Parylene Engineering
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Parylene Engineering provides Parylene Conformal Coating Services and consultation for several industries including, industrial applications, aerospace, avionics, commercial, medical, and the defense electronics industries. Parylene Engineering was established in 1995 as a parylene service provider serving the aerospace industry.

Since then, the company has grown to serve the Aerospace, Space, Medical, and commercial industry. The parylene coating process involves several Mil specs including MIL-I-46058C, Typically, the parylene monomer is deposited on substrates as a gaseous molecule that polymerizes in a vacuum environment.

The end result is a pin-hole'-free parylene film. The film itself possesses various mechanical, thermal, and dialectical properties. A Poly-para-Xylylene coating film formed by the chemical vapor deposition (CVD) process.
Services
Parylene Engineering has been the leading service provider of Parylene custom conformal coating services for more than 14 years.
Many customers search for a coating solution to extend the life of a part or to solve a particular issue that they are having with a part.
To evaluate parylene coating as a solution, customers often have sample parts coated.
This is called an Engineering Run.
There are 2 types of engineering runs.
Normally new customers begin by discussing their application with our sales/engineering department, so that we can understand the nature of your application and can recommend if Parylene will be successful.
Parylene is the generic name for the poly-para-xylylenes.
These materials form linear, highly-crystalline polymers but can be usefully produced only as coatings and films.
The most commonly used is Parylene C, the mono-chloro substituted compound.
Parylene N, the un-substituted compound, has better high-frequency dielectric properties, better penetrating power for coating the bore of very small diameter tubes, and is often preferred in medical applications.
Parylene D, the di-chloro-substituted compound, has better high temperature endurance.
Due to the physical properties of Parylene and the method of deposition, Parylene conformal coating forms a pin-hole free film on the subject substrate.
Therefore, it provides an excellent barrier to both liquids and gases.
The table below lists the permeability characteristics of the Parylenes and also shows typical values for other types of conformal coatings.
Moisture vapor permeability values have been measured at thickness' below 0.1 micron.
Normalized to equivalent thickness, the values are the same for all thicknesses.
Uniform thickness and true conformality - the established process guarantees precise control of thickness and inherent uniformity, especially critical in microelectronics applications; no bridging, thin-outs, puddlings, run-offs which are common problem with other coating materials.
Since it is based on a gas, Parylene can penetrate spaces which typical conventional coatings can not cover: small recesses, crevices and holes and even the edges and the inside spaces of very fine tubes.
Superior barrier properties - Parylene provides exceptional corrosion protection from moisture, salt spray, corrosive vapors and other hostile environments.
Parylene Engineering offers two commercial Parylene variants, each having its own unique electrical and physical properties.
Contact Parylene Engineering for assistance with material selection as well as determination of film thickness and substrate preparation requirements.
Differs chemically, having a chlorine atom on the benzene ring that results in a useful combination of electrical and physical properties including particularly low moisture and gas permeability.
This version deposits on substrates faster is than Parylene N, with a consequent reduction in crevice penetration activity.
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