Supermicrocellular foamed materials

C - Chemistry – Metallurgy – 08 – J

Patent

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Details

C08J 9/12 (2006.01) B29B 7/00 (2006.01) B29C 44/00 (2006.01) B29C 44/34 (2006.01) B29C 67/20 (2006.01)

Patent

CA 2107355

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 roamed fluid/material system having a plurality of cells distributed substantially throughout the material. Cell densities lying in a range from about 10 9 to about 10 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.

Matériau supermicrocellulaire en mousse et procédé de fabrication dudit matériau. On introduit dans le matériau conçu pour former une mousse, tel qu'un polymère plastique, un fluide sucritique, tel qu'un dioxyde de carbone en état surcritique, afin de constituer un système composé dudit matériau et du fluide moussant et pourvu d'une pluralité de cellules réparties sensiblement dans la totalité dudit matériau. On peut obtenir des densités cellulaires situées dans une plage de 109 à 105 environ par centimètre cube du matériau, les dimensions cellulaires moyennes étant au moins inférieures à 2,0 microns et situées, de préférence, dans une plage de 0,1 micron à 1,0 micron environ.

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