Silica glass fibers high-temperature

Figure 2. Schematic diagram of column tip, second version. 1, Fused-silica column I.D. 0.22 mm 2, chromatographic bed 3, glass fiber filter frit 4, drawn-out 50 ym fused-silica tube 5, high temperature epoxy coating...

Only dry spinning facilitates the formation of amorphous silica glass fibers from viscous solutions. Two process variants are known. One uses a viscous water glass or sodium silicate solution, wherein water is the solvent, and produces a pure and relatively low cost fiber. The other uses a viscous tetraethylorthosilicate solution wherein alcohol is the solvent, and produces an ultrapure premium fiber. In either process, the viscous solution is spun from, or extruded through, multiple spinneret orifices into a hot column that removes the solvent. Before the as-spun fibers are wound onto a package, they are solidified in a final, high temperature curing step. 

Silicon is the most important constituent of igneous and many sedimentary rocks, occurring in combination with oxygen in feldspars, micas, quartz, sands and shales. The element is used in electronic devices, while silicon in combination with oxygen as silica and silicates finds application in concrete, bricks, pottery, enamels, glasses, optical fibers for telecommunications, and refractory (high-temperature resistant) materials. 

For structural applications a line of glass yarn fabrics is engineered. Woven with Advantex glass yarn it can withstand high temperatures. The silica based fabrics are inert and there is nothing to be offgassed. A new product is composed of two different forms of glass fiber, the material is fire, smoke and flame resistant, without flame retardants [ 15]. 

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