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):
- 10322534
- Application Number:
- 15/121,604
- Assignee:
- Dow Global Technologies LLC (Midland, MI)
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B29 - WORKING OF PLASTICS B29C - SHAPING OR JOINING OF PLASTICS
B - PERFORMING OPERATIONS B29 - WORKING OF PLASTICS B29K - INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR {MOULDS, } REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- 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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