In this paper we will describe some of the material features required to formulate a suitable thermoplastic polyolefine (TPO) slush molding composition and the important material properties necessary for molding and meeting performance requirements. Melt compounding was performed using a Theysohn Model TSK TT20 Twin Screw Laboratory Extruder. Nearly all blend compositions involved low melting point materials with relatively low melt viscosities. Slush moldable TPO compositions have been formulated to possess the required balance of low melt viscosity under the low shear rates expected during rotational molding. Low temperature ductility is imparted by suitable choice of a low Tg polyolefin elastomer that forms a dispersed phase in an essentially semi-crystalline matrix. Different elastomers can be used to change the handling characteristics of the skin, however, the composition dependent rheology of the formulations can have an adverse effect on melt viscosity. A thermodynamic analysis of miscibility in some of these blends has also been described which is used to explain experimentally observed morphological, rheological, and thermal properties of the compositions investigated and also used to indicate how appropriate materials may be selected.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen


    Exportieren, teilen und zitieren



    Titel :

    Thermoplastic polyolefins (TPO) for slush molding of interior skins: materials and processing requirements


    Weitere Titelangaben:

    Thermoplastische Polyolefine für das Schleuderformen von Oberflächenschichten in der Innenausstattung: Werkstoffe und Verarbeitungsbedingungen


    Beteiligte:
    Ellis, Thomas S. (Autor:in) / Kakarala, Norm (Autor:in) / Patel, Sandip (Autor:in)


    Erscheinungsdatum :

    2005


    Format / Umfang :

    23 Seiten, 18 Bilder, 3 Tabellen, 16 Quellen


    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    "Espolex™": Novel TPO Compound for Powder Slush Molded Auto Interior Skins

    Sugimoto, H. / Imai, A. / Society of Plastics Engineers | British Library Conference Proceedings | 1999


    THERMOPLASTIC POLYURETHANE POWDER FOR POWDER SLUSH MOLDING

    Europäisches Patentamt | 2020

    Freier Zugriff

    THERMOPLASTIC POLYURETHANE POWDER FOR POWDER SLUSH MOLDING

    KIM BYUNG MIN / JEON SUNG MO / SONG EUN HO et al. | Europäisches Patentamt | 2019

    Freier Zugriff


    Development of Thermoplastic Polyurethane (TPU) Powder Slush Material for Interior Parts

    Oomori, Hideki / Ukai, Junzo / Nomura, Mahito et al. | SAE Technical Papers | 2002