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Preparation method of lubricating oil anti-wear additive

An additive and lubricating oil technology, applied in the directions of additives, lubricating compositions, petroleum industry, etc., can solve the problems of lubricating oil dispersion defects, parts wear, instability, etc., to improve anti-wear and extreme pressure performance, reduce mechanical wear and reduce friction

Active Publication Date: 2018-04-13
洛斯石油(浙江)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] With the continuous development of anti-wear additives, a metal nano-anti-wear additive containing nano-metal compound components has been produced in recent years. This anti-wear additive not only has good performance in terms of anti-wear properties, but also overcomes environmental impact However, it has two deficiencies: one is that the nano-solution belongs to the suspension technology, and after being configured into a liquid, it is still an unstable liquid, and there will be a layering effect if it is placed for a long time, and its dispersibility is not high when it is added to lubricating oil. There are relatively large defects, so the technology needs to be further improved; the second is nano-metal powder, nano-ceramic powder, on the surface of machine parts and engine moving parts, long-term use will produce nano-particle aggregation. This nano-aggregation effect lasts for a long time. The more it accumulates, the larger particles will be deposited, which will cause new wear and tear on the machine parts.

Method used

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  • Preparation method of lubricating oil anti-wear additive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A preparation method of lubricating oil anti-wear additive:

[0028] (1) 78g Mg(NO 3 ) 2 with 22g Al(NO 3 ) 3 Mix well in the aqueous solution, then add 22g of sodium hydroxide, adjust the pH of the solution to 10.5, crystallize at 100°C for 8h, and wash the product to neutrality by centrifugation to obtain the interlayer anion as NO 3- , the laminate divalent and trivalent cations are Mg 2+ / Al 3+ Hydrotalcite precursor;

[0029] (2) React 20g of aluminum chloride and 7g of ethylamine in water until the precipitate disappears completely, then add 6g of sodium silicate, and mix well to obtain the mixed system 1;

[0030] (3) Add hydrotalcite precursor and 12g of expanded graphite to the mixed system 1, react at 90°C for 5h, then add 3g of hydrochloric acid to adjust the pH of the system to 4, and obtain the pre-product;

[0031] (4) calcining the pre-product at 300° C. for 2 hours in a nitrogen atmosphere to obtain the lubricating oil anti-wear additive;

[0032...

Embodiment 2

[0036] A preparation method of lubricating oil anti-wear additive:

[0037] (1) 70g Zn(NO 3 ) 2 with 15g Fe(NO 3 ) 3 Mix well in the aqueous solution, then add 15g of sodium hydroxide, adjust the pH of the solution to 10.2, crystallize at 70°C for 9 hours, and wash the product to neutrality by centrifugation to obtain the interlayer anion as NO 3- , the laminate divalent and trivalent cations are Zn 2+ / Fe 3+ Hydrotalcite precursor;

[0038] (2) React 15g of aluminum sulfate and 5g of n-butylamine in water until the precipitate disappears completely, then add 1.5g of sodium silicate, and mix well to obtain the mixed system 1;

[0039] (3) Add a hydrotalcite precursor and 5 g of expanded graphite to the mixed system 1, react at 70 ° C for 7 h, then add 1 g of nitric acid to adjust the pH of the system to 3, and obtain a pre-product;

[0040] (4) Calcining the pre-product at 280° C. for 3 hours in a nitrogen atmosphere to obtain the lubricating oil anti-wear additive;

...

Embodiment 3

[0045] A preparation method of lubricating oil anti-wear additive:

[0046] (1) 85g Cu(NO 3 ) 2 with 30g Fe(NO 3 ) 3 Mix well in the aqueous solution, then add 30g of sodium hydroxide, adjust the pH of the solution to 10.6, crystallize at 110°C for 5h, and wash the product to neutrality by centrifugation to obtain the interlayer anion as NO 3- , the laminate divalent and trivalent cations are Cu 2+ / Fe 3+ Hydrotalcite precursor;

[0047] (2) React 25g of aluminum nitrate and 10g of n-hexylamine in water until the precipitate disappears completely, then add 10g of sodium silicate, and mix well to obtain the mixed system 1;

[0048] (3) Add a hydrotalcite precursor and 20 g of expanded graphite to the mixed system 1, react at 110° C. for 4 h, then add 5 g of sulfuric acid to adjust the pH of the system to 4 to obtain a pre-product;

[0049] (4) calcining the pre-product at 380° C. for 2 hours in a nitrogen atmosphere to obtain the lubricating oil anti-wear additive;

[0...

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Abstract

The invention relates to the technical field of lubricating oil wear resistance, and concretely relates to a preparation method of a lubricating oil anti-wear additive. The method comprises the following steps: 1, preparing a hydrotalcite precursor; (2) reacting an aluminum source with fatty amine in water until precipitate disappears completely, adding water-soluble silicate, and uniformly mixingthe obtained solution to obtain a mixed system 1; (3) adding the hydrotalcite precursor and expanded graphite to the mixed system 1, carrying out a reaction at 60-120 DEG C for 3-8 h, and adding an acidic substance to adjust the pH value of the system to 3-5 in order to obtain a pre-product; and (4) calcining the pre-product in an inert gas to obtain the lubricating oil anti-wear additive. Nano-particles are added to the hydrotalcite precursor and the expanded graphite to make wear-resistant nano-particles enter layered hydrotalcite-like interlayer and expanded graphite interlayer, so the wear-resistant particles are evenly dispersed in the system and are well fused into lubricating oil, thereby the anti-wear and anti-extreme pressure performances of the lubricating oil are effectively improved.

Description

technical field [0001] The invention relates to the technical field of lubricating oil anti-wear, in particular to a preparation method of lubricating oil anti-wear additives. Background technique [0002] The main components of lubricating oil include lubricating base oil and various organic or inorganic, liquid or solid lubricating oil additives. They are compounded into corresponding lubricating oil according to a certain ratio. Lubricating base oils are mainly divided into three categories: mineral base oils, synthetic base oils and vegetable oil base oils. With the development of technology, more and more equipment components will work under more severe working conditions. Therefore, synthetic lubricating oil has become a lot of The base oil composition of lubricating oil that must be used under special working conditions. [0003] One of the main functions of lubricating oil is anti-wear effect, so anti-wear additive is one of the most important components in lubrica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M125/26C10N30/06
CPCC10M125/26C10M2201/041C10M2201/062C10M2201/08C10M2201/082C10M2201/086C10M2201/105C10N2030/06C10N2020/06
Inventor 汪涛
Owner 洛斯石油(浙江)有限公司
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