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Method for preparing tungsten disulfide nanosheet water-based lubricating agent in situ

A technology of water-based lubricants and tungsten disulfide, which is applied in the direction of lubricating compositions, additives, petroleum industry, etc., can solve problems such as limiting the scope of application, and achieve the effect of simple process and method

Inactive Publication Date: 2015-05-06
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as a water-based lubricating additive, tungsten disulfide is difficult to disperse stably in water, thus limiting its application range

Method used

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  • Method for preparing tungsten disulfide nanosheet water-based lubricating agent in situ
  • Method for preparing tungsten disulfide nanosheet water-based lubricating agent in situ
  • Method for preparing tungsten disulfide nanosheet water-based lubricating agent in situ

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042]Step 1: Weigh 0.3g of surface modifier Triton X-100, add 300mL of deionized water, and vigorously stir for 12 hours to fully dissolve the surface modifier in water to obtain a solution for preparing a water-based lubricant (Triton X-100 -100 mass ratio is 0.1%);

[0043] Step 2: Weigh 1.5g of tungsten disulfide powder (with a particle size of less than 325 mesh) and add it to the prepared solution, stir until it is uniformly dispersed to obtain a tungsten disulfide dispersion (0.5% by mass of tungsten disulfide), and pack it into into a conical flask with a lid;

[0044] Step 3: Dip the Erlenmeyer flask containing the tungsten disulfide dispersion in the container of the ultrasonic cavitation generating device (filled with water in advance), and perform ultrasonic cavitation treatment for 8 hours, during which time the container is kept in the container by means of circulating cooling. The water temperature is lower than 40°C; the power of the ultrasonic cavitation gene...

Embodiment 2

[0049] Step 1: Weigh 0.3g of surface modifier Triton X-100, add 300mL of deionized water, and vigorously stir for 12 hours to fully dissolve the surface modifier in water to obtain a solution for preparing a water-based lubricant (Triton X-100 -100 mass ratio is 0.1%);

[0050] Step 2: Weigh 3g of tungsten disulfide powder (particle size less than 325 mesh) and add it to the prepared solution, stir until it is evenly dispersed to obtain a tungsten disulfide dispersion (mass ratio of tungsten disulfide 1%), and put it into In a Erlenmeyer flask with a lid;

[0051] Step 3: Dip the Erlenmeyer flask containing the tungsten disulfide dispersion in the container of the ultrasonic cavitation generating device (filled with water in advance), and perform ultrasonic cavitation treatment for 8 hours, during which time the container is kept in the container by means of circulating cooling. The water temperature is lower than 40°C; the power of the ultrasonic cavitation generator is 120W...

Embodiment 3

[0056] Step 1: Weigh 0.3g of surface modifier Triton X-100, add 300mL of deionized water, and vigorously stir for 12 hours to fully dissolve the surface modifier in water to obtain a solution for preparing a water-based lubricant (Triton X-100 -100 mass ratio is 0.1%);

[0057] Step 2: Weigh 6g of tungsten disulfide powder (particle size less than 325 mesh) and add it to the prepared solution, stir until it is evenly dispersed to obtain a tungsten disulfide dispersion (tungsten disulfide mass ratio 2%), and put it into In a Erlenmeyer flask with a lid;

[0058] Step 3: Dip the Erlenmeyer flask containing the tungsten disulfide dispersion in the container of the ultrasonic cavitation generating device (filled with water in advance), and perform ultrasonic cavitation treatment for 8 hours, during which time the container is kept in the container by means of circulating cooling. The water temperature is lower than 40°C; the power of the ultrasonic cavitation generator is 120W, a...

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Abstract

The invention discloses a method for preparing a tungsten disulfide nanosheet water-based lubricating agent in situ. The method comprises the following six steps: 1, dissolving a surfactant in deionized water according to a ratio, thereby obtaining a liquid; 2, uniformly dispersing tungsten disulfide powder in the liquid; 3, performing ultrasonic cavitation treatment on the tungsten disulfide dispersion liquid; 4, standing the liquid for a certain time, and taking the upper liquid; 5, performing centrifugal separation on the obtained liquid; and 6, collecting the supernatant of the centrifuged liquid, thereby obtaining the water-based lubricating agent containing tungsten disulfide nanosheets prepared in situ. The method disclosed by the invention is simple in feasible, and the dispersion stability of the tungsten disulfide nanosheets is high. The friction test result proves that according to the extremely small addition amount (0.001-1 percent) of the tungsten disulfide nanosheets, the anti-wear and friction reduction properties of the lubricating agent can be greatly improved, and excellent characteristics such as good inherent cooling property and high machinability of the water-based lubricating agent are not influenced.

Description

Technical field: [0001] The invention relates to a method for preparing a tungsten disulfide nanosheet water-based lubricant in situ, in particular to a technology for preparing a tungsten disulfide nanosheet in situ in an aqueous surface modifier solution and using it as a lubricant. The invention belongs to the new application technical field of two-dimensional nanomaterials as water-based lubricating additives. Background technique: [0002] In the field of metal material processing industry, in order to improve efficiency and processing accuracy, improve product quality, reduce wear and friction, appropriate lubricants should be selected, which are specifically divided into two types: oil-based and water-based. Compared with the two, water-based lubricants are widely used because of their good cooling performance, suitable for high-speed processing conditions, good surface finish, and good environmental compatibility. But at the same time, due to its own poor lubricity ...

Claims

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Application Information

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IPC IPC(8): C10M173/02C10M125/22C10N30/06
Inventor 沈志刚梁帅帅张晓静麻树林
Owner BEIHANG UNIV
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