Application of resins – safe electronics is reliable electronics!
???? Nobody likes moisture that can appear in undesirable places. Therefore, “clean” electronics should be separated from surroundings. This will avoid potentially time-consuming repairs and save a lot of nerves. The pouring of the resin and its proper selection is crucial here. The technology for preparing the pouring resin usually involves mixing two liquid components (base/resin – component A and catalyst/hardener – component B) together in the right proportions. This is why it is so important to use the right equipment that can guarantee a reproducible and accurate mixture, so that in the final stage the finished resin has the best possible properties and the pouring of the resin itself does not bring additional problems.
A brief overview of the resins used to protect electronics:
???? epoxy resins – characterised by increased hardness, most often used when high mechanical or chemical resistance is needed. An additional advantage is its high temperature resistance (realistically up to ~140-160°C).
????polyurethanes – are far more flexible than epoxy, making them excellent at damping and absorbing all types of vibration and shock – consequently reducing the risk of mechanical damage.
????silicones – this is the group of materials with the lowest hardness, but also high thermal resistance. When silicone is modified with a special filler, such a sealant performs very well as a thermal transfer material, which improves the thermal resistance of the applied electronics.
Above all, each sealant ensures that the electronics are protected from adverse external influences. Thanks to such a process, the service life of electronic equipment can be significantly extended, which indirectly also contributes to environmental protection. Therefore, it is very important to select a coating with the right properties in order to maximise its potential.
????Here is a video of the epoxy resin flooding process for electronics. The film was made by the APCom team.