Ceramic Injection Molding Using a Partially Water‐Soluble Binder System: Effect of Back‐Bone Polymers on the Process

Weber, Oxana; Hanemann, Thomas

doi:10.1002/9781118217528.ch5

Cited by 1 publication

(2 citation statements)

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“…Due to synthesis conditions, PVB can be described as a copolymer containing the aspired butyral group, an acetyl-as well as the highly polar hydroxy functionality. Both binders, PEG/PVB and PEG/PMMA, have been successfully applied for ceramics in FFF and injection molding, enabling crack-free and dense alumina or zirconia parts [12,13,[41][42][43][44]. In this work, PEG with different average molar weights M W (2000, 4000, 6000, 8000, 20,000 g/mol) (C. Roth GmbH Co KG, Karlsruhe, Germany) have been applied.…”

Section: Polar Feedstock Developmentmentioning

confidence: 99%

“…PEG/PMMA systems have been also introduced as a binder in PIM and material extrusion. The influence of three PMMAs with different M W and granule morphology on compounding, melt rheology and micro powder injection molding of zirconia and the final ceramic density was described in [44,46]. A binder, consisting of PEG (M W : 1500 g/mol) and a PMMA emulsion with SA as a surfactant, was used in metal injection molding of tungsten carbide/cobalt mixtures [47].…”

Section: Peg/pmma Binder Systemmentioning

confidence: 99%

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New Partially Water-Soluble Feedstocks for Additive Manufacturing of Ti6Al4V Parts by Material Extrusion

2023

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In this work, a process chain for the realization of dense Ti6Al4V parts via different material extrusion methods will be introduced applying eco-friendly partially water-soluble binder systems. In continuation of earlier research, polyethylene glycol (PEG) as a low molecular weight binder component was combined either with poly(vinylbutyral) (PVB) or with poly(methylmethacrylat) (PMMA) as a high molecular weight polymer and investigated with respect to their usability in FFF and FFD. The additional investigation of different surfactants’ impact on the rheological behaviour applying shear and oscillation rheology allowed for a final solid Ti6Al4V content of 60 vol%, which is sufficient to achieve after printing, debinding and thermal densification parts with densities better than 99% of the theoretical value. The requirements for usage in medical applications according to ASTM F2885-17 can be fulfilled depending on the processing conditions.

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