The barrier properties of fluoropolymers exposed to ethanol-containing fuel blends were investigated using the permeation cup, weight loss method. More specifically, permeation constant data for Fuel C, CE10, CE15, CE22, CE50, CE85 and ethanol through fluoropolymers; THV, PVDF and FEP were measured at 20, 40 and 60°C. Additional techniques such as the measurement of vapor pressure of fuel-ethanol blends using a permeation cup equipped with a pressure transducer are discussed. Vapor pressures for fuel blends were also derived using equations of state such as UNIQUAC, NRTL and Peng-Robinson models. The weight changes and volume changes of fluoropolymers in ethanol-containing fuels were measured. Finally, the crystallinity index and glass transition temperature of fluoropolymers were also measured.


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    Title :

    The Permeation Effect of Ethanol-containing Fuels on Fluoropolymers


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    JSAE/SAE International Fuels & Lubricants Meeting ; 2007



    Publication date :

    2007-07-23




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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