Silica materials have superb high temperature thermal insulation and heat shieldingproperties.They are applied in many fields of industry. The given materials are a nice thermal barrier and the best available means of protection from fire and influence of thermal energy in technological processes, connected with high temperatures.
Properties
Thermal conductivity, Wt/(m0C) 0.069
Work temperature, C 1150
Permittivity 6.25
Thickness, mm 3…10
Length, mm unlimited
Silica materials have low thermal conductivity, high strength to thermal shock and elevated radia-tion, have superb electric insulation properties at high temperatures and elevated humidity, can be used for a long period of time at the temperature 1000 C and short period of time at higher temperatures. Products made of silica glass are very inert to the majority of chemical reagents, resistant to organic and mineral acids of any concentration even at the elevated temperature (except of the hydro-fluoric, phospho-ric, hydrochloric acids)and to week alkali of the melted metals (except of Mg, Na, Si) and to alloys.They have high chemical resistance to water and steam of high pressure, capable to absorb moisture, but are not splitted in the presence of water, are stable in vacuum. Silica materials are a fine replacement of asbestos. They work at higher temperature and are not harmful for the peoples health, involved in their usage.