Polymer flammability corrosive gases

Fluoropolymers also low flammability. The fully fluorinated polymer polytetrafluoroethylene, for example, burns only in 95% oxygen under the test conditions of LOI. The burning, however, produces a highly toxic and corrosive gas hydrogen fluoride. 

Corrosion Rates of ACI Heat-Resistant Castings Alloys in Air Corrosion Rates for ACI Heat-Resistant Castings Alloys in Flue Gas Flammability of Polymers Flammability of Fiberglass Reinforced Plastics... 

In the case of a fire, the development of smoke is of equal importance to the flammability of the plastic. The important factors are density, toxicity and the corrosive effect of the smoke gases. Carbon black increases the density of the smoke gases, the main toxic elements of which are incompletely oxidised carbon, usually in the form of carbon monoxide gas. Crosslinked thermosets generally produce less smoke than most thermoplastics, rather, they tend to carbonise. The polymers that are highly resistant to heat will keep their aromatic or heterocyclic ring structure in the case of fire and carbonise into networks similar to graphite. 

---