Improved reaction injection molded (RIM) polyurea polymers for fascia have been developed which provide significantly longer mold fill times while maintaining the fast cure times sought by molders. These polymers have been formulated for use with or without fillers. In either case (filled or unfilled), surface quality comparable to painted steel can be achieved. Material performance data such as heat sag, low temperature impact, coefficient of linear thermal expansion and moisture absorption are compared for RIM polyurea and a commercial thermoplastic copolyester. The data illustrate that RIM polyurea fascia can be processed on existing equipment. These polymers provide superior performance over polyurethane/urea and equal performance with an economic advantage over injection molded engineering thermoplastic.


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    Title :

    Improvements in RIM processing for automotive fascia


    Additional title:

    Verbesserungen beim Reaktionsspritzgießen von Kraftfahrzeug-Karosserieteilen


    Contributors:
    Schrott, B.D. (author) / Berg, J.W. (author)

    Published in:

    SAE-Papers ; Mar ; 1-5


    Publication date :

    1990


    Size :

    5 Seiten, 3 Bilder, 3 Tabellen, 6 Quellen



    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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