Fluoropolymers are well-known for their use as frypan coating, and the following tests have been conducted to confirm their safety. A 25% portion of fine powdered PTFE was mixed in with food given to lab rats for 90 days. No poisoning or pathological/anatomical changes were noted. Fluoropolymers have chemical resistance, and even if ingested orally will not be broken down or react and generate poisonous substances, but can be pass through the body.
If it combusts or is thermally decomposed
PTFE, ETFE, PFA have a high level of non-flammability.
However when fluoropolymers are heated above their melting point they start to decompose and give off decomposition chemicals.
In the case of PTFE (melting point: 327℃), decomposition takes place at about 400℃ and decomposition chemicals can be detected.
Initially tetrafluoroethylene and hexafluoropropylene are detected, then perfluoro isobutylene is detected at about 480℃ and later carbonyl fluoride is detected at about 500℃.
These decomposition gases are toxic to some extent; in particular perfluoro isobutylene and carbonyl fluoride are highly toxic.
Although fluoropolymers are fire retardant, should a large scale fire take place, then toxic gases would be present and the necessary precautions should be taken.
Remarks regarding processing
Although there is little risk of such toxic decomposition gases at the usual processing temperature, it is known that a particle-like substance will be generated. This is considered to be the cause of the condition known as ""polymer fume fever"" to the human body.
The symptoms of the syndrome are similar to those of influenza. The heat decomposition gases from the fluoropolymers arise during processing whether it is short term or long term processing and so a high concentration of these gases may be evident. This is called ""polymer fume."" Although this condition has an incubation period of several hours and after some time the condition does gradually disappear, it disappears completely within 24 - 48 hours and no subsequent illness remains. In order to prevent polymer fume fever it is advisable to ensure suitable ventilation is installed in any processing environment.
Although natural ventilation may be adequate in many cases, depending on how the processing equipment is installed when handling small amounts of polymer, it is recommended that a local exhaust ventilation (LEV) system should be installed to guarantee complete protection from 'polymer fume fever'.
How should Fluon® ETFE Film be disposed of?
Fluoropolymers produce toxic gases when they are heated in high temperature. Please consult your local wastedisposal rules on how best to dispose these fluoropolymer product waste materials.
In what forms can we buy?
Master rolls, slit rolls, and flat sheets are available. Please ask us each grades' minimum order quantity.