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Shield tail sealing grease with excellent adhesion and preparation method thereof

A technology of shield tail sealing and adhesion, which is applied in the field of sealing grease, can solve the problems of shield machine damage, reduce grease pumpability, slurry leakage, etc., achieve high dropping point, excellent high temperature resistance, and excellent mechanical stability Effect

Inactive Publication Date: 2017-08-18
苏州瀚固新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the shield tail seal grease currently on the market often leaks during use, which greatly increases the risk of damage to the shield machine
This is mainly due to the poor viscosity and adhesion of most existing sealing greases. However, blindly increasing the viscosity will reduce the pumpability of the grease. Therefore, the existing shield tail sealing oil must be further optimized. The proportioning scheme ensures the pumpability and at the same time, there is no leakage of slurry

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] A shield tail seal grease with excellent adhesion, the composition and mass ratio are as follows:

[0012] The quality of the base oil is 15 parts, and its composition and mass ratio are: a mixture of synthetic base oil, mineral base oil, and waste oil, and its proportion is 50%, 30%, and 20% respectively. The gutter oil described in this application is the waste animal fat and swill oil of the catering industry.

[0013] The strengthening agent is 20 parts, and its composition and mass ratio are: cotton, asbestos, bamboo fiber, graphene and pp fiber, and its proportion is 10%, 15%, 25%, 20% and 30% respectively.

[0014] The viscosity index improver is 30 parts, and its composition and mass ratio are: coumarone, C9 petroleum resin, tackifying resin and alcohol polymer additives, and their proportions are 27%, 23%, 32% and 18% respectively .

[0015] The filler is 50 parts, and its composition and mass ratio are: graphite, magnesium carbonate, calcium carbonate, calci...

Embodiment 2

[0018] A shield tail seal grease with excellent adhesion, the composition and mass ratio are as follows:

[0019] The quality of the base oil is 12 parts, and its composition and mass ratio are: a mixture of synthetic base oil, mineral base oil, and waste oil, and its proportion is 45%, 35%, and 20% respectively.

[0020] The reinforcing agent is 18 parts, and its composition and mass ratio are: cotton, asbestos, bamboo fiber, graphene and pp fiber, and its proportion is 12%, 16%, 22%, 20% and 30% respectively.

[0021] The viscosity index improver is 35 parts, and its composition and mass ratio are: coumarone, C9 petroleum resin, tackifying resin and alcohol polymer additives, and their proportions are 25%, 25%, 30% and 20% respectively .

[0022] The filler is 52 parts, and its composition and mass ratio are: graphite, magnesium carbonate, calcium carbonate, calcium sulfate, magnesium sulfate and barium sulfate, and its specific gravity is 5%, 15%, 30%, 20%, 18%, 12%.

[...

Embodiment 3

[0025] A shield tail seal grease with excellent adhesion, the composition and mass ratio are as follows:

[0026] The quality of the base oil is 18 parts, and its composition and mass ratio are: a mixture of synthetic base oil, mineral base oil, and waste oil, and its proportion is 50%, 30%, and 20% respectively.

[0027] The reinforcing agent is 21 parts, and its composition and mass ratio are: cotton, asbestos, bamboo fiber, graphene and pp fiber, and their proportions are 10%, 15%, 25%, 20% and 30% respectively.

[0028] The viscosity index improver is 28 parts, and its composition and mass ratio are: coumarone, C9 petroleum resin, tackifying resin and alcohol polymer additives, and their proportions are 22%, 28%, 28% and 22% respectively .

[0029] The filler is 48 parts, and its composition and mass ratio are: graphite, magnesium carbonate, calcium carbonate, calcium sulfate, magnesium sulfate and barium sulfate, and its specific gravity is 5%, 18%, 25%, 20%, 20%, 12%. ...

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Abstract

The invention discloses shield tail sealing grease with excellent adhesion and a preparation method thereof. The shield tail sealing grease is prepared from the following ingredients in parts by mass: 12 to 18 parts of base oil, 18 to 25 parts of enhancer, 25 to 35 parts of viscosity index improver, 45 to 55 parts of filler and 15 to 20 parts of optimized lubricant, wherein the enhancer is prepared from the following ingredients in mass proportion: 7 to 12% of cotton, 12 to 20% of asbestos, 20 to 30% of bamboo fiber, 15 to 25% of graphene and 25 to 35% of pp fiber. The shield tail sealing grease disclosed by the invention has the characteristics of good viscosity, low cost, extremely high sealing performance, good lubrication, low volatility and high storage stability.

Description

technical field [0001] The invention relates to a sealing grease, in particular to a shield tail sealing grease with excellent adhesion and a preparation method thereof. Background technique [0002] At present, the construction of urban underground projects has generally adopted shield construction technology, and shield tail sealing grease is one of the most important sealing materials. Therefore, excellent shield tail sealing grease is particularly important in the shield tunnel construction method. Its high-efficiency sealing performance and good lubrication can effectively protect the shield tail, avoid collapse accidents, fully isolate groundwater and mud, and ensure the safety of shield tunnel construction. went well. Not only that, excellent shield tail seal oil can also effectively prevent corrosion of the shield machine and avoid unnecessary wear and tear. Therefore, shield tail seal grease must have good water pressure resistance, pumpability and adhesion. Howe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/04C10N30/02C10N30/06C10N40/34
CPCC10M169/048C10M2201/041C10M2201/062C10M2201/084C10M2203/1006C10M2205/022C10M2205/024C10M2205/028C10M2205/18C10M2207/401C10M2209/12C10M2221/00C10N2030/02C10N2030/06C10N2030/26C10N2040/34
Inventor 邢明阳杭一凡
Owner 苏州瀚固新材料科技有限公司
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