Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

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
View PDF10 Cites 9 Cited by
  • 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 cannot play a good role in direct waterproofing, impact resistance, and maintaining efficient degradation of lubricating materials without pollution.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

example 1

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

example 2

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

example 3

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

[0027] The preparation method is as follows: firstly, at room temperature, add modified castor oil, polyol grease, complex calcium sulfonate grease, lithium-based grease, and tackifier into a kneader for 60-90 minutes while heating to 60- 90°C. The natural plant fibers and water-absorbing particles were then added and the kneading was continued for 60 minutes. Finally, add auxiliary filler and lower the temperature to 40-60°C and knead for 10-20 minutes, then cool down and grind to obtain a degradable shield tail sealing grease for tunnel shield boring machine.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
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
Features
  • Generate Ideas
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com