42950 2017 eng 1883 1890 12 66 article Wiley 1 -- -- -- A siloxane compound (MVC) and a bi-group phosphaphenanthrene/triazine compound (TGD) were employed in epoxy thermosets to explore high-efficiency flame retardant systems. With only 1wt% MVC and 3wt% TGD, an epoxy thermoset passed UL 94 V-0 rating test and achieved a limiting oxygen index value of 34.0%, exhibiting an excellent flame retardant effect. The MVC/TGD system not only decreased the peak value of heat release rate and effective heat of combustion but also imparted an improved charring ability to thermosets, thereby outstandingly reducing the flammability of 1%MVC/3%TGD/EP. Compared with the fire performance of 4%TGD/EP and 4%MVC/EP, the MVC/TGD system showed an obvious flame retardant synergistic effect, mainly depending on the general improvement of flame inhibition, charring and barrier effects of the thermoset during combustion. Evolved gas analysis combinedwith condensed-phase pyrolysis product Analysis jointly revealed the details of the changed pyrolysis mode. Polymer International 0959-8103 1097-0126 10.1002/pi.5466 01.12.2017 Y. Qiu Volker Wachtendorf Patrick Klack L. Qian Z. Liu Bernhard Schartel eng uncontrolled Flame retardant eng uncontrolled Epoxy resin eng uncontrolled Synergy eng uncontrolled Siloxane eng uncontrolled DOPO eng uncontrolled Triazine Ingenieurbau Verlagsliteratur Datei im Netzwerk der BAM verfügbar ("Closed Access")