Nature Communications (Aug 2021)

Additive manufacturing of strong silica sand structures enabled by polyethyleneimine binder

  • Dustin B. Gilmer,
  • Lu Han,
  • Michelle L. Lehmann,
  • Derek H. Siddel,
  • Guang Yang,
  • Azhad U. Chowdhury,
  • Benjamin Doughty,
  • Amy M. Elliott,
  • Tomonori Saito

DOI
https://doi.org/10.1038/s41467-021-25463-0
Journal volume & issue
Vol. 12, no. 1
pp. 1 – 8

Abstract

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The limited strength of green parts have been a major hurdle in the Binder Jet Additive Manufacturing. Here the authors apply polyethyleneimine binder to print silica sand structures with double the flexural strength of green parts and 8-fold increase in the strength upon reactive infiltration.