Fused Silica

Fused Silica Product Features -Used for nozzle of Fireproof materials -Amorphous Silica with white color -Low Coefficient of Thermal Expansion -Melted over 2000°C -Can be manufactured independently Additional Information Fused Silica Molecular formula SiO2 Molecular Weight 60.08 Properties - white & clear, turbid amorphous - low coefficient of thermal expansion. - mollification point : 1,650°C- density : 2.21- crystal structure: amorphous- coefficient of thermal expansion : 0.5?0-6 (at 1000°C) Another name Quartz, Quartz glass, Synthetic Quartz, Silica, Silicon dioxide, Silica glass Application Lately Synthetic Quartz is used for fiber-optic cable, including glass, decoration materials. Manufacturing method Manufacturing method is varied according to the raw materials 1. Natural silica glass - raw materials are Natural Quartz & Silica - melted by arc discharge or hydrogen flame2. Synthetic silica glass- thermal dissociated by oxygen flame or plasma Natural silica glass - divided by glass of turbid silica & purified clear silica- contains impurities like as Al, Fe, Na- used for nozzle, plastic agent at the high temperature, filling agent Synthetic silica glass -although impurity is low, contains groups of Cl, OH according to the raw materials and manufacturing method-supplied to optical science, application of fiber-optical fiber, and various dental tools. Particles of the fused silica- crushed type, sphere type, edgeless type Features 1. very low coefficient of thermal expansion2. superior heat-resistance3. low ventilation4. low thermal conductor5. chemical stability Price - vary according to the quality, purity- filling agent for crushing is 150 ï¿¥ per kg- special product is 1,000 ï¿¥ per kgduct is 1,000 ï¿¥ per kg