With suitable raw glass components, various products such as yarns and cloths can be made according to the production process of ordinary glass fibers. After acid leaching and thermal sintering, high-oxygen products with high temperature resistance close to quartz fibers are obtained. For the original glass components, there are mainly E glass and SiO2-B203-Na2O and SiO2-B203 binary systems as the original glass components. China mainly uses three-component sodium borosilicate glass.
In the production, the high silicon oxide product is acid leached, and the phase separation of the structure is used to leaching the B203 and Na2O components into the solution, so that the SiO2 enrichment amount reaches 96% or more. Then, after 600-800 ° C high-temperature thermal sintering stereotypes, the micropores are closed, the skeleton structure tends to be tight, and a high-performance high-silica glass fiber product is obtained.