Modified TPU abrasive sealing materials, production and use thereof

A technology of sealing materials and elastomer materials, applied in chemical instruments and methods, other chemical processes, etc., can solve the problem of unsatisfactory corrosion resistance and aging resistance, unable to meet the use requirements of working conditions, poor elasticity and rigidity, etc. problems, to achieve the effects of chemical stability and environmental resistance, high elastic compression set, and excellent wear resistance.

Inactive Publication Date: 2006-08-16
ZHUZHOU HONGDA POLYMER MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Usually, the pump shaft is sealed with polytetrafluoroethylene (PTEE) or rubber as the sealing ring, but for some media (such as seawater), the existing sealing materials cannot meet the requirements. For pumps with seawater (such as: 150LCZ) -50 type) shaft sleeve, in the past, PTEE or rubber material was generally used
Although the friction coefficient of PTEE material is low, due to its poor elasticity and rigidity, it is easy to cause creep and damage under the working condition of high "PV" value.
If ordinary rubber (such as styrene-butadiene, nitrile, neoprene) has good elasticity, its corrosion resistance and aging resistance are not ideal. Can't apply
Therefore, the shaft sleeves made of the above two materials cannot meet the requirements of the working conditions on this type of water pump.

Method used

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  • Modified TPU abrasive sealing materials, production and use thereof
  • Modified TPU abrasive sealing materials, production and use thereof
  • Modified TPU abrasive sealing materials, production and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] TPU pellets are mixed with ABS (acrylonitrile / butadiene / styrene copolymer) pellets to prepare shaft sleeve seals for seawater pumps. TPU pellets and ABS pellets are used as main materials, and ultrafine powder is used as auxiliary materials. After blending, granulation, drying, and molding, a sealing material suitable for seawater pump shaft sleeves is produced. The composition and weight of the specific material are as follows:

[0041] TPU pellets 100 parts

[0042] ABS pellets 20 parts

[0043] Superfine powder 15 parts

[0044] The above two materials are prepared according to the following manufacturing process:

[0045]

[0046] 1. First, mix TPU pellets and ABS pellets according to the predetermined ratio;

[0047] 2. Add 15 parts of ultrafine (UF) micropowder to the ingredients;

[0048] 3. Blend and granulate TPU pellets and ABS pellets; the blending process conditions are:

[0049] The raw material is dried at 100°C;

[0050] Blending temperature I: 1...

Embodiment 2

[0064] TPU pellets are mixed with ABS (acrylonitrile / butadiene / styrene copolymer) pellets to prepare shaft sleeve seals for seawater pumps. TPU pellets and ABS pellets are used as main materials, and ultrafine powder is used as auxiliary materials. After blending, granulation, drying, and molding, a sealing material suitable for seawater pump shaft sleeves is produced. The composition and weight of the specific material are as follows:

[0065] TPU pellets 100 parts

[0066] ABS pellets 35 parts

[0067] 7 servings of superfine powder

[0068] The above two materials are prepared according to the following manufacturing process:

[0069]

[0070]1. First mix TPU pellets and ABS pellets according to the predetermined ratio;

[0071] 2. Add 7 parts of ultrafine (UF) micropowder to the ingredients of TPU pellets and ABS pellets;

[0072] 3. Blend and granulate TPU pellets and ABS pellets; the blending process conditions are:

[0073] (1) The raw material is dried at 100°C...

Embodiment 3

[0078] TPU pellets are mixed with ABS (acrylonitrile / butadiene / styrene copolymer) pellets to prepare shaft sleeve seals for seawater pumps. TPU pellets and ABS pellets are used as main materials, and ultrafine powder is used as auxiliary materials. After blending, granulation, drying, and molding, a sealing material suitable for seawater pump shaft sleeves is produced. The composition and weight of the specific material are as follows:

[0079] TPU pellets 100 parts

[0080] ABS pellets 25 parts

[0081] 9 servings of superfine powder

[0082] The above two materials are prepared according to the following manufacturing process:

[0083]

[0084] 1. First, mix TPU pellets and ABS pellets according to the predetermined ratio;

[0085] 2. Add 9 parts of ultrafine (UF) micropowder to the ingredients of TPU pellets and ABS pellets;

[0086] 3. Blend and granulate TPU pellets and ABS pellets; the blending process conditions are:

[0087] (1) The raw material is dried at 100...

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Abstract

A modified TPU abrasive sealing material, its production and use are disclosed. The process is carried out by adding TPU granular into ABS granular material, co-mixing, granulating, drying, molding and choosing. It consists of TPU granular material 100 proportion, ABS granular material 20-35 proportion and ultra-fine powder 0-15 proportion.

Description

technical field [0001] The modified TPU wear-resistant sealing material involved in the present invention is a high molecular polymer material obtained by blending several polymers. The present invention also relates to the preparation method and application of the above materials. Background technique [0002] Industrial pumps are important conveying tools for conveying medium in many industrial and mining sites. In order to seal and isolate the conveyed medium from the motor of the industrial pump in industrial pumps, the pump shaft needs to be sealed to prevent the conveying medium from entering the motor and damaging the motor. cause an accident. Usually, the pump shaft is sealed with polytetrafluoroethylene (PTEE) or rubber as the sealing ring, but for some media (such as seawater), the existing sealing materials cannot meet the requirements. For pumps with seawater (such as: 150LCZ) -50 type) shaft sleeve, in the past, PTEE or rubber material was generally used. Alt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/10C08L75/04C08L55/02
Inventor 孙生钧曾维楚
Owner ZHUZHOU HONGDA POLYMER MATERIALS
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