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Method for achieving self-lubrication and high-friction reversibility of solid-liquid interface

A solid-liquid interface, self-lubricating technology, applied in the field of tribology, can solve the problems of volatile lubricating oil, lubricating oil loss, metal corrosion, etc., to avoid corrosion problems, reduce losses, and prolong the life of parts

Inactive Publication Date: 2019-11-05
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, it is known that traditional lubricating oil will encounter the following problems in the process of use: traditional lubricating oil will be squeezed out of the surface that needs to be lubricated when the pressure is too high, resulting in loss of lubricating oil; traditional lubricating oil is relatively easy to volatilize, Therefore, it cannot be used in a vacuum limit environment; some lubricating oils have added halogen elements during the preparation process, which will cause metal corrosion

Method used

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  • Method for achieving self-lubrication and high-friction reversibility of solid-liquid interface
  • Method for achieving self-lubrication and high-friction reversibility of solid-liquid interface

Examples

Experimental program
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Effect test

Embodiment 1

[0028] Step 1: Prepare the sample. Specifically include the following steps:

[0029] Step 1.1: Prepare an ionic liquid-base oil solution with a molar ratio of 1:5 to 1:25;

[0030] Step 1.2: Dissolve the ionic liquid-base oil solution prepared in 1.1 in absolute ethanol at a volume ratio of 1:100000 to make a mixed solution: measure 100 mL of ethanol and 1 μL of ionic liquid-base oil solution and mix them, and then ultrasonically Vibrate at 50kHz for 30min to ensure uniform mixing;

[0031] Step 1.3: Cut the titanium sheet as the substrate, place it in 10mL ethanol and oscillate ultrasonically at 50KHz for 10min to remove surface dirt;

[0032] Step 1.4: Take out the titanium piece, dry it naturally and place it in a beaker, use a pipette to absorb 10mL of the mixed solution obtained in 1.2, drop it onto the surface of the titanium piece in the beaker, and immerse the titanium piece;

[0033] Step 1.5: Seal with plastic wrap, leave holes on the side, and dry naturally at r...

Embodiment 2

[0035] Similar to Example 1, the difference is that the ionic liquid in Example 1 [P 6,6,6,14 ] + [BOB] - Change to [P 6,6,6,14 ] + [BMB] - , and other conditions remain the same.

Embodiment 3

[0037] Similar to Example 1, the difference is that the ionic liquid in Example 1 [P 6,6,6,14 ] + [BOB] - Change to [P 6,6,6,14 ] + [DCA] - , and other conditions remain the same.

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Abstract

The invention discloses a method for achieving the self-lubrication and high-friction reversibility of a solid-liquid interface. The method comprises: completely mixing an ionic liquid and base oil according to a molar ratio of 1:5-1:25 to prepare a solution; and spreading the obtained solution on a clean Ti substrate to obtain a Ti sheet having a lubricant attached to the surface. According to the present invention, by mixing the prepared ionic liquid and a certain amount of the base oil, the self-lubrication and high-friction reversibility of the solid-liquid interface on the metal surface can be achieved, such that the method can be expected to be used for the transmission braking devices of train rails, mechanical gears, micro-electromechanical systems, vehicles, ships and the like soas to reduce the loss caused by friction; and the prepared ionic liquid has high viscosity and can form a large number of molecular bonds between the solid-liquid interface, such that the prepared ionic liquid can remain on the solid surface for a long time so as to overcome the problem of ionic liquid extruding possibly caused by high load.

Description

technical field [0001] The invention belongs to the field of tribology, in particular to a method for realizing self-lubrication of solid-liquid interface and high friction reversibility. Background technique [0002] In today's field of tribology, traditional lubricating oils that are widely used still comply with Amontons' laws, that is, the friction force is proportional to the normal pressure and satisfies the relationship of F=μN (where F is friction, N is the normal pressure, μ is the friction coefficient). Under the premise of a certain friction coefficient, it is necessary to reduce the load while pursuing a small friction force, but the reduction of the load cannot fully meet the actual application. However, the method involved in this solution changes the above relationship, as follows: [0003] When studying the lubricating properties of ionic liquids, it was found that in addition to the properties of ionic liquids that would lead to the phenomenon of "friction...

Claims

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Application Information

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IPC IPC(8): C10M169/04F16D69/02C10N30/06
CPCC10M169/04C10M2223/06C10N2030/06F16D69/027F16D2200/003
Inventor 瞿振宇廖炯焘范淇安蓉邱秀华
Owner NANJING UNIV OF SCI & TECH