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Title: Mold process for making nanofoam

Abstract

Prepare nanofoam by: (a) providing a mold (10) with a mold cavity (12) defined by mold walls defining a sealable port (32); (b) providing a foamable polymer mixture containing a polymer and a blowing agent at a pressure at least 690 kilopascals above the saturation pressure for the polymer and blowing agent; (c) introducing the foamable polymer mixture into the mold cavity (12) while maintaining a temperature and pressure at least 690 kilopascals above the saturation pressure and controlling the pressure in the mold cavity (12) by expanding a wall of the mold; and (d) releasing pressure around the foamable mixture by moving a mold wall (20) at a rate of at least 45 centimeters per second, causing the foamable polymer mixture to expand into nanofoam having a porosity of at least 60 percent, a volume of at least 100 cubic centimeters and at least two orthogonal dimensions of four centimeter or more.

Inventors:
; ; ;
Issue Date:
Research Org.:
Dow Global Technologies LLC, Midland, MI (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1568473
Patent Number(s):
10,322,534
Application Number:
15/121,604
Assignee:
Dow Global Technologies LLC (Midland, MI)
DOE Contract Number:  
EE0003916
Resource Type:
Patent
Resource Relation:
Patent File Date: 05/20/2015
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 42 ENGINEERING; 77 NANOSCIENCE AND NANOTECHNOLOGY

Citation Formats

Costeux, Stphane, Beaudoin, Daniel A., Kim, Hyunwoo, and Foether, Devin A. Mold process for making nanofoam. United States: N. p., 2019. Web.
Costeux, Stphane, Beaudoin, Daniel A., Kim, Hyunwoo, & Foether, Devin A. Mold process for making nanofoam. United States.
Costeux, Stphane, Beaudoin, Daniel A., Kim, Hyunwoo, and Foether, Devin A. Tue . "Mold process for making nanofoam". United States. https://www.osti.gov/servlets/purl/1568473.
@article{osti_1568473,
title = {Mold process for making nanofoam},
author = {Costeux, Stphane and Beaudoin, Daniel A. and Kim, Hyunwoo and Foether, Devin A.},
abstractNote = {Prepare nanofoam by: (a) providing a mold (10) with a mold cavity (12) defined by mold walls defining a sealable port (32); (b) providing a foamable polymer mixture containing a polymer and a blowing agent at a pressure at least 690 kilopascals above the saturation pressure for the polymer and blowing agent; (c) introducing the foamable polymer mixture into the mold cavity (12) while maintaining a temperature and pressure at least 690 kilopascals above the saturation pressure and controlling the pressure in the mold cavity (12) by expanding a wall of the mold; and (d) releasing pressure around the foamable mixture by moving a mold wall (20) at a rate of at least 45 centimeters per second, causing the foamable polymer mixture to expand into nanofoam having a porosity of at least 60 percent, a volume of at least 100 cubic centimeters and at least two orthogonal dimensions of four centimeter or more.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2019},
month = {6}
}

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Works referenced in this record:

Nanoporous polymeric foam having high cell density without nanofiller
patent, November 2015


Phosphorous-containing aluminum carboxylate salt flame retardants
patent, May 2016


Injection molding of polymeric material
patent, April 2005


Microcellular closed cell foams and their method of manufacture
patent, September 1984


Nanocellular thermoplastic foam and process for making the same
patent, September 2015


Continuous process for extruding nanoporous foam
patent, September 2015


Microcellular thermoplastic foamed with supercritical fluid
patent, October 1992