Eggshell powder and alumina nanoparticles tested as epoxy fillers in lab
Source: Journal of Reinforced Plastics and Composites, "Influence of Al2O3 nanoparticles and eggshell powder on epoxy hybrid composite properties", published 11 November 2026.
What the source says
Five laboratory epoxy LY556 hybrids were made by hand lay-up with Al2O3 nanoparticles and raw or heat-treated eggshell powder. The 3 wt% Al2O3 plus 3 wt% heat-treated eggshell mix had the best tensile and flexural results; raw eggshell resisted flame better.
Allbase view
A small hand lay-up lab study of five epoxy hybrids, with no service or scale-up data. Treated eggshell filler is an interesting low-cost idea, but nothing to act on yet for anyone buying epoxy systems.
Our reading of the paper, not a statement from the source. Checked against the paper on 12 Nov 2026.
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