2021-12-10
Classification Of Glass Fiber
According to the shape and length, the glass fiber tube can be divided into continuous fiber, fixed-length fiber and glass wool; according to the glass composition, it can be divided into no alkali, chemical resistance, high alkali, medium alkali, high strength, high elastic modulus and alkali resistance Glass fiber, etc.
The main raw materials for glass fiber production are: quartz sand, alumina and pyrophyllite, limestone, dolomite, boric acid, soda ash, mirabilite, fluorite, etc. The production methods are roughly divided into two categories: one is to directly make fibers from molten glass; the other is to first make molten glass into glass balls or rods with a diameter of 20mm, which are then heated and remelted in a variety of ways to produce a diameter of 3~ 80μm very fine fiber. The infinitely long fiber drawn by the mechanical drawing method through the platinum alloy plate is called continuous glass fiber, commonly known as long fiber. Discontinuous fibers made by rollers or airflow are called fixed-length glass fibers, or short fibers. Thin, short, flocculent fibers made by centrifugal force or high-speed airflow are called glass wool. The glass fiber can be processed into various forms of products, such as yarn, untwisted roving, chopped strand, cloth, tape, felt, plate, tube, etc.
Glass fibers are divided into different grades according to their composition, properties and uses. According to standard grade regulations (see table), E grade glass fiber is the most commonly used and widely used in electrical insulation materials; S grade is a special fiber, although the output is small, it is very important. Because of its super strength, it is mainly used for military defense, such as Bulletproof box