Models to predict the viscosity of metal injection molding feedstock materials as function of their formulation

Gonzalez-Gutierrez, Joamin (avtor), Duretek, Ivica (avtor), Kukla, Christian (avtor), Poljšak, Andreja (avtor), Bek, Marko (avtor), Emri, Igor (avtor), Holzer, Clemens (avtor)

The viscosity of feedstock materials is directly related to its processability during injection molding; therefore, being able to predict the viscosity of feedstock materials based on the individual properties of their components can greatly facilitate the formulation of these materials to tailor properties to improve their processability. Many empirical and semi-empirical models are available in the literature that can be used to predict the viscosity of polymeric blends and concentrated suspensions as a function of their formulation; these models can partly be used also for metal injection molding binders and feedstock materials. Among all available models, we made a narrow selection and used only simple models that do not require knowledge of molecular weight or density and have parameters with physical background. In this paper, we investigated the applicability of several of these models for two types of feedstock materials each one with different binder composition and powder loading. For each material, an optimal model was found, but each model was different; therefore, there is not a universal model that fits both materials investigated, which puts under question the underlying physical meaning of these models.

• Jezik: Angleški jezik
• Ključne besede: feedstock, metal injection molding, models, polypropylene, polyoxymethylene, polymer blends, powder content, rheology, stainless steel, viscosity
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FS - Fakulteta za strojništvo
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2016
• Št. strani: 17 str.
• Številčenje: Vol. 6, iss. 6, art. 129
• PID: 20.500.12556/RUL-105548
• UDK: 531(045)
• ISSN pri članku: 2075-4701
• DOI: 10.3390/met6060129
• COBISS.SI-ID: 14692379
• Datum objave v RUL: 05.12.2018

Gradivo je del revije

• Naslov: Metals
• Skrajšan naslov: Metals
• Založnik: MDPI AG
• ISSN: 2075-4701
• COBISS.SI-ID: 15976214

Licence

• Licenca: CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by/4.0/deed.sl
• Opis: To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.
• Začetek licenciranja: 01.06.2016

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: surovina, injekcijsko brizganje kovinskega prahu, polipropilen, polioksimetilen, polimerne mešanice, vsebnost prahu, reologija, nerjaveče jeklo, viskoznost