BINDER HARDNESS AND PLASTICITY IN GRANULE COMPACTION.

C. W. Nies, Gary Lynn Messing

Research output: Chapter in Book/Report/Conference proceedingConference contribution

10 Scopus citations

Abstract

The effect of binder hardness on compaction reproducibility was studied by measuring dimensional variability, springback, and granule deformation of three spray-dried powders with polyvinyl alcohol (PVA), polyethylene glycol (PEG), plasticized polyvinyl alcohol, or acrylic wax binder systems. The last two binder systems with glass transition temperatures (T//g) of 25 and minus 17 degree C, respectively, were soft, whereas the PVA was hard when pressed at room temperature. It is demonstrated that the softer and more deformable binders result in more reproducible pressing with less springback. This is attributed to enhanced stress relaxation of the softer systems during pressing. Some pressing differences could not be solely attributed to T//g differences but are probably a result of mechanical property differences of the organic systems.

Original languageEnglish (US)
Title of host publicationAdvances in Ceramics
PublisherAmerican Ceramic Soc Inc
Pages58-66
Number of pages9
ISBN (Print)0916094561
StatePublished - Dec 1 1984

Publication series

NameAdvances in Ceramics
Volume9
ISSN (Print)0730-9546

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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