Process for forming transparent aerogel insulating arrays

Patent · Tue Sep 09 00:00:00 EDT 1986

OSTI ID:5189384

Tewari, P H; Hunt, A J

This patent describes a drying process for forming transparent aerogel insulating arrays of the type utilizing the steps of hydrolyzing and condensing alkoxides to form alcogels, and subsequently removing the alcohol therefrom to form aerogels, the improvement comprising the additional step, after alcogels are formed, of substituting a solvent having a critical temperature less than the critical temperature of the alcohol for the alcohol in the alcogels, and drying the resulting gels at a supercritical temperature for the solvent, to thereby provide a transparent aerogel array within a substantially reduced drying time period.

• Assignee: Dept. of Energy, Washington, DC
• Patent Number(s): US 4610863
• OSTI ID: 5189384
• Resource Relation: Patent File Date: Filed date 04 Sep 1985
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
GELS
CHEMICAL PREPARATION
DRYING
THERMAL INSULATION
HYDROLYSIS
ALCOHOLS
ALKOXIDES
CRITICAL TEMPERATURE
OPACITY
REMOVAL
SOLVENTS
TIME DEPENDENCE
CHEMICAL REACTIONS
COLLOIDS
DECOMPOSITION
DISPERSIONS
HYDROXY COMPOUNDS
LYSIS
OPTICAL PROPERTIES
ORGANIC COMPOUNDS
PHYSICAL PROPERTIES
SOLVOLYSIS
SYNTHESIS
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE
400201* - Chemical & Physicochemical Properties