Glass wool belongs to a category of glass fibers, which includes glass wool.
According to the shape and length, glass fiber can be divided into continuous fiber, fixed-length fiber and glass wool; according to the glass composition, it can be divided into alkali-free, chemical resistance, high alkali, medium alkali, high strength, high elastic modulus and alkali resistance ( anti-alkali) glass fiber, etc.
The main raw materials for producing glass fiber 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 molten glass into fibers; the other is to first make molten glass into glass balls or rods with a diameter of 20 mm, and then heat and remelt them in various ways to make glass balls or rods with a diameter of 3 to 3 mm. 80μm very fine fibers. The infinitely long fibers drawn by the mechanical drawing method of platinum alloy plates are called continuous glass fibers, commonly known as long fibers. Discontinuous fibers made by rollers or air flow are called fixed-length glass fibers, commonly known as short fibers.
According to the composition, properties and uses, glass fibers are divided into different grades. According to the regulations of the standard grade, the E-grade glass fiber is the most commonly used and is widely used in electrical insulating materials, and the S-grade is a special fiber.