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
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