This is an overview of Parylene conformal coatings in plain English. This superior ultra-thin, pinhole-free polymer coating provides a number of high-value surface treatment properties such as excellent moisture, chemical, and dielectric barrier properties, thermal and UV stability, and dry-film lubricity.
The Versatility of Parylene Coating
Chemistry may not have been everyone’s strongpoint in high school, but the chemical processes both in nature and in manufacturing can greatly affect our everyday lives, even when we’re not aware of it. We’d like to highlight another behind-the-scenes hero of modern day manufacturing – Parylene coating.
How It Works
Developed over 40 years ago, Parylene is considered to be one of the best protective coatings on the market. Because the coating is applied as a gas instead of as a liquid, the coating is able to conform to any shape, completely covering the product in a uniform thickness. Any parts of the product that are not to be coated are simply masked off prior to the room temperature coating process.
In addition to providing a moisture barrier, Parylene is also highly resistant to corrosion and chemicals. It also has excellent electrical properties, which makes it desirable for use in electronic devices and components such as circuit boards and sensors.
Uses and Applications
Parylene’s performance under extreme temperatures and conditions has been advantageous to the aerospace and defense industries. Radar, and missile guidance systems and satellite devices are just a few of the applications for the coating. Due to its optical clarity, printed numbers, markings and other elements can be seen for identification, reference or quality control.
In the medical industry, Parylene is well suited for implants, prosthetics, needles, catheters and more. Parylene coating’s biocompatible and moisture-resistant properties make it ideal for countless medical applications.
Almost any type of surface can be covered with Parylene, including metal, plastic, ceramics, glass, resin – and even paper.
How to Find Out More
If you have a product that could benefit from Parylene coating, Specialty Coating Systems has 11 worldwide locations to handle your engineering and production requirements. To discuss your electronic coating needs with an applications specialist, contact us online or call +1.317.451.8549.