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Environment-friendly shield tail sealing grease, preparation method and application thereof

A shield tail sealing and environmentally friendly technology, applied in the direction of lubricating composition, etc., to achieve the effects of excellent pumpability, stable performance and simple preparation process

Active Publication Date: 2014-04-23
CHINA RAILWAY FIFTH SURVEY & DESIGN INST GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Therefore, the shield tail seal grease must have good water pressure resistance, pumpability and adhesion, while the current domestic shield tail seal grease needs to be further improved in terms of pumpability and adhesion

Method used

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

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Comparison scheme
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specific Embodiment approach

[0014] The preferred embodiment of the environment-friendly shield tail sealing grease of the present invention is:

[0015] It includes the following components according to the mass ratio: 5-20 parts of base oil, 15-30 parts of viscosity index improver, 10-25 parts of lubricant, 4-10 parts of natural degradable fiber, 35-50 parts of filling granular material, Synthetic polymer 0.5-3 parts.

[0016] The base oil is any one or more of the following: 32# mechanical hydraulic oil, 46# mechanical hydraulic oil, 68# mechanical hydraulic oil, anti-wear hydraulic oil.

[0017] The viscosity index improver is any one or more of the following: T612, T613, T614, coumarone, rosin, C5 petroleum resin, C9 petroleum resin.

[0018] The lubricant is any one or more of the following: 2# lithium-based grease, 3# lithium-based grease, extreme pressure lithium-based grease.

[0019] The natural degradable fiber is any one or more of the following: fibers extracted from trees and fibers extrac...

Embodiment 1

[0030] Add 30kg of 32# mechanical hydraulic oil, 50kg of viscosity index improver (m(T612): m(C5)=1~4), and 50kg of 3# lithium base grease into the kneader, and heat up to 60~90 while stirring and kneading. ℃, continue stirring and kneading for about 1~4h, then cool down to 30~50℃. Then add 107.5kg of light calcium carbonate (5:3:2 in batches) and stir at constant temperature for 5~10min, then add 10kg of natural degradable wood fiber and 2.5kg of synthetic polymer, and knead and stir at constant temperature for 1~3h to get Shield tail seal grease.

Embodiment 2

[0032] Add 30kg of 46# mechanical hydraulic oil, 55kg of viscosity index improver (m(T613):m(C9)=1~4), and 45kg of extreme pressure lithium base grease into the kneader, and heat up to 60~90 while stirring and kneading. ℃, continue stirring and kneading for about 1~4h, then cool down to 30~50℃. Then add 103.75kg of light calcium carbonate (5:3:2 in batches) and stir at constant temperature for 5~10min, then add 15kg of natural degradable cotton fiber and 1.25kg of synthetic polymer, and knead and stir at constant temperature for 1~3h. Get shield tail seal grease.

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Abstract

The invention discloses an environment-friendly shield tail sealing grease, a preparation method and application thereof, wherein the environment-friendly shield tail sealing grease comprises the following components in parts by mass: 5 to 20 parts of base oil, 15 to 30 parts of viscosity index improver, 10 to 25 parts of lubricant, 4 to 10 parts of natural degradable fiber, 35 to 50 parts of filler particle material and 0.5 to 3 parts of synthetic macromolecule. By controlling the kneading temperature and time, the prepared environment-friendly shield tail sealing grease is used for the shield tail sealing of a shield tunneling machine in the tunnel engineering; and the sealing grease has the advantages of strong water pressure sealing resistance, excellent pumping performance, strong adhesion, good lubricity, stable performance, no corrosion, oxidization resistance, low construction cost, environment protection and facilitation of preparation technique. The water pressure sealing resistance of the product is about 1.5 times of that of the like products at home and abroad, and the pumping performance of the product is 2-3 times of that of the like products at home, so that the blockage of grease injection pipes can be largely reduced, and the working efficiency of the shield tunneling machine in the tunnel engineering is improved.

Description

technical field [0001] The invention relates to a shield tail sealing grease of a shield machine, in particular to an environment-friendly shield tail sealing grease and a preparation method and application thereof. Background technique [0002] At present, subway and rail transit are entering an unprecedented period of vigorous development. In order not to affect the built ground buildings and people's daily life, the underground construction of densely populated cities mainly adopts the shield construction method, and the main construction machine is the shield machine. . When the shield machine is excavating, there is relative sliding between the shield tail and the installed segment. In order to prevent external groundwater and mud from pouring into the shield head, a shield tail sealing device must be installed between the shield tail and the segment. [0003] Therefore, the shield tail sealing grease must have good water pressure resistance, pumpability and adhesion, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M169/00
Inventor 王德乾王立新孙世豪严振林杨岳勤郭绍影王鹏张成满毛敏张磊章远方万鹏王浩
Owner CHINA RAILWAY FIFTH SURVEY & DESIGN INST GRP CO LTD
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