Parylene is a commercial name for polymers which belong to a unique chemical family: poly-para-Xylylene.
In contrast to conventional coatings, this technique uses gaseous monomers which are polymerized and deposited on substrates as a pinhole-free and stress-free solid film with an outstanding combination of physical, thermal, electrical, barrier and bio-compatible properties.
Due to its unique characteristics, poly-Xylylene has been used in many applications that demand a coating with maximum performance and reliability, including biomedical and electronics. Parylene meets USP Class VI and 510(k) requirements for biomedical devices and Mil-I-46085C/IPC-CC-830B specifications for conformal coatings.
The following represents a brief list of the main features of poly-p-Xylylene:
High reliability – Suitable for medical, electronics and military applications
Particle retention – Upgrades electronic and mechanical devices
True conformality – Uniform thickness on all surfaces
Out-gassing – Virtually none
Light weight – compared to other coatings
Solvent resistance – Resistant to almost all solvents
Wide temperature range – From -200 C to +200 C
Outstanding barrier – Very low permeability to moisture and gases
Stress-free coatings – Sensitive circuitry unchanged by coating
Acid and base resistance – Resists attack from exposure
Radiation resistance – Suitable for sterilization & space applications
Fungus and bacteria resistance – Excellent
Low coefficient of friction – Very good lubricity
Dielectric properties – Extremely high dielectric strength
Transparency – thin films are of optical clarity
Mechanical – High tensile and yield strength
Some Applications of Parylene
Fiber Optic Components
For more information on Parylene Coating, please contact us.