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Influence of capillary die geometry on wall slip of highly filled powder injection molding compounds

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    SYSNO ASEP0481288
    Document TypeJ - Journal Article
    R&D Document TypeJournal Article
    Subsidiary JČlánek ve WOS
    TitleInfluence of capillary die geometry on wall slip of highly filled powder injection molding compounds
    Author(s) Sanétrník, D. (CZ)
    Hausnerová, B. (CZ)
    Filip, Petr (UH-J) ORCID, RID, SAI
    Hnátková, E. (CZ)
    Source TitlePowder Technology. - : Elsevier - ISSN 0032-5910
    Roč. 325, February (2018), s. 615-619
    Number of pages5 s.
    Publication formPrint - P
    Languageeng - English
    CountryCH - Switzerland
    Keywordspowder injection molding ; highly filled polymer ; wall slip ; capillary entrance angle
    Subject RIVBK - Fluid Dynamics
    OECD categoryFluids and plasma physics (including surface physics)
    R&D ProjectsGA17-26808S GA ČR - Czech Science Foundation (CSF)
    Institutional supportUH-J - RVO:67985874
    UT WOS000425476700063
    EID SCOPUS85037108002
    DOI10.1016/j.powtec.2017.11.041
    AnnotationUneven distribution of solid particles contained in the feedstocks used in the process of powder injection molding (PIM) is observed in the close vicinity of the walls. A particle-free thin layer adjacent to the walls is formed by the binder only and is characterized by so-called wall slip. Wall slip is a key to successful modeling of injection molding step of PIM. For its determination we used capillary rheometers equipped with the dies of different entrance angles applied to four PIM feedstocks. The entrance angle has been found to be a crucial parameter to intercept wall slip. Conical dies are more suitable to obtain reliable slip velocity values of highly filled compounds than capillaries having plane entrance, which are used in the majority of studies.
    WorkplaceInstitute of Hydrodynamics
    ContactSoňa Hnilicová, hnilicova@ih.cas.cz, Tel.: 233 109 003
    Year of Publishing2019
Number of the records: 1  

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