication conditions is increased (0.03~0.06 ) and less increase in lubricating oil wear scar diameter and extreme pressure value (ZMZ value increased by 10.6)

Method used

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  • Metal/ ceramic nano composite additive of self-rehabilitation and its preparation method
  • Metal/ ceramic nano composite additive of self-rehabilitation and its preparation method
  • Metal/ ceramic nano composite additive of self-rehabilitation and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0054] Example 1: Weigh 8.1g of metal nano-copper powder and 0.9g of nickel powder, and adopt the multi-gun DC arc plasma evaporation method to prepare metal nano-copper-nickel composite powder with an average particle size of 54nm, weigh 2.5g of oleic acid and add 84g of 15W base oil Add metal nano-copper-nickel composite powder, disperse for 15-60 minutes with a high-speed disperser at a speed of 600-3000 rpm, add 3g of castor oil, 0.5g of MoDDP, and 0.5g of T154 to the obtained metal nano-dispersion, Grind T2020.5g in a ball mill for 20 minutes to 2 hours to obtain Additive B. Measure 2 grams of metal nano-powder per liter of lubricating oil and add it to Kia commercial vehicle lubricating oil for testing. The vehicle has driven 60,000 kilometers before the test. The original long-term addition of conventional lubricating additives, the engine noise, vibration, and lubricating oil has turned black. About 20 minutes after injecting the additive, the engine noise and vibratio...

example 2

[0055] Example 2: First, after 10.5g of serpentine is crushed and ball milled to about 30 microns, after weighing and preparing serpentine powder, 4.5g of magnesium oxide, 3g of sodium hexametaphosphate, and 70.8g of 15W base oil, the After the ore powder is ball-milled to 80 nanometers, add nano-Ca(OH) 2 5g, nanometer graphite powder 3g, nanometer Fe 2 o 3 2g, Nano Ce 2 o 30.2g, T5011g was further ball milled for 120min to obtain the additive A. According to the amount of 0.08 grams of nano ore powder per liter of lubricating oil, add it to the motorcycle lubricating oil for the test. The car has driven 25,000 kilometers before the test. The engine noise is loud, the vibration is big, and the power is insufficient. About 20 minutes after the additive is injected, the engine noise, The vibration is obviously reduced, the engine is obviously increased in about 30 minutes, and the fuel saving effect reaches an average of 12.6%. After traveling 500 kilometers, engine noise a...

example 3

[0056] Example 3: After compounding 10 g of additive B in Example 1 and 40 g of additive A powder in Example (2), ball milling and mixing for 80 minutes prepared additive C, which was added to the lubricating oil of trucks used in mines for testing. Before the test, it had traveled about 150,000 kilometers, and the engine was noisy, vibrating, and lacking in power. About 40 minutes after the injection of the additive, the noise and vibration of the engine are significantly reduced, the power is increased, the blue smoke in the exhaust gas is significantly reduced, and the average fuel saving effect reaches 15.6%.

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Abstract

The invention relates to a metal / ceramic nanocomposite self-healing additive, which is made of metal nanopowder and nanoscale natural ore powder as the main raw materials, supplemented with cleaning and dispersing agents, catalysts, antioxidants, solvents and other materials after certain process conditions and High-performance nanocomposite self-healing additives for lubricating oils, greases or ultrasonic media made in the production step. Its advantage is that it can quickly form a high-hardness metallurgical bonded self-repairing protective layer on the surface of various metal friction pairs, and automatically adjust the thickness of the self-repairing protective layer according to the friction force and the friction pair gap, so as to optimize the friction pair gap and significantly improve The physical and chemical properties of the surface of the friction pair, energy saving and environmental protection, greatly prolong the service life of machine parts and the period of machine overhaul. The invention is widely used in improving the lubricating performance of the friction pair.

Description

Technical field: [0001] The invention relates to the field of development and application of new nanometer materials, in particular to the formulation, preparation and application method of a metal / ceramic nanocomposite self-repairing additive in different friction situations. Background technique: [0002] Friction and wear are natural phenomena that commonly occur during the operation of mechanical equipment, and are also one of the three major causes of material and equipment damage and failure (wear, corrosion and fatigue fracture). According to statistics, 1 / 3 to 1 / 2 of the world's production energy is lost in friction and wear. The annual waste of resources caused by friction and wear in the United States is nearly 200 billion US dollars, and the annual loss caused by friction and wear in China reaches hundreds of billions of yuan. . Reducing wear and energy consumption and improving equipment utilization have always been one of the important research contents of coun...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M103/06C10M125/04C10M125/26
Inventor 匡庶张振忠郭航王宙吴燕
Owner JIANGSU MOLEDN PETROCHEM
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