Low density microcellular foams

Patent Application · Mon Dec 31 00:00:00 EST 1990

OSTI ID:10104700

LeMay, J D

Disclosed is a process of producing microcellular from which comprises the steps of: selecting a multifunctional epoxy oligomer resin; mixing said epoxy resin with a non-reactive diluent to form a resin-diluent mixture; forming a diluent containing cross-linked epoxy gel from said resin-diluent mixture; replacing said diluent with a solvent therefore; replacing said solvent with liquid carbon dioxide; and 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.

• Research Organization: Lawrence Livermore National Lab., CA (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-48
• Assignee: Dept. of Energy
• Patent Number(s): PATENTS-US-A7535007
• Application Number: ON: DE92003744; PAN: 7-535,007
• OSTI ID: 10104700
• Resource Relation: Other Information: PBD: 1990
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
PLASTIC FOAMS
CHEMICAL PREPARATION
INVENTIONS
DENSITY
EPOXIDES
RESINS
SOLVENTS
GELS
CARBON DIOXIDE
DRYING
360601
700480
PREPARATION AND MANUFACTURE
COMPONENT DEVELOPMENT
MATERIALS STUDIES