| 摘要 |
<p>A sol spinning solution for silica fiber production is produced by converting a liquid mixture of alkoxysilane polycondensate, water, catalyst and organic solvent to a viscous sol, or by polycondensation of a liquid mixture of alkoxysilane, water, catalyst and organic solvent conducted either at a reaction temperature of 20°C or above at a relative humidity of 60% or above as calculated in terms of a relative humidity at 20°C, or at a reaction temperature of below 20°C in an atmosphere of at least 60% or above of the relative humidity at the reaction temperature. Thus, the production time can be shortened, and the time allowed for spinning can be prolonged. Further, by spinning the resultant sol spinning solution in accordance with an electrostatic atomization method, a silica fiber can be produced easily within a short period of time. The produced silica fiber excels in mechanical strength.</p> |
