Lubricating oil containing illite/montmorillonite clay nano powder and preparation method thereof

A technology of nano-powder and smectite, applied in lubricating compositions, petroleum industry, additives, etc., can solve problems such as unsatisfactory anti-wear and anti-friction effects, and achieve environmentally friendly effects

Inactive Publication Date: 2014-02-19
SOUTH CHINA UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the unsatisfactory anti-wear and anti-friction effect of existing lubricating oils, the object of the present invention is to provide a lubricating oil containing nano-powder of Il / Mongolian clay and a preparation method thereof, wherein the lubricating oil adopts Il / Mongolian clay As an additive, nano powder has good anti-friction and wear properties, and is environmentally friendly and pollution-free

Method used

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  • Lubricating oil containing illite/montmorillonite clay nano powder and preparation method thereof
  • Lubricating oil containing illite/montmorillonite clay nano powder and preparation method thereof
  • Lubricating oil containing illite/montmorillonite clay nano powder and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0034] (1) Preparation of slurry: Mechanically crush natural I / Mongolian clay minerals into small pieces of I / Mongolian clay ore with a particle size of less than 5cm; mix 450g of I / Mongolian clay with 550g of water, and then soak for 12 hours to obtain I / Mongolian clay ore Mongolian clay slurry;

[0035] (2) Dispersion: Use 0.1mol / L NaOH solution to adjust the pH value of the Iraqi / Mongolian clay slurry to 9, add 6.75g of dispersant WF-211, and use a sand mill disperser for slurry dispersion; among them, the dispersant The addition of WF-211 is 1.5wt% of the solid content in the slurry; the speed of the sand mill disperser is 1000rpm, and the stirring time is 30min;

[0036] (3) Screening: pass the slurry dispersed in step (2) through a 500-mesh sieve to obtain the under-screen slurry;

[0037] (4) Grinding: Grinding the under-screen slurry with a high-energy-density stirring mill, in which the feeding speed of the pump is 3L / min, and the grinding medium is ZrO with a diamet...

Embodiment 2

[0042] The difference between this example and Example 1 is that the grinding time in step (4) is 3h, and the particle cumulative distribution of the prepared nano-slurry is as follows figure 1 As shown in the 3h curve, it can be seen that particles smaller than 100nm account for about 67%, and the particle size reaches the nanometer level; in step (7), take 2g of modified Il / Mongolian clay nanopowder and 198g of Group III base oil to prepare Lubricating oil containing 1.0wt% mass fraction of I / Mon clay nanopowder.

Embodiment 3

[0044] The difference between this example and Example 1 is that the grinding time in step (4) is 4 hours, and the particle cumulative distribution of the slurry is as follows figure 1As shown in the 4h curve in the middle, it can be seen that the particles smaller than 100nm account for about 70%, and the particle size reaches the nanometer level; in step (7), take 3g of the modified Iraqi / Mongolian clay nanopowder and 197g of Group III base oil to prepare Lubricating oil containing 1.5wt% mass fraction of I / Mon clay nanopowder.

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Abstract

The invention discloses a lubricating oil containing illite / montmorillonite clay nano powder and a preparation method thereof, belonging to the field of new application of phyllosilicate clay minerals. The lubricating oil is composed of oleic acid modified illite / montmorillonite clay nano powder and III type base oil, wherein the oleic acid modified illite / montmorillonite clay nano powder accounts for 0.5-2.5 wt% of the lubricating oil. The preparation method comprises the following steps: (1) crushing natural illite / montmorillonite clay minerals, and adding water to obtain a slurry; (2) regulating the pH value of the slurry, and dispersing; (3) screening the slurry through a sieve; (4) grinding the undersieve slurry to obtain a nano slurry; (5) adding oleic acid for modification; (6) drying the modified nano slurry to obtain nano dry powder; and (7) mixing the nano dry powder with III type base oil to obtain the lubricating oil containing illite / montmorillonite clay nano powder. By using the illite / montmorillonite clay nano powder as the additive, the lubricating oil has the advantages of favorable friction and wear resistance, environment friendliness and no pollution.

Description

technical field [0001] The present invention relates to a lubricating oil containing nano-powder of Il / Mongolian clay and a preparation method thereof, in particular to a method of adding modified Il / Mongolian clay as an additive to class III base oils to improve the performance of class III base oils. A lubricating oil with anti-friction and wear properties and a preparation method thereof belong to the new application field of layered silicate clay minerals. Background technique [0002] The ever-changing machines and mechanical equipment require lubricating oils to adapt to various working conditions, such as high temperature, low temperature, vacuum, high radiation, high load and corrosive media, etc., and also require a long service life and storage stability etc. Therefore, it is difficult to meet these requirements by relying on the performance of the lubricating oil itself. Lubricating oil additives are one of the main ways to solve these problems. Compared with tr...

Claims

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Application Information

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IPC IPC(8): C10M125/30C10M177/00C09C1/42C09C3/10C09C3/08C10N30/06
Inventor 王燕民高传平向龙华黄岩潘志东
Owner SOUTH CHINA UNIV OF TECH
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