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Iron-loaded graphene-based tungsten disulfide nano lubricant additive and preparation method thereof

A technology of alkenyl tungsten disulfide and lubricants, which is applied in the direction of additives, lubricating compositions, petroleum industry, etc., can solve the problems of poor anti-wear performance and harsh preparation methods, and achieve improved extreme pressure wear resistance, less pollution, Effect of improving dispersibility and stability

Active Publication Date: 2021-08-03
苏州艾古新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The technical problem to be solved by the present invention is: in order to solve the problems of existing graphene-based nano-tungsten disulfide lubricant additives such as poor dispersion stability, heat dissipation, anti-wear performance and harsh preparation methods, thereby providing a loaded iron Graphene-based tungsten disulfide nano lubricant additive and preparation method thereof

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  • Iron-loaded graphene-based tungsten disulfide nano lubricant additive and preparation method thereof

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Embodiment 1

[0032] The present embodiment provides a preparation method of a graphene-based tungsten disulfide nano-lubricant additive loaded with iron, comprising the steps of:

[0033] S1: Dissolve sodium tungstate and thioacetamide in deionized water respectively to form an aqueous solution of sodium tungstate with a tungsten concentration of 40g / L and an aqueous solution of thioacetamide with a sulfur concentration of 32g / L, and then add 0.1L tungstic acid Sodium aqueous solution and 0.1L thioacetamide aqueous solution are mixed, and the mixed solution is adjusted to a pH value of 1 with hydrochloric acid aqueous solution;

[0034] S2: adding 0.8 g of graphene oxide to the solution in step S1, and ultrasonically treating it for 30 min at a frequency of 20 kHz and a power of 200 W to obtain a first suspension;

[0035] S3: Transfer the first suspension obtained in step S2 to a 100mL polytetrafluoroethylene autoclave, and move the autoclave to a heating box, and react for 36 hours at a ...

Embodiment 2

[0041] The present embodiment provides a preparation method of a graphene-based tungsten disulfide nano-lubricant additive loaded with iron, comprising the steps of:

[0042] S1: Dissolve sodium tungstate and thioacetamide in deionized water respectively to form an aqueous solution of sodium tungstate with a tungsten concentration of 36g / L and an aqueous solution of thioacetamide with a sulfur concentration of 30g / L, and then add 0.2L tungstic acid Sodium aqueous solution and 0.2L thioacetamide aqueous solution were mixed, and the mixed solution was adjusted to a pH value of 1 with aqueous hydrochloric acid;

[0043]S2: adding 0.7 g of graphene oxide graphene oxide into the solution in step S1, and ultrasonically treating it for 30 min under the conditions of a frequency of 20 kHz and a power of 200 W, to obtain a first suspension;

[0044] S3: Transfer the first suspension obtained in step S2 to a 100mL polytetrafluoroethylene autoclave, and move the autoclave to a heating bo...

Embodiment 3

[0050] The present embodiment provides a preparation method of a graphene-based tungsten disulfide nano-lubricant additive loaded with iron, comprising the steps of:

[0051] S1: Add ammonium tungstate and sodium sulfide to deionized water to fully dissolve respectively to form an aqueous ammonium tungstate solution with a tungsten concentration of 54g / L and an aqueous solution of sodium sulfide with a sulfur concentration of 30g / L, then add 0.12L ammonium tungstate solution and 0.24 L sodium sulfide aqueous solution is mixed, and mixed solution is adjusted to pH value 2 with nitric acid aqueous solution;

[0052] S2: adding 1.2 g of graphene oxide to the solution in step S1, and ultrasonically treating it for 20 min at a frequency of 20 kHz and a power of 200 W to obtain a first suspension;

[0053] S3: Transfer the first suspension obtained in step S2 to a 100mL polytetrafluoroethylene autoclave, and move the autoclave to a heating box, and react at a temperature of 170°C an...

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Abstract

The invention relates to an iron-loaded graphene-based tungsten disulfide nano lubricant additive and a preparation method thereof. The preparation method comprises the following steps of adding a tungsten source and a sulfur source into water to be dissolved, then mixing a tungsten source aqueous solution and a sulfur source aqueous solution according to a certain proportion, and adjusting the mixed solution to be acidic, adding graphene oxide into the solution, carrying out ultrasonic treatment, and reacting under the conditions that the temperature is 170-200 DEG C and the pressure is 2-4 MPa, cooling the reaction liquid, and then centrifugally washing and freeze-drying to obtain the graphene oxide-based tungsten disulfide composite nanomaterial, adding the graphene oxide-based tungsten disulfide composite nanomaterial into a soluble ferric salt solution, carrying out ultrasonic treatment, heating to 80-100 DEG C, adding a strong alkali solution under a stirring condition to adjust the mixed solution to be neutral or alkaline, and carrying out a reflux reaction, after the reaction liquid is cooled, centrifugal washing and drying, finally, heating a dried product to 300-400 DEG C under the protection of nitrogen for calcination, and preparing the iron-loaded graphene-based tungsten disulfide nano lubricant additive.

Description

technical field [0001] The application belongs to the technical field of lubricating oil additives, and in particular relates to an iron-loaded graphene-based tungsten disulfide nano-lubricant additive and a preparation method thereof. Background technique [0002] Bearings and other components that need to use lubricants inevitably wear out during use. How to use lubricants to reduce wear and improve the service life of components is an urgent problem to be solved. A very small amount of additives in lubricants can improve their performance in various aspects such as water spray resistance, oxidation stability, extreme pressure and anti-wear properties, which is a key link in the upgrading of lubricant technology. [0003] As a typical two-dimensional transition metal sulfide, tungsten disulfide (WS2) has a "sandwich" layered structure, and there is a weak van der Waals force between its layers, so it has good self-lubricating properties. Inside the tungsten single-layer s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M125/00C10N30/06C10N30/08C10N30/10C10N40/02
CPCC10M125/00C10M2201/041C10M2201/065C10M2201/06
Inventor 樊星颜扬扬莫文龙姚婷
Owner 苏州艾古新材料有限公司
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