Ageing-resistant sealing material for chemical pump

A sealing material and anti-aging technology, applied in the field of chemical pump preparation, can solve the problems of performance deterioration, cross-linking, fracture, etc., and achieve the effect of improving anti-aging performance, improving incision and tearing resistance, and avoiding chain breakage.

Inactive Publication Date: 2017-10-24
ANHUI LUYUAN PUMP&VALVE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a commonly used sealing material, rubber is widely used, but the molecular structure of ordinary rubber sealing materials will undergo changes such as degradation, fracture, crystallization, mildew, and cross-linking, which will lead to deterioration of its performance. How to improve the aging resistance of rubber is technical issues to be resolved

Method used

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  • Ageing-resistant sealing material for chemical pump

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Effect test

Embodiment 1

[0013] An aging-resistant sealing material for chemical pumps, the rubber sealing material is made of the following components in parts by mass: 82 parts of hydrogenated nitrile rubber, 12 parts of wood powder / high-density polyethylene composite material, silane coupling agent 1.4 parts, 2.6 parts of diacetyl peroxide, 3 parts of polybutene, 5 parts of diatomaceous earth, 4 parts of white carbon black, 0.3 parts of polyethylene glycol, 1 part of sulfur;

[0014] The preparation method of the wood flour / high-density polyethylene composite material is as follows: 750 mesh wood flour is soaked in a succinic acid solution with a mass fraction of 3.8% for 2.5 hours, and then filtered, and the mass fraction is 5% in a sodium bicarbonate solution. Soak in water for 30 minutes, filter, soak in clean water for 10 minutes, and dry to constant weight. Add high-density polyethylene, dried wood powder, and maleic anhydride to a high-speed mixer at a mass ratio of 18:1.5:0.2. After mixing, ...

Embodiment 2

[0020] An aging-resistant sealing material for chemical pumps, the rubber sealing material is made of the following components in parts by mass: 88 parts of hydrogenated nitrile rubber, 16 parts of wood powder / high-density polyethylene composite material, silane coupling agent 1.8 parts, 3.0 parts of diacetyl peroxide, 5 parts of polybutene, 8 parts of diatomaceous earth, 6 parts of white carbon black, 0.6 parts of polyethylene glycol, 3 parts of sulfur;

[0021] The preparation method of the wood flour / high-density polyethylene composite material is as follows: 750 mesh wood flour is soaked in a succinic acid solution with a mass fraction of 3.8% for 2.5 hours, and then filtered, and the mass fraction is 5% in a sodium bicarbonate solution. Soak in water for 30 minutes, filter, soak in clean water for 10 minutes, and dry to constant weight. Add high-density polyethylene, dried wood powder, and maleic anhydride to a high-speed mixer at a mass ratio of 18:1.5:0.2. After mixing,...

Embodiment 3

[0027] An aging-resistant sealing material for chemical pumps, the rubber sealing material is made of the following components in parts by mass: 86 parts of hydrogenated nitrile rubber, 14 parts of wood powder / high-density polyethylene composite material, silane coupling agent 1.5 parts, 2.8 parts of diacetyl peroxide, 4 parts of polybutene, 7 parts of diatomaceous earth, 5 parts of white carbon black, 0.4 parts of polyethylene glycol, 2 parts of sulfur;

[0028] The preparation method of the wood flour / high-density polyethylene composite material is as follows: 750 mesh wood flour is soaked in a succinic acid solution with a mass fraction of 3.8% for 2.5 hours, and then filtered, and the mass fraction is 5% in a sodium bicarbonate solution. Soak in water for 30 minutes, filter, soak in clean water for 10 minutes, and dry to constant weight. Add high-density polyethylene, dried wood powder, and maleic anhydride to a high-speed mixer at a mass ratio of 18:1.5:0.2. After mixing,...

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Abstract

The invention discloses an ageing-resistant sealing material for a chemical pump. The rubber sealing material is prepared from the following components: hydrogenated butadiene-acrylonitrile rubber, a wood flour/high density polyethylene composite material, a silane coupling agent, diacetyl peroxide, polybutylene, diatomite, white carbon black, polyethylene glycol and sulfur. According to the ageing-resistant sealing material for the chemical pump disclosed by the invention, the butadiene-acrylonitrile rubber serves as a main ingredient, the wood flour/high density polyethylene composite material prepared by the invention serves as an auxiliary material, and synergistic treatment is performed by virtue of the added silane coupling agent, so that the ageing resistance of the prepared sealing material is greatly improved, particularly oxidation resistance and notch tear resistance under multiple deformation conditions are greatly improved compared with those of the ordinary butadiene-acrylonitrile rubber sealing material.

Description

technical field [0001] The invention belongs to the technical field of chemical pump preparation, and in particular relates to an aging-resistant sealing material for chemical pumps. Background technique [0002] Chemical pumps are a general term for mechanical chemical pumps used to transport liquids and increase their pressure. They can meet the requirements of high temperature resistance, low temperature resistance, corrosion resistance, wear resistance, no leakage or less leakage, and pumps that can transport liquids in a critical state. These pumps are collectively referred to as chemical pumps. The application of sealing materials in chemical pumps is extremely important. Good sealing can prevent chemical pumps from leaking and avoid environmental pollution. The environment in which sealing materials are used in chemical pumps is relatively harsh, so the performance requirements for sealing materials in this application are relatively high. As a commonly used sealing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L15/00C08L23/06C08L97/02C08L23/20C08L71/02C08L59/00C08K13/04C08K7/26C08K3/36C08K3/34C08K5/14
CPCC08L15/005C08L2201/08C08L2205/02C08L2205/035C08L2312/00C08L23/06C08L97/02C08L23/20C08L71/02C08L59/00C08K13/04C08K7/26C08K3/36C08K3/346C08K5/14
Inventor 凤元军
Owner ANHUI LUYUAN PUMP&VALVE CO LTD
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