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Self-repairing nanometer additive and preparation method thereof

A self-healing additive and nanotechnology, applied in the field of lubricating oil, can solve the problems of low friction coefficient, abrasive wear, high load and flash temperature, etc., to achieve good lubrication effect, prolong service life and reduce friction coefficient Effect

Active Publication Date: 2014-04-23
ZHANGJIAGANG TIANYUAN PAINTING & COATING APPL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, an ore powder additive with magnesium hydroxysilicate as the main component can repair the film thickness up to 0.1mm, but its working conditions require high load and flash temperature
It is difficult to reduce the friction coefficient of the current additives mainly composed of silica, which may be due to the new abrasive wear caused by the harder and larger silica particles

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] 95 parts of nano-silica, 3 parts of nano-graphite, 8 parts of nano-copper, 12 parts of magnesium hydroxysilicate, 8 parts of aluminum hydroxysilicate, 1.5 parts of dispersant, and nano-CaCO 3 1.5 parts, 1.2 parts of anti-oxidation corrosion agent; put into a ball mill at a speed of 400-450r / min, grind for 11-12 hours to obtain a dry powder; add 5-6mL of absolute ethanol for every 1g of dry powder, and add the dry powder and absolute ethanol together to another In a ball mill, adjust the rotating speed to 350-500r / min, and ball mill for 4-5 hours. After the ball milling, remove the absolute ethanol, vacuum dry, and grind to obtain the nanometer self-healing additive.

Embodiment 2

[0015] 92 parts of nano-silica, 1 part of nano-graphite, 5 parts of nano-copper, 10 parts of magnesium hydroxysilicate, 10 parts of aluminum hydroxysilicate, 2 parts of dispersant, and nano-Ca(OH) 2 1.8 parts, 0.6 parts of anti-oxidation corrosion agent; put into ball mill, rotate at 400-450r / min, grind for 11-12 hours to get dry powder; add 5-6mL of absolute ethanol for every 1g of dry powder, add dry powder and absolute ethanol together to another In a ball mill, adjust the rotating speed to 350-500r / min, and ball mill for 4-5 hours. After the ball milling, remove the absolute ethanol, vacuum dry, and grind to obtain the nanometer self-healing additive.

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PUM

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Abstract

The invention discloses a self-repairing nanometer additive and a preparation method of the self-repairing nanometer additive. The self-repairing nanometer additive is prepared from the following components in parts by weight: 90-95 parts of nanosilicon dioxide, 1-5 parts of nano graphite, 5-10 parts of nano-copper, 10-15 parts of magnesium silicate hydroxide, 8-12 parts of aluminium silicate hydroxide, 1-2 parts of dispersing agent, 1.2-1.8 parts of nanometer calcium carbonate or nanometer calcium hydroxide, and 0.3-1.2 parts of anti-oxygen corrosive agent. The self-repairing nanometer additive prepared by the above technical scheme can form a repairing film layer with certain strength at relatively low temperature and low load under the complex physical action and tribochemistry and tribo-electrochemical actions of the surface of a friction pair and under the synergistic effect of multiple self-repairing materials, so as to fill up material loss voids, restore the material design size to a certain extent and prolong the service life of the material; nano graphite in the formula is flaky, the self-repairing nanometer additive has good lubricating effect due to the existence of the solid lubricant (graphite), and the friction coefficient of the self-repairing nanometer additive is greatly reduced, therefore, the lubricating state of the former silicon dioxide additives is changed.

Description

technical field [0001] The invention relates to a nano self-healing additive and a preparation method thereof, belonging to the technical field of lubricating oil. Background technique [0002] The type of existing lubricant additive can roughly be divided into following several aspects: metal nano self-repair additive: as oil-soluble nano-copper and nanoscale zinc powder, tin powder etc.; Inorganic compound nano self-repair additive: as magnesium oxide, Copper oxide, silicon nitride, etc.; mineral powder self-healing additives: such as serpentine (magnesium hydroxysilicate), palygorskite (aluminum hydroxysilicate). [0003] They are characterized by forming a protective layer on the surface of the metal friction pair to block the direct contact of the friction pair material and greatly reduce the friction coefficient. And in the case of parts not being disassembled, online repair can be realized dynamically. For example, an ore powder additive with magnesium hydroxysilica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M163/00C10M125/02C10M125/26C10N30/06C10N30/08
Inventor 钱惠贤
Owner ZHANGJIAGANG TIANYUAN PAINTING & COATING APPL