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A kind of environment-friendly shield tail sealing grease and preparation method thereof

A shield tail sealing and environment-friendly technology, applied in the petroleum industry, lubricating compositions, etc., can solve the problems of easy hardening and poor pumpability, and achieve the effects of strong adhesion, corrosion prevention and good pumping effect.

Active Publication Date: 2022-04-29
CNBM ZHONGYAN TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Preferably, the base oil is a mixture of one or more of polyalphaolefin base oil, polyol ester synthetic oil, biodiesel and mechanical hydraulic oil, more preferably, the base oil is selected from polyalphaolefin base At least one of oil and polyol ester synthetic oil. After a large number of experimental screenings, the results show that the use of α-olefin base oil and polyol ester synthetic oil as the base oil can control the low temperature performance of shield tail seal grease, and the pour point of the base oil can reach Below -40℃, and has excellent oxidation stability and thermal stability, good low temperature fluidity, high viscosity index, good lubricity and anti-wear performance, excellent solubility, excellent biodegradability and renewable performance, which effectively solves the shortcomings of shield tail grease, such as poor pumpability and easy hardening at low temperature

Method used

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  • A kind of environment-friendly shield tail sealing grease and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Environmentally friendly shield tail sealing grease is composed of the following components of mass percentage: poly-α olefin base oil 5%, talc powder 40%, bamboo powder 14%, composite aluminum-based grease 10%, petroleum resin 20%, diethylamine-based methyltriethoxysilane 3%, degradable wood fiber 5%, microcapsule 3%, microcapsule wall material is polylactic acid - hydroxyacetic acid copolymer and polyvinyl alcohol crosslinker, the core material is Bacillus subtilis, Bacillus licheniformis, Saccharomyces cerevisiae mixture. After testing, the environmentally friendly shield tail sealing grease is a yellow-white uniform fiber paste.

Embodiment 2

[0039]Environmentally friendly shield tail sealing grease, consisting of the following mass percentage components: polyol ester synthetic oil 10%, calcium carbonate 40%, sunflower shell powder 10%, composite aluminum-based grease 10%, degradable polyester resin 20%, diethylamine-based methyltriethoxysilane 3%, degradable cotton fiber 4%, microcapsules 3%, microcapsules wall material is polylactic acid - hydroxyacetic acid copolymer and polyvinyl alcohol crosslinker, the core material is Bacillus subtilis, gram-negative bacteria, Pseudomonas aeruginosa, Candida pseudomonas aeruginosa mixture. After testing, the environmentally friendly shield tail sealing grease is a yellow-white uniform fiber paste.

Embodiment 3

[0041] Environmentally friendly shield tail sealing grease consists of the following components of mass percentage: biodiesel 13%, talc 45%, compound aluminum-based grease 15%, ethylene propylene copolymer 16%, diethylaminomethyltriethoxysilane 4%, degradable cotton fiber 4%, microcapsules 3%, microcapsule wall material is polylactic acid - hydroxyacetic acid copolymer and polyvinyl alcohol crosslinker, the core material is Bacillus licheniformis, gram-negative bacteria, Pseudomonas aeruginosa, Candida pseudomonas, Saccharomyces saccharomyces a mixture. After testing, the environmentally friendly shield tail sealing grease is a yellow-white uniform fiber paste.

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Abstract

The invention relates to a shield tail sealing grease for a shield machine, which uses base oil, filler, lubricant, tackifier, adhesion modifier, reinforcing agent, and microcapsules as raw materials to prepare a grease with strong adhesion, Shield tail sealing grease with good sealing performance, good pumping lubrication effect, rapid degradation, environmental friendliness and stable quality.

Description

Technical field [0001] The present invention relates to a shield tail sealing grease for a shield machine, in particular to a formulation of an environmentally friendly shield tail sealing grease and a preparation method thereof. Background [0002] With the vigorous development of infrastructure construction such as river crossing tunnels, comprehensive pipe corridors, subways, highways and railways in China, in order to avoid the impact on the existing buildings on the ground and the daily work and life of the people, more and more underground tunnel projects are being applied in construction, as tunneling equipment for tunnel projects, shield machines are also more and more widely used. [0003] The tunneling of the shield machine and the splicing of the shield segment are carried out at the same time, there is a gap between the shield tail of the shield machine and the pipe segment that has been installed for the shield machine, in order to avoid the external groundwater and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M169/00C10N30/02C10N30/06C10N30/08C10N30/10C10N40/34
CPCC10M169/00C10M2201/102C10M2201/062C10M2209/12C10M2209/102C10M2207/2835C10M2205/0206C10M2205/022C10M2205/024C10M2227/04C10M2205/20
Inventor 朱玉雪力乙鹏李婷单立福马强郑东昊马伟男张鹏任硕
Owner CNBM ZHONGYAN TECH
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