Epoxy for heatsink

[JohnR66]

I have a 16 pin DIP stereo amplifier IC. On one side, all the pins are dedicated to heatsinking. I don't have the room to provide adequate heatsinking on the board, so I want to epoxy a copper or aluminum plate to the IC itself to augment the heatsinking. I have two part clear epoxy. I wonder if it is adequate to use? Thermal conductivity is not paramount, but keeping the heatsink put is.
Thanks

 

[reptiles]

Hi I believe this might be what you need:

http://www.arcticsilver.com/arctic_alumina_thermal_adhesive.htm

Cheers,

Mark

 

[DonShock]

I've used JB weld to pot both drivers and LEDs to heatsinks when I was out of the Arctic Silver adhesive. I've never noticed any degraded performance. As long as you keep the amount as small as possible, I would think the clear epoxy should work. The only drawback I can think of is the different material expansion rates of the chip and the sink. It's possible the flex between the parts could eventually crack the epoxy loose.