Wevo presents new silicone gels for electronics and electrical engineering
Ostfildern-Kemnat, Germany – One of the key advantages of the newly developed silicone gels from WEVO-CHEMIE GmbH is their viscosity, which is up to 50% lower than standard products available in the market. Additionally, these gels offer a range of adaptable material properties suitable for both large and relatively small volumes, tailored to meet specific component and customer requirements. Examples include the pot life and curing time necessary for efficient production, as well as the penetration hardness for optimal protection against challenging ambient conditions. For instance, the room-temperature-vulcanizing (RTV-2) silicones provide reliable moisture protection for electronic components.
Silicone gels are indispensable when it comes to protecting sensitive components against mechanical stresses such as vibration, shocks or large changes in temperature. Efficient and safe electronics manufacturing is likewise an increasingly relevant aspect. The newly developed Wevo products provide crucial advantages here compared to many standard materials.
Whereas most standard products have viscosities in the region of 1000 mPa·s, the two-component silicone gels in the WEVOSIL series offer around 500 mPa·s. That not only enables faster filling of complex component geometries, it also improves air bubbles elimination – with electrical encapsulation under atmospheric conditions. Parameters such as pot life (processing time) or reactivity (curing time) can additionally be customized. The upshot: shorter cycle times in serial production as well as safe and reliable operation of the component thanks to better protection.
In addition to safety, the trend towards more eco-friendly conditions for electronics manufacturing and component operation also plays an increasingly important role. Wevo therefore uses modern raw materials with a low level of volatile organic compounds (VOCs) as a basis for the RTV-2 silicone gels.
Another key feature of Wevo silicone gels is their customizable consistency, which can be adjusted from very soft to dimensionally stable and elastic depending on requirements. Application- or component-specific thermal expansion and contraction cycles are now possible without risking the formation of dangerous mechanical stresses. Due to their pronounced tackiness, the materials also adhere well to different substrates. Sensitive electronic components thus benefit from more effective protection against environmental influences such as moisture, particles or chemical substances – and electrical insulation is more reliable. Last but not least, visual component inspections are a simple matter owing to the transparent or translucent gel color – customized colors are possible too on request.