Black "goo" on copper

[chadgm]

I have a copper material that has a black "goo" on it. I have sent a sample into a material lab and the information comes back as a carbon, oxygen, silicone material. I have used mineral spirits on it and that removes maybe 70% of the goo but not all and then the spirits are full and no more cleaning effect ,also, new spirits do not remove the rest of the goo.
Now, I have also use m.e.k nothing, used a Turpin tine -, nothing, laquer thinner - nothing. All these approximate time in dwell about 5 hours

I tried a product called la awesome, this product did shrink the goo but not "eat" or clean without rubbing action. This stuff is also kinda soapy.

Any other thoughts?

 

[Kira]

Hmmm......."a copper material" is suspiciously lacking in specificity.
Is it a part of something or a bit of material awaiting purpose?
Did it develope this goo in or near water?

 

[DCDG]

I have a copper material that has a black "goo" on it. I have sent a sample into a material lab and the information comes back as a carbon, oxygen, silicone material. I have used mineral spirits on it and that removes maybe 70% of the goo but not all and then the spirits are full and no more cleaning effect ,also, new spirits do not remove the rest of the goo.
Now, I have also use m.e.k nothing, used a Turpin tine -, nothing, laquer thinner - nothing. All these approximate time in dwell about 5 hours

I tried a product called la awesome, this product did shrink the goo but not "eat" or clean without rubbing action. This stuff is also kinda soapy.

Any other thoughts?

what is this copper?

wire, pipe?

 

[vwmaniaman]

have you tried vinegar or baking soda?

 

[DCDG]

may need to use a caustic base bath or a fluoride base cleaner

 

[chadgm]

Hmmm......."a copper material" is suspiciously lacking in specificity.
Is it a part of something or a bit of material awaiting purpose?
Did it develope this goo in or near water?

This material is by itself. I believe the goo is out there by the manufacturing process

 

[chadgm]

have you tried vinegar or baking soda?

No, not sure how those two would work, if used together would cancel each other due to the vinegar being acid and the baking soda being a base.

 

[chadgm]

may need to use a caustic base bath or a fluoride base cleaner

What would a fluoride base cleaner be? Meaning a name of such cleaner and a possible place to buy said material?

 

[DCDG]

https://www.homedepot.com/p/Motsenb...m-and-Silicone-Caulk-Remover-411-16/202103458

or Google silicone digester.

 

[Kestas]

Silicone or silicon? Many people confuse the two. Silicone cannot be remove with common solvents. It must be wiped away. I worked in a lab that used silicone on the instruments that needed to be cleaned after every use. Silicone grease was a pain to remove.

Was EDS (Energy Dispersive Spectroscopy) used to analyze the material?