Protection of Electronics
3M of Neuss, Germany, has developed a new coating for the surfaces of electronic components. This product, designated 3M Novec EGC-2702, is a further development of the proven 3M Novec electronics surface coating EGC-1700, which cures completely at room temperature. The new material, on the other hand, can be oven-cured. This thermal curing gives the protective film improved mechanical properties and higher heat resistance (up to 200°C). The heat treatment process takes about 30 min and is carried out at temperatures of between 60 and 90°C, depending on the intended application.
After drying, the coating provides a transparent protective layer about 700 to 800 nm in thickness. This coating has extremely low surface energy, which gives it excellent moisture- and soil-repellent properties. The coated components therefore have long-lasting protection from corrosion and electrical short-circuiting due to migration.
3M Deutschland GmbH
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