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Tail grease applied to shield tunneling machine and preparation method thereof

A shield tail grease and shield machine technology, applied in the field of fine chemicals, can solve the problems of high price, long delivery cycle, high pumpability and adhesion requirements, etc., and achieve low cost and water pressure resistance sealing Good, excellent pumpability

Inactive Publication Date: 2017-08-01
浙江国能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Therefore, shield tail grease has high requirements for water pressure resistance, pumpability and adhesion. At present, the quality of domestic shield tail grease in the domestic market needs to be improved in terms of performance, while foreign brands have good quality but high prices. Long lead time

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A shield tail grease for shield machine, the components and mass percentages are as follows: magnesium calcium carbonate 30%, calcium carbonate 2%, oil 20%, polyisobutylene 35%, natural degradable cellulose 13% ( 1 micron in length). First, the oil and polyisobutylene are mixed, stirred and kneaded evenly, and at the same time, the temperature is raised to 80-110 °C, and the temperature is kept and stirred for 5-20 minutes; then, natural degradable cellulose is added, and at the same time, the temperature is raised to 150-180 °C, and stirred for 15-40 minutes; After that, calcium magnesium carbonate and calcium carbonate are added, and the mixture is kept warm and kneaded and stirred for 1 to 2 hours to obtain the shield tail fat for shield machine according to the present invention.

Embodiment 2

[0021] A shield tail grease for shield machine, the components and mass percentages are as follows: magnesium calcium carbonate 33%, oil 38%, polyisobutylene 10%, T613 ethylene-propylene copolymer 3%, natural degradable cellulose 16% (length 200 microns). First, the oil, polyisobutylene and T613 ethylene-propylene copolymer are mixed and kneaded evenly, and at the same time, the temperature is raised to 80-110 °C, and the temperature is kept and stirred for 5-20 minutes; Stir for 15 to 40 minutes; after that, add magnesium calcium carbonate, keep warm, knead and stir for 1 to 2 hours to obtain the shield tail grease for shield machine according to the present invention.

Embodiment 3

[0023] A shield tail grease for shield machine, the components and mass percentages are as follows: magnesium calcium carbonate 34%, talc 33%, oil 18%, T612 ethylene-propylene copolymer 10%, natural degradable cellulose 5% (length 500 microns). First, the oil and T612 ethylene-propylene copolymer are mixed and kneaded evenly, and at the same time, the temperature is raised to 80-110 ° C, and the temperature is kept stirring for 5-20 minutes; 40 minutes; after that, add magnesium calcium carbonate and talc powder, keep warm, knead and stir for 1 to 2 hours, to obtain the shield tail grease for shield machine according to the present invention.

[0024] The product quality detection index of the embodiment of the present invention 1 to embodiment 3 is as follows:

[0025] Appearance: light yellow paste, the test conditions are visual inspection;

[0026] Density: 1.3±0.1, test condition is 25℃, g / cm 3 ;

[0027] Penetration: 242±4, test condition is 25℃, 0.1mm;

[0028] Vol...

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Abstract

The invention belongs to the field of fine chemicals and particularly discloses tail grease applied to a shield tunneling machine and a preparation method thereof. The tail grease applied to the shield tunneling machine is prepared from the following ingredients by mass percent: 32 to 67% of filling agent, 10 to 35% of viscosity index improver, 18 to 38% of oil and 5 to 16% of natural degradable cellulose. The tail grease prepared from the raw materials and through the preparation method disclosed by the invention has the advantages of good water pressure sealing performance, strong adhesion, excellent pumpability, no gasket corrosion, simple preparation technology, low construction cost and environmental friendliness.

Description

technical field [0001] The invention belongs to the field of fine chemicals, and relates to an industrial grease, in particular to a shield tail grease used in a shield machine and a preparation method thereof. Background technique [0002] With the development of the city, in order to relieve the pressure of ground traffic and land use, underground engineering has entered a period of rapid development. The shield construction method is the commonly used construction method for underground engineering, and the commonly used construction machinery is shield machine. In the process of shield tunneling, there is a gap between the shield tail wire brush and the segment. In order to prevent the intrusion of mud and groundwater, the tail of the shield must be sealed. Shield tail grease is an important material for shield tail sealing, which can effectively fill the gap, protect the shield tail, and make the shield tunnel smoothly. [0003] Therefore, shield tail grease has higher...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/04C09K3/10C10N50/10C10N40/34
CPCC09K3/10C09K2003/1087C10M169/044C10M2201/062C10M2201/102C10M2205/022C10M2205/024C10M2205/026C10M2209/12C10N2040/34C10N2050/10C10N2010/04
Inventor 宋志国胡云睿王琳施雪涛
Owner 浙江国能科技有限公司
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