Parylene coating systemParylene P35
Special edition
The Parylene P35 from Diener electronic is considered a special model with a chamber volume of approximately 35 litres.
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Parylene is the short name for the poly(para-xylylene) group of polymers. These polymers consist of variously substituted para-xylylenes. The starting material for the coating is dimers. These are molecular compounds consisting of two identical subunits, known as monomers.
Properties and advantages:
Parylene coatings offer a wide range of benefits. Parylene …
- are completely conformal: i.e. they conform even to complex substrate contours such as sharp edges, bores or blind holes
- are pinhole-free even at film thicknesses as low as approx. 0.5 µm.
- are chemically insoluble and resistant to a wide range of chemicals.
- exhibit excellent barrier properties against moisture and chemicals.
- have a high electrical breakdown strength.
- possess dry-lubricating properties (low coefficient of friction).
- are hydrophobic: contact angle of H₂O between 92° and 98°
- are transparent to between 90 and 96 per cent in the visible wavelength range (depending on the type).
- are biocompatible: Parylene types C and N can be deposited, which can be certified to USP Class VI, ISO 10993 and FDA standards.
Chamber volume
Depending on the application rate, Diener electronic can offer you a suitable chamber size. Chamber capacities range from approximately 6 to 300 litres.
cooling trap
The cold traps required for parylene coating are manufactured using liquid nitrogen or, on request, with an electromechanical cooler. Furthermore, Diener electronic’s 30 years of experience helps to ensure that the most suitable cold trap is selected.
Everything in motion
To ensure that the surfaces are completely coated, the workpieces must remain in motion during the treatment. With Parylene P35, the workpiece carrier moves in a carousel-likemotion.
Heating
To minimise unwanted deposits, the heating system is designed to suit the chamber volume. The larger the chamber volume, the larger the heating system required. Unfortunately, it is not possible to prevent deposits entirely.
Technical data
Housing dimensions
Standalone
Vacuum chamber
Stainless steel, Hinged door
⌀ 250 mm x
H 450 mm; Volume approx. 35 liters
Workpiece holder / Part fixture
Carousel, Stainless steel
⌀ 220 mm x
H 400 mm
Coating material
Parylene N, Parylene C, Parylene D, Parylene F-VT4
Possible coating thickness
0.05 - 50.00 μm
Pyrolysis unit
2.00 kW, max. 850 °C
Cold trap
Liquid nitrogen
Electro-mechanical cooler
Power supply
400 V | 32 A
Technical changes reserved.
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FAQ Frequently Asked Questions
How thick is a parylene coating produced using the Parylene P35 system?
Depending on your requirements, we at Diener electronic recommend applying a parylene layer with a thickness of between approx. 0.1 and 50 micrometres using the Parylene P35 system. A pinhole-free protective layer is achieved from 1 to 2 micrometres.
Are exhaust air filters necessary?
Yes, all systems must be connected to a proper exhaust system, regardless of the type of gas used! Nitrogen oxides, exhaust gases, fine oil mist (from oil pumps), etc. are produced, which must not be inhaled; furthermore, the gases are often acidic, meaning they promote the rusting of surrounding parts, machinery and equipment.
