Fiberglass is an inorganic non-metallic material with excellent performance. It has a wide variety. Its advantages are good insulation, strong heat resistance, good corrosion resistance and high mechanical strength, but its disadvantages are brittle and poor wear resistance. It is made from pyrophyllite, quartz sand, limestone, dolomite, bocalcite and brucite through high-temperature melting, drawing, winding, weaving and other processes. The diameter of its monofilament is several microns to more than 20 microns, equivalent to 1/20-1 /5 of a hair filament. Each bundle of fiber precursor is composed of hundreds or even thousands of monofilaments. Glass fiber is usually used as reinforcement in composites, electrical insulation materials and thermal insulation materials, circuit substrates and other fields of the national economy.
Raw materials and applications: glass fiber has higher temperature resistance than organic fiber, non combustible, corrosion resistance, good heat insulation and sound insulation, high tensile strength and good electrical insulation. But it is brittle and has poor wear resistance. Used to make reinforced plastics or reinforced rubber, as a reinforcing material, glass fiber has the following characteristics. These characteristics make the use of glass fiber far more extensive than other kinds of fibers, and the development speed is far ahead. Its characteristics are listed below:
(1) High tensile strength and small elongation (3%).
(2) High elastic coefficient and good rigidity.
(3) It has large elongation and high tensile strength within the elastic limit, so it absorbs large impact energy.
(4) It is inorganic fiber, non combustible and good chemical resistance.
(5) Low water absorption.
(6) Good dimensional stability and heat resistance.
(7) Good processability, can be made into strands, bundles, blankets, fabrics and other different forms of products.
(8) Transparent through light.
(9) Good adhesion with resin.
(10) The price is cheap.
(11) It is not easy to burn and can melt into glass beads under high temperature.
