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Glossary » Materials » Polymers » Silicone » Liquid Silicone Rubber Injection Molding
Liquid Silicone Rubber Injection Molding SI is a subcategory of Silicone. It is specially formulated to Liquid silicone rubber injection molding. Its tensile strength ranges from 725 to 1305 MPa at break. Its elongation at break ranges from 300 to 1000 %. Its hardness ranges from 20 to 70 Shore A. Its specific gravity ranges from 1.08 to 1.14. Its coefficient of thermal expansion ranges from 10 to 20 x 10-6/°C. Its molding pressure ranges from 1 to 2 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, Mineral And/or Glass Filled Molding and Encapsulating Compounds SI, Silicone / Nylon 66 Psuedo-Interpenetrating Networks SI, and Silicone / Nylon 12 Psuedo-Interpenetrating Networks SI.
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