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February 2013

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Subject:
From:
David Douthit <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, David Douthit <[log in to unmask]>
Date:
Mon, 11 Feb 2013 11:44:20 -0700
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2 questions!

1. What is the glass transition temperature (Tg) of the coating? (Do you understand the importance of this number?)

2. How long have the units been in the "field" and in what sort of environments?

David A. Douthit

On Feb 11, 2013, at 9:08 AM, Ioan Tempea wrote:

> Dear Technos,
> 
> I know many of you already advocated against it, but my pain is so big that I need to check again.
> 
> Took 3 boards from the regular production, coated with 1B31S, and passed them in our in-line washer, at 135 F and 3ft/min. Except from coating starting peeling from 2-3 component tops, everything looks well.
> Does this mean I'm OK, as I prefer touching-up the 2-3 components than doing repairs with no-clean?
> 
> What else should I check? Should I test anything else? How?
> 
> Thanks,
> 
> Ioan Tempea, ing.
> Ingénieur principal de fabrication / Senior Manufacturing Engineer
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