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Environment-friendly shield tail sealing grease and preparation method thereof

A shield tail sealing and environment-friendly technology, applied in the petroleum industry, lubricating composition, etc., can solve the problems of poor sealing performance, large amount of sand layer, environmental pollution, etc., achieve good lubricity, good environmental protection performance, and simple preparation scheme Effect

Inactive Publication Date: 2020-01-14
NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide an environment-friendly shield tail sealing grease and its preparation method to solve the problem of large amount of sand layer, poor sealing performance and high cost in the process of using the traditional shield tail sealing grease proposed in the above background technology , the serious problem of polluting the environment

Method used

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  • Environment-friendly shield tail sealing grease and preparation method thereof

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Effect test

preparation example Construction

[0027] A preparation method of an environment-friendly shield tail sealing grease, the specific preparation steps of the preparation method of the environment-friendly shield tail sealing grease are as follows:

[0028] S1: Stir and mix the base oil, extreme pressure lithium base grease and viscosity improver: Weigh the base oil, extreme pressure lithium base grease and viscosity improver according to the mass specific gravity and put them in the kneader, turn on the kneader Stir and knead the internal raw materials, heat the inside of the kneader during the process of stirring and kneading, so that the temperature inside the kneader rises to 60-80 degrees Celsius, and make the kneader work for 2-3 hours to obtain a preliminary mixture;

[0029] S2: Add calcium carbonate powder to the mixed material after kneading, and continue mixing: add calcium carbonate powder to the preliminary mixed material obtained in step S1, start the kneader, continue to stir and mix for 10-12 minute...

Embodiment 1

[0034] Base oil, viscosity modifier, extreme pressure lithium grease, calcium carbonate powder and reinforcing fiber are as follows according to mass proportion: base oil 18Kg, viscosity modifier 26Kg, extreme pressure lithium grease 14Kg, calcium carbonate powder 6Kg and reinforcing fiber 14Kg.

[0035] The specific preparation steps of the preparation method of the environment-friendly shield tail sealing grease are as follows:

[0036] S1: Stir and mix the base oil, extreme pressure lithium base grease and viscosity improver: Weigh the base oil, extreme pressure lithium base grease and viscosity improver according to the mass specific gravity and put them in the kneader, turn on the kneader Stir and knead the internal raw materials, heat the inside of the kneader during the process of stirring and kneading, so that the temperature inside the kneader rises to 60 degrees Celsius, and make the kneader work for 2 hours to obtain a preliminary mixture;

[0037] S2: Add calcium c...

Embodiment 2

[0040] Base oil, viscosity improver, extreme pressure lithium base grease, calcium carbonate powder and reinforcing fiber are respectively according to mass proportion: base oil 20Kg, viscosity improver 28Kg, extreme pressure lithium base grease 16Kg, calcium carbonate powder 8Kg and reinforcing fiber 16Kg.

[0041] The specific preparation steps of the preparation method of the environment-friendly shield tail sealing grease are as follows:

[0042] S1: Stir and mix the base oil, extreme pressure lithium base grease and viscosity improver: Weigh the base oil, extreme pressure lithium base grease and viscosity improver according to the mass specific gravity and put them in the kneader, turn on the kneader Stir and knead the internal raw materials, heat the inside of the kneader during the process of stirring and kneading, so that the temperature inside the kneader rises to 70 degrees Celsius, and make the kneader work for 2.5 hours to obtain a preliminary mixture;

[0043] S2:...

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Abstract

The invention belongs to the technical field of shield tail sealing greases and in particular discloses an environment-friendly shield tail sealing grease and a preparation method thereof. The environment-friendly shield tail sealing grease comprises raw materials of base oil, a viscosity improver, an extreme pressure lithium base grease, calcium carbonate powder and a reinforcing fiber. The preparation method of environment-friendly shield tail sealing grease specifically comprises the following steps: S1, stirring and mixing the base oil, the extreme pressure lithium base grease and the viscosity improver, namely weighing the base oil, the extreme pressure lithium base grease and the viscosity improver in accordance with a weight ratio, and putting the components into a kneading machine;S2, adding calcium carbonate powder into the kneaded mixture, and performing continue mixing; and S3, adding the reinforcing fiber, so as to obtain a finished product. The raw materials are the baseoil, the viscosity improver, the extreme pressure lithium base grease, the calcium carbonate powder and the reinforcing fiber, the raw materials are common and low in cost, the finished product is good in lubricity, good in sealing effect, good in oxidation resistance and good in environmental performance., and the preparation scheme is simple and fast.

Description

technical field [0001] The invention relates to the technical field of shield tail sealing grease, in particular to an environment-friendly shield tail sealing grease and a preparation method thereof. Background technique [0002] A shield machine is a tunnel boring machine that uses the shield method. The construction method of shield tunneling is the "shield" (referring to the supporting segment) of the tunnel constructed (laid) by the roadheader while excavating, which is different from the open construction method. [0003] Internationally, the generalized shield machine can also be used in rock formations, but it is different from the open (non-shield method) tunnel boring machine. In our country, it is customary to call the tunnel boring machine used in soft soil formations (narrow sense) shield machine, and the one used in rock formations is called (narrow sense) TBM. [0004] According to the working principle, the shield machine is generally divided into hand-exca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/00C10N30/06C10N30/10C10N40/34C10N50/10
CPCC10M169/00C10M2201/062
Inventor 张舵
Owner NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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