Hebei Xingwang fiberglass cloth Co., Ltd   

        glass fiber according to shape and length, can be divided into continuous long fiber and glass fiber, cotton; according to the glass composition, can be divided into non alkali, chemical resistant, high alkali, alkali, high strength, high modulus of elasticity and alkali resistant glass fiber etc..   the main raw material for the production of glass fiber is: quartz sand, limestone, dolomite, alumina and pyrophyllite, boric acid, soda, Glauber's salt, fluorite milled glass fiber etc.. The production method can roughly be divided into two categories: one category is the glass melt directly into the fiber; one is the molten glass first diameter made of 20mm glass ball or rod, and then to heating various ways made after the diameter of   3 to 80 mu m very fine fiber. Drawn to the mechanical drawing method by platinum alloy plate of infinite length fiber, called continuous glass fiber, commonly known as long fiber. Made by roller or air, discontinuous fibers, known as fixed length of glass fiber, commonly known as the short fiber. Made by centrifugal force or high-speed airflow fine, short, floc fiber, known as the glass cotton. Glass fiber after processing, products can be made into a variety of forms, such as yarn, twistless roving, chopped strands, cloth, belt, felt, plate, pipe etc..   fiber glass according to the composition, properties and uses, there are different levels of. According to the provisions of the standard level (see table), E grade glass fiber is most widely used, widely used in electrical insulating materials; S level for the special fiber yield, although small, but very important, because it has super strength, mainly used for military defense, such as bulletproof box; C level than E more chemical resistance, use in cell isolation board, chemical filter; a class to alkaline glass fiber, used in the production of reinforced material.   producing glass fiber with different from other glass products glass. Glass composition on international commercial fiber has been used as follows:
       
    E- glass;     also known as alkali free glass, is a kind of borosilicate glass. At present is the component of a glass fiber used most widely used glass, with good mechanical strength and electrical insulation, widely used for electrical insulation glass fiber production, can also be used for glass fiber production of glass steel, its shortcoming is easy to be inorganic acid erosion, therefore not suitable for use in acidic environment.
       
    C- glass;     alkali glass also known as, its characteristic is the chemical resistance, especially resistance to acid is better than that of alkali free glass, but poor electrical performance, mechanical strength is lower than the non alkali glass fiber is 10% ~ 20%, three a number of alkali containing boron oxide glass fiber is the two, and the alkali glass fiber in China are not containing boron. In foreign countries, medium alkali glass fiber is used in the production of glass fiber products corrosion resistance, such as used in the production of glass fiber surface mat, glass fiber rod is used for reinforced asphalt roofing materials, but over half of glass fiber production in medium alkali glass fiber (60%), widely used in reinforced glass steel and filter fabric matter, dressing fabric such as the production, because the price is lower than the alkali free glass fiber and have a stronger competitive edge.
        high strength glass fiber
        it has the features of high strength, high modulus, single fiber tensile strength of 2800MPa, than that of alkali free glass fiber tensile strength is 25% higher than E-, elastic modulus 86000MPa, the high strength glass fiber. Glass steel products for production for more than the military, space, armour and sports equipment. But because of the expensive price, not yet in the civil widely, the total world production is thousands of tons.
        glass fiber AR
        also known as alkali resistant glass fiber, mainly in order to enhance the cement and the development of the.
       
    A glass;     also called high alkali glass, is a typical kind of sodium silicate glass, because the water resistance is poor, rarely used in the production of glass fiber.
       
    E-CR glass;     is a modified boron free E-glass, used in the production of acid resistance of glass fiber, its water resistance than the alkali free glass fiber improves 7 ~ 8 times, acid resistant alkali glass fiber is superior than not less the development of new varieties, is specially designed for underground pipelines, tanks etc..
       
    D glass;     also known as low dielectric glass, used in the production of dielectric strength good low dielectric glass fiber.   in addition to glass fiber components above, in recent years is the emergence of a new alkali free glass fiber, it is completely free of boron, thus reducing the pollution to the environment, but its electrical insulating properties and mechanical properties are similar to traditional E glass. There is also a double glass composition for glass fiber, has been used in the production of glass wool, allegedly also has potential in fiberglass reinforced material. In addition to fluorine free glass fiber, it is improved for the environmental protection requirements and the development of alkali free glass fiber.