Processing entailing sol-gel fabrication of silica glass
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United States of America Patent
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Feb 5, 2002
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N/A
app pub date -
Aug 2, 1999
filing date -
May 14, 1996
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Abstract
Silica sols exhibiting desirable yield-dilatancy are fabricated. A mixture comprising silica, water, and a pH-adjusting agent is provided, and the mixture is shear-mixed. The desirable properties of the resultant sol are attained by using a concentration of pH-adjusting agent that provides a viscosity within a particular range during shear mixing. The requisite pH range, however, changes depending on the properties of the silica mixture. A discovered technique for determining this changing pH range is by selecting the pH based on the silica surface area per unit volume of the mixture.
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