Organic aerogel microspheres and fabrication method therefor

Patent · Mon Jan 01 04:00:00 EST 1996

OSTI ID:870378

Mayer, Steven T ^[1]; Kong, Fung-Ming ^[2]; Pekala, Richard W ^[3]; Kaschmitter, James L ^[2]

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1. San Leandro, CA
2. Pleasanton, CA
3. Pleasant Hill, CA

Organic aerogel microspheres which can be used in capacitors, batteries, thermal insulation, adsorption/filtration media, and chromatographic packings, having diameters ranging from about 1 micron to about 3 mm. The microspheres can be pyrolyzed to form carbon aerogel microspheres. This method involves stirring the aqueous organic phase in mineral oil at elevated temperature until the dispersed organic phase polymerizes and forms nonsticky gel spheres. The size of the microspheres depends on the collision rate of the liquid droplets and the reaction rate of the monomers from which the aqueous solution is formed. The collision rate is governed by the volume ratio of the aqueous solution to the mineral oil and the shear rate, while the reaction rate is governed by the chemical formulation and the curing temperature.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA
• DOE Contract Number: W-7405-ENG-48
• Assignee: Regents of University of California (Oakland, CA)
• Patent Number(s): US 5508341
• OSTI ID: 870378
• Country of Publication: United States
• Language: English

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