Abstract:This classification method is mainly used for the classification of continuous glass fibers. Generally distinguished by different alkali metal oxide c
This classification method is mainly used for the classification of continuous glass fibers. Generally distinguished by different alkali metal oxide content, alkali metal oxide generally refers to sodium oxide and potassium oxide. {TodayHot} In the glass material, soda ash, Glauber's salt, feldspar and other substances are introduced. Alkali metal oxide is one of the main components of ordinary glass, and its main function is to lower the melting point of glass. However, the higher the content of alkali metal oxides in the glass, the lower its chemical stability, electrical insulation properties and strength. Therefore, for different uses of glass fibers, glass components with different alkali content should be used. Therefore, the alkali content of glass fiber components is often used as a sign to distinguish continuous glass fibers for different purposes.
According to the alkali content in the glass composition, continuous fibers can be divided into the following types:
E-glass fiber (commonly known as E glass): R2O content is less than 0.8%, is an aluminoborosilicate component. Its chemical stability, electrical insulation properties and strength are very good. Mainly used as electrical insulation material, glass fiber reinforced plastic reinforcement material and tire cord. Medium-alkali fiber: The content of R2O is 11.9%-16.4%. It is a sodium-calcium silicate component. Because of its high alkali content, it cannot be used as an electrical insulating material, but its chemical stability and strength are good. Generally used as latex cloth, grid cloth base material, acid filter cloth, window screen base material, etc., it can also be used as a glass fiber reinforced plastic reinforcement material that does not have strict requirements on electrical properties and strength. This kind of fiber is low in cost and has a wide range of uses.
High alkali fiber: glass composition with R2O content equal to or greater than 15%. Such as glass fiber drawn from broken flat glass, broken bottle glass, etc., are all of this type. It can be used as waterproof and moisture-proof materials such as storage battery separator, pipe wrapping cloth and felt. Special glass fiber: such as high-strength glass fiber composed of pure magnesium-aluminum-silicon ternary, magnesium-aluminum-silicon series high-strength and high-elastic glass fiber; silicon-aluminum-calcium-magnesium series chemical-resistant glass fiber; aluminum-containing fiber; high silica fiber; quartz fiber Wait.
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