Polymer encapsulation - protective coating for electronic components
In everyday life, we are constantly in contact with electronic components. These are exposed to a wide variety of stresses. In order for sensitive electronics to meet these requirements, potting compounds made of polymers are often used. A course of the German Plastics Center (SKZ) shows how these are applied and used.
Polymer encapsulation for electronic components (Photo: Fraunhofer IFAM)
German Plastics Center (SKZ) and Fraunhofer IFAM collaborate on course
A smartwatch is our faithful everyday companion and personal trainer for sporty balance from hectic everyday life. However, in order for it to work and for us to reliably see when our pulse rate skyrockets, many sensors are necessary. These electronics must not fail and, of course, we also want to record swimming in a triathlon. Thus, waterproofness of the electronics would also be desirable. This short example shows how important protection is for electronic components, which now play a central role in all devices.
Electronic components are therefore encapsulated with polymers for protection. This provides a protective jacket and, in addition to mechanical protection, also ensures optimised heat dissipation and protects against water and other media. Epoxy resins, silicones, polyurethanes or even lacquers with very complex compositions are used for this purpose.
Of course, potting is not quite that simple. Errors in processing can lead to gaps in this "protective film". Incorrect application can even damage the component through internal stresses. Therefore, as is so often the case, an expert is needed here as well. "We have long noticed an increase in the importance of potting compounds, especially in E&E applications, and a corresponding increase in the need for training. That is why SKZ is working together with Fraunhofer IFAM to offer appropriate training on a regular basis," says Matthias Ruff, Sales Manager at the SKZ.
Further information on the course "Polymerverguss in Elektrik und Elektronik"
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