a novel method for manufacturing of wood flour/pp composites with better fire retardancy and mechanical properties

this study was conducted to investigate the effects of applying methods andamount of ammonium polyphosphate (0, 2 and 4 wt%) on fire retardancy andmechanical properties of wood flour/polypropylene composites. the resultsshowed that addition of fire retardant improved the mechanical properties such astensile and flexural strengths and fire retardancy of composites. but by increasingof fire retardant impact strength decreased. the scanning electron microscopyobservation on the fracture surface of the composites indicated that fire retardanthad a uniform dispersion in the wood flour/pp composites. the observationsshowed that saturation of wood flour with fire retardant had a positive effect onmechanical properties and fire retardancy.