As in the case of FEP in a multilayer system, PFA (perfluorinated alkoxide) coatings melt and flow during curing to give very low porosity films.
However, PFA offers additional advantages: a higher continuous operating temperature (up to 290°C at peak) and higher mechanical strength than PTFE or FEP. This combination of properties makes PFA ideally suited for a wide range of applications, especially those involving chemical resistance. PFA is available in both aqueous solution and powder form.
In summary, its main characteristics are as follows:
- Excellent non-stick properties
- Excellent chemical resistance
- Heat resistance (up to 260°C continuous, 290°C max.)
- Higher hardness than PTFE or FEP
- Dielectric or antistatic (with the addition of additives)
- Tools for welding operations (plates, jaws, wheels, etc.)
- Injection molds and forming tools
- All forms and utensils for industrial bakeries
- Grill plates
PFA is one of the components of the coating products of the brands Ilaflon™ (Ilag), Xylan™, Dykor™, etc.