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Title: Method of forming a foamed thermoplastic polymer

Abstract

A solid thermoplastic polymer 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 infustant 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:
;
Issue Date:
Research Org.:
Los Alamos National Lab., NM (USA)
OSTI Identifier:
5275212
Application Number:
ON: DE85017772
Assignee:
Dept. of Energy EDB-85-148098
DOE Contract Number:  
W-7405-ENG-36
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; PLASTIC FOAMS; PRODUCTION; THERMOPLASTICS; COLLOIDS; DISPERSIONS; FOAMS; MATERIALS; ORGANIC COMPOUNDS; ORGANIC POLYMERS; PETROCHEMICALS; PETROLEUM PRODUCTS; PLASTICS; POLYMERS; SYNTHETIC MATERIALS; 360401* - Polymers & Plastics- Preparation & Fabrication- (-1987)

Citation Formats

Duchane, D.V., and Cash, D.L. Method of forming a foamed thermoplastic polymer. United States: N. p., 1984. Web.
Duchane, D.V., & Cash, D.L. Method of forming a foamed thermoplastic polymer. United States.
Duchane, D.V., and Cash, D.L. Wed . "Method of forming a foamed thermoplastic polymer". United States.
@article{osti_5275212,
title = {Method of forming a foamed thermoplastic polymer},
author = {Duchane, D.V. and Cash, D.L.},
abstractNote = {A solid thermoplastic polymer 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 infustant 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 = {1984},
month = {11}
}