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A kind of tackifier for sealing grease, preparation method and application

A sealing grease and tackifier technology, which is applied in additives, petroleum industry, lubricating compositions, etc., can solve the problems of low temperature resistance and thickening effect of shield tail sealing grease, high production cost, poor low temperature resistance, etc. , to achieve the effect of solving the problem that the low temperature resistance performance and the thickening effect cannot be equal, the product performance is stable, and the low temperature resistance performance is improved

Active Publication Date: 2022-03-04
信达化工科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the production of shield tail grease, only polyisobutylene can be used to increase the viscosity of the grease, and other properties are useless for shield tail grease, which causes waste to a certain extent
However, the production cost of polyisobutylene is high, and high molecular polyisobutylene and low molecular polyisobutylene have different properties
Commonly used polymer polyisobutylene 2400 has poor low temperature resistance, while low molecular polyisobutylene with better low temperature resistance, such as 1300 and 950, has poor viscosity increasing effect, and the proportion of addition is large
These problems make the shield tail seal grease produced by the prior art unable to pay equal attention to low temperature resistance and thickening effect, and the production cost is extremely high

Method used

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  • A kind of tackifier for sealing grease, preparation method and application
  • A kind of tackifier for sealing grease, preparation method and application
  • A kind of tackifier for sealing grease, preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A kind of preparation method of tackifier for sealing grease is as follows:

[0029] First, put 10 # Pour 3000g of base oil into the reactor at a constant speed, turn on the stirring frequency of 10HZ, and heat up to 100°C;

[0030] Then, divide polymethacrylate FILB82390g and EVA200g into three parts on average, pour them into the reaction kettle three times, with an interval of 10 minutes each time, and then rapidly heat up to 130°C-160°C at a stirring frequency of 20HZ;

[0031] Then adjust the stirring frequency to 30HZ, and keep the temperature constant for 1.5 hours;

[0032] Finally, pour 45g of T551 into the reaction kettle at a constant speed, adjust the stirring frequency to 40HZ, and stir at a constant temperature for 1-2 hours to obtain a new type of thickener.

[0033] The kinematic viscosity and pour point of the prepared tackifier and polyisobutylene 2400 were compared, and the specific results are shown in Table 1.

[0034] Table 1. Performance parame...

Embodiment 2

[0037] A kind of preparation method of tackifier for sealing grease is as follows:

[0038] First, the 25 # Pour 3000g of base oil into the reactor at a constant speed, turn on the stirring frequency of 10HZ, and heat up to 100°C;

[0039] Then, divide the polymethacrylate FILB82470g and EVA210g into three parts, pour them into the reaction kettle three times, with an interval of 10 minutes each time, and then rapidly heat up to 130°C-160°C at a stirring frequency of 20HZ;

[0040] Then adjust the stirring frequency to 30HZ, and keep the temperature constant for 1 hour;

[0041] Finally, pour 70g of T551 into the reaction kettle at a constant speed, adjust the stirring frequency to 40HZ, and stir at a constant temperature for 2-3 hours to obtain a new type of thickening material.

[0042] The kinematic viscosity and pour point of the prepared tackifier and polyisobutylene 2400 were compared, and the specific results are shown in Table 2.

[0043] Table 2. Performance parame...

Embodiment 3

[0046] A kind of preparation method of tackifier for sealing grease is as follows:

[0047] First, pour 3000g of 650SN base oil into the reaction kettle at a constant speed, turn on the stirring frequency of 10HZ, and heat up to 100°C;

[0048] Then, divide polymethacrylate FILB72320g, polymethacrylate FILB8280g and EVA240g into three parts on average, and pour them into the reaction kettle three times, with an interval of 10 minutes each time, and then rapidly heat up to 130°C at a stirring frequency of 20HZ- 160°C;

[0049] Then adjust the stirring frequency to 30HZ, and keep the temperature constant for 1 hour;

[0050] Finally, pour 45g of diphenylamine into the reaction kettle at a constant speed, adjust the stirring frequency to 40HZ, and stir at a constant temperature for 2-3 hours to obtain a new type of thickening material.

[0051] The kinematic viscosity and pour point of the prepared tackifier and polyisobutylene 2400 were compared, and the specific results are s...

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Abstract

The invention discloses a tackifier for sealing grease, a preparation method and application thereof. The tackifier of the invention comprises 70-90 parts by weight of base oil, 1-3 parts by weight of a stabilizer, and 8-15 parts by weight of polymethacrylate part, EAV 5-7 parts by weight, and the stabilizer is one or both of T551 or diphenylamine. Utilizing the tackifier of the invention can improve the viscosity and low temperature resistance of shield tail sealing grease.

Description

technical field [0001] The invention relates to a viscosifying material, in particular to a viscosifying material used in the production of shield tail oil and a preparation method thereof. Background technique [0002] At present, my country is vigorously promoting the construction of subway, railway, highway, municipal, hydropower and other tunnel projects. The shield tunneling method has been widely used in tunnel engineering construction, and the main machine tool in the shield tunneling method construction is the shield machine. Shield tail sealing device must use shield tail sealing grease in order to prevent mud from intruding. One of the main indicators to evaluate the grease tightness of the shield tail seal is the adhesion. my country has a vast territory, and the temperature difference between the north and the south is large. In order to ensure the stability of the sealing performance of the shield tail seal grease in various places, the shield tail seal grease s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M169/06C10M161/00C10M167/00C10M177/00C10N40/34C10N50/10C10N30/08C10N30/10
CPCC10M169/06C10M161/00C10M167/00C10M177/00C10M2203/1013C10M2203/10C10M2209/084C10M2205/022C10M2209/062C10M2215/223C10M2215/064
Inventor 任彬
Owner 信达化工科技有限公司