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Method for preparing composite anti-wear additive through aliphatic acid grafting

A fatty acid and additive technology, applied in additives, lubricating compositions, petroleum industry, etc., can solve problems such as affecting dispersibility, and achieve the effects of extending service life, controllable synthesis, and excellent anti-wear performance

Active Publication Date: 2017-12-19
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the high surface energy of nanoparticles, it is easy to agglomerate and affect its dispersion in oil

Method used

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  • Method for preparing composite anti-wear additive through aliphatic acid grafting
  • Method for preparing composite anti-wear additive through aliphatic acid grafting
  • Method for preparing composite anti-wear additive through aliphatic acid grafting

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Embodiment 1: a kind of method that grafted fatty acid prepares composite anti-wear additive, comprises the following steps:

[0032] Using magnesium oxide, silicon dioxide, oleic acid as raw materials

[0033] The selected mass ratio of magnesium oxide, silicon dioxide and oleic acid is: magnesium oxide 1; silicon dioxide 1; oleic acid 0.4.

[0034] Specifically: get 4.286g of magnesium oxide (MgO) and silicon dioxide (SiO2) respectively, mix it with 14ml of sodium hydroxide solution with a concentration of 1mol / L, add 400ml of deionized water, add 1.72g (0.42wt% ) of oleic acid, the resulting mixed solution was stirred at a speed of 200r / min for 10 minutes, and the power of 60W was ultrasonicated for 10 minutes; the resulting mixed solution was transferred to a reactor, and the reactor was closed.

[0035] Set the speed of the magnetic stirrer in the reaction kettle to 450r / min, set the heating time to 90min, the holding temperature to 200°C and the holding time to 1...

Embodiment 2

[0038] Embodiment 2: a kind of method that grafted fatty acid prepares composite anti-wear additive, comprises the following steps:

[0039] Using magnesium oxide, silicon dioxide, oleic acid as raw materials

[0040] The selected mass ratio of magnesium oxide, silicon dioxide and oleic acid is: magnesium oxide 1; silicon dioxide 1.2; oleic acid 0.6.

[0041] Specifically: take 4.286g of magnesium oxide (MgO) and 5.143g of silicon dioxide (SiO2) respectively, mix it with 15ml of sodium hydroxide solution with a concentration of 1mol / L, add 400ml of deionized water, add 2.57g (0.63 wt%) of oleic acid, the resulting mixed solution was stirred at a speed of 200r / min for 10 minutes, and the power of 60W was ultrasonicated for 10 minutes; the resulting mixed solution was transferred to a reactor, and the reactor was closed.

[0042] Set the speed of the magnetic stirrer in the reaction kettle to 450r / min, set the heating time to 90min, the holding temperature to 200°C and the hold...

Embodiment 3

[0045] Embodiment 3: a kind of method that grafted fatty acid prepares composite anti-wear additive, comprises the following steps:

[0046] Using magnesium oxide, silicon dioxide, linoleic acid as raw materials

[0047] The selected mass ratio of magnesium oxide, silicon dioxide and linoleic acid is: magnesium oxide 1; silicon dioxide 1; linoleic acid 0.63.

[0048] Specifically: take 4.286g of magnesium oxide (MgO) and silicon dioxide (SiO2) respectively, mix it with 15ml of sodium hydroxide solution with a concentration of 1mol / L, add 400ml of deionized water, and add 2.7g of linoleic acid , the resulting mixed solution was stirred at a rotational speed of 200r / min for 10 minutes, and ultrasonicated at a power of 60W for 10 minutes; the resulting mixed solution was transferred to a reactor, and the reactor was closed.

[0049] Set the speed of the magnetic stirrer in the reaction kettle to 450r / min, set the heating time to 90min, the holding temperature to 200°C and the hold...

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Abstract

A method for preparing a composite anti-wear additive through aliphatic acid grafting belongs to the technical field of nano-materials. The method comprises the following steps: taking magnesium oxide (MgO) and silica (SiO2) according to a certain mass ratio, mixing the magnesium oxide and silica with a sodium hydroxide solution having a predetermined concentration, adding a certain mass proportion of aliphatic acid, stirring the obtained mixed solution at a predetermined rotating rate for a certain time, and carrying out ultrasonic treatment for a certain time; transferring the obtained mixed solution into a reaction kettle, and sealing the reaction kettle; setting the rotating rate of the magnetic stirrer of the reaction kettle, and setting the heating time, the heat insulation temperature and the heat insulation time; carrying out a reaction, and naturally cooling the reaction kettle to room temperature in order to obtain a reacted mixed solution; and drying the reacted mixed solution at a certain temperature to obtain the composite anti-wear additive. The method has the advantages of simplicity, feasibility, strong operability, and realization of the synthesis of composite powder having different shapes and different particle sizes through controlling reaction conditions.

Description

technical field [0001] The invention relates to a method for preparing composite anti-wear additives by grafting fatty acid, and belongs to the technical field of nanometer materials. Background technique [0002] Since serpentine was discovered, as a lubricating oil additive, its performance in wear reduction and anti-wear has aroused great interest. However, due to its complex composition and different ore sources as a natural mineral, the prepared serpentine powder has poor uniformity and consistency. Moreover, at present, serpentine powder is mainly obtained by means of mechanical ball milling. The big limitation of this method is that it is difficult to make the powder reach the nanometer level. Magnesium hydroxysilicate is one of the main components of natural serpentine. The development of nanotechnology has made it possible to synthesize magnesium hydroxysilicate. [0003] In the prior art, the application No. 200810031525.6 discloses a method for preparing chrys...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M141/02C10M125/26C10M177/00C10N30/06C10N30/04
CPCC10M125/26C10M141/02C10M177/00C10M2201/102C10M2201/14C10M2207/126C10N2030/04C10N2030/06C10N2020/06
Inventor 常秋英高凯王斌
Owner BEIJING JIAOTONG UNIV
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