Infants and toddlers from birth to three years may be eligible for BabyNet services if they are developing more slowly in any of the following ways: Learning to walk Height & weight
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.
ACETATE ï§ A manufactured fiber in which the fiber forming substance is cellulose acetate. ï§ Acetate is derived from cellulose by reacting purified cellulose from wood pulp with acetic acid and acetic anhydride in the presence of sulfuric acid.races of natural fibres have been located to ancient civilizations all over the gobe. For many thousand years, the usage of fiber was limited by natural fibres such as flax, cotton, silk, wool and plant fibres for different applications. Fibers can be divided into natural fibres and man-made or chemical fibres.