Silicate glass fibers

Container Insulation Tanks containing materials above atmospheric temperature may require insulation to reduce loss of heat. Almost any of the commonly used insulating materials can be employed. Calcium silicate, glass fiber, mineral wool, cellular glass, and plastic foams are among those used. Tanks exposed to weather must have jackets or protective coatings, usually asphalt, to keep water out of the insulation. 

Lin, A. Kim, B. H. Ju, S. Han, W.-T. 2007. Fabrication and third-order non linearity of germano-silicate glass fiber incorporated with Au nanoparticles. Proc. SPIE-Int. Soc. Opt. Eng. 6481 64810M/64811-64810M/64817. 

Glass fibers are the most common reinforcing fiber due to their excellent combination of mechanical properties, dielectric properties, thermal stability and relatively low cost. As a result, there are many different types of silicate glass fibers, all with varying properties designed for various applications (see Table 1.32). The majority... 

Silicate glass fibers, which command by far the largest sales volume in the market, are derived from the liquid phase, a viscous melt. Ultrapure silica fibers are either derived from a melt, which is downdrawn from a preform, or they are dry spun from a viscous solution. While a high melt or solution viscosity seems to be a generai prerequisite for fiber formation, it is possible to form glass fibers, such as YAG or aluminate glass fibers, from melts. 

Silicate - glass fiber endless solid one comm. liquid/melt 6.1.2... 

Their resistance to aikaline media exceeds that of commercially available AR silicate glass fibers (Chapter 6) having a zirconia content of up to 15% [20]. Hydroxyl-free quaternary calcium aluminate glass fibers (Figure 9), e.g., non-silica fibers containing 46.2% AI2O3 -36.0% CaO - 4.0% MgO -13.8% BaO, afford sapphire-like infrared transmission properties. 

The commercial potential of updrawn quaternary calcium aiuminate giass fibers was tested in two stages. In the early 1960s, they were evaluated because they yielded higher moduli than those which couid then be achieved with siiicate glass fibers [36-37]. Timing for this development coincided with the onset of the commercial development of carbon fibers and no new aluminate or silicate glass fiber was commercialized until 1995. 

Table IV. High strength (HS-) silicate glass fibers...

Table V. High Modulus silicate glass fibers LaA ZnO BeO YA...

Generic borosilicate E-glass fibers Aluminosilicate fibers (<30%CeO2) Lead silicate glass fibers (<30%PbO) Niobium silicate fibers (<15%Ni,Os)... 

Silicate glass fibers with non-round cross sections... 

Commercial boron/tungsten fibers are derived directly from the vapor phase. Commercial silicate glass fibers and most commercial silica glass fibers are derived from their melts, but some silica fibers, as discussed in Chapter 5, can be derived from viscous aqueous solutions. Glass fibers are therefore derived directly from a liquid phase. Commercial ceramic and carbon fibers are produced from solid precursor, or green, fibers which, in turn, are derived from a melt, dispersion, or viscous solution. This section of the book deals with fibers which are derived from solid precursor fibers. 

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