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April 2007

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Subject:
From:
Reuven Rokah <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Reuven Rokah <[log in to unmask]>
Date:
Tue, 10 Apr 2007 15:12:07 +0300
Content-Type:
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text/plain (168 lines)
Thanks Doug,

Regarding fungus food, may be using cleaning process after soldering
will reduce the organic food. 

Best Regards
Reuven ROKAH 
e mail: [log in to unmask]


-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Douglas O. Pauls
Sent: Tuesday, April 10, 2007 2:53 PM
To: [log in to unmask]
Subject: Re: [TN] Fongus treatment

Brian and Reuven,
Many aircraft materials are required these days to be "non-nutrient" or
to
contain nothing that a fungus would consider to be food, thereby
encouraging growth.  Some coatings go a step further by incorporating a
biocidal agent.  I know that sometimes our units come back into the
service
centers with green fuzzy layers growing on them from pilots spilling
coffee
with cream and sugar, or sugared soft drinks, which gives the fungus
(damn
spores are everywhere) something to feed upon.  Having biocidal material
built in can be a more active defense against fungus growth.

Doug Pauls



 

             Brian Ellis

             <[log in to unmask]>

             Sent by: TechNet
To 
             <[log in to unmask]>         [log in to unmask]

 
cc 
 

             04/10/2007 04:57
Subject 
             AM                        Re: [TN] Fongus treatment

 

 

             Please respond to

              TechNet E-Mail

                   Forum

             <[log in to unmask]>

             ; Please respond

                    to

                Brian Ellis

             <[log in to unmask]>

 

 





Fungicides used to be added to phenol-formaldehyde lacquers, in the days
when all printed circuits were on cheap paper-based laminates (early
1950s, because the paper coating treater was poor in uniformity before
stacking prior to pressing. However, that was also in the days when
anode voltages were typically 250 V. I remember that 20 or so years ago,
some conformal coatings contained fungostats and bacteriostats, but I
haven't a clue whether they are still available. Normally, I would not
expect modern materials to support mycelia penetration, so fungostats or
fungicides should not be necessary. Beware that many fungicides are
based on ionic metal salts!

Brian

Reuven Rokah wrote:
>
> One of our potential customer is interesting with "Fungus treatment"
for
> assemblies and cables.
>
> Do you familiar with such process?
>
> Thanks
>
> Reuven
>
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