Why Use Polyurethane (UR) Conformal Coatings?

Polyurethane coatings are one of the second most popular choices for conformal coating applications after acrylic conformal coatings.

Urethane materials are available in many different forms including single component, two component, UV curable, and water borne systems. As a group, all UR coatings provide excellent humidity. What a key feature of UR mateirals is offering chemical resistance; this makes them one of the more popular coatings when it comes to protection of the critical operation of your printed circuit boards (PCBs) in a chemically aggressive environment.

On the downside, urethanes can have a few more issues such as longer cure schedules, harder to rework due to chemical resistance, higher costs due to higher cost of resins and certain issues with Health & Safety when soldering through the coatings.

If you would like to know more the different conformal coating types, polyurethane conformal coatings or other products and services offered and supported by SCH Technologies, please do not hesitate to contact us

Telephone: +44 1226 249019

Email: sales@schservices.com

Click Contact Us to send us your requests.


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About Dr Lee Hitchens

Dr Hitchens has been working in the electronics industry and the area of conformal coatings for over 25 years in various areas including sales and technical support. He has also been training people for almost the same amount of time in all areas of conformal coating whether that is materials & equipment selection, process development or troubleshooting to help them solve their particular problem. Recently, he decided that the industry needed a specific place where all of the useful knowledge on conformal coatings could be collated for users to find easily and use in their own production process. So, Nexus was born and he began the Nexus eBook project.

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