Glass fibers Compositions and properties Advantages and disadvantages
Glass fibers – Compositions and properties – Advantages and disadvantages
Glass fibers o Compositions and Structures Mainly sio, +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 with o 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
Glass fibers ● Types and properties E-glass(for electric) ● draws well good strength stiffness good electrical and weathering properties
Glass fibers ⚫ Types and Properties – E-glass (for electric) ⚫ draws well ⚫ good strength & stiffness ⚫ good electrical and weathering properties
Glass fibers ● Types and Properties C-glass(for corrosion) good resistance to corrosion ● low strength
Glass fibers ⚫ Types and Properties – C-glass (for corrosion) ⚫ good resistance to corrosion ⚫ low strength