Unlock instant, AI-driven research and patent intelligence for your innovation.

Shield tail sealing grease with high water resistance as well as preparation method and application thereof

A shield tail seal, water-based technology, applied in the petroleum industry, lubricating composition, etc., can solve the problems of poor construction effect and high cost, and achieve good pumpability

Inactive Publication Date: 2021-03-12
信达化工科技有限公司
View PDF4 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems that the above-mentioned shield tail sealing grease has poor construction effect for special working conditions such as ultra-high water pressure composite formations, and there are few existing researches on shield tail sealing grease formula optimization and performance characterization, and the cost is high. The invention provides a highly water-resistant shield tail seal grease and its preparation method and application

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Shield tail sealing grease with high water resistance as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0029] Such as figure 1 Shown, a kind of preparation method of high water resistance shield tail sealing grease, prepare above-mentioned high water resistance shield tail sealing grease, its method comprises the following steps:

[0030] S1: Add the base oil into the stirring tank and stir, turn on the forward rotation stirring, and raise the temperature to 40-70°C;

[0031] S2: Slowly add the additive into the stirring tank, and continue stirring for 3-5 minutes;

[0032] S3: Add the tackifier into the stirring tank at a constant speed, continue stirring for 4-5 minutes, and mix well;

[0033] S4: Switch to reverse stirring mode, slowly add synthetic fibers into the stirring tank, and continue stirring for 1-2 minutes, so that each raw material can be fully mixed evenly, effectively avoiding lumps;

[0034] S5: Turn on the forward rotation stirring mode, add the solid powder into the stirring tank at a uniform speed, and continue stirring for 40-45 minutes to obtain a highl...

Embodiment 1

[0037] Pour 600g of 10# base oil into the stirring tank at a constant speed, turn on the normal rotation and stir, and raise the temperature to 55°C. Then, slowly pour 60g of treated bentonite into the stirring tank, continue stirring for 3-5min, then pour 430g of polyisobutylene and 100g of alkyd resin into the stirring tank at a constant speed and continue stirring for 5min, fully mix evenly, and then switch to In the reverse stirring mode, slowly add 60g of synthetic fiber into the stirring tank, and stir for 1-2min; finally, turn on the forward stirring mode, pour 75g of mica powder and 1350g of calcium powder into the stirring tank at a uniform speed, and keep stirring for 40min, that is, high Water-resistant tail seal grease.

Embodiment 2

[0039]Pour 430g of rapeseed oil into the stirring kettle at a constant speed, and turn on the normal rotation stirring, and raise the temperature to 40°C. Then, slowly pour 100g of treated bentonite into the stirring tank, continue stirring for 3-5min, then pour 320g of polyisobutylene and 230g of butyl rubber into the stirring tank at a constant speed and continue stirring for 5min, mix well, and then switch to In the reverse stirring mode, slowly add 55g of synthetic fibers into the stirring tank, and stir for 1-2min; finally, turn on the forward stirring mode, pour 75g of mica powder and 1350g of calcium powder into the stirring tank at a uniform speed, and keep stirring for 40min to obtain high resistance Water-based tail seal grease.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
cone penetrationaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the technical field of shield tail sealing grease, and particularly relates to shield tail sealing grease with high water resistance as well as a preparation method and application thereof. The shield tail sealing grease with high water resistance is prepared from the following raw materials in parts by weight: 10-25 parts of base oil, 20-30 parts of tackifier, 2-5 parts of additive, 2-4 parts of fiber and 37-57 parts of solid powder, and the base oil comprises one or more of 10# base oil, rapeseed oil and 650SN, so that the sealing grease can meet the water pressure of 5-6bar (taking grouting pressure as reference); and the buried depth is below 60 meters, so that the shield tunneling machine meets all shield diameter specifications, the requirements of customerscan be fundamentally met, and huge market influence and economic benefits are generated.

Description

technical field [0001] The invention belongs to the technical field of shield tail sealing grease, and in particular relates to a shield tail sealing grease with high water resistance and a preparation method and application thereof. Background technique [0002] Since the beginning of this century, my country has vigorously developed national infrastructure projects, such as subways, highways, railways, municipal water supply and drainage and sewage pipelines, hydropower, tunnels passing through mountains, rivers and lakes, etc., and the shield method is widely used in these constructions. During the tunneling process of the shield machine, there is a gap between the shield shell and the outer wall of the segment. In order to prevent water, mud and sand outside the shield shell from entering the shield, the gap between the shield tail and the segment must be sealed. There is friction between the shield tail brush and the segment. If the friction force is too large, it will ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/00C10M177/00C10N30/12C10N40/34
CPCC10M169/00C10M177/00C10M2201/103C10M2205/026C10M2207/401C10M2209/102C10M2205/024C10M2201/062
Inventor 任彬
Owner 信达化工科技有限公司