Blog Post

Development of High silica fiber sleeve

High silica fiber sleeve is a kind of inorganic fiber with the SiO2 content ranging from 95-99% of the total fiber weight, which can be used for long time at the temperature of 900℃. It is a good reinforcing material with the properties of high temperature resistance, ablation resistance, thermal insulation and heat preservation.

For these recent years, with the forbidden of asbestoses and non-ceramic fiber products use promotion internationally, High Slica Fiber Tape products have been developed and applied rapidly. For now, there is only one production process, called acid leaching method, used for producing high silica fiber. With the different original glass components, there will be big difference on final product performance.
Normally, there are three types of original glass component including Sodium-Silicon two components which are widely used for production by former Soviet Union countries; E glass which is used by USA and European countries and Sodium-Boron-Silicon three components which are used by China.
Based on the original glass component for producing Fiberglass Sleeve, there is big difference on SiO2 content. Glass with two components is with about 94-95%, three components with 90-98% and E glass with 95-99%. Higher SiO2 content determines higher temperature resistance. Normally, if the SiO2 content ranging from 94-97%, the using temperature cannot be more than 1000℃ while the SiO2 content more than 98% the temperature resistance can be more than 1200℃. Furthermore, other components can also affect the temperature resistant performance.

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