Organic aerogel microspheres and fabrication method therefor

Patent · Mon Jan 01 00:00:00 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 (United States)
• 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

Related Subjects

organic
aerogel
microspheres
fabrication
method
capacitors
batteries
thermal
insulation
adsorption
filtration
media
chromatographic
packings
diameters
ranging
micron
pyrolyzed
form
carbon
involves
stirring
aqueous
phase
mineral
oil
elevated
temperature
dispersed
polymerizes
forms
nonsticky
spheres
size
depends
collision
rate
liquid
droplets
reaction
monomers
solution
formed
governed
volume
ratio
shear
chemical
formulation
curing
mineral oil
collision rate
fabrication method
reaction rate
volume ratio
aerogel microspheres
thermal insulation
organic phase
method involves
aqueous solution
elevated temperature
carbon aerogel
form carbon
chemical formula
aqueous organic
chromatographic packing
organic aerogel
liquid droplet
shear rate
chromatographic packings
method involve
liquid droplets
diameters ranging
filtration media
liquid drop
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