Thermal Properties and Fire Retardancy of Polypropylene/Wood Flour Composites Containing Eco-friendly Flame Retardants

다국어 초록 (Multilingual Abstract)

Thermal properties and the flame retardancy of polypropylene/wood flour (PP-WF) composite were improved byadding aluminum hydrogen phosphonate (AHP) and triphenyl phosphate (TPP) flame retardants. PP-WF compositescontaining 30 wt% of AHP and 30 wt% of TPP achieved UL-94 HB standard with the horizontal burning rate of 20.8 mm/min and of 11.5 mm/min, respectively. Thermal properties of PP-WF composite with and without flame retardant, as well asthe interaction between PP-WF and flame retardant were investigated through TGA analysis. The flame retardant mechanismis mainly in condensed phase for AHP and in gas phase for TPP. The residual char after the decomposition of PP-WF/AHPcomposite was analyzed by FTIR to understand how the formation of char affected on the flame retardancy and thermalstability PP-WF composite.

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