Akademik Veri Yönetim Sistemi
ChemistrySelect, cilt.8, sa.41, 2023 (SCI-Expanded, Scopus)
Natural flammability properties of acrylonitrile butadiene styrene (ABS) seriously limit the use of ABS polymers in industries. Improving the flammability performance of ABS by using halogenated additives has been a very common method in the past. However, with increasing environmental awareness, the use of halogen-containing additives has been severely limited over time. Therefore, we aimed to use halogen-free flame-retardant additives in our study to improve the flame-retardant properties of ABS. ABS-based composites containing 20, 25, 30 % aluminum diethyl-phosphinate (AlPi) and ammonium polyphosphate (APP) halogen-free flame-retardant additives by weight, were prepared using a twin-screw extruder. V0 rating according to UL 94 standard for the thickness of 1.5 mm, limiting oxygen index (LOI) value higher than 28 %, and glow wire flammability index of 960 °C were aimed in this study. To improve the LOI values of flame-retardant ABS composites, pentaerythritol (PER), zinc borate (ZB), and magnesium hydroxide were used. The highest LOI value was obtained to be 28.1 % by using 12.5 wt.% AlPi, 12.5 wt.% APP, 5 wt.% PER and 3 wt.% ZB. The effect of flame retardants on mechanical properties (flexural and tensile properties), impact properties (Izod and Charpy-notched impact strength), thermal properties, melt flow index, and morphology (scanning electron microscopy) of ABS were also examined.