Sarlink low hardness extrusion grades have the potential to replace thermoset EPDM foam materials in many extrusion applications in the automotive industry as well in the building and construction industry. Extreme low compression deflection forces in combination with excellent elastic recovery are typical characteristics for EPDM foamed products. These new Sarlink grades (thermoplastic with EPDM particles embedded in a polypropylene matrix) are an addition to the existing Sarlink 5700 series, which is characterized by its fully optimized and superb UV-resistance and improved fogging properties, combined with excellent elastic and sealing performance. What makes this new Sarlink series unique is its extreme low hardness of 25 to 35 Shore A in combination with excellent processing, such as good collapse resistance and extremely good flow to obtain good surface finish. Another great advantage is that these low durometer Sarlink grades can be co-extruded in combination with higher hardness grades to create complex sealing systems. Focusing on performance, these new Sarlink grades show low compression set and deflection forces in combination with good relaxation behaviour. These are typical characteristics to obtain excellent elastic and thus sealing performance. Looking at the advantages of the new low hardness Sarlink extrusion grades these products offer new potentials compared to EPDM foam materials, especially in the automotive industry. Many EPDM foamed products are used in combination with spray coatings to obtain specific functional properties. The industry considers the use of spray coating systems as an environmental questionable system in combination with relatively high cost. These new Sarlink grades can be co-extruded in combination with the Sarlink proprietary slip coatings. The combination of both material groups could result in a reduction of production costs in a more environmental friendly way (the application of the slip coating occurs in the same production process as the product itself). Besides the reduction of the coefficient of friction and improvement of abrasion resistance, these material combinations can also result in easier assembling of parts.


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    Titel :

    New TPVS in competition with EPDM sponge - a low hardness range for extrusion applications


    Beteiligte:
    Vroomen, Ger (Autor:in) / Joly, Gert (Autor:in) / Wang, Yundong (Autor:in)


    Erscheinungsdatum :

    2011


    Format / Umfang :

    8 Seiten, 2 Bilder, 3 Tabellen, 11 Quellen



    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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