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Title: Organic aerogel microspheres and fabrication method therefor

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.
Authors:
; ; ;
Publication Date:
OSTI Identifier:
215238
Report Number(s):
US 5,508,341/A/
PAN: US patent application 8-089,119
DOE Contract Number:
W-7405-ENG-48
Resource Type:
Patent
Resource Relation:
Other Information: PBD: 16 Apr 1996
Research Org:
University of California
Country of Publication:
United States
Language:
English
Subject:
40 CHEMISTRY; MICROSPHERES; CHEMICAL PREPARATION; PYROLYSIS; MONOMERS; POLYMERIZATION; OILS; MIXING; TEMPERATURE DEPENDENCE; USES