Heatsink Adhesive

Discussion in 'Computing and Networks' started by Dave, May 27, 2007.

  1. Dave

    Thread Starter Retired Moderator

    Nov 17, 2003
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    Today I heard a rattling in my laptop (just as it goes out of warranty!), so on opening it up I see that the heat sink from the top of the graphics chip package has come off. Up on inspection I see the adhesive is no longer sticky, so it needs cleaning down and resetting.

    Any suggestions on a suitable adhesive for resetting the heatsink to the top of the graphics chip package? I did use to have a tube of something a friend gave me (heaven knows what is was, but it worked), but in recent time it seems to have gone AWOL.

    Dave
     
  2. recca02

    Senior Member

    Apr 2, 2007
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  3. Dave

    Thread Starter Retired Moderator

    Nov 17, 2003
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    Tell me about it! :rolleyes:

    Thanks for the links. Have you any experinece of any particular heatsink adhesive that you recommend (or not as the case may be)?

    Dave
     
  4. recca02

    Senior Member

    Apr 2, 2007
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    i m clueless about this and have only small idea about silicone gel for processors,
    ppl here might have a better understanding,
    maybe i will send a get well soon card for u'r laptop
     
  5. thingmaker3

    Retired Moderator

    May 16, 2005
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  6. n9352527

    AAC Fanatic!

    Oct 14, 2005
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    You could either use thermal adhesive pads, there are many of them around, like item 1211707 at Farnell. Or, use thermal adhesive like loctite thingmaker suggested above or Arctic alumina or silver if you have too much money :D

    I prefer to use the pads because they could be removed fairly easily if needed, unlike the adhesive.
     
  7. Dave

    Thread Starter Retired Moderator

    Nov 17, 2003
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    Ok thanks, I await the card!

    Thanks for the suggestions. I have heard of Loctite before, but like yourself have no experience of using their (thermal) products. I lack the skills to make-up my own adhesive, I think I'll need to take a simple squeeze-and-apply method! I'll do a bit of Googling for Loctite and see what it shells up.

    Ah, theres something I haven't thought about - adhesive pads. Removing the adhesive from the top of the package will be interesting and the pads method seems a good approach for the future. And at 88p per unit I can live with that!

    Thanks to everyones input, further comments are welcome.

    Dave
     
  8. mrmeval

    Distinguished Member

    Jun 30, 2006
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    There are several good ones. They make them with a variety of materials. I'm familiar with aluminum oxide powder mixed with an epoxy for just that use. I've also worked with polysulfide (ick danger run) and silver coated copper powder and the same powder with one of DOW cornings commercial silicone RTV offerings (NOT the stuff at the store).

    The intek stuff looks pretty good. This one, not the first one
    http://www.intek-uk.com/RTV1073.htm
     
  9. Dave

    Thread Starter Retired Moderator

    Nov 17, 2003
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    Thanks for the recommendations. As I stated previously, I think I need a simple squeeze-and-apply method, or having looked at n9352527's suggestion, just using adhesive pads.

    As a side curiosity, I have been looking for a suitable material for a development temperature jig I have been making at work, and had a tech spec for thermal conductivity and temp range - the above adhesive spec would have been perfect, its just a pity it doesn't come in 3mm I/D and 5mm O/D tube.

    Dave
     
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