Easier Sold Than Done: Halogen-Free Multi-Component Flame Retardants for SEBS-Copolymers (PPT)

摘要

Halogen-free flame retardancy of styrene-ethylene-butylene-sty-rene-copolymers (SEBS)-eopolymers is a most challenging task. The high effective heat of combustion of the volatiles and the char yield close to zero demand considerable action that is extremely hard to achieve with acceptable filling levels. Further SEBS-components py-rolysing show hardly any tendency to interact with flame retardant in the condensed phase. Halogen-free multi-component flame retardant approaches are presented including different phosphorus flame retar-dants, mineral fillers and the combination with different adjuvants. OI, UL-94 and cone calorimetry are used to analyze the fire behavior. A few promising approaches are worked out.