Conductive and antibacterial polytetrafluoroethylene composite thin film and manufacturing method thereof

A polytetrafluoroethylene, composite film technology, applied in membrane technology, separation method, semi-permeable membrane separation and other directions, can solve the problems of electric spark explosion or combustion, property damage, accumulation, etc., to eliminate static electricity, low cost, toughness Good results
CN102127243AInactive Publication Date: 2011-07-20NANJING UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
NANJING UNIV
Publication Date
2011-07-20
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a conductive and antibacterial polytetrafluoroethylene composite thin film, which is a polytetrafluoroethylene / conductive polymer / silver composite film prepared by using polytetrafluoroethylene thin film as a substrate, wetting the substrate with a wetting agent, using solution containing silver ions as oxidizer and an inorganic or organic acid as a doping agent and performing chemical polymerization of a conductive polymer monomer on the surface of the substrate. Besides filtering dust in air, the polytetrafluoroethylene / conductive polymer / silver composite film also has conductive and antibacterial functions; meanwhile, the conductivity of the composite thin film can reach over 2*10<-4>S / cm, the static electricity in the filtering process can be eliminated, and the stripping of dust and the long-term effective, continuous and stable operation of the filtering process can be realized more easily. The composite filtering film can be used in fields of air purification, air-solid separation and the like. The invention also discloses the manufacturing method of the conductive and antibacterial polytetrafluoroethylene composite thin film.
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Description

technical field

[0001] The invention relates to a conductive polymer composite material, in particular to a conductive and bactericidal double-functional polytetrafluoroethylene composite film and its preparation method. Background technique

[0002] Polytetrafluoroethylene (PTFE) film has excellent high and low temperature performance, outstanding chemical stability, good dielectric properties and hydrophobicity. It is an ideal membrane material for separating fine particles under some harsh conditions, and is widely used in dust removal in the pharmaceutical industry , Sterilization, filtration of dust and particles in the air, product purification and material recovery in chemical production, waterproof, breathable textiles and water treatment and other industries. Since PTFE film is an insulating material, the surface resistivity is greater than 10 16 Ω / sq, during gas-solid separation, dust particles will collide with and rub against the surface of the film to generate ...

Claims

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