TY - CONF A1 - Matzen, Melissa A1 - Marti, J. A1 - OƱate, E. A1 - Idelsohn, S. A1 - Schartel, Bernhard T1 - Advanced Experiments and Particle Finite Element Modelling on Dripping V-0 Polypropylene N2 - Melt flow and dripping of polymeric materials can be both beneficial and detrimental during fire. In the vertical UL 94 test, a well adjusted dripping behaviour of flame retarded polypropylene (PP-FR) resulted in a non-flaming dripping V-0 classification. Melt flow and dripping reduce flame spread and even result in extinction, as mass and heat are removed from the actual pyrolysis zone. For the polymer samples and their drops collected in UL 94, the decomposition and viscosity was investigated. Particle finite element method (PFEM) was successfully used to simulate the material behaviour in the UL 94 test. The competition between gasification, combustion and melt dripping is evaluated. T2 - Fire and Materials 2017, 15th International Conference CY - San Francisco, CA, USA DA - 06.02.2017 KW - Particle finite element method KW - Flammability KW - UL 94 V0 dripping KW - Radical generator KW - Polypropylene PY - 2017 AN - OPUS4-39444 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Matzen, Melissa A1 - Marti, J. M. A1 - Onate, E. A1 - Idelsohn, S. A1 - Schartel, Bernhard T1 - Particle finite element modelling and advanced experiments on dripping V-0 polypropylene N2 - Melt flow and dripping of polymeric materials can be both beneficial and detrimental during fire. It reduces flame spread and result in extinction, as mass and heat are removed from the actual pyrolysis zone. In contrast, melt flow and dripping can provide an additional ignition source, additional process of flame spread and has the potential to start a pool fire. In the vertical UL 94 test, a well adjusted dripping behaviour of flame retarded polypropylene (PP-FR) resulted in a non-flaming dripping V-0 classification. For the polymer samples and their drops collected in UL 94, the decomposition and viscosity was investigated. Particle finite element method (PFEM) was successfully used to simulate the material behaviour in the UL 94 test and increased the understanding of the complex behaviour of polymeric materials during fire. T2 - Fire and Materials, 15th International Conference CY - San Francisco, CA, USA DA - 06.02.2017 KW - V0 dripping KW - Melt flow KW - Flammability KW - Flame retardant KW - Radical generator KW - Dripping agent KW - Polypropylene KW - Particle Finite Element Modelling PY - 2017 SP - 57 EP - 62 PB - Interscience Communication CY - Bromley, UK AN - OPUS4-39443 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -