广东费飘职业故本学院 Guangdong Inatitute of Textile Technology Glass fibers a Compositions and properties Advantages and disadvantages
Glass fibers ◼ Compositions and properties ◼ Advantages and disadvantages
广东费飘职业故本学院 Guangdong Inatitute of Textile Technology glass fibers a Compositions and Structures Mainly sio2+oxides of Ca, B, Na, Fe, al Highly cross-linked polymer ■ Noncrystalline ■ No orientation Si and o form tetrahedra with si centered and o at the corners forming a rigid network Addition of Ca, na , k with low valency breaks up the network by forming ionic bonds witho l strength and modulus
Glass fibers Compositions and Structures ◼ Mainly SiO2 +oxides of Ca, B, Na, Fe, Al ◼ Highly cross-linked polymer ◼ Noncrystaline ◼ No orientation ◼ Si and O form tetrahedra with Si centered and O at the corners forming a rigid network ◼ Addition of Ca, Na, & K with low valency breaks up the network by forming ionic bonds with O strength and modulus
广东费飘职业故本学院 Guangdong Inatitute of Textile Technology Glass fibers. 口 Types and Properties E-glass (for electric) 口 draws well a good strength stiffness a good electrical and weathering properties
Glass fibers Types and Properties ◼ E-glass (for electric) draws well good strength & stiffness good electrical and weathering properties
广东费飘职业故本学院 Guangdong Inatitute of Textile Technology Glass fibers. a Types and Properties C-glass(for corrosion) a good resistance to corrosion I low streng 口 gth
Glass fibers Types and Properties ◼ C-glass (for corrosion) good resistance to corrosion low strength