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        • 产品名称: 聚四氟乙烯隔膜纸
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        MTI provides 0.2 µm pore size PTFE memebrane for Lithium Air Battery research.

        Whatman®  PTFE membranes are chemically stable and inert. They are suitable for applications involving aggressive organic solvents, strong acids, and alkalis. PTFE membranes are particularly suitable for preparing samples for HPLC analysis. The hydrophobic nature of the membrane also has applications for air and gas sterilization. The membrane is laminated onto a nonwoven polypropylene support web for improved strength and handling and can be used at temperatures up to 120ºC.

        Chemically stable and inert
        PTFE is the membrane of choice for use with aggressive solvents, liquids, and gases that can attack other membranes. It is resistant to most acids, alkalis, and solvents.

        Applications
        One of the major applications for the PTFE  membrane is the clarification of corrosives, solvents, and aggressive fluids. This includes the important requirement in HPLC analysis for sample filtration where any solid particles can cause permanent damage to the column. The 0.5 µm pore size is normally used. Air and gas sterilization make use of the hydrophobic characteristics of PTFE membranes and their ability to stop aqueous aerosols. Usual pore sizes are 0.2 µm and 0.5 µm. Sterile venting of vacuum manifolds, fermentation vessels, and sterile filtrate tanks and containers utilize PTFE 0.2 µm membranes.

        WTP and TE membrane ranges
        WTP membranes use a polypropylene grid as the support material whereas the TE range use a randomly arranged polypropylene support material.


        Specification

         

        Item Thickness
        (µm)
        Diameter
        (mm)
        Pore Size
        (um)
        Porosity
        (%)
        Flow rate
        Δp = 0.9 bar
        (s/100 ml/12.5 cm2)
        Liquid flow rate
        @ 10 psi vacuum
        (ml/min/cm2)
        Air flow rate
        Δp = 3 mbar
        (s/100 ml)
        Air flow rate
        @ 10 psi vacuum
        (l/min/cm2)
        Bubble point
        (bar)
        Max. temp.
        (οC)
        TE 240 47 0.2  n/a 24 n/a 70 n/a 1.29 100
        WTP 130 47 0.2 72 n/a 61 n/a 4.5 0.89 120

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