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How is it made? The raw material used to make carbon fiber is called the precursor. About 90% of the carbon fibers produced are made from polyacrylonitrile (PAN). The remaining 10% are made from rayon or petroleum pitch. All of these materials are organic polymers, characterized by long strings of molecules bound together by carbon atoms.
Carbon fiber is, exactly what it sounds like â fiber made of carbon. But, these fibers are only a base. What is commonly referred to as carbon fiber is a material consisting of very thin filaments of carbon atoms.When bound together with plastic polymer resin by heat, pressure or in a vacuum a composite material is formed that is both strong and lightweight.arbon fiber is, exactly what it sounds like â fiber made of carbon. But, these fibers are only a base. What is commonly referred to as carbon fiber is a material consisting of very thin filaments of carbon atoms.