Patent ID: 9023477
Filing Date: 2015-05-05
Classification: B82Y,C08J,C08K,C08L,Y10S,Y10T

Abstract:
1. A method for producing a thermally conductive pad, the method comprising: (a) providing an apparatus, and a substrate with an array of carbon nanotubes formed on a surface of the substrate, wherein the array of carbon nanotubes comprises a plurality of carbon nanotubes parallel to each other and approximately perpendicular to the surface of the substrate, the apparatus comprises an upper board, a lower board, two first sideboards spaced from and facing each other, and two second sideboards spaced and facing each other; the upper board is spaced from and parallel to the lower board; the two first sideboards and the two second sideboards are located between the upper board and the lower board; the two first sideboards are configured to compress in directions parallel to a first axis; the two second sideboards are configured to compress in directions parallel to a second axis; the first axis and the second axis are perpendicular to each other and parallel to the surface of the substrate; (b) applying a liquid polymer precursor to the array of carbon nanotubes; (c) compressing the array of carbon nanotubes in a first and a second directions perpendicular to a lengthwise direction of the plurality of carbon nanotubes to form a high-density array of carbon nanotubes by the apparatus, wherein the first direction is perpendicular to the second direction; (d) polymerizing the liquid polymer precursor to form a composite material comprising a polymer matrix with the high-density array of carbon nanotubes incorporated therein; and (e) cutting the composite material in a direction traversing the lengthwise direction of the carbon nanotubes to obtain the thermally conductive pad.