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Preparation method of material for high temperature magnetic drive pump isolation casing

A magnetic pump and high-temperature technology, which is applied in the field of preparation of high-temperature magnetic pump isolation sleeve materials, can solve problems such as poor dimensional stability, impact on service life, and difficulty in molding, and achieve enhanced impact strength and tensile strength, and improved dimensional stability. The effect of prolonging the service life

Inactive Publication Date: 2018-04-06
安徽江南泵阀集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The high-temperature magnetic pump is a kind of non-contact torque transmission through a magnetic drive (magnetic coupling), so that the static seal replaces the dynamic seal, so that the pump is completely leak-free. It consists of three parts: a self-priming pump, a magnetic drive, and a motor. , the key component of the magnetic drive is composed of an outer magnetic rotor, an inner magnetic rotor and a non-magnetic isolation sleeve. In the prior art, the isolation sleeve has a large linear expansion coefficient, poor dimensional stability, poor thermal conductivity, easy cold flow, and difficult to form. , so that there are defects in the use process, which will affect its service life. Therefore, further research on the isolation sleeve material is required

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A preparation method for a high-temperature magnetic pump isolation sleeve material, comprising the following steps, each raw material component by weight:

[0016] (1) Add 4 parts of carbon nanotubes into xylene, ultrasonically disperse for 40 minutes, then add 28 parts of liquid polyisoprene rubber, stir and dissolve and continue ultrasonication for 20 minutes to remove xylene in the mixture, and the resulting mixture Dry at 68°C for 2.5 hours to obtain intermediate material A for later use;

[0017] (2) Mix intermediate material A with modified calcium magnesium powder equivalent to 8% of its weight, add water with a mass concentration of carboxymethyl cellulose of 0.5%, heat to 92°C, and stir at 700 rpm for 25 minutes, After completion, filter and dry to obtain intermediate material B and refrigerate at a temperature of 4°C for later use;

[0018] (3) Mix the spare intermediate material B with the pulverized polytetrafluoroethylene material equivalent to 22 times i...

Embodiment 2

[0021] A preparation method for a high-temperature magnetic pump isolation sleeve material, comprising the following steps, each raw material component by weight:

[0022] (1) Add 2 parts of carbon nanotubes to xylene, ultrasonically disperse for 45 minutes, then add 30 parts of liquid polyisoprene rubber, stir and dissolve, and continue ultrasonication for 15 minutes to remove xylene in the mixture, and the resulting mixture Dry at 70°C for 2 hours to obtain intermediate material A for later use;

[0023] (2) Mix intermediate material A with modified calcium magnesium powder equivalent to 6% of its weight, add water with a mass concentration of sodium polyacrylate of 0.2%, heat to 90°C, and stir at 800 rpm for 20 minutes. After completion Filter and dry to obtain the intermediate material B and refrigerate at a temperature of 6°C for later use;

[0024] (3) Mix the spare intermediate material B with the pulverized polytetrafluoroethylene material equivalent to 24 times its w...

Embodiment 3

[0026] A preparation method for a high-temperature magnetic pump isolation sleeve material, comprising the following steps, each raw material component by weight:

[0027] (1) Add 6 parts of carbon nanotubes to xylene, ultrasonically disperse for 35 minutes, then add 25 parts of liquid polyisoprene rubber, stir and dissolve, continue ultrasonication for 15-25 minutes, remove xylene in the mixture, and The resulting mixture was dried at 65°C for 3 hours to obtain intermediate material A for use;

[0028] (2) Mix intermediate material A with modified calcium magnesium powder equivalent to 10% of its weight, add water with a mass concentration of sodium polyacrylate of 0.8%, heat to 95°C, and stir at 600 rpm for 30 minutes. After completion Filter and dry to obtain the intermediate material B and refrigerate at a temperature of 3°C for later use;

[0029] (3) Mix the spare intermediate material B with the pulverized polytetrafluoroethylene material equivalent to 20 times its wei...

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Abstract

The invention belongs to the technical field of high temperature magnetic drive pump accessory processing, and particularly relates to a preparation method of a material for a high temperature magnetic drive pump isolation casing. The method comprises the steps of carbon nano tube and liquid polyisoprene rubber mixing treatment, modified calcium-magnesium powder high-temperature modification treatment and melt extrusion of a polytetrafluoroethylene material. Compared with the prior art, the method has the advantages that carbon nano tube is adopted for performing liquid polyisoprene rubber treatment, an intermediate material A of a net crosslinked structure can be obtained, and the material can be enhanced; then, modified calcium-magnesium powder high-temperature treatment is performed, the impact strength and the extension strength of the product can be effectively enhanced, meanwhile, the structure of the polytetrafluoroethylene material can be fined, when the material works under the high-temperature condition, the high chemical stability can be kept, meanwhile, the size stability can be improved, the phenomenon that the chemical performance is affected due to repeated deformation of the material is avoided, and the service life of the high temperature magnetic drive pump isolation casing is prolonged.

Description

technical field [0001] The invention belongs to the technical field of high-temperature magnetic pump accessory processing, and in particular relates to a preparation method of a material for a high-temperature magnetic pump isolation sleeve. Background technique [0002] The high-temperature magnetic pump is a kind of non-contact torque transmission through a magnetic drive (magnetic coupling), so that the static seal replaces the dynamic seal, so that the pump is completely leak-free. It consists of three parts: a self-priming pump, a magnetic drive, and a motor. , the key component of the magnetic drive is composed of an outer magnetic rotor, an inner magnetic rotor and a non-magnetic isolation sleeve. In the prior art, the isolation sleeve has a large linear expansion coefficient, poor dimensional stability, poor thermal conductivity, easy cold flow, and difficult to form. , so that there are defects in the use process, which will affect its service life. Therefore, furt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/18C08L9/00C08L1/28C08L33/02C08K13/04C08K7/24C08K3/22C08K3/36
CPCC08L27/18C08K2003/2206C08K2003/222C08K2003/2227C08K2003/2272C08L2201/08C08L2205/03C08L9/00C08L1/286C08K13/04C08K7/24C08K3/22C08K3/36C08L33/02
Inventor 吴同茂吴敏吴瑞斌戴高岩
Owner 安徽江南泵阀集团有限公司