The parylene coating process in detail
Course of a parylene coating process
The process takes place in three stages:
1.Evaporation Dipara-xylylene dimer
2. Pyrolysis Para-xylylene monomer
3. Condensation Polypara-xylylene polymer
As a result of the pyrolysis of the gas, the next step is aimed at splitting the monomeric form of the dimer.
Finally, the gas is separated at room temperature inside a coating chamber.
This leaves a transparent and also very thin and homogeneous polymer film on the surfaces.
Deposition rates > 0.007 mm/h
Layer thicknesses 0.1 to 100 µm
Primers and dimers (raw materials: C, N, D, F, AF4)