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Glossary » Materials » Polymers » Phenol-Formaldehyde Plastic » Phenol-Formaldehyde » Cotton Filled, Impact Modified » Molding Compounds

Cotton Filled, Impact Modified Molding Compounds PF is a subcategory of Phenol-formaldehyde Plastic. The additative is added during the manufacturing process. Its elastic modulus ranges from 1100 to 1400 MPa. Its flexural modulus ranges from 800 to 1300 MPa. Its tensile strength ranges from 6000 to 10000 MPa at break. Its flexural strength ranges from 9000 to 13000 MPa. Its compressive strength ranges from 23000 to 31000 MPa. Its Izod Impact strength ranges from 0.3 to 1.9 J/cm. Its elongation at break ranges from 1 to 2 %. Its hardness ranges from 105 to 120 Rockwell M. Its specific gravity ranges from 1.38 to 1.42. Its coefficient of thermal expansion ranges from 15 to 22 x 10^-6/°C. Its molding pressure ranges from 2 to 20 MPa.

Phenol-formaldehyde Plastic, also known as PF, is a thermoset polycondensate. The most common trade name is Bakelite. phenol-formaldehyde A naturally brittle material in pure form, it is able to be strengthened with fillers such as wood pulp and cellulose. PF is the first volume-produced synthesized polymer resin. It was widely used in early consumer electronic products such as telephones and radios.