What are the raw materials for low dielectric glass fiber?
Glass fiber according to shape and length, can be divided into continuous fiber length, fiber and glass wool; according to the glass component, can be divided into non alkali, chemical resistance, high alkali, alkali, high strength, high elastic modulus and alkali resistant glass fiber etc..The main raw material for the production of glass fiber are: quartz sand, limestone, dolomite, alumina and pyrophyllite, boric acid, sodium carbonate, mirabilite and fluorite etc.. The production methods can be roughly divided into two categories: one is the molten glass directly into the fiber; one is the molten glass into the first 20mm diameter glass ball or rod, in a variety of ways made by heating a diameter of 3 ~ 80 m very fine fiber. An infinitely long fiber drawn from a platinum alloy plate by mechanical wire drawing is called continuous glass fiber, commonly known as long fiber. A discontinuous fiber made from a roller or air flow, called a fixed length glass fiber, commonly referred to as staple. Fine, short, flocculent fibers made from centrifugal force or high velocity air flow, called glass wool. Glass fibers are processed into various shapes, such as yarn, roving, chopped strand, cloth, band, felt, plate, tube, etc..
Glass fiber is a kind of inorganic nonmetallic material with excellent properties. English name is: glass, fiber or fiberglass. Composition of silica, alumina, calcium oxide, boron oxide, sodium oxide, Magnesium Oxide etc.. It is prepared by high temperature melting, wire drawing, winding and weaving process with glass balls or waste glass as. All kinds of products formed finally, glass fiber monofilament diameter from a few microns to twenty micron, the equivalent of a hair 1/20-1/5, each bundle of fibers are hundreds or even thousands of root root filaments, usually as a reinforcing material of complex materials, electrical insulating materials and insulation materials, circuit board, etc. and widely used in various fields of the national economy.
Glass fiber is divided into different grades according to its composition, properties and uses. According to the provisions of the standard level (see table), E glass fiber is most widely used, widely used in electrical insulating materials; special fiber grade S, while the output is small, but very important, because it has super strength, mainly used for military defense, such as bullet proof box; C level more than E with chemical resistance in the battery isolation plate, chemical filter; a basic glass fiber reinforced materials used in the production.The main component of glass fibre and its main components are silica, alumina, calcium oxide, boron oxide, sodium oxide, Magnesium Oxide, depending on the amount of alkali content in glass, can be divided into non alkali glass fiber (Na2O 0% ~ 2%, which belongs to the aluminum borosilicate glass), glass fiber (8% ~ sodium sodium calcium silicate glass 12%, a boron containing or not containing boron) and high alkali glass fiber (Na2O 13%, sodium calcium silicate glass).
