composite materials for preparation Method

The present invention relates to a method for preparing a masterbatch or of a composite based on carbon nanotubes, said method comprising mixing carbon nanotubes in powder form and at least one thermoplastic polymer matrix and / or elastomer in powder form; and implementing said mixture in a solid physical form agglomeree.Elle also relates to the masterbatch and the composite thus obtained, and the use of the masterbatch for imparting at least one electrical, mechanical and / or to heat a polymeric material.