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Method for dispersing nanoparticles, nanoparticle with core-shell structure and preparation method thereof, and lubricating oil

A nanoparticle, core-shell structure technology, applied in the field of lubricating oil, can solve the problems of limiting the application of core-shell structure nanomaterials, high cost, difficult preparation of core-shell structure nanomaterials, etc.

Active Publication Date: 2019-12-13
SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation of core-shell nanomaterials with an amorphous shell is difficult and expensive, and the latter is difficult to disperse uniformly in liquid media. These technical problems limit the application of core-shell nanomaterials.
[0003] Therefore, the current amorphous core-shell nanomaterials still need to be improved

Method used

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  • Method for dispersing nanoparticles, nanoparticle with core-shell structure and preparation method thereof, and lubricating oil
  • Method for dispersing nanoparticles, nanoparticle with core-shell structure and preparation method thereof, and lubricating oil
  • Method for dispersing nanoparticles, nanoparticle with core-shell structure and preparation method thereof, and lubricating oil

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Experimental program
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Effect test

Embodiment 1

[0050] Embodiment 1: the synthesis of molybdenum trisulfide

[0051] First, 0.1mol sodium molybdate Na 2 MoO 4 and 0.6mol thioacetamide CH 3 CSNH 2 Dissolve in a mixture of 80ml of distilled water and ethanol, and reflux the obtained reaction solution at 65°C. After all the reagents are dissolved in the solution, quickly add 0.4mol hydrochloric acid into the reaction system to obtain a large amount of brown precipitate. The brown precipitate was washed several times with distilled water and ethanol, respectively, to obtain the final amorphous molybdenum trisulfide nanoparticle product, and the obtained amorphous molybdenum trisulfide (MoS 3 ) TEM photo and XRD spectrum are shown in figure 1 and figure 2 .

Embodiment 2

[0052] Example 2: Zero-dimensional core-shell structure TiO 2 @MoS 3 Preparation of nanoparticles

[0053] 4.0g of the MoS prepared in Example 1 3 and 4.0g TiO 2 (particle size is about 25nm) mixed, and use mortar and pestle to grind the resulting mixture to form a fine powder, to obtain a light beige powder, namely TiO 2 @MoS 3 nanoparticles. Grinding time is at least half an hour, initial TiO 2 and TiO 2 @MoS 3 The XRD spectrum is shown in figure 2 , to get TiO 2 @MoS 3 For the TEM photo see image 3 .

Embodiment 3

[0054] Embodiment 3: the synthesis of two-dimensional α-zirconium phosphate

[0055] 8.0g ZrOCl 2 .8H 2 O and 80.0mL 3.0mol / L H 3 PO 4 (85%wt) The white microemulsion obtained by mixing the aqueous solution was refluxed at 100°C for 24 hours. After the reaction was completed, it was centrifuged and washed five times to collect the final product ZrP, and then the ZrP was dried at 65°C for 24h and the dried ZrP was ground. For fine powder. The TEM photo and XRD spectrum of ZrP are shown in Figure 4 and Figure 5 .

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Abstract

A method for dispersing nanoparticles, a core-shell-structured nanoparticle, a preparation method therefor, and lubricant oil having core-shell-structured nanoparticles. The method for dispersing nanoparticles comprises: forming shells on the outer surfaces of the nanoparticles, the shells being formed of amorphous molybdenum sulfide; and dispersing the nanoparticles, on which the shells are formed, in a liquid medium.

Description

technical field [0001] The invention relates to the technical field of materials and lubrication, in particular to a method for dispersing nanoparticles, a nanoparticle with a core-shell structure, a preparation method thereof, and a lubricating oil. Background technique [0002] Core-shell nanoparticles are composed of two or more materials. In a broad sense, core-shell nanoparticles include a core (inner core material) and a shell (outer layer material), which can include various combinations, such as inorganic / Inorganic, inorganic / organic, organic / inorganic and organic / organic materials. Amorphous core-shell nanomaterials are an important class of soft matter materials that can be used in many fields, such as catalysts and additives. Typical amorphous shells are formed from organic materials such as polymers or mesoporous inorganic oxides such as mesoporous silica. However, the preparation of core-shell nanomaterials with an amorphous shell is difficult and expensive, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M125/22C10M125/24C10N30/06
CPCC10M125/22C10M125/24C10M2201/066C10N2030/06C10N2020/06C10N2020/061
Inventor 孙大陟雍怀松
Owner SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA