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Glossary » Materials » Polymers » Polypropylene » 40% Glass Fiber Reinforced

40% Glass Fiber Reinforced PP is a subcategory of Polypropylene. The additative is added by weight during the manufacturing process. Its elastic modulus ranges from 1100 to 1500 MPa. Its flexural modulus ranges from 950 to 1000 MPa. Its tensile strength ranges from 8400 to 15000 MPa at break. Its flexural strength ranges from 10500 to 2200 MPa. Its compressive strength ranges from 8900 to 9800 MPa. Its Izod Impact strength ranges from 1.4 to 2 J/cm. Its elongation at break ranges from 1.5 to 4 %. Its hardness ranges from 102 to 111 Rockwell R. Its specific gravity ranges from 1.22 to 1.23. Its coefficient of thermal expansion ranges from 27 to 32 x 10^-6/°C. Its molding pressure ranges from 10 to 25 MPa.

Polypropylene, also known as PP, is a thermoplastic, (crystalline), polymer. Common trade names are Marlex HGL and Fortilene 1800 series (FDA materials). homopolymer Its key attributes are high lubricity, high resistance to flexing (excellent material for living hinges), excellent dielectric strength and chemical resistance, good impact strength, and high solvent resistance. It is inexpensive and electroplatable, but it is difficult to paint, print on, or bond to. It will be attacked by fuming nitric acid and degraded by UV and ionizing radiation. PP can be used to make medical syringes, beakers, and parts for auto interiors.