Copolymers of styrene and maleic anhydride have been around since the 40's. The addition of maleic anhydride to the polymer backbone has a two fold effect; firstly, it increases chain stiffness and secondly chain-chain interactions are increased. Both of these effects increase the glass transition temperature of the copolymer. A production technology has been developed which enables to generate copolymers containing a relatively high maleic anhydride content (typically up to 35 wt %) resulting in materials with glass transition temperatures up to 170 deg C. A technology has been discovered and patented whereby these high maleic anhydride containing copolymers can, under the influence of the right chemistry and temperatures (between 230 - 260 deg C), release carbon dioxide which is then used as the blowing agent to generate low density (intrinsically blown) foams.


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    Title :

    Intrinsically foamed SMA in interior trim applications


    Additional title:

    Selbstschäumendes Styrol Maleinsäureanhydrid für Innenausstattungen


    Contributors:
    Gill, J.S. (author) / Härtel, V. (author) / Schoot, H.G. (author)

    Published in:

    Publication date :

    1994


    Size :

    6 Seiten, 5 Bilder, 2 Tabellen



    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Intrinsically Foamed SMA in Interior Trim Applications

    Schoot, H. G. / Gill, J. S. / Härtel, V. | SAE Technical Papers | 1994


    Intrinsically foamed SMA in interior trim applications

    Gill,J.S. / Haertel,V. / Schoot,H.G. et al. | Automotive engineering | 1994


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