Počet záznamů: 1  

Rheological behaviour of polypropylene blends utilized in foaming process

  1. 1.
    SYSNO ASEP0361355
    Druh ASEPC - Konferenční příspěvek (mezinárodní konf.)
    Zařazení RIVD - Článek ve sborníku
    NázevRheological behaviour of polypropylene blends utilized in foaming process
    Tvůrce(i) Piyamanocha, P. (CZ)
    Sedláček, T. (CZ)
    Polášková, M. (CZ)
    Filip, Petr (UH-J) ORCID, RID, SAI
    Sáha, P. (CZ)
    Zdroj.dok.Latest Trends on Engineering Mechanics, Structures, Engineering Geology. - Athens : WSEAS, 2010 / Martin O. ; Zheng X. - ISSN 1792-4294 - ISBN 978-960-474-203-5
    Rozsah strans. 275-278
    Poč.str.4 s.
    Forma vydáníCD-ROM - CD-ROM
    AkceWSEAS International Conference on Engineering Mechanics, Structures, Engineering Geology /3./ (EMESEG '10), International Conference on Geography and Geology 2010 (WORLDGEO '10)
    Datum konání22.07.2010-24.07.2010
    Místo konáníCorfu
    ZeměGR - Řecko
    Typ akceWRD
    Jazyk dok.eng - angličtina
    Země vyd.GR - Řecko
    Klíč. slovapolypropylene foam ; rheology ; strain hardening ; foam morphology ; pressure dependent viscosity
    Vědní obor RIVBK - Mechanika tekutin
    CEZAV0Z20600510 - UH-J (2005-2011)
    UT WOS000288686900053
    AnotaceMorphological structure of PP foams represented by the size of the bubbles and bubbles density is affected by rheological properties of the source materials. Various blends of high molecular weight and high melt strength PP were prepared in a twin screw extruder, and foamed. Their shear flow behavior as well as strain hardening during elongation were found to be the factors of a key importance in foaming process optimization. Pressure dependent shear flow behavior of the tested materials was determined using capillary rheometer modified with backpressure chamber, and obtained dependencies of shear viscosity on pressure conditions were analyzed in order to further tailor blend compositions regarding their following use in foaming processes. It has been demonstrated that foam morphology might be controlled not only through degree of bubble coalescence and nucleation rate by the help of optimizing of material components ratio, but also via setting the proper processing conditions.
    PracovištěÚstav pro hydrodynamiku
    KontaktSoňa Hnilicová, hnilicova@ih.cas.cz, Tel.: 233 109 003
    Rok sběru2012
Počet záznamů: 1  

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