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Glossary » Materials » Polymers » Silicone » Mineral And/or Glass Filled » Molding and Encapsulating Compounds
Mineral And/or Glass Filled Molding and Encapsulating Compounds SI is a subcategory of Silicone. The additative is added during the manufacturing process. Its tensile strength ranges from 500 to 1500 MPa at break. Its elongation at break ranges from 80 to 800 %. Its hardness ranges from 10 to 80 Shore A. Its specific gravity ranges from 1.8 to 2.05. Its coefficient of thermal expansion ranges from 20 to 50 x 10-6/°C. Its molding pressure ranges from 0.3 to 6 MPa.
Silicone, also known as SI, is a thermoset polycondensate. Common trade names include Baysilon, Blu-Sil, Commex, Fiberite, Lamitex, Siltemp, and Textolite. It maintains its dimensional stability and good electrical and dielectrical properties over a wide range of frequency and temperature. Other useful properties include good flame resistance, low water absorption, moderate thermal shock resistance, and average polymeric mechanical properties. On the other hand, it is high-cost with limited shelf-life and a long curing time. It is often used in computer chips, IC’s, cooking ware, and food containers.
Additional Information
Other common Silicone (SI) include Flexible Casting Resins (including RTV) SI, Liquid Silicone Rubber Injection Molding SI, Silicone / Nylon 66 Psuedo-Interpenetrating Networks SI, and Silicone / Nylon 12 Psuedo-Interpenetrating Networks SI.
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