Tannic acid is found in tree bark and other plant materials and can be recovered from bio-based industry waste streams. It was tested as a flame retardant additive in DGEBA epoxy at 0.1 – 8% (and neat epoxy), by mixing into the epoxy before hardening and cur-ing....
A melamine salt of pentaerythritol phosphate showed to be an effective PIN FR in polypropylene, with less toxic fire gases than neat PP. Phosphoric acid, pentaerythritol and melamine were react-ed at 4:1:3 ratio, then extruder mixed into polypropylene at 0 – 25%. With...
Zinc oxide coated cellulose nanocrystals, sourced from wood, were tested in 4mm HDPE sheets. Zinc oxide is widely used in for example sunscreens. The zinc oxide (50%) – cellulose (50%) nano-particles were ground to a particle size < 44 µm, then screw extruded into...
Mineral PIN FRs prove effective to improve fire safety of insulation boards made from non-reusable plant fibre wastes. Sodium carbonate decahydroxide [Na2CO3.10H2O] and alumina trihydroxide [Al2O.3H2O] were tested as PIN FRs, at 0 – 30% loading, in thermal insulation...
Layer-by-layer Laponite, alginate and chitosan achieved self-extinguishing and halved smoke production from flexible polyu-rethane foam. Researchers first activated 25mm thick foam samples in polyacrylic acid, then soaked for five minutes consecutively in aqueous...
