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Environment-friendly tail sealing grease and preparation method thereof

An environmentally friendly, shield tail sealing technology, applied in the petroleum industry, lubricating compositions, etc., can solve the problems of difficult storage, easy deterioration of shield tail grease, etc., to avoid pollution, excellent biodegradability, and strong adhesion. Effect

Inactive Publication Date: 2019-01-08
DALIAN RES & DESIGN INST OF CHEM IND +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Chinese patent CN 104611100 B discloses an environment-friendly shield tail oil and its preparation method, wherein the filler used is starch. Although the oil is environmentally friendly, there is a problem that the prepared shield tail oil is easy to deteriorate and difficult to store

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Be the soybean oil that mass fraction is 17%, the polyisobutylene that mass fraction is 25%, the potassium sorbate that mass fraction is 1%, the emulsifier that mass fraction is 2%, the wood flour that mass fraction is 6%, mass fraction is 46 % of heavy calcium carbonate, mass fraction of 3% of the plant fibers kneaded for 100 minutes to prepare environmentally friendly shield tail seal grease.

Embodiment 2

[0019] The mass fraction is 15% rapeseed oil, the mass fraction is 25.5% polyisobutene, the mass fraction is 1.5% tert-butyl p-hydroxyanisole, the mass fraction is 3.5% emulsifier, and the mass fraction is 0.3% sodium benzoate , walnut shell powder with a mass fraction of 7.2%, heavy calcium carbonate with a mass fraction of 45%, and animal fiber with a mass fraction of 2% were kneaded and kneaded for 110 minutes to prepare an environmentally friendly shield tail sealing grease.

Embodiment 3

[0021] The castor oil that the mass fraction is 20%, the polyisobutene that the mass fraction is 18%, the sodium benzoate that the mass fraction is 1.2%, the propyl gallate that the mass fraction is 0.8%, the emulsifier that the mass fraction is 1.8%, and the mass fraction is 8 % wood flour, 45% ground calcium carbonate, 3% plant fibers and 1.2% animal fibers were kneaded for 90 minutes to prepare environmentally friendly shield tail seal grease.

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Abstract

The invention discloses environment-friendly tail sealing grease and a preparation method thereof, and mainly aims at solving the biodegradation problems of the conventional tail sealing grease by adoption of a method for adding a biodegradable filling and biodegradable oil in the tail sealing grease to improve the biodegradation performance of the tail sealing grease. The environment-friendly tail sealing grease is prepared from 6-30% of biodegradable oil, 5-30% of polyisobutene, 0.5-3% of a preservative, 1.5-4.5% of an emulsifier, 4-10% of a biodegradable filling, 35-52% of coarse whiting and 1.5-10% of a fiber in mass percentage through carrying out uniformly kneading for 40-120 minutes. The prepared environment-friendly tail sealing grease has favorable biodegradability and excellent fluffiness, and is strong in adhesion, high in pumpability, good in water-proof sealing property, long in storage life, stable in performance, low in cost and easy to construct.

Description

technical field [0001] The invention relates to a shield sealing grease of a shield machine, in particular to an environment-friendly shield tail sealing grease. Background technique [0002] In recent years, major cities have actively developed underground rail transit in order to alleviate and improve traffic tension. It is estimated that by 2020, there will be 50 cities nationwide with rail transit, and the rail transit will reach a scale of nearly 6,000 kilometers. The demand for shield tail sealing grease used in shield tunneling construction will increase sharply. At present, shield tail seal grease is generally composed of oil, grease, filler, fiber and other additives. The oil is mainly mineral base oil, chlorinated paraffin, engine oil, hydraulic oil, etc. These materials are difficult to degrade and are harmful to soil and The environment produces pollution. Greases are mainly lithium-based greases, calcium-based greases, sodium-based greases, mixed soap-based g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/04C10N40/34C10N50/10
CPCC10M169/04C10M2201/062C10M2205/02C10M2207/026C10M2207/046C10M2207/122C10M2207/124C10M2207/141C10M2207/144C10M2207/40C10N2010/02C10N2010/04C10N2040/34C10N2050/10
Inventor 高玉荣韩建国赵汝鸣闻和永宋洪雁刘恩德刘岩
Owner DALIAN RES & DESIGN INST OF CHEM IND
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