Composite porous media

Details Composite porous media Composite porous media

B - Operations, Transporting

01

D

B01D 39/00 (2006.01) B01D 39/20 (2006.01) B22F 3/11 (2006.01) C04B 41/45 (2006.01) C22C 1/04 (2006.01)

Patent

CA 2331596

A composite porous media (10) for either gas or liquid flow is strong and efficient, and can readily be formed in or into a wide variety of different shapes and configurations. In particular, the porous media is a composite of a metal, aerogel or ceramic foam (12) (i.e., a reticulated inter-cellular structure in which the interior cells are interconnected to provide a multiplicity of pores passing through the volume of the structure, the walls of the cells themselves being substantially continuous and non-porous and the volume of the cells relative to that of the material forming the cell walls being such that the overall density of the intercellular structure is less than about 30 percent theoretical density) the through pores of which are impregnated with a sintered powder (14) or aerogel. The thickness, density, porosity and porous characteristics of the final composite porous media (10) can be varied to conform with what is demanded by the intended use.

L'invention concerne un milieu (10) poreux composite pour écoulement gazeux ou liquide, qui est résistant et efficace, et peut être façonné facilement selon une grande variété de formes et de configurations différentes. En particulier, le milieu poreux est un composite de métal, d'aérogel ou de mousse (12) céramique (c.-à-d. une structure intercellulaire réticulée dans laquelle les cellules intérieures sont interconnectées de façon à constituer de multiples pores traversant le volume de la structure, les parois des cellules elles-mêmes étant sensiblement continues et non poreuses, et le volume des cellules par rapport à celui de la matière formant les parois des cellules étant tel que la densité globale de la structure intracellulaire est inférieure à environ 30 pour cent de la densité théorique) dont les pores traversants sont imprégnés d'une poudre (14) frittée ou d'aérogel. L'épaisseur, la densité, la porosité et les caractéristiques poreuses du milieu (10) poreux composite final peuvent être modifiées en fonction de l'utilisation prévue.

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