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Glossary » Materials » Polymers » Polyurethane » Thermoplastic » Unreinforced » Molding
Unreinforced Molding PU is a subcategory of Polyurethane. The additative is added during the manufacturing process. Its elastic modulus ranges from 190 to 300 MPa. Its flexural modulus ranges from 4 to 310 MPa. Its tensile strength ranges from 4500 to 9000 MPa at break. Its flexural strength ranges from 10200 to 15000 MPa. Its Izod Impact strength ranges from 1.5 to 1.8 J/cm. Its elongation at break ranges from 60 to 550 %. Its specific gravity ranges from 1.12 to 1.24. Its coefficient of thermal expansion ranges from 0.5 to 0.8 x 10-6/°C. Its melting temperature ranges from 75 to 137 °C. Its molding pressure ranges from 6 to 15 MPa.
Polyurethane, also known as PU, is a thermoplastic or thermoset, (typically reinforced), polyadduct. Common trade names are Estane and Pellanthane. thermoplastic It has high impact resistance, dielectric strength, chemical resistance, and abrasion resistance. It can be made into films, solid moldings, or flexible foams. However, it becomes brittle with prolonged outdoor exposure. It is often used in automotive structural members, computer housings, furniture, and packaging foams.
Additional Information
Other common Polyurethane (PU) include Casting Resin, Liquid PU, Casting Resin, Unsaturated PU, 30% Long Glass Fiber Reinforced PU, Long Glass Reinforced Molding Compound PU, and 30% PAN Carbon Fiber EMI Shielding (conductive) PU.
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