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Title: Low density, resorcinol-formaldehyde aerogels

Abstract

The polycondensation of resorcinol with formaldehyde under alkaline conditions results in the formation of surface functionalized polymer clusters. The covalent crosslinking of these clusters produces gels which when processed under supercritical conditions, produce low density, organic aerogels (density [<=]100 mg/cc; cell size [<=]0.1 microns). The aerogels are transparent, dark red in color and consist of interconnected colloidal-like particles with diameters of about 100 [angstrom]. These aerogels may be further carbonized to form low density carbon foams with cell size of about 0.1 micron.

Inventors:
Issue Date:
OSTI Identifier:
7070108
Patent Number(s):
4873218 A
Application Number:
PPN: US 7-199404
Assignee:
Dept. of Energy, Washington, DC (United States) PTO; EDB-94-117299
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Resource Relation:
Patent File Date: 26 May 1988
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; FOAMS; SYNTHESIS; FORMALDEHYDE; DEHYDROCYCLIZATION; POLYMERIZATION; GELS; CARBONIZATION; RESORCINOL; PORE STRUCTURE; ALDEHYDES; AROMATICS; CHEMICAL REACTIONS; COLLOIDS; DECOMPOSITION; DEVELOPERS; DISPERSIONS; HYDROXY COMPOUNDS; MICROSTRUCTURE; ORGANIC COMPOUNDS; PHENOLS; POLYPHENOLS; 400201* - Chemical & Physicochemical Properties

Citation Formats

Pekala, R.W. Low density, resorcinol-formaldehyde aerogels. United States: N. p., 1989. Web.
Pekala, R.W. Low density, resorcinol-formaldehyde aerogels. United States.
Pekala, R.W. Tue . "Low density, resorcinol-formaldehyde aerogels". United States.
@article{osti_7070108,
title = {Low density, resorcinol-formaldehyde aerogels},
author = {Pekala, R.W.},
abstractNote = {The polycondensation of resorcinol with formaldehyde under alkaline conditions results in the formation of surface functionalized polymer clusters. The covalent crosslinking of these clusters produces gels which when processed under supercritical conditions, produce low density, organic aerogels (density [<=]100 mg/cc; cell size [<=]0.1 microns). The aerogels are transparent, dark red in color and consist of interconnected colloidal-like particles with diameters of about 100 [angstrom]. These aerogels may be further carbonized to form low density carbon foams with cell size of about 0.1 micron.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1989},
month = {10}
}