Degradable sealing grease for shield tail of tunnel shield tunneling machine and preparation method of sealing grease

A technology of shield tail sealing and tunnel shielding, which is applied in the petroleum industry, lubricating compositions, etc., can solve the problems of direct waterproofing, lubricity and mechanical stability, etc., and achieve good lubricity, good waterproof effect, and excellent lubricity Effect

Inactive Publication Date: 2017-11-28
苏州惠丰润滑材料有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the existing grease technology, the shield tail sealing grease mainly plays the role of adhesion, lubricity and mechanical stability, and

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0021] Example 1

[0022] A degradable tunnel shield tunneling machine shield tail sealing grease, which is composed of the following mass fraction components: 18% compound modified castor oil as base oil, 48% auxiliary filler, 15% tackifier, 11 % Compound calcium sulfonate grease, 5% natural plant fiber, 3% water-absorbing particles.

Example Embodiment

[0023] Example 2

[0024] A degradable tunnel shield tunneling machine shield tail sealing grease, which is composed of the following mass fraction components: 20% polyol grease as base oil, 32% auxiliary filler, 18% tackifier, 11% Lithium grease, 5% degradable synthetic fiber, 4% water-absorbing particles.

Example Embodiment

[0025] Example 3

[0026] A degradable tunnel shield tunneling machine shield tail sealing grease, which is composed of the following components in mass fraction: 25% modified castor oil, polyol fat mixture as base oil, 33% auxiliary filler, 20% Tackifier, 14% calcium sulfonate complex grease, lithium-based grease mixture, 3% natural plant fiber, 5% water-absorbing particles.

[0027] The preparation method is as follows: first add modified castor oil and polyol grease, complex calcium sulfonate grease, lithium-based grease, and tackifier into a kneader at room temperature for kneading for 60-90 minutes while heating and heating to 60- 90°C. Subsequently, natural plant fibers and water-absorbing particles are added and kneading is continued for 60 minutes. Finally, the auxiliary filler is added and the temperature is lowered to 40-60°C for kneading for 10-20 minutes, followed by cooling and grinding to obtain a degradable tunnel shield tunneling machine shield tail sealing grease...

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PUM

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Abstract

The invention discloses degradable sealing grease for the shield tail of a tunnel shield tunneling machine. The sealing grease is prepared from components in percentage by mass as follows: 15%-30% of base oil, 20%-50% of auxiliary filler, 10%-25% of a tackifier, 10%-15% of lubricating grease, 3%-8% of fiber material and 1%-5% of water-absorbing particles. The sealing grease for the shield tail of the shield tunneling machine has good pumpability, oxidation resistance, outstanding sealing performance, excellent lubricating performance, degradability and adhesion and also has a good waterproof effect due to addition of crosslinked net-like water-absorbent particles in the grease.

Description

technical field [0001] The invention relates to the technical field of lubricating materials, in particular to a degradable shield tail sealing grease for a tunnel shield boring machine. Background technique [0002] At present, with the development and needs of national and urban traffic conditions, more and more urban planners and builders are constantly focusing on the construction of underground tunnels and projects without affecting people's normal travel and work and life. Since the beginning of the 21st century, there has been a broad market for urban underground space construction in my country. The construction needs of subways, tunnels, highways, municipal engineering, and hydropower tunnel projects in major cities make the construction method of shield boring machine an inevitable choice for people. [0003] Tunnel shield boring machine has become the main engineering equipment of modern tunnel excavation construction. During the construction of the shield machi...

Claims

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Application Information

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IPC IPC(8): C10M169/00C10M177/00C10N30/10C10N30/06C10N40/34
CPCC10M169/00C10M177/00C10M2207/2835C10M2207/402C10M2209/12C10M2219/0445C10N2030/06C10N2030/10C10N2030/26C10N2030/36C10N2030/64C10N2040/34
Inventor 耿飞蒋燕白涛左晓兵左明明惠进德宋杰沈志晨王涛张桐
Owner 苏州惠丰润滑材料有限公司
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