TY - JOUR A1 - Schartel, Bernhard A1 - Schmaucks, Gerd T1 - Flame retardancy synergism in polymers through different inert fillers’ geometry JF - Polymer Engineering and Science N2 - Low amounts (<7.5 wt%) of organically modified layered silicate (LS) as well as large amounts (>10 wt%) of spherical amorphous SiO2 (sSiO2) has been used successfully as adjuvants in commercial polymeric materials flame retarded with metal hydroxide. The combination of LS and SiO2 is investigated in different thermoplastics with respect to their fire behavior, particular to overcome the restrictions in maximum and minimum filler contents know for the single additives. The aim was to check the potential of combinations of the inert fillers in absence of a real fire retardant. The combination of LS and sSiO2 harbors the potential for flame retardancy effects close to superposition or even synergy, due to an improved structure of the fire residue. LS-sSiO2 combinations are proposed to work as adjuvants superior to LS and sSiO2 in flame retarded polymeric materials. KW - Flame retardance KW - Nanocomposites KW - Organoclay KW - Silicones KW - Fillers PY - 2017 DO - https://doi.org/10.1002/pen.24485 SN - 0032-3888 SN - 1548-2634 VL - 57 IS - 10 SP - 1099 EP - 1109 PB - SPE AN - OPUS4-42573 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -