Classification Of Glass Fibers
Glass fiber tube can be divided into continuous fiber, fixed length fiber and glass wool according to shape and length; According to the composition of glass, it can be divided into alkali free, chemical resistant, high alkali, medium alkali, high strength, high elastic modulus and alkali resistant glass fiber.
The main raw materials for producing glass fiber are: quartz sand, alumina, pyrophyllite, limestone, dolomite, boric acid, soda ash, mirabilite, fluorite, etc. Production methods can be roughly divided into two categories: one is to directly make fibers from molten glass; One is to make the molten glass into a glass ball or rod with a diameter of 20mm, and then heat and remelt it in various ways to make it into a glass ball or rod with a diameter of 3 ~ 80 μ M. The infinite fiber drawn by platinum alloy plate by mechanical drawing is called continuous glass fiber, which is generally called long fiber. Discontinuous fibers made by roller or air flow are called fixed length glass fibers, which are generally called short fibers. The fine, short and flocculent fibers made by centrifugal force or high-speed air flow are called glass wool. After processing, glass fiber can be made into various forms of products, such as yarn, untwisted roving, chopped precursor, cloth, tape, felt, plate, tube, etc.
Glass fiber is divided into different grades according to its composition, properties and uses. According to the standard grade (see table), Grade E glass fiber is the most commonly used and widely used in electrical insulation materials; Grade s is a special fiber. Although its output is small, it is very important. Because of its super strength, it is mainly used for military defense, such as bulletproof boxes; Grade C is more chemical resistant than Grade E, and is used for battery isolation plate and chemical poison filter; Class A is alkaline glass fiber, which is used to produce reinforcing materials.
Glass fiber - main components the main components are silicon dioxide, aluminum oxide, calcium oxide, boron oxide, magnesium oxide, sodium oxide, etc. according to the amount of alkali in the glass, it can be divided into non alkali glass fiber (sodium oxide 0% ~ 2%, belonging to aluminum borosilicate glass), medium alkali glass fiber (sodium oxide 8% ~ 12%, belonging to sodium calcium silicate glass containing or without boron) and high alkali glass fiber (sodium oxide more than 13%, belonging to sodium calcium silicate glass).
Production methods can be roughly divided into two categories: one is to directly make fibers from molten glass; One is to make the molten glass into a glass ball or rod with a diameter of 20mm, and then heat and remelt it in various ways to make it into a glass ball or rod with a diameter of 3 ~ 80 μ M. The infinite fiber drawn by platinum alloy plate by mechanical drawing is called continuous glass fiber, which is generally called long fiber. Discontinuous fibers made by roller or air flow are called fixed length glass fibers, which are generally called short fibers. The fine, short and flocculent fibers made by centrifugal force or high-speed air flow are called glass wool. After processing, glass fiber can be made into various forms of products, such as yarn, untwisted roving, chopped precursor, cloth, tape, felt, plate, tube, etc.
Wave fiber tubes are divided into different levels according to their composition, properties and uses. According to the standard grade (see table), Grade E glass fiber is the most commonly used and widely used in electrical insulation materials; Grade s is a special fiber. Although its output is small, it is very important. Because of its super strength, it is mainly used for military defense, such as bulletproof boxes; Grade C is more chemical resistant than Grade E, and is used for battery isolation plate and chemical poison filter; Class A is alkaline glass fiber, which is used to produce reinforcing materials
