In pinfa Newsletter n°63, page 5, summarising Wang et al. 2016 we indicated that with 5% PIN flame retardant loading (a combination of phosphorus and nitrogen FR and graphene) UL9-V0 (3mm thickness) fire performance was achieved.
It should be clarified that this was achieved for the solid PLA (polylactic acid). For PLA foams, UL-94 V0 was not tested, but linear burning rate was reduced by around 25% at 15% FR plus 1.5% graphene loading. We would like to thank Daniel Vadas for bringing this error to our attention