Nano TiO2/nano ZnO compounded lubricating oil additive and preparation method thereof

A lubricating oil additive and nanotechnology, applied in the field of lubrication, can solve problems such as the great influence of the physical properties of the liquid, the increase of the friction coefficient of the friction surface, and the maintenance of the bearing capacity of the liquid film, so as to improve the continuous stability, reduce the friction coefficient, and transfer the friction. The effect of coefficients

Active Publication Date: 2014-12-10
南宁飞日润滑科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the movement of the friction surface or changes in environmental factors, such as temperature, pressure, etc., which have a great influence on the physical properties of the liquid, it is difficult to maintain the carrying capacity of the liquid film on the friction surface, so that the asperities on the rough surface contact and the friction of the friction surface The increase of the coefficient will cause wear on the metal surface. Therefore, the lubricating effect cannot meet the requirements of many applications if only lubricating oil is used.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A kind of nano TiO 2 / Nano ZnO composite lubricating oil additive, the nano TiO 2 / The addition of nanometer ZnO is 0.02%.

[0021] The nano-TiO 2 The particle size of ZnO is 10nm, the particle size of nano-ZnO is 20nm, and the weight ratio of the two is 1:1.

[0022] The above nano-TiO 2 The preparation method of / nano ZnO composite lubricating oil additive, comprises the steps:

[0023] (1) Preparation of nano-ZnO: with NaOH and Zn(NO 3 ) 2 In order to react the former yield body, a ZnO powder with a size of 40nm was prepared;

[0024] (2) Nano-TiO 2 Preparation: metal titanium is placed in a tungsten boat, heated and evaporated under 200Pa of He gas, the fine particles solidified from the supersaturated steam are collected on the liquid nitrogen cooling jacket, and then 5000Pa of pure oxygen is injected into the reaction chamber, Make titanium particles rapidly and completely oxidize TiO 2 into powder;

[0025] (3) Oleic acid coating: the above nano-ZnO and...

Embodiment 2

[0029] A kind of nano TiO 2 / Nano ZnO composite lubricating oil additive, characterized in that the nano TiO 2 / The addition of nanometer ZnO is 1%.

[0030] The nano-TiO 2 The particle size of ZnO is 20nm, the particle size of nano-ZnO is 2040nm, and the weight ratio of the two is 1:2.

[0031] The above nano-TiO 2 The preparation method of / nano ZnO composite lubricating oil additive, comprises the steps:

[0032] (1) Preparation of nano-ZnO: with NaOH and Zn(NO 3 ) 2 In order to react the precursor, ZnO powder with a size of 80nm was prepared;

[0033] (2) Nano-TiO 2 The preparation of metal titanium is placed in a tungsten boat, heated and evaporated under 1000Pa of He gas, and the fine particles solidified from the supersaturated steam are collected on the liquid nitrogen cooling jacket, and then 5000Pa of pure oxygen is injected into the reaction chamber. Make titanium particles rapidly and completely oxidize TiO 2 into powder;

[0034] (3) Oleic acid coating: t...

Embodiment 3

[0037] A kind of nano TiO 2 / Nano ZnO composite lubricating oil additive, characterized in that the nano TiO 2 / The addition of nanometer ZnO is 0.1%.

[0038] The nano-TiO 2 The particle size of ZnO is 15nm, the particle size of nano-ZnO is 30nm, and the weight ratio of the two is 2:1.

[0039] The above nano-TiO 2 The preparation method of / nano ZnO composite lubricating oil additive, comprises the steps:

[0040] (1) Preparation of nano-ZnO: with NaOH and Zn(NO 3 ) 2 In order to react the former yield body, a ZnO powder with a size of 60nm was prepared;

[0041] (2) Nano-TiO 2The preparation of metal titanium is placed in a tungsten boat, heated and evaporated under 600Pa of He gas, and the fine particles solidified from the supersaturated steam are collected on the liquid nitrogen cooling jacket, and then 5000Pa of pure oxygen is injected into the reaction chamber. Make titanium particles rapidly and completely oxidize TiO 2 into powder;

[0042] (3) Oleic acid c...

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Abstract

The invention discloses a nano TiO2 / nano ZnO compounded lubricating oil additive and a preparation method thereof. The addition amount of the nano TiO2 / nano ZnO is 0.02-1%, the particle size of the nano TiO2 is 10-20nm, the particle size of the nano ZnO is 20-40nm, and the weight ratio of the nano TiO2 to the nano ZnO is 1:1, 1:2 or 2:1. The nano TiO2 / nano ZnO compound is coated with oleic acid in the preparation process to enhance the stability and form a barrier between the surface and ambient medium, thereby lowering the chemical activity of the nano TiO2 / nano ZnO, being beneficial to enhancing the dispersity, weather resistance and chalking resistance and enhancing the continuous stability; and the prepared lubricating oil can not have the phenomenon of precipitation or separation, and can be firmly attached to the friction surface to protect the surface, thereby lowering and transferring the friction factor and prolonging the service life of the lubricating oil. The lubricating oil has the advantages of superhigh abrasion resistance, and greatly enhanced extreme pressure performance and long-time abradability.

Description

technical field [0001] The invention belongs to the technical field of lubrication, in particular to a nano-TiO 2 / Nano ZnO composite lubricating oil additive and preparation method thereof. Background technique [0002] When the engine is running or stored, the atmosphere, lubricating oil, moisture in the fuel, and acid gas generated by combustion will cause corrosion and rust to the parts, thereby increasing the damage of the friction surface. The oil film formed by the lubricating oil on the surface of the machine parts can avoid direct contact between the machine parts and water and acid gas, and prevent corrosion and rust. [0003] At the end of the compression stroke, the mixture begins to burn and cylinder pressure rises sharply. At this time, the lubricating oil in the bearing gap will ease the impact load on the piston, piston pin, connecting rod, crankshaft and other parts, so that the engine can work smoothly, and prevent direct metal contact and reduce wear. I...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M141/08C10M177/00
Inventor 钱正明
Owner 南宁飞日润滑科技股份有限公司
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