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A kind of water-based lubricating medium for ship closed water lubricating propulsion system and preparation method thereof

A technology of lubricating medium and propulsion system, applied in lubricating parts, lubricating composition, engine lubrication, etc., can solve the problems of equipment material falling off, reducing service life, damaging shafts and bearings, etc., to prolong service life and reduce air bubbles The formation, fast defoaming effect

Active Publication Date: 2022-05-13
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Long-term cavitation will cause equipment material to fall off, damage shafts and bearings, and reduce service life

Method used

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  • A kind of water-based lubricating medium for ship closed water lubricating propulsion system and preparation method thereof
  • A kind of water-based lubricating medium for ship closed water lubricating propulsion system and preparation method thereof
  • A kind of water-based lubricating medium for ship closed water lubricating propulsion system and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The preparation method of water-based lubricating medium is as follows:

[0037] Mix and stir polydimethylsiloxane and silica nanoparticles at a mass ratio of 10:1, raise the temperature to 120° C. and continue stirring for more than 1 hour to obtain a mixed solution. In order to make the main defoaming medium blend well with water, an emulsifier is added to the mixed solution (mixture of polydimethylsiloxane and emulsion), and the mixed solution (polydimethylsiloxane) after adding the emulsifier Alkanes and emulsified liquid mixture) cooled to 90°C and continued to stir until it was stirred into a milky white liquid, and the additive for the water-based lubricating medium was completed. Add additives to water at a mass ratio of 1:200 to make the water-based lubricating medium. The addition of polydimethylsiloxane increases the viscosity of the water-based lubricating medium, enabling the formation of a thicker lubricating film between friction pairs, increasing the be...

Embodiment 2

[0039] The preparation method of water-based lubricating medium is as follows:

[0040]Mix and stir polydimethylsiloxane and silica nanoparticles at a mass ratio of 5:1, raise the temperature to 120° C. and continue stirring for more than 1 hour to obtain a mixed solution. In order to make the main defoaming medium blend well with water, an emulsifier is added to the mixed solution (mixture of polydimethylsiloxane and emulsion), and the mixed solution (polydimethylsiloxane) after adding the emulsifier Alkanes and emulsified liquid mixture) cooled to 90°C and continued to stir until it was stirred into a milky white liquid, and the additive for the water-based lubricating medium was completed. Add additives to water at a mass ratio of 1:200 to make the water-based lubricating medium.

Embodiment 3

[0042] The preparation method of water-based lubricating medium is as follows:

[0043] Mix and stir polydimethylsiloxane and silica nanoparticles at a mass ratio of 10:1, raise the temperature to 120° C. and continue stirring for more than 1 hour to obtain a mixed solution. In order to make the main defoaming medium blend well with water, an emulsifier is added to the mixed solution (mixture of polydimethylsiloxane and emulsion), and the mixed solution (polydimethylsiloxane) after adding the emulsifier Alkanes and emulsified liquid mixture) cooled to 90°C and continued to stir until it was stirred into a milky white liquid, and the additive for the water-based lubricating medium was completed. Add additives to water at a mass ratio of 1:600 ​​to make the water-based lubricating medium.

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Abstract

The invention discloses a water-based lubricating medium for a ship's closed-type water-lubricated propulsion system and a preparation method thereof. The water-based lubricating medium is prepared by mixing additives and water in proportion, and polydimethylsiloxane and Silicon nanoparticles are mixed and stirred at a fixed ratio, and the temperature is raised to 100-140°C and continuously stirred for a period of time to obtain a mixed solution; an emulsifier is added to the mixed solution, the temperature is lowered to 80-95°C, and stirred until a milky white liquid is obtained, which is the additive ; The additive and water are mixed according to a fixed ratio to obtain a water-based lubricating medium. Polydimethylsiloxane and nano-silica particles have a certain degree of hydrophobicity, which can inhibit the formation of air bubbles in water-based lubricating media, and can also eliminate air bubbles to protect shafts and bearings from cavitation. The invention utilizes the high viscosity and hydrophobicity of polydimethylsiloxane and silicon dioxide to improve the friction performance of water-lubricated bearings, prolong the service life of shafts and bearings, reduce operating costs, and improve the reliability of the propulsion system of inland ships.

Description

technical field [0001] The invention belongs to the field of lubricating media, and in particular relates to a water-based lubricating medium used in a ship's closed water-lubricated propulsion system and a preparation method thereof, which is used for improving the friction performance of closed water-lubricated bearings and prolonging the service life of shafts and bearings. base lubricating medium. Background technique [0002] With the development of the shipbuilding industry, there are more and more ships with large tonnage and high performance, and the industry has higher requirements for the performance of ship propulsion systems under various working conditions. As an important part of the ship's propulsion system, the bearing directly determines the reliability of the ship's work. In the work of the ship propulsion system, the state of lubrication between the bearing and the shaft is very important. The traditional bearing lubrication method is closed oil lubricat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M173/02F16N15/04F16N39/00C10N30/18C10N40/02
CPCC10M173/02F16N15/04F16N39/00C10M2201/105C10M2229/041C10N2030/18C10N2030/64C10N2040/02
Inventor 郭智威黄齐韧袁成清
Owner WUHAN UNIV OF TECH
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