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In-situ preparation method of water-based lubricant containing molybdenum disulfide nanosheet

A technology of water-based lubricants and molybdenum disulfide, which is applied in the direction of lubricating compositions, additives, petroleum industry, etc., can solve the problems of unstable dispersion and limited use, and achieve the effect of simple process and method

Inactive Publication Date: 2015-04-29
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, molybdenum disulfide is insoluble in water, so that it cannot be dispersed stably in water, thus limiting its use in water-based lubricants

Method used

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  • In-situ preparation method of water-based lubricant containing molybdenum disulfide nanosheet
  • In-situ preparation method of water-based lubricant containing molybdenum disulfide nanosheet
  • In-situ preparation method of water-based lubricant containing molybdenum disulfide nanosheet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

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

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

[0044] Step 3: Dip the Erlenmeyer flask containing the molybdenum disulfide dispersion in the container of the ultrasonic cavitation generating device (filled with water in advance), perform ultrasonic cavitation treatment for 8 hours, and keep the container in the container by means of circulating cooling during this period. The water temperature is lower than 40°C; the power of the ultrasonic cavitation generator is 120W, a...

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 molybdenum disulfide powder (particle size less than 325 mesh) and add it to the prepared solution, stir until it is evenly dispersed to obtain a molybdenum disulfide dispersion (molybdenum disulfide mass ratio 1%), and put it into In a Erlenmeyer flask with a lid;

[0051] Step 3: Dip the Erlenmeyer flask containing the molybdenum disulfide dispersion in the container of the ultrasonic cavitation generating device (filled with water in advance), perform ultrasonic cavitation treatment for 8 hours, and keep the container in the container by means of circulating cooling during this period. The water temperature is lower than 40°C; the power of the ultrasonic cavitation generator is 1...

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 molybdenum disulfide powder (particle size less than 325 mesh) and add it to the prepared solution, stir until it is evenly dispersed to obtain a molybdenum disulfide dispersion (molybdenum disulfide mass ratio 2%), and put it into In a Erlenmeyer flask with a lid;

[0058] Step 3: Dip the Erlenmeyer flask containing the molybdenum disulfide dispersion in the container of the ultrasonic cavitation generating device (filled with water in advance), perform ultrasonic cavitation treatment for 8 hours, and keep the container in the container by means of circulating cooling during this period. The water temperature is lower than 40°C; the power of the ultrasonic cavitation generator is 1...

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Abstract

An in-situ preparation method of a water-based lubricant containing a molybdenum disulfide nanosheet comprises six steps as follows: (1), a surface active agent is dissolved in deionized water in a proportion to obtain a solution; (2), molybdenum disulfide powder is uniformly dispersed into the solution; (3), a molybdenum disulfide dispersion liquid is subjected to ultrasonic cavitation processing; (4), the solution is left to stand for a certain period of time, and a supernatant liquid of the solution is taken; (5), the obtained solution is subjected to centrifugal separation processing; (6) the supernatant liquid of the centrifugal solution is collected, and the water-based lubricant containing the in-situ prepared molybdenum disulfide nanosheet is obtained. The method is easy, convenient and feasible, and the dispersion stability of the molybdenum disulfide nanosheet is good. A friction experiment result indicates that the wear-resistant and anti-friction performance of the lubricant can be greatly improved by adding a small quantity of the molybdenum disulfide nanosheet on the premise that the original excellent characteristics of good cooling performance and processability and the like of the water-based lubricant are not influenced, and the addition quantity of the molybdenum disulfide nanosheet ranges from 0.001% to 1%.

Description

Technical field: [0001] The invention relates to a method for preparing molybdenum disulfide nano-sheet water-based lubricant in situ, in particular to a technology for preparing molybdenum disulfide nano-sheet in an aqueous solution of a surface modifier 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 a...

Claims

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Application Information

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IPC IPC(8): C10M173/02C10M125/22C10M177/00C10N30/06
Inventor 沈志刚梁帅帅张晓静麻树林
Owner BEIHANG UNIV
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