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From: email@example.com (Gibbo)
Date: 12 Nov 2002 20:39:16 GMT
Organization: AOL, http://www.aol.co.uk
Subject: Re: Potting/Encapsulating - Epoxy ontop of Silicone?
firstname.lastname@example.org (Jumbaliah) wrote:
>Thanks for the tip, I do like to save money. How long would the
>silicone take to cure? A few days? I guess it depends on the depth I
This was something else I looked at in the potting experiments. Remeber that
I'm in the uk and these took place it about 18'C average (from daytime 21 to
nightime 16) and relatively high humidity (we like to call it dampness here cos
it usually goes hand in hand with cold).
These were tried in a potting box about 1 inch square at varying depths.
2 mm depth took about 16 hours to cure *completely*. It seemed to be cured
after about 6 hours but was still releasing acetic acid 10 hours later (relied
on sense of smell - not very technical I know).
5 mm took about 24 hours to cure completely.
1cm seemed ok after 48 hours but breaking it apart produced the acetic acid
smell in the middle. 1cm depth didn't cure completely til at least 4 days
I also tried 2 cm. That still hasn't cured (2 weeks later)
I suspect increased temperature and/or reduced humidity will reduce these cure
times but I'm no chemist so I can't say for sure.
I certainly wouldn't attempt anything greater than 1cm in a single go. I'd make
it 2 stage.
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