Microcellular thermoplastic foamed with supercritical fluid

Details Microcellular thermoplastic foamed with supercritical fluid Microcellular thermoplastic foamed with supercritical fluid

1991-04-05

1992-10-27

Welsh, Maurice J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Cellular products or processes of preparing a cellular...

521 97, 264 50, C08J 900

Patent

active

051589869

ABSTRACT:
A supermicrocellular foamed material and a method for producing such material, the material to be foamed such as a polymerplastic material, having a supercritical fluid, such as carbon dioxide in its supercritical state, introduced into the material to form a foamed fluid/material system having a plurality of cells distributed substantially throughout the material. Cell densities lying in a range from about 10.sup.9 to about 10.sup.15 per cubic centimeter of the material can be achieved with the average cell sizes being at least less than 2.0 microns and preferably in a range from about 0.1 micron to about 1.0 micron.

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patent: 4906672 (1990-03-01), Stone et al.
LeMay, J. D. et al. "Low-Density Microcellular Materials", MRS Bulletin, Dec. 1990, pp. 19-45.

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