Tremendous interest has been generated in the application of polyurea RIM for exterior body panels. Since polyureas are more thermally stable than polyurethanes, they offer distortion-free parts including even on-line painted body panels.New technology has been developed recently to improve the reaction profile of polyurea formulations, enabling the molding of large surface area panels on conventional RIM injection units.The dimensional stability required for exterior body panels (especially the low CLTE) requires reinforcement with glass or mineral fillers. However, new applications have been somewhat restricted by limitations of the reinforcement technology: excessive orientation effect of properties; low impact strength; or distinctness-of-image (DOI) values lower than painted sheet metal.This paper summarizes the improvements provided by Bayflex 150 DOI (high DOI polyurea), a new multiple-release polyurea RRIM formulation which incorporates novel reinforcement technology. This composite offers an extremely isotropic property profile, improved impact performance, and distinctness-of-image values of coated parts essentially identical to those of painted sheet metal.


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    Title :

    Polyurea RIM - The Choice for Automotive Body Panel Applications


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    SAE International Congress and Exposition ; 1989



    Publication date :

    1989-02-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Polyurea RIM - The choice for automotive body panel applications

    Sanns, F. jun. / Taylor, R.P. / Kazubski, J.R. | Tema Archive | 1989


    Polyurea RIM - The choice for automotive body panel applications

    Sanns,F. / Taylor,R.P. / Kazubski,J.R. et al. | Automotive engineering | 1989


    Polyurea RIM in exterior body panel applications

    Primeaux,D.J. / Grigsby,R.A. / Rice,D.M. et al. | Automotive engineering | 1988


    Polyurea RRIM for automotive body panels

    Hemphill, J. | Tema Archive | 1988


    Polyurea RIM in exterior body panel applications

    Primeaux, D.J. / Grigsby, R.A. jun. / Rice, D.M. | Tema Archive | 1988