skip to main content
DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Ultra-low density microcellular polymer foam and method

Abstract

An ultra-low density, microcellular open-celled polymer foam and a method for making such foam are disclosed. A polymer is dissolved in a heated solution consisting essentially of at least one solvent for the dissolution of the polymer in the heated solution and the phase inversion of the dissolved polymer to a liquid gel upon sufficient cooling of the heated solution. The heated solution is contained in a containment means provided with a nucleating promoting means having a relatively rough surface formed of fixed nucleating sites. The heated solution is cooled for a period of time sufficient to form a liquid gel of the polymer by phase inversion. From the gel, a porous foam having a density of less than about 12.0 mg/cm{sup 3} and open porosity provided by well interconnected strut morphology is formed.

Inventors:
;
Issue Date:
Research Org.:
Lockheed Martin Energy Syst Inc
OSTI Identifier:
203874
Patent Number(s):
5,500,450
Application Number:
PAN: 8-417,366
Assignee:
Dept. of Energy, Washington, DC (United States)
DOE Contract Number:  
AC05-84OR21400
Resource Type:
Patent
Resource Relation:
Other Information: PBD: 19 Mar 1996
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; FOAMS; SYNTHESIS; POLYMERS; SOL-GEL PROCESS; PORE STRUCTURE; PHASE TRANSFORMATIONS; NUCLEATION

Citation Formats

Simandl, R F, and Brown, J D. Ultra-low density microcellular polymer foam and method. United States: N. p., 1996. Web.
Simandl, R F, & Brown, J D. Ultra-low density microcellular polymer foam and method. United States.
Simandl, R F, and Brown, J D. Tue . "Ultra-low density microcellular polymer foam and method". United States.
@article{osti_203874,
title = {Ultra-low density microcellular polymer foam and method},
author = {Simandl, R F and Brown, J D},
abstractNote = {An ultra-low density, microcellular open-celled polymer foam and a method for making such foam are disclosed. A polymer is dissolved in a heated solution consisting essentially of at least one solvent for the dissolution of the polymer in the heated solution and the phase inversion of the dissolved polymer to a liquid gel upon sufficient cooling of the heated solution. The heated solution is contained in a containment means provided with a nucleating promoting means having a relatively rough surface formed of fixed nucleating sites. The heated solution is cooled for a period of time sufficient to form a liquid gel of the polymer by phase inversion. From the gel, a porous foam having a density of less than about 12.0 mg/cm{sup 3} and open porosity provided by well interconnected strut morphology is formed.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1996},
month = {3}
}