Glass fibers are generally classified according to the composition of glass raw materials, monofilament diameter, fiber characteristics, fiber appearance and so on. Glass fiber has a combined untwisted roving, direct untwisted roving, short cut raw silk, untwisted roving cloth, glass fiber mat, friction materials, continuous glass fiber, and so on.
I. Classification of glass raw material composition: generally differentiated by the content of different alkali metal oxides
(1) Alkali-free fibers (commonly known as E-glass): ?R2O content of less than 0.8%, is a kind of aluminum borosilicate composition. It has good chemical stability, electrical insulation properties, and strength. It is mainly used as electrical insulating material, reinforcing material of FRP and tire cord.
(2) alkali fiber: R2O content of 11.9%-16.4%, is a sodium calcium silicate component, because of its high alkali content, can not be used as electrical insulating materials, but its chemical stability and strength is still good. Generally, it is used as latex cloth, chevron cloth base material, acid filter cloth, window screen base material, etc.
(2) high alkali fiber: R2O content equal to or greater than 15% of the glass component. Such as the use of broken plate glass, broken bottle glass and other raw materials drawn from the glass fiber. Can be used for battery isolation sheet, pipe wrapping cloth and felt and other waterproof, moisture-proof materials.
Two, monofilament diameter classification: glass fiber monofilament is cylindrical, thickness can be expressed in diameter
(1) coarse fiber: its monofilament diameter is generally 30um
(2) primary fiber: its monofilament diameter is greater than 20um;
(3) intermediate fiber: monofilament diameter of 10-20um
(4) advanced Fiber: (also known as textile fibers) the monofilament diameter of 3-10um.
Three, in order to classify the fiber characteristics: fiber high-strength glass fibers; high-modulus glass fibers; high-temperature glass fibers; alkali-resistant glass fibers; acid-resistant glass fibers; ordinary glass fibers (refers to the non-alkali and alkali glass fibers); optical fibers; low dielectric constant glass fiber; conductive fibers and so on
Glass fibers (the original English name: glass fiber, glass fiber). English original name: glass fiber or fiberglass ) is an excellent performance of inorganic non-metallic materials, a wide range of advantages of good insulation, heat resistance, corrosion resistance, high mechanical strength, but the disadvantage is the nature of the brittle, wear resistance is poor. It is chlorite, quartz sand, limestone, dolomite, boron calcium stone, boron magnesium stone seven kinds of ores as raw materials by high-temperature melting, drawing, winding, weaving and other processes into the manufacture of the monofilament diameter of a few microns to more than 20 microns, equivalent to a hair of 1/20-1/5, each bundle of fibers are composed of hundreds or even thousands of monofilaments.
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