Maryland's Defense Patent Database

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Closed-cell foam silica

Patent image
NRL

A method of making a closed-cell silica foam glass is provided which can include diffusing a substance into a porous glass substrate to form an impregnated substrate, sealing the impregnated glass substrate and heating to a first temperature, wherein the pressure is greater than one atmosphere, heating the container to a second temperature, wherein the second temperature is higher than first temperature, removing the solid glass, non-porous substrate, and heating the solid glass, non-porous substrate to a third temperature to soften the solid glass, non-porous substrate and thereby expand the solid glass, non-porous substrate. A closed-cell silica foam product is provided which can have a closed-cell structure and high temperature insulating property.

Inventors: 
Huston, Alan L.; Justus, Brian I.
Patent Number: 
Technical domain: 
Machines and Processing
FIle Date: 
2007-05-18
Grant Date: 
2010-09-07
Grant time: 
1,208 days
Grant time percentile rank: 
22
Claim count percentile rank: 
5
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US NAVY