Non-symmetrical fluorinated side-groups substituted on a phosphorus-nitrogen polymer backbone yield elastomeric materials with properties that cannot be achieved with conventional carbon monomer polymers. Properties, including low glass-transition temperatures, high melt-transition temperatures, chemical resistance, fuels and hydrocarbon resistance, low compression set and high modulus, are typical of these elastomers. A fluorinated polyphosphazene (ASTM designation 'FZ') product was commercialized for aerospace use within the U.S. Department of Defence. The material was successfully used in elastomer applications requiring O-rings, T-rings, rotor seals and other military and armoured vehicle applications. At the end of the cold war, the sole supplier withdrew FZ from the market citing high costs. Fundamental research continued with gram quantities being produced on a laboratory scale. However, commercial development was impeded due to the unavailability of commercial quantities of phosphazenes and phosphazene starting materials. Materials Science Technology, Inc. (MST) has developed a process and constructed a plant that is currently producing 15000 kg/yr of FZ gum rubber under the trademark PNF.


    Access

    Access via TIB

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Phosphazene elastomer use in defence and aerospace


    Contributors:


    Publication date :

    2010


    Size :

    8 Seiten, 5 Bilder, 3 Tabellen



    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Phosphazene elastomer use in defence and aerospace

    Goodwin, B. / Stiles, R.E. / Rapra Technology Limited | British Library Conference Proceedings | 2010


    Planet Aerospace : aeronautics, space, defence

    TIBKAT | Nr. 1.2000(Nov./Dez.) - 5.2001(Okt./Dez.); 2002 - 2008,1(Jan./März); damit Ersch. eingest.


    Achievements in Aerospace and Defence

    Emerald Group Publishing | 1991


    Phosphazene Polymers Containing Carborane

    Fewell, L. L. / Parker, J. A. / Basi, R. J. | NTRS | 1986


    New aerospace priorities for Germany's defence

    Szandar, Alexander | Online Contents | 1996