Method to realize stable dispersion of nano BN powder in lubricating oil

A kind of lubricating oil, nano technology, applied in the direction of lubricating composition, petroleum industry, additives, etc., can solve the problems of unsuitable industrial application, no research on the stability of BN oil solution stability of nano BN oil solution, etc.

Inactive Publication Date: 2015-04-15
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the literature only studies how to disperse BN, and does not study the stability of BN oil solution after dispersion and how to ensure the stability of nano-BN oil solution, which is not suitable for industrial applications.

Method used

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  • Method to realize stable dispersion of nano BN powder in lubricating oil
  • Method to realize stable dispersion of nano BN powder in lubricating oil
  • Method to realize stable dispersion of nano BN powder in lubricating oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] refer to figure 2 , this embodiment includes the following steps:

[0031] In the first step, ultrasonically disperse 0.04g of nano-BN particles with an average particle size of 80nm and 0.0016g of silane coupling agent KH-550 (γ-aminopropyltriethoxysilane) in 40g of paraffin oil to make milky white nano BN oil solution, obtaining concentration is the BN dispersion oil solution of 0.1wt%;

[0032] refer to figure 1 , the nano-BN refers to hexagonal boron nitride, which has a hexagonal layered structure,

[0033] The ultrasonic dispersion refers to: working frequency 40kHz; ultrasonic power 100W; ultrasonic time 30min;

[0034] In the second step, a constant temperature water bath is used to heat the reaction and fully stirred to obtain surface-modified nano-BN particles after the reaction is completed;

[0035] The water bath heating reaction, full stirring is: using magnetic stirring, the frequency is 50Hz, the set temperature is 80°C, and the stirring time is 30m...

Embodiment 2

[0039] This embodiment includes the following steps:

[0040]In the first step, 0.04g of nano-BN particles with an average particle size of 80nm, 0.0008g of silane coupling agent KH-550 (γ-aminopropyltriethoxysilane) and 0.0008g of KH-560 silane coupling agent were ultrasonically dispersed in 10g 32# machine oil, 30g white oil, make milky white nano BN oil solution;

[0041] The ultrasonic dispersion is: working frequency 40kHz; ultrasonic power 100W; ultrasonic time 40min;

[0042] In the second step, a constant temperature water bath is used to heat the reaction and fully stirred to obtain surface-modified nano-BN particles after the reaction is completed;

[0043] The water bath heating reaction, full stirring is: using magnetic stirring, the frequency is 50Hz, the set temperature is 80°C, and the stirring time is 20min;

[0044] In the third step, 1.2 g of stabilizer polyisobutylene succinimide T154 is added to the nano-BN oil solution, and fully ultrasonically oscillate...

Embodiment 3

[0047] This embodiment includes the following steps:

[0048] In the first step, ultrasonically disperse 0.04g of nano-BN particles with an average particle size of 80nm and 0.0016g of silane coupling agent KH-550 (γ-aminopropyltriethoxysilane) in 40g of paraffin oil to make milky white nano BN oil solution, obtaining concentration is the BN dispersion oil solution of 0.1wt%;

[0049] The ultrasonic dispersion is: working frequency 40kHz; ultrasonic power 100W; ultrasonic time 30min;

[0050] In the second step, a constant temperature water bath is used to heat the reaction and fully stirred to obtain surface-modified nano-BN particles after the reaction is completed;

[0051] The water bath heating reaction, full stirring is: using magnetic stirring, the frequency is 50Hz, the set temperature is 80°C, and the stirring time is 30min;

[0052] In the third step, the stabilizer polyisobutylene succinimide T154, which accounts for 2wt%, 5wt%, and 15wt% of the nano-BN content, i...

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Abstract

A method to realize stable dispersion of nano BN in the lubricating oil. The method is as below: first adding BN nanoparticles and a silane coupling agent in the lubricating oil, fully shocking and dispersing by using ultrasonic and heating in a water bath for reaction; adding Isobutylene polyisobutylene succimide (T154) to the solution, fully shocking and dispersing by using ultrasonic, so as to obtain a nano boron nitride oil solution with long time stable dispersion after the reaction. The invention realizes the rapid preparation of the nano BN oil solutionby using silane coupling agent as a dispersant and T154 as a stabilizer, prepares nano BN oil solution with good dispersion and stability, and lays the foundation for industrial application of BN nanoparticles as a lubricating oil additive.

Description

technical field [0001] The invention relates to a preparation method of a nanometer material as a lubricating oil additive, in particular to a method for realizing stable dispersion of nanometer BN in lubricating oil. Background technique [0002] With the development of mechanical equipment, a single liquid lubricant cannot meet the requirements of the harsh operating environment of the mechanical system, such as ultra-high / low temperature, ultra-high vacuum, radiation, extreme pressure, ultra-high / low speed, etc. Due to the negative impact of additives such as S and P on the environment, governments of various countries have introduced strict emission policies in recent years, limiting the use of traditional lubricant additives. [0003] Solid lubricant superfine powder has been widely used in lubricating grease, which has good anti-friction and anti-wear effects. For example, MoS 2 , graphite, hexagonal boron nitride, boric acid and PTFE mixed with grease can significan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M161/00C10M125/26C10N30/06
Inventor 董光能吴红星董国忠
Owner XI AN JIAOTONG UNIV
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