Thanks all for your suggestions. I will review all the recommended products.
Phil
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Whittaker, Dewey (EHCOE)
Sent: Friday, June 21, 2013 12:19 PM
To: [log in to unmask]
Subject: Re: [TN] circuit board repair materials
I don't know you two, but you have my dipoles in a bind just thinking about it. I have done a lot of engineering work on the development and use of adhesive in the Aerospace Industry. Patents and procedures aside, there is a lot of testing and environmental impacts to assess. Brian makes good points, as the both of us being old war horses, it is an uncomfortable expectation of familiarity with glue factories. If this is just filling a void, with no functional expectations then the choice is much easier. Any required functional (electrical, structural) characteristics demands more Dewey diligence in the choice of adhesives.
Dewey
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Pat Goodyear
Sent: Friday, June 21, 2013 8:26 AM
To: [log in to unmask]
Subject: Re: [TN] circuit board repair materials
Phil,
I use Barco Bond M-100X as the base, I also will grind up some circuit board to add to the adhesive to give the fill some board body if the
area is large. There is usually some unused portion of the board that
using a rasp one can obtain enough filler material to do the job to add
it to adhesive. You can also mill out the area, and using a piece of
scrap board mill a patch and epoxy it in place. I have done it both ways and it depends on the size of the divot.
Pat Goodyear
On Fri, Jun 21, 2013 at 6:20 AM, Nutting, Phil wrote:
> Good morning all,
>
> This is a question regarding the repair of FR-4 after there has been a
> high voltage arc/burn. In a recent failure we ground out all the
> burned material and "repaired" the board with 5 minute epoxy. This is
> on a pancake connector for a 160kV x-ray tube. I am of the opinion
> that 5 minute epoxy will soon fail as it does not have the same
> insulating characteristics as the base FR-4.
>
> I see that Circuit Technology carries all sorts of repair
> materials/kits. So, if you were to salvage a burnt circuit board that
> had to ship right away, what materials would you use?
>
> Off line replies are accepted if you want to protect your sources or
> don't want to "advertise" on Technet.
>
> Thanks in advance for your wealth of information,
>
> Phil Nutting | HVP Development Engineer | Excelitas Technologies
> Corp
>
> Office: +1 978.224.4152
> 35 Congress St, Salem, MA 01970 USA
> [log in to unmask]<mailto:[log in to unmask]>
> www.excelitas.com<http://www.excelitas.com/>
>
>
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