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New heatsink material maybe?

Discussion in 'Overclocking & Cooling' started by GeezerButler, 10 Mar 2010.

  1. GeezerButler

    Wise Guy

    Joined: 10 Mar 2005

    Posts: 1,777

    Wonder when we will se a TRUE made out of this - MIT scientists transform polyethylene into a heat-conducting material. And it only conducts heat in ONE direction - potential for making a directional heatsink?


  2. mod1fied


    Joined: 11 Dec 2007

    Posts: 639

    Location: Borstal, Kent

    Without fully reading the article, how do you get rid of the heat? Surely it has a limit of how much heat it can conduct.

    Or have I got the wrong end of the stick.
  3. bhavv


    Joined: 14 Nov 2009

    Posts: 13,645

    I dont think you can make fins out of that stuff, only one big lump or it would just break easilly.
  4. JonJ678


    Joined: 22 Dec 2008

    Posts: 10,371

    Location: England

    Polyethylene has a conductivity of 0.4 to 0.5 in standard units, the link thinks they've manged three hundred times this so 150. That's significantly below aluminium and below copper but still a good achievment.

    It'll be brittle, inclined to split along the conducting direction. Wont be possible to injection mould it, or heat treat it. In short it'll be hell to work with.

    More important, conduction isn't so important in current heatsinks. The heatpipes act to move heat along their length far more effectively than solid copper round. Hence most of them being aluminium.