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Wear-resistant modified rubber sealing material

A sealing material and modified rubber technology, applied in the field of sealing materials, can solve problems such as restricting development, poor wear resistance, poor impact strength, etc., to improve mechanical properties, improve wear resistance and mechanical properties, and improve wear resistance performance effect

Pending Publication Date: 2021-03-19
ANHUI TENGLONG PUMP VALVE MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Because the rubber composite sealing material has excellent compression resilience, excellent creep relaxation resistance, excellent compatibility with the sealing surface and long-term pressure-resistant sealing performance, it has been widely used in pipelines, chemical pumps, and magnetic pumps. In the field of sealing, however, due to its poor wear resistance and poor impact strength, it seriously restricts its further development in the field of sealing

Method used

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  • Wear-resistant modified rubber sealing material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A wear-resistant modified rubber sealing material, made of the following raw materials in parts by weight:

[0020] Modified filler 10, natural rubber 80, polyvinyl alcohol 5, nitrile rubber 20, aramid fiber 5, stearic acid 5, sulfur 2.

[0021] Further, its preparation method is:

[0022] (1) Add the modified filler and natural rubber into the mixer, and mix to obtain the modified natural rubber;

[0023] (2) Mix the obtained modified natural rubber with polyvinyl alcohol, nitrile rubber, and aramid fiber at 110°C for 20 minutes, then add stearic acid and sulfur, continue mixing at 60°C for 3 minutes, and then extrude That's it.

[0024] Further, the aramid fibers are processed as follows: bake the aramid fibers at 30°C for 10 minutes, then spray a mixed solution of benzyl acetate, limonene, and baking soda, and stir the aramid fibers while spraying. , freeze the obtained aramid fiber at 0°C for 30 minutes, then soak it in warm water at 50°C, stir at 100 rpm for 13 ...

Embodiment 2

[0031] A wear-resistant modified rubber sealing material, made of the following raw materials in parts by weight:

[0032] Modified filler 12, natural rubber 100, polyvinyl alcohol 6, nitrile rubber 25, aramid fiber 7, stearic acid 6, sulfur 3.

[0033] Further, its preparation method is:

[0034] (1) Add the modified filler and natural rubber into the mixer, and mix to obtain the modified natural rubber;

[0035] (2) Mix the obtained modified natural rubber with polyvinyl alcohol, nitrile rubber, and aramid fiber at 115°C for 25 minutes, then add stearic acid and sulfur, continue mixing at 62°C for 4 minutes, and then extrude That's it.

[0036] Further, the aramid fibers are processed as follows: bake the aramid fibers at 35°C for 15 minutes, then spray a mixed solution of benzyl acetate, limonene, and baking soda, and stir the aramid fibers while spraying. , freeze the obtained aramid fiber at -3°C for 35 minutes, then soak it in warm water at 55°C, stir at 110 rpm for 1...

Embodiment 3

[0042] A wear-resistant modified rubber sealing material, made of the following raw materials in parts by weight:

[0043] Modified filler 15, natural rubber 120, polyvinyl alcohol 7, nitrile rubber 30, aramid fiber 10, stearic acid 8, sulfur 3.

[0044] Further, its preparation method is:

[0045] (1) Add the modified filler and natural rubber into the mixer, and mix to obtain the modified natural rubber;

[0046] (2) Mix the obtained modified natural rubber with polyvinyl alcohol, nitrile rubber, and aramid fiber at 120°C for 30 minutes, then add stearic acid and sulfur, continue to mix at 64°C for 1 minute, and then extrude That's it.

[0047] Further, the aramid fibers are processed as follows: bake the aramid fibers at 40°C for 20 minutes, then spray a mixed solution of benzyl acetate, limonene, and baking soda, and stir the aramid fibers while spraying. After spraying, , freeze the obtained aramid fibers at -5°C for 40 minutes, then soak them in warm water at 60°C, stir...

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Abstract

The invention discloses a wear-resistant modified rubber sealing material, and the prepared sealing material not only has excellent wear resistance, but also has good deformation resistance and tensile property, and is worth popularizing. A modified filler prepared from the modified vermiculite, diatomite, ethylenediamine and the like can greatly enhance the wear resistance of an obtained target material, has favorable compatibility in the rubber substrate, and enhances the tensile properties and compression properties of the material. Firstly, vermiculite is treated with tillering alkali, sodium bicarbonate and chitosan, the surface activity of vermiculite can be activated, the adsorption performance of vermiculite is enhanced, then the vermiculite is modified with aspartic acid, the vermiculite is rich in amino, carboxyl and hydroxyl, the reaction performance of the vermiculite and the compatibility and interface bonding performance of the vermiculite with a substrate are enhanced, and the mechanical property of the material is improved.

Description

technical field [0001] The invention belongs to the technical field of sealing materials, in particular to a wear-resistant modified rubber sealing material. Background technique [0002] Because the rubber composite sealing material has excellent compression resilience, excellent creep relaxation resistance, excellent compatibility with the sealing surface and long-term pressure-resistant sealing performance, it has been widely used in pipelines, chemical pumps, and magnetic pumps. In the field of sealing, however, due to its poor wear resistance and poor impact strength, it has seriously restricted its further development in the field of sealing. Contents of the invention [0003] In view of the above problems, the present invention aims to provide a wear-resistant modified rubber sealing material. [0004] The present invention is realized through the following technical solutions: [0005] A wear-resistant modified rubber sealing material, made of the following raw m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L7/00C08L9/02C08L29/04C08L77/10C08K9/04C08K9/02C08K9/00C08K3/34C08K7/26
CPCC08L7/00C08L2205/035C08L2205/16C08L9/02C08L29/04C08L77/10C08K9/08C08K9/04C08K9/02C08K9/00C08K3/34C08K7/26
Inventor 徐向远
Owner ANHUI TENGLONG PUMP VALVE MFG CO LTD