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Environment-friendly shield tail sealing grease and preparation method thereof

An environment-friendly, shield-tail sealing technology, applied in the field of sealing grease, to achieve excellent low-temperature performance, damage prevention, and good pumpability

Inactive Publication Date: 2019-01-15
SUZHOU HUIFENG LUBRICANT +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing technology has not been able to meet the above requirements, especially when used in a low temperature environment, while ensuring good pumpability, sealing, and lubricity, it should also meet the requirements of environmental protection and pollution-free.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Use the following components to prepare the shield tail sealing grease: the mass fraction is 35% modified castor oil as base oil, the mass fraction is 12% calcium sulfonate complex as thickener, and the mass fraction is 3% natural plant fiber As a fiber additive, a mixture of polyester resin and polyurethane with a mass fraction of 8% as a tackifier, graphite, boron nitride, and polytetrafluoroethylene as a solid lubricant with a mass fraction of 2%, short cotton with a mass fraction of 40% fiber, bamboo fiber, and silica as auxiliary fillers.

[0024] The preparation method is as follows: add the base oil, the mixture of polyester resin and polyurethane, and the composite calcium sulfonate into the reactor at room temperature, heat up to 60-80°C and stir evenly, then add natural plant fiber and graphite at 60-80°C Stir at ℃ for 30-60 minutes; finally add short cotton fiber, bamboo fiber and white carbon black into the reaction kettle, stir evenly, cool and grind to obt...

example 2

[0026] Use the following components to prepare the shield tail seal grease: 32% mass fraction of modified castor oil and double grease mixture (mass ratio is 3:1) as base oil, 15% mass fraction of complex calcium sulfonate as thickener The animal fiber with a mass fraction of 5% is used as a fiber additive, the mixture of gum arabic, gelatin and guar gum with a mass fraction of 12% is used as a tackifier, and the boron nitride with a mass fraction of 3% is used as a solid lubricant. Superfine calcium carbonate, bentonite, mica powder, and kaolin with a fraction of 33% are used as auxiliary fillers.

[0027] The preparation method is: add the modified castor oil, the double fat mixture, the mixture of gum arabic, gelatin, guar gum and complex calcium sulfonate into the reaction kettle at room temperature, heat up to 60-80°C and stir evenly, then add Stir animal fiber and boron nitride at 60-80°C for 30-60 minutes; finally add superfine calcium carbonate, bentonite, mica powder,...

example 3

[0029] Use the following components to prepare the shield tail seal grease: 38% of the modified castor oil as the base oil, 13% of the complex calcium sulfonate as the thickener, and 6% of the synthetic fiber as the mass fraction Fiber additives, a mixture of carrageenan, gum arabic, gelatin, guar gum, and flax gum with a mass fraction of 10% as a tackifier, boron nitride, graphite, and tungsten disulfide with a mass fraction of 4% as a solid lubricant, mass Short cotton fiber, bamboo fiber, superfine calcium carbonate, bentonite, mica powder, kaolin, and white carbon black with a fraction of 29% are used as auxiliary fillers.

[0030] The preparation method is: add the mixture of modified castor oil, carrageenan, gum arabic, gelatin, guar gum, flax gum and complex calcium sulfonate into the reaction kettle at room temperature, heat up to 60-80°C and stir evenly Then add synthetic fiber, boron nitride, graphene, tungsten disulfide and stir for 30-60 minutes at 60-80°C; finally...

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PUM

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Abstract

The invention relates to the field of lubricating sealing materials, in particular to an environment-friendly shield tail sealing grease, which comprises the following components by mass percentage: 30%-45% of base oil, 25%-50% of auxiliary filler, 10%-15% of a thickener, 3%-8% of fiber, 5%-15% of a tackifier and 1%-5% of a solid lubricant. The shield tail sealing grease prepared according to theinvention can be applied under low temperature conditions, and has the advantages of good pumpability, sealing performance, lubricity, wear and impact resistance, oxidation stability and the like. Inaddition, the shield tail sealing grease has good pumpability, and can well prevent the damage of shield machine tail silt and the like.

Description

technical field [0001] The invention relates to a sealing grease, in particular to an environment-friendly shield tail sealing grease for a shield machine. Background technique [0002] The shield tunnel boring machine is a construction tool for tunnel construction. It can play a role in supporting the pressure of the subsurface soil layer when excavating the ground and assembling the lining. At present, with the development of domestic infrastructure and the construction of subways, tunnels, highways, municipal engineering, and hydropower tunnel projects in major cities, shield machines have become a construction method that is gradually and widely used. The continuous utilization and effective development of underground space fully reflect the development level of a city or even a country's engineering technology. The successful completion of a project tunnel plays a decisive role in the use and performance of the shield tunneling machine. The construction environment and...

Claims

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Application Information

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IPC IPC(8): C10M169/00C10N30/08C10N30/06C10N30/10C10N40/34
CPCC10M169/00C10M2201/00C10M2201/041C10M2201/08C10M2201/102C10M2201/103C10M2207/402C10M2209/102C10M2209/12C10M2213/062C10M2217/041C10M2219/0445C10N2030/06C10N2030/08C10N2030/10C10N2040/34C10N2030/36C10N2030/64
Inventor 耿飞白涛蒋燕左晓兵左明明宋杰沈志晨顾敏峰张旭超
Owner SUZHOU HUIFENG LUBRICANT
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