Publication:
Optimisation of eco-friendly binary binder system for powder injection moulding

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ISSN: 0032-5899 (Print)
ISSN: 1743-2901 (Online)
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2014-07
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Maney Publishing
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Abstract
In recent years, many efforts have been made to obtain more environmentally acceptable powder injection moulding processes. In this sense, the purpose of this study is to optimise an eco-binder based on polyethylene glycol (PEG) as a water soluble component and cellulose acetate butyrate (CAB) as a natural backbone polymer derived from cellulose for powder injection moulding of zirconium silicate powders until a solvent debinding stage. Four different feedstocks have been investigated. As well as, a volume fraction of PEG and CAB 70/30 (vol.-%) and a solid loading of 57.5 (vol.-%) were maintained,molecular weights of polymers were combined in order tominimize distortion during binder solvent extraction. Water solvent debinding was carried out at three temperatures stepwise during 5 h. As a result, efficient removal of the PEG as well as free defects samples were obtained after solvent debinding for binder systems based on low molecular weight of PEG.
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Water solvent debinding, Polyethylene glycol (PEG), Cellulose acetate butyrate (CAB), Zircon (zirconium silicate), Rheology, Powder injection moulding, Molecular weight
Bibliographic citation
Powder Metallurgy 57(3), July 2014, pp. 196-203