Refractory fibers with Silica Sol as the main raw material are widely used as thermal insulation materials in industrial furnaces and other thermal and industrial equipment due to their excellent energy saving and high temperature resistance Other amorphous refractories and ceramic products with silica sol as a bond because they will not bring in a variety of low melting point oxides improve the use of performance and have the advantages of high release strength high temperature volume stability high temperature thermal shock resistance etc Si02 2931 Na2O 05 Specific gravity25 119121 PH value25 9105 Viscosity25 65 Particles SizeNM 1020 Shelf life 1 year appearance transparent