Parylene

The Parylene coating process is unique in the coating technology. The deposition process of polymers occurs at molecular level and provides:The first step is the vaporization of firm dimer. The dimer is heated to a temperature of 160°C and is dissipated in a gas. The gas is then pyrolysed (thermo chemical cleavage of organic compounds) to crack the dimer in his monomeric form. The monomeric gas is deposited in the deposition chamber under room temperature as a transparent polymeric film. The obtained coating thickness can vary with the application and can amount from 0,2 up to 100 µm pro run.

The Parylene coating is deposited under vacuum through condensation out of the gaseous phase as a non porous and transparent polymeric film on the substrate material. Practically every vacuum suitable substrate material such as metal, glass, paper, varnish, plastics, ferrite and silicon, even objects such as plants, insects or archaeological artifacts are coatable with Parylene.


Conform Parylene coatings are extremely thin, non porous polymeric coatings, which are used for many different purposes and are playing a decisive part at the protection of important components and component parts today. Parylene is an inert, hydrophobic, optical transparent, bio compatible, polymeric coating material with a wide spread industrial application spectrum. Parylene is today used in many different industrial branches.

Typical applications

  • conform coating of electronic components for harsh environmental conditions
  • dielectric coating (e.g. inductors, cores, magnets)
  • hydrophobic coating (e.g. bio medical tubes, catheter etc.)
  • reduction of friction (e.g. at guide wires at catheters)
  • barrier layers (e.g. filter, membranes, valves)
  • micro wave components, electronic technology
  • sensors in harsh conditions
  • enhancement of micro structures
  • corrosion protection for metalic surfaces
  • abrasion protection
  • protection of plastics, rubber etc. against environmental conditions
  • transparent protection for LED (e.g. illumination equipment for vehicles, illuminated panels etc.)

Equipment

Parylene coating system

The equipment spectrum reaches form serial equipment up to nonstandard equipment, systems of different sizes are available.


Service coating with Parylene C, N and D

From the connection of two identical molecules results one of the most important dimer from the big group of polymers that is used for conform Parylene coatings. Corresponding to the purity of the dimer and the equipment technology, you can produce an absolute conform coating with an optimal protection of the substrate material. 

Parylene C:
used for very good electric and phyical properties

Parylene N:
used for high dielectric and highest coating penetration

Parylene D:
used for high barrier layer and temperature protection