Title: Three kinds of high polymer micropore membranes of electret and process of manufacture of them
Application Number: 85100859 Application Date: 1985.04.01
Publication Number: 1001537 Publication Date: 1986.07.09
Approval Pub. Date: Granted Pub. Date: 1989.03.01
International Classifi-cation: A61N1/10,H01G7/02
Applicant(s) Name: Beijing Polytechnical College Address:
Inventor(s) Name:
Attorney & Agent: GU YINGFENG
Abstract:
     The invention provides three kinds of high polymer micropore membranes of electret. They are micropore membrane made of polytetrafuuoroethylene, super fine cellulose membrane made of polypropylene and micnopore membrane made of nitrocellulose. Electrostatic field of the micropore membranes is rather high and can be maintained longly. It is fixed to electret by line corona or point corona, the field strength necessary to fix membrane to electret is -2000 volts/cm-15000 volts/cm or -2000 volts/cm -12000 volts/cm respectively. The membranes can crue six kinds of diseases respectively, treatment efficiency is up to 90%. Its cost is cheap. It is convenient to use it, it can be used for filter of gas rising filter efficiency and richening oxigen.
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