Debond epoxy

Pbassred · 5th April 2004, 04:01 PM

I have a situation at work. We have several heatsinks which need to be removed from ICs. The adhesive is Loctite 315 which is actually a modified Acrylic. I need to weaken the bond before I start leaveing it off. Loctite swears that nothing exists. but I know that Jewellers use a solvent for epoxy. Does anyone know of something available in the UK?

johnnyx · 5th April 2004, 09:40 PM

Contact the manufacturers, Loctite, they would be best placed to advise. They may be helpful.
It's a tough one, if the chips are scrap and you just want the heatsinks, then you could try high temperatures, everything burns at some point. I had an epoxy - potted amp that was relatively easy to seperate from it's heatsink after it burnt out.

Magura · 5th April 2004, 09:48 PM

The 315 will go soft at around 280 C

Magura

Elso Kwak · 5th April 2004, 10:10 PM

Quote:

Originally posted by Pbassred
I have a situation at work. We have several heatsinks which need to be removed from ICs. The adhesive is Loctite 315 which is actually a modified Acrylic. I need to weaken the bond before I start leaveing it off. Loctite swears that nothing exists. but I know that Jewellers use a solvent for epoxy. Does anyone know of something available in the UK?

Try boiling undiluted antifreeze for cars. Beware that is very hot as the solder melts!

Chemical name: glycerol, boiling point 290 C.

dayvel · 6th April 2004, 10:57 PM

If it's acrylic, try soaking in free-flowing acrylic cement (the liquid kind, not the goopy kind). You should be able to get this from any shop that sells acrylic sheet. If it's epoxy, try soaking in acetone. In either case, don't breathe this stuff.

mwmkravchenko · 7th April 2004, 03:16 AM

Xylene may thin it but it is very not good for you. Go with the heat idea. It will work as long as your not trying to save the chips.

Mark

Peter Daniel · 7th April 2004, 04:38 AM

It is my experience that the best approach to break the epoxy bond is to simply bang it with a hammer and it will just go off

5th April 2004, 04:01 PM	#1
Pbassred diyAudio Member Join Date: Nov 2003 Location: N London	Debond epoxy I have a situation at work. We have several heatsinks which need to be removed from ICs. The adhesive is Loctite 315 which is actually a modified Acrylic. I need to weaken the bond before I start leaveing it off. Loctite swears that nothing exists. but I know that Jewellers use a solvent for epoxy. Does anyone know of something available in the UK? __________________ Jeeees! I only asked www.davethebass.com

5th April 2004, 09:48 PM	#3
Magura diyAudio Member Join Date: Oct 2003 Location: Denmark, Viborg	The 315 will go soft at around 280 C Magura __________________ Everything is possible....to do the impossible just takes a little while longer. www.class-a-labs.com

7th April 2004, 03:16 AM	#6
mwmkravchenko diyAudio Member Join Date: Jan 2002 Location: Perth Canada	Asolvent that may work Xylene may thin it but it is very not good for you. Go with the heat idea. It will work as long as your not trying to save the chips. Mark __________________ Mark

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5th April 2004, 09:40 PM	#2
johnnyx diyAudio Member Join Date: Jan 2004 Location: manchester	Contact the manufacturers, Loctite, they would be best placed to advise. They may be helpful. It's a tough one, if the chips are scrap and you just want the heatsinks, then you could try high temperatures, everything burns at some point. I had an epoxy - potted amp that was relatively easy to seperate from it's heatsink after it burnt out.

6th April 2004, 10:57 PM	#5
dayvel diyAudio Member Join Date: Nov 2003 Location: Martinez CA	If it's acrylic, try soaking in free-flowing acrylic cement (the liquid kind, not the goopy kind). You should be able to get this from any shop that sells acrylic sheet. If it's epoxy, try soaking in acetone. In either case, don't breathe this stuff.

7th April 2004, 04:38 AM	#7
Peter Daniel diyAudio Member Join Date: Jul 2002 Location: Toronto, Canada	It is my experience that the best approach to break the epoxy bond is to simply bang it with a hammer and it will just go off

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