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Glossary » Materials » Polymers » Epoxy » Glass Fiber Reinforced » Sheet Molding Compound (SMC)

Glass Fiber Reinforced Sheet Molding Compound (SMC) Epoxy is a subcategory of Epoxy. The additative is added during the manufacturing process. Its elastic modulus ranges from 2000 to 4000 MPa. Its flexural modulus ranges from 1500 to 2500 MPa. Its tensile strength ranges from 20000 to 35000 MPa at break. Its flexural strength ranges from 50000 to 70000 MPa. Its compressive strength ranges from 20000 to 30000 MPa. Its Izod Impact strength ranges from 30 to 40 J/cm. Its elongation at break ranges from 0.5 to 2 %. Its hardness ranges from 55 to 65 Shore B. Its molding pressure ranges from 0.5 to 2 MPa.

Epoxy is a thermoset polyadduct. Common trade names include Acme, Aerolam, Basoset, Beckopx, Conapoxy, Corlar, Cycom, DER, Desmobond, Dobeckot, Dynopon, Ecco, Epikote, Epocast, Epodite, Eprosin, Eurepox, Exatron, Grilonit, Hysol, Isochembond, Lekutherm, Lopox, Nikalet, Paraplex, Quartrex, Scotchcast, and Synthane. Epoxy possesses many useful properties: air curable, highly fillable, low shrinkage, low susceptibility to stress formation, good adhesion to almost all materials, high tensile and vibrational strength, high heat resistance, high heat deformation resistance, high chemical attack resistance, good aging properties, good electrical and dielectrical properties, odorless, tasteless, and low flammability. Epoxy is commonly used in adhesives and reactive molding compounds. Epoxy is a copolymer, which means it is formed from two different chemicals, usually referred to as the "resin" and the "hardener". Epoxy-based materials can be used for coatings, adhesives, composite materials, mold making, and electrical insulators. When working with epoxy, vinegar is an effective and safe solvent for cleaning epoxy resins from tools, brushes, skin, and most surfaces.