Environment-friendly shield tail sealing grease and preparation method thereof

A shield tail sealing and environmentally 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 preventing corrosion, improving the degradation speed, and being environmentally friendly.

Active Publication Date: 2021-01-01
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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  • Environment-friendly shield tail sealing grease and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Environmentally friendly shield tail sealing grease, composed of the following components by mass percentage: polyalphaolefin base oil 5%, talcum powder 40%, bamboo powder 14%, composite aluminum-based grease 10%, petroleum resin 20%, diethylamine 3% substituted methyltriethoxysilane, 5% degradable wood fiber, 3% microcapsules, the wall material of the microcapsules is a cross-linked product of polylactic acid-glycolic acid copolymer and polyvinyl alcohol, and the core material is Bacillus subtilis Bacillus, Bacillus licheniformis, Candida resolivans mixture. After testing, the prepared environmentally friendly shield tail sealing grease is a yellow-white uniform fiber paste.

Embodiment 2

[0039] Environmentally friendly shield tail sealing grease is composed of the following components by mass percentage: 10% polyol ester synthetic oil, 40% calcium carbonate, 10% sunflower seed shell powder, 10% composite aluminum-based grease, and degradable polyester resin 20%, diethylaminomethyltriethoxysilane 3%, degradable cotton fiber 4%, microcapsule 3%, the microcapsule wall material is a cross-linked product of polylactic acid-glycolic acid copolymer and polyvinyl alcohol , the core material is a mixture of Bacillus subtilis, Gram-negative bacteria, Pseudomonas aeruginosa and Candida. After testing, the prepared environmentally friendly shield tail sealing grease is a yellow-white uniform fiber paste.

Embodiment 3

[0041] Environmentally friendly shield tail sealing grease, composed of the following components by mass percentage: 13% biodiesel, 45% talcum powder, 15% composite aluminum-based grease, 16% ethylene-propylene copolymer, diethylaminomethyltriethyl Oxysilane 4%, degradable cotton fiber 4%, microcapsule 3%, the microcapsule wall material is a cross-linked product of polylactic acid-glycolic acid copolymer and polyvinyl alcohol, the core material is Bacillus licheniformis, Gram-negative Bacteria, Pseudomonas aeruginosa, Candida, Candida solutes mixture. After testing, the prepared environmentally friendly shield tail sealing grease is a yellow-white uniform fiber paste.

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Abstract

The invention relates to shield tail sealing grease for a shield tunneling machine, and the sealing grease is prepared from base oil, a filling agent, a lubricating agent, a tackifier, an adhesive force modifier, a reinforcing agent and microcapsules and has the advantages of strong adhesive force, good sealing property, good pumping lubricating effect, quick degradation, environmental friendliness and stable quality.

Description

technical field [0001] The invention relates to a shield tail sealing grease used for a shield machine, in particular to a formula of an environment-friendly shield tail sealing grease and a preparation method thereof. Background technique [0002] With the vigorous development of infrastructure construction such as cross-river tunnels, comprehensive pipe corridors, subways, highways and railways in China, more and more underground tunnel projects are being constructed and applied in order to avoid impacts on existing buildings on the ground and people’s daily work and life. As the tunneling equipment for tunnel engineering, the shield machine is also being used more and more widely. [0003] The excavation 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 installed segment for the shield machine to move. In order to avoid the external groundwater and mud during ...

Claims

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Application Information

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Patent Type & Authority Applications(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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