Re: Question regarding using epoxy or RTV on PCBs

D from BC wrote:

I just use whatever clear silicone is at the hardware store. I do smell the acetic acid in silicone. Did you know you can make copper bright and shiney in vinegar? Vinegar has acetic acid..
So I wasn't worried too much about home silicone containing some "Alien" acid that would eat through the floor.
If there are corrosives in the RTV..the reactivity I believe is limited and reduces to nothing after cure. Some microscopic copper loss can be tolerated.
I don't like the RTV slow cure time and the hot glue suggestion below from another poster is something I use frequently.


----- SNIPped ------
"After cure" is a mistake!!!
The stuff is always curing, even months after application!
That is why it is vital to use the Silicone II which does not generate acetic acid.
Acetic acid will attack everything; the resulting corrosion will be impossible to stop and the circuit will not last or be repairable afterwards.
.

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    ... do smell the acetic acid in silicone. ... Did you know you can make copper bright and shiney in vinegar? ... Vinegar has acetic acid.. ... So I wasn't worried too much about home silicone containing some ...
    (sci.electronics.design)