WACKER's new silicone elastomers for LED manufacturing

At the 2016 Guangzhou International Lighting Exhibition, WACKER launched a number of new LUMISIL silicone elastomers for LED manufacturing. Among them, LUMISIL 650 is a conventional refractive index (RI1.41) silicone material for LED packaging. It has excellent aging and high temperature resistance and is suitable for COB packaging applications. Another LUMISIL 7601 is a highly transparent, low-volatility liquid silicone rubber that is ideal for the manufacture of automotive lens and other optical components. LUMISIL 650 is a low viscosity two component addition cure silicone elastomer with self-adhesive, transparent after curing and a Shore A hardness of 50. The LUMISIL 650 is highly resistant to high temperatures, light and thermal shock, as evidenced by related aging tests. After 500 hours of storage in a 245C environment, the LUMISIL 650 sample was neither yellow nor embrittled. Even after 1000 hours, the rubber change after curing was not significant. The LUMISIL 650 can withstand more than 1000 thermal shocks from 125C to -45C. Due to its excellent stability, this product is particularly suitable for LED COB packages and for electronic component packaging. WACKER's new LUMISIL 650 conventional refractive index encapsulant has excellent aging and high temperature resistance. It is suitable for COB packaging applications and can effectively protect sensitive LED semiconductor chips from environmental influences. (Photo: Wacker Chemie AG) LUMISIL 7601 series is a paste-like, two-component liquid silicone elastomer with a short curing time. Its vulcanized product has high optical transparency and can withstand up to 200C for a long time. high temperature. LUMISIL 7601 also has the characteristics of light weight, radiation resistance, aging resistance and easy processing. It has obvious application advantages in the lamp industry and helps to reduce the weight of automobiles. In addition, LUMISIL 7601 is a degassing product, and the products manufactured therewith do not need to be tempered in most cases. Even if tempering is required, the tempering process is short and there is little shrinkage during heating. This feature of LUMISIL 7601 has greatly improved production efficiency. WACKER LUMISIL 7601 series liquid silicone rubber is highly transparent, high temperature resistant, light weight and easy to process. It is an ideal material for the manufacture of lamp lenses and other optical components. (Photo: Wacker Chemie AG)

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