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Antirust composite additive for lubricating oil and preparation method

A compound additive and lubricating oil technology, which is applied in the direction of additives, lubricating compositions, petroleum industry, etc., can solve problems such as shedding, hardening, and affecting the anti-rust effect of lubricating oil, and achieve good friction reduction and long-term corrosion protection.

Inactive Publication Date: 2020-11-17
CHENDU NEW KELI CHEM SCI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] According to the above, the anti-rust additives used in lubricating oils in the existing schemes mainly achieve the purpose of anti-rust and anti-corrosion by forming an adsorption film. Therefore, the lubricating oil added with anti-rust additives forms a stable oil film and a stable thickness. It is very important, but due to the change of the lubricating oil with the environment, the adsorption firmness of the anti-rust film and the machine parts, the stability of the anti-rust film are easily destroyed, and it is easy to harden and fall off, which affects the anti-rust effect of the lubricating oil. A lubricating oil anti-rust compound additive and its preparation method are proposed, which can effectively solve the above technical problems

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Add polyether carboxylic acid derivatives to the lye and disperse evenly, then add magnesium aluminum hydrotalcite, heat and mechanically stir, then perform aging treatment, filter under reduced pressure, and finally wash with distilled water until the neutral pH value is 7 , to obtain intercalated hydrotalcite of polyether carboxylic acid derivatives; the alkali solution is a sodium hydroxide aqueous solution with a concentration of 0.9mol / L; the temperature of heating and mechanical stirring is 76°C, the rotation speed is 380r / min, and the time is 3h; the aging treatment The temperature is room temperature, and the time is 14h;

[0031] The ratio of each raw material is, in parts by weight, 2 parts by weight of polyether carboxylic acid derivative, 28 parts by weight of lye, and 10 parts by weight of magnesium aluminum hydrotalcite;

[0032] (2) Add the polyether carboxylic acid derivative intercalated hydrotalcite obtained in step (1) into 4,4'-diaminodiphenyl et...

Embodiment 2

[0038] (1) Add polyether carboxylic acid derivatives to the lye and disperse evenly, then add magnesium aluminum hydrotalcite, heat and mechanically stir, then perform aging treatment, filter under reduced pressure, and finally wash with distilled water until the neutral pH value is 7 , to obtain intercalated hydrotalcite of polyether carboxylic acid derivatives; the lye is an aqueous solution of sodium hydroxide with a concentration of 0.6mol / L; the temperature of heating and mechanical stirring is 72°C, the rotation speed is 350r / min, and the time is 4h; The temperature is room temperature, and the time is 11h;

[0039] The ratio of each raw material is, in parts by weight, 2 parts by weight of polyether carboxylic acid derivative, 35 parts by weight of lye, and 12 parts by weight of magnesium aluminum hydrotalcite;

[0040] (2) Add the polyether carboxylic acid derivative intercalated hydrotalcite obtained in step (1) into 4,4'-diaminodiphenyl ether, disperse evenly, and th...

Embodiment 3

[0046] (1) Add polyether carboxylic acid derivatives to the lye and disperse evenly, then add magnesium aluminum hydrotalcite, heat and mechanically stir, then perform aging treatment, filter under reduced pressure, and finally wash with distilled water until the neutral pH value is 7 , to obtain intercalated hydrotalcite of polyether carboxylic acid derivatives; the alkali solution is an aqueous solution of sodium hydroxide with a concentration of 1.2mol / L; the temperature of heating and mechanical stirring is 78°C, the rotation speed is 450r / min, and the time is 3h; the aging treatment The temperature is room temperature, and the time is 14h;

[0047] The ratio of each raw material is, by weight, 4 parts by weight of polyether carboxylic acid derivative, 25 parts by weight of lye, and 5 parts by weight of magnesium aluminum hydrotalcite;

[0048] (2) Add the polyether carboxylic acid derivative intercalated hydrotalcite obtained in step (1) into 4,4'-diaminodiphenyl ether, d...

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Abstract

The invention relates to the field of lubricating oil additives, and discloses an antirust composite additive for lubricating oil and a preparation method thereof. The preparation method comprises thefollowing steps: (1) adding a polyether carboxylic acid derivative and magnesium-aluminum hydrotalcite into alkali liquor, and carrying out heating, stirring, ageing, filtering and washing to obtainpolyether carboxylic acid derivative intercalated hydrotalcite; (2) adding the polyether carboxylic acid derivative intercalated hydrotalcite, 2,4-toluene diisocynate and an amine chain extender into4,4'-diaminodiphenyl ether, and carrying out heating and kneading to obtain a polyurea dispersion material; and (3) uniformly grinding and dispersing the polyurea dispersion material, barium alkyl benzene sulfonate, calcium alkyl benzene sulfonate, ammonium borate, zinc dialkyl dithiophosphate, nanometer polytetrafluoroethylene and base oil 150BS to obtain the antirust composite additive for lubricating oil . The polyether carboxylic acid derivative intercalated hydrotalcite is dispersed in a polyurea system to prepare the antirust composite additive, so when being used for lubricating oil, the antirust composite additive has better antifriction and antiwear properties and can form a stable antirust protective film to realize long-term rust prevention.

Description

technical field [0001] The invention relates to the field of lubricating oil additives, and discloses a lubricating oil antirust composite additive and a preparation method thereof. Background technique [0002] With the development and application of the machinery industry, people pay more and more attention to the safe and efficient operation of machinery and equipment. In the operation of machinery, friction and wear, as a ubiquitous natural phenomenon, are also the main cause of equipment damage. How to effectively reduce friction and wear during the operation of mechanical equipment has become an important research topic. Among them, lubricating oil, as the most effective technical means to reduce friction and wear, plays an important role in high-performance machinery. With the development of the lubricating oil industry, the performance of the base lubricating oil has reached the technical bottleneck. In order to further improve the anti-wear performance, friction re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M149/20C10M125/26C10M169/04C10M177/00C10N30/12C10N30/06
CPCC10M125/26C10M149/20C10M169/048C10M177/00C10M2201/087C10M2201/102C10M2203/1025C10M2213/062C10M2217/045C10M2219/044C10M2223/045
Inventor 曾军堂陈庆司文彬李钧
Owner CHENDU NEW KELI CHEM SCI CO LTD
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