Method for introducing carbon particles into a polyurethane...

C - Chemistry – Metallurgy – 08 – J

Patent

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Details

C08J 7/02 (2006.01) B32B 27/40 (2006.01)

Patent

CA 2750943

The invention relates to a method for introducing electrically conductive carbon particles into a surface layer comprising polyurethane. These carbon particles can in particular be carbon nanotubes. In the method according to the invention, a solution of non-aggregated carbon particles having a mean particle diameter of >=0.3 nm to <=3000 nm acts in a solvent upon a surface layer comprising polyurethane. The solvent is able to cause the maceration of a surface layer comprising polyurethane. The dwell time is measured such that it is not sufficient to carry the polyurethane over into the solution. The invention furthermore relates to a polyurethane layer that comprises electrically conductive carbon particles and can be obtained by means of a method according to the invention. The invention likewise relates to a polyurethane object having surface layer comprising electrically conductive carbon particles, obtainable by a method according to the invention.

La présente invention concerne un procédé d'incorporation de particules de carbone électriquement conductrices dans une couche de surface comprenant du polyuréthane. Les particules de carbone peuvent notamment être des nanotubes de carbone. Selon le procédé, une solution de particules de carbone non agrégées ayant un diamètre de particule moyen = 0,3 nm et = 3 000 nm dans un solvant agit sur une couche de surface comprenant du polyuréthane. Le solvant est capable de provoquer le gonflement d'une couche de surface comprenant du polyuréthane. La durée d'action est déterminée de manière à ne pas être suffisante pour solubiliser le polyuréthane. L'invention concerne également une couche de polyuréthane qui comprend des particules de carbone électriquement conductrices et qui peut être obtenue par un procédé selon l'invention. L'invention concerne également un objet en polyuréthane qui comprend une couche de surface comprenant des particules de carbone électriquement conductrices et pouvant être obtenue par un procédé selon l'invention.

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