| abstract |
A heat pipe ( 1 ) includes a shell ( 20 ), a protective layer ( 10 ) formed on an outer surface of the shell, a wick ( 30 ) and a hydrophilic layer ( 40 ) sequentially formed on an inner surface of the shell, and a working fluid contained in the shell. A material of the shell is metal, such as copper, aluminum, or a copper-aluminum alloy. The protective layer is formed of nanomaterials, such as carbon nanotubes, nano-sized copper particles, nano-sized aluminum particles, or nano-sized particles of a copper-aluminum alloy. The wick is made from a mixture of carbon fibers and carbon nanocapsules. The hydrophilic layer is made from nanomaterials, for example, titanium dioxide, zinc oxide, alumina, or any mixture thereof. |