VSE knjižnice (vzajemna bibliografsko-kataložna baza podatkov COBIB.SI)
  • Improving powder injection moulding by modifying binder viscosity through different molecular weight variations [Elektronski vir]
    Gonzalez-Gutierrez, Joamin ...
    Powder injection moulding (PIM) is a versatile technology for manufacturing small metal or ceramic parts withcomplex geometry. Invariably, PIM consists of 4 stages: feedstock preparation, injection ... moulding, debindingand sintering. Debinding is the most time consuming step and in an effort to reduce debinding times, catalyticdebinding was introduced, which rely on the sublimation ability of Polyoxymethylene (POM). Besides fastdebinding, POM provides excellent mechanical strength to the moulded part. One major problem of POM-basedbinders is their high viscosity that can complicate the injection moulding process. This paper examines thepossibility of lowering the viscosity of POM without affecting its mechanical strength by changing its averagemolecular weight (Mw). It was observed that POMs viscosity increases with MW at a faster rate than impacttoughness and it is suggested that a Mw of around 24000 g/mol provides the most appropriate combination ofstrength and fluidity.
    Vir: Proceedings [Elektronski vir] (Str. 434-438)
    Vrsta gradiva - prispevek na konferenci
    Leto - 2013
    Jezik - angleški
    COBISS.SI-ID - 13138459

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