Method of low pressure and/or evaporative drying of aerogel

Details Method of low pressure and/or evaporative drying of aerogel Method of low pressure and/or evaporative drying of aerogel

1993-04-01

1995-05-30

Kight, III, John

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Cellular products or processes of preparing a cellular...

521113, 521114, 521181, 521 64, 502418, 502437, C08J 900

Patent

active

054201683

ABSTRACT:
A process whereby Resorcinol/Formaldehyde (RF) aerogel having a density of about 0.4-1.2 g/cc can be manufactured using a simple air drying procedure. This process is inherently simpler, quicker, and less expensive than the more conventional supercritical or subcritical CO.sub.2 extraction procedures. RF aerogels can be used as produced, such as in insulation applications, or pyrolyzed to form carbon aerogels with a density of about 0.9 g/cc for use in applications such as batteries, supercapacitors, etc.

REFERENCES:
patent: 4756898 (1988-07-01), Hopper et al.
patent: 4832870 (1989-05-01), Clough et al.
patent: 4832881 (1989-05-01), Arnold, Jr. et al.
patent: 4873218 (1989-10-01), Pekala
patent: 4997804 (1991-03-01), Pekala
patent: 5252620 (1993-10-01), Elliott, Jr. et al.
UCRL-99846, Resorcinol-Formaldehyde Aerogels And Their Carbonized Derivatives, R. W. Pekala et al., Oct. 24, 1988.

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