Researchers develop FR from used coffee grounds
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Nanyang Polytechnic, Singapore, has presented to media development of a flame retardant for epoxy resin produced from used coffee grounds, achieving UL94-HB rating for epoxy in lab tests (thickness not specified). It is not indicated what properties of the coffee are thought to give this result. As could be expected, the coffee waste gives a brown colour to the epoxy, which could limit applications.
“NYP team turns coffee waste into fire retardant”, 14 January 2019 https://www.channelnewsasia.com/news/singapore/nyp-team-turns-coffee-waste-into-fire-retardant-11121418