Pure polyfluortetraethylene gradient overlay film filter material with high intensity

A polytetrafluoroethylene and polytetrafluoroethylene cloth technology is applied in the field of high-strength pure polytetrafluoroethylene gradient membrane filter materials, which can solve the problem of high and low temperature resistance, poor corrosion resistance and oxidation resistance, and shorten the filter material. service life, accelerated wear of filter materials, etc., to achieve the effect of good peelability, stable size, and reduced energy consumption for ash cleaning

Active Publication Date: 2009-06-24
LINGQI ENVIRONMENTAL PROTECTION EQUIP FACTORY SHANGHAI
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Problems solved by technology

[0002] The currently used filter materials are often easy to absorb moisture and accumulate dust during the filtration process, which not only increases the frequency of dust removal, greatly increases the operating energy consumption, but also accelerates the wear of the filter material, greatly shortening the service life of the filter material. Moreover, the existing filter materials are poor in high and low temperature resistance, corrosion resistance and oxidation resistance, and are easily hydrolyzed

Method used

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  • Pure polyfluortetraethylene gradient overlay film filter material with high intensity

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Embodiment Construction

[0008] The high-strength pure polytetrafluoroethylene gradient film-coated filter material of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0009] refer to figure 1 , the high-strength pure polytetrafluoroethylene gradient membrane filter material of the invention consists of the described polytetrafluoroethylene film 4, the described polytetrafluoroethylene superfine fiber layer 3, the described polytetrafluoroethylene thick fiber Layer 2 and the base cloth 1 are formed.

[0010] The base cloth 1 is a polytetrafluoroethylene base cloth, and the polytetrafluoroethylene thick fiber layer 2 and the polytetrafluoroethylene superfine fiber layer 3 are sequentially needle-punched on the polytetrafluoroethylene base cloth. On the cloth 1, the polytetrafluoroethylene film 4 is coated on the upper surface of the polytetrafluoroethylene superfine fiber layer 3, and the micropore diameter of the polytetrafluoroethylene ...

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PUM

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Abstract

The invention relates to a high-strength pure polytetrafluoroethylene gradient coating filter material, which comprises base cloth, and is characterized in that the base cloth is a polytetrafluoroethylene base cloth; a polytetrafluoroethylene coarse fiber layer and a polytetrafluoroethylene superfine fiber layer are pricked on the polytetrafluoroethylene base cloth; and a polytetrafluoroethylene film is coated on the polytetrafluoroethylene superfine fiber layer. The high-strength pure polytetrafluoroethylene gradient coating filter material has the characteristics of high and low temperature resistance, high acid and alkaline resistance, high humidity resistance, good chemical stability, high filtration efficiency, quick filtration speed, long service life and the like, can be used in various bag-type dusters for flue gas purification, dust removal, dust treatment and material recovery, and has wide application scope.

Description

Technical field: [0001] The invention relates to a filter material, in particular to a high-strength pure polytetrafluoroethylene gradient membrane filter material. Background technique: [0002] The currently used filter materials are often easy to absorb moisture and accumulate dust during the filtration process, which not only increases the frequency of dust removal, greatly increases the operating energy consumption, but also accelerates the wear of the filter material, greatly shortening the service life of the filter material. Moreover, the existing filter materials are poor in high and low temperature resistance, corrosion resistance and oxidation resistance, and are also easily hydrolyzed. Invention content: [0003] The purpose of the present invention is to provide an improved high-strength pure polytetrafluoroethylene gradient film-coated filter material, which can not only effectively make the filter material high and low temperature resistant, high acid and al...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D39/16
Inventor 黄斌香黄磊
Owner LINGQI ENVIRONMENTAL PROTECTION EQUIP FACTORY SHANGHAI
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