Low density microcellular foams
Abstract
Disclosed is a process of producing microcellular foam which comprises the steps of: (a) selecting a multifunctional epoxy oligomer resin; (b) mixing said epoxy resin with a non-reactive diluent to form a resin-diluent mixture; (c) forming a diluent containing cross-linked epoxy gel from said resin-diluent mixture; (d) replacing said diluent with a solvent therefore; (e) replacing said solvent with liquid carbon dioxide; and (f) vaporizing off said liquid carbon dioxide under supercritical conditions, whereby a foam having a density in the range of 35-150 mg/cc and cell diameters less than about 1 [mu]m is produced. Also disclosed are the foams produced by the process. 8 figures.
- Inventors:
- Issue Date:
- OSTI Identifier:
- 7085424
- Patent Number(s):
- 5066684
- Application Number:
- PPN: US 7-535007
- Assignee:
- Dept. of Energy, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-48
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 8 Jun 1990
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; FOAMS; FABRICATION; POROUS MATERIALS; CROSS-LINKING; DENSITY; EPOXIDES; PORE STRUCTURE; RESINS; CHEMICAL REACTIONS; COLLOIDS; DISPERSIONS; MATERIALS; MICROSTRUCTURE; ORGANIC COMPOUNDS; ORGANIC OXYGEN COMPOUNDS; ORGANIC POLYMERS; PETROCHEMICALS; PETROLEUM PRODUCTS; PHYSICAL PROPERTIES; POLYMERIZATION; POLYMERS; 360601* - Other Materials- Preparation & Manufacture
Citation Formats
LeMay, J D. Low density microcellular foams. United States: N. p., 1991.
Web.
LeMay, J D. Low density microcellular foams. United States.
LeMay, J D. Tue .
"Low density microcellular foams". United States.
@article{osti_7085424,
title = {Low density microcellular foams},
author = {LeMay, J D},
abstractNote = {Disclosed is a process of producing microcellular foam which comprises the steps of: (a) selecting a multifunctional epoxy oligomer resin; (b) mixing said epoxy resin with a non-reactive diluent to form a resin-diluent mixture; (c) forming a diluent containing cross-linked epoxy gel from said resin-diluent mixture; (d) replacing said diluent with a solvent therefore; (e) replacing said solvent with liquid carbon dioxide; and (f) vaporizing off said liquid carbon dioxide under supercritical conditions, whereby a foam having a density in the range of 35-150 mg/cc and cell diameters less than about 1 [mu]m is produced. Also disclosed are the foams produced by the process. 8 figures.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1991},
month = {11}
}
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