Method of forming a foamed thermoplastic polymer
Abstract
A method of forming a foamed thermoplastic polymer. A solid thermoplastic lymer is immersed in an immersant solution comprising a compatible carrier solvent and an infusant solution containing an incompatible liquid blowing agent for a time sufficient for the immersant solution to infuse into the polymer. The carrier solvent is then selectively extracted, preferably by a solvent exchange process in which the immersant solution is gradually diluted with and replaced by the infusant solution, so as to selectively leave behind the infusant solution permanently entrapped in the polymer. The polymer is then heated to volatilize the blowing agent and expand the polymer into a foamed state.
- Inventors:
-
- Los Alamos, NM
- Issue Date:
- Research Org.:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- OSTI Identifier:
- 865993
- Patent Number(s):
- 4613629
- Assignee:
- United States of America as represented by Department of Energy (Washington, DC)
- Patent Classifications (CPCs):
-
C - CHEMISTRY C08 - ORGANIC MACROMOLECULAR COMPOUNDS C08J - WORKING-UP
- DOE Contract Number:
- W-7405-ENG-36
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- method; forming; foamed; thermoplastic; polymer; solid; lymer; immersed; immersant; solution; comprising; compatible; carrier; solvent; infusant; containing; incompatible; liquid; blowing; agent; time; sufficient; infuse; selectively; extracted; preferably; exchange; process; gradually; diluted; replaced; leave; permanently; entrapped; heated; volatilize; expand; blowing agent; time sufficient; solution containing; solution comprising; thermoplastic polymer; exchange process; selectively extract; compatible carrier; foamed thermoplastic; solid thermoplastic; plastic polymer; liquid blowing; /521/
Citation Formats
Duchane, David V, and Cash, David L. Method of forming a foamed thermoplastic polymer. United States: N. p., 1986.
Web.
Duchane, David V, & Cash, David L. Method of forming a foamed thermoplastic polymer. United States.
Duchane, David V, and Cash, David L. Wed .
"Method of forming a foamed thermoplastic polymer". United States. https://www.osti.gov/servlets/purl/865993.
@article{osti_865993,
title = {Method of forming a foamed thermoplastic polymer},
author = {Duchane, David V and Cash, David L},
abstractNote = {A method of forming a foamed thermoplastic polymer. A solid thermoplastic lymer is immersed in an immersant solution comprising a compatible carrier solvent and an infusant solution containing an incompatible liquid blowing agent for a time sufficient for the immersant solution to infuse into the polymer. The carrier solvent is then selectively extracted, preferably by a solvent exchange process in which the immersant solution is gradually diluted with and replaced by the infusant solution, so as to selectively leave behind the infusant solution permanently entrapped in the polymer. The polymer is then heated to volatilize the blowing agent and expand the polymer into a foamed state.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Jan 01 00:00:00 EST 1986},
month = {Wed Jan 01 00:00:00 EST 1986}
}
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