THERMALLY CONDUCTIVE COMPOSITES AND METHODS OF MANUFACTURE THEREOF, AND ARTICLES CONTAINING THE COMPOSITES
A thermally conductive composite includes a polymer; and boron nitride, wherein the boron nitride is in a form of a nanofiber, a nanotube, a nanoplate, or a combination thereof. Alternatively, a thermally conductive composite includes a boron nitride comprising pores; and a polymer disposed in a pore of the boron nitride.
1 . A thermally conductive composite comprising:
a polymer; and
boron nitride, wherein the boron nitride is in a form of a nanofiber.
2 . (canceled)
3 . The thermally conductive composite of claim 1 , wherein the nanofiber is in a woven form.
4 . The thermally conductive composite of claim 1 , wherein the boron nitride nanofiber has a cross-sectional dimension of 1 to 100 nanometers.
5 . The thermally conductive composite of claim 1 , wherein the boron nitride nanofiber has a length of 100 nanometers to 10 millimeters.
6 . The thermally conductive composite of claim 1 , wherein the boron nitride nanofiber has an aspect ratio of 10 to 1,000,000.
7 . The thermally conductive composite of claim 1 , wherein the boron nitride nanofibers extends in a direction substantially perpendicular to a major surface of the polymer layer.
8 . A thermally conductive composite comprising:
a boron nitride comprising pores; and
a polymer disposed in a pore of the boron nitride.
9 . The thermally conductive composite of claim 8 , wherein the boron nitride has an average pore size of 5 to 1000 nanometers.
10 . The thermally conductive composite claim 8 , wherein the boron nitride is a doped boron nitride.
11 . The thermally conductive composite of claim 8 , wherein the composite is in the form of a layer.
12 . A method of manufacturing the thermally conductive composite of claim 1 , the method comprising:
combining a polymer or a pre-polymer composition with the boron nitride nanofibers and a solvent to form a mixture;
casting the mixture to form a layer; and
removing the solvent to manufacture the thermally conductive composite.
13 . The method of claim 12 , further comprising crosslinking the polymer.
14 . The method of claim 12 , further comprising foaming the polymer.
15 . The method of claim 12 , wherein the boron nitride is a porous boron nitride.
16 . A circuit material comprising the thermally conductive composite of claim 1 , optionally disposed on a conductive layer.
17 . A printed circuit board comprising the thermally conductive composite of claim 1 , optionally disposed on a conductive layer.
18 . A circuit material comprising the thermally conductive composite of claim 8 , optionally disposed on a conductive layer.
19 . The thermally conductive composite claim 1 , wherein the boron nitride is a doped boron nitride.
20 . The method of claim 12 , further comprising polymerizing the prepolymer composition.
21 . The method of claim 15 , further comprising polymerizing the pre-polymer composition in a pore of the porous boron nitride.