PEKK

PEKK (PolyEtherKetoneKetone) is one of the highest-performance polymers in world.  PEKK is inherently flame retardant with a UL V0 rating based on it's chemical structure and requires no additional additives to achieve this flame rating.  

Print Carbon Fiber PEKK with Gearbox™ HT2 High-Temp 3D Printer.  Check it out HERE.