I never knew there was a society of cosmetic chemists.

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Inge Hernefjord
Sent: Wednesday, September 14, 2011 3:33 AM
To: [log in to unmask]
Subject: Re: [TN] Pneumatic Syringes and ESD

Doug,

Triboelectric means adding or stealing electrons through friction. How
can a
uncured glue (liquid with a high viscosity) move electrons from your
nozzle?
I've been in the game for decades and not heard about such things. I've
participated in p-p courses, glue courses, read lots of articles etc,
but
missed what you insist.

Human and dry hair has a molecular crystal-like surface, and via the
Fermi
level you can move electrons from the orbit. However, if your hair is
fat,
there will be no charge movements, because the fat has no specific
surface
for that purpose. Likewise, I thought uncured glues were no aspirants
either.

Well, never too late to learn something new.

Inge

 Relationship between *triboelectric* charging and surface *...*
<http://search.mywebsearch.com/mywebsearch/redirect.jhtml?qid=62bac059e5
f09cb4c1291b201f0024f4&searchfor=kinetic+explanation+of+triboelectric+ch
arges&action=pick&pn=1&n=77decd8b&ptb=naCNCR5Azm75RkmBmXss1w&ptnrS=ZRxdm
784YYSE&ss=&st=hp&cb=ZR&pg=GGmain&ord=4&tpr=hpsb&redirect=mPWsrdz9heamc8
iHEhldEWVlFOy8LXVdR6PzojpERxbLlEmRQOowS8Qj5BmJGVqQkswtwN%2FH7EAkxVp0REdx
DZ8QU9G9gHdhVQrRQ2vn%2FnU%3D&ct=AR>
bleaching, and oxidative dyeing has only a small effect on
*triboelectric*charging. Measurements of the
*kinetics* of *charge* decay indicate that none of these *...*
http://journal.scconline.org/pdf/cc1985/cc036n03/p00189-p00212.pdf -
Cached<http://search.mywebsearch.com/mywebsearch/redirect.jhtml?redirect
=GGcached.jhtml&action=click&searchfor=kinetic%2Bexplanation%2Bof%2Btrib
oelectric%2Bcharges&curl=http%3A%2F%2Fjournal.scconline.org%2Fpdf%2Fcc19
85%2Fcc036n03%2Fp00189-p00212.pdf&isDirResults=false&tpr=hpsb&cid=KYJrE_
TQtsAJ&ptnrS=ZRxdm784YYSE&st=hp&ptb=naCNCR5Azm75RkmBmXss1w&ct=GC&pg=GGma
in&n=77decd8b>




On 13 September 2011 20:06, Douglas Pauls
<[log in to unmask]>wrote:

> The coating is insulative in its liquid state as well.
>
> Doug Pauls
>
>
>
> "Mike Fenner" <[log in to unmask]>
> 09/13/2011 12:48 PM
> Please respond to
> <[log in to unmask]>
>
>
> To
> "'TechNet E-Mail Forum'" <[log in to unmask]>,
<[log in to unmask]>
> cc
>
> Subject
> RE: [TN] Pneumatic Syringes and ESD
>
>
>
>
>
>
> You would have to check with supplier, or verify it yourself; but
though
> the
> coating is insulating when cured it may well not be uncured in liquid
> form.
>
> Regards
>
> Mike
>
> -----Original Message-----
> From: TechNet [mailto:[log in to unmask]] On Behalf Of Douglas Pauls
> Sent: Tuesday, September 13, 2011 4:53 PM
> To: [log in to unmask]
> Subject: [TN] Pneumatic Syringes and ESD
>
> Good morning all,
>
> Time for a silly question.  The question has been raised internally as
to
> the risk of ESD generation when an acrylic conformal coating (an
> insulative material) is applied using pneumatic syringes (also an
> insulative material), through a nylon brush (a third synthetic
material).
>
> 1.  Do you know of any studies done benchmarking static generation
levels?
>
>  We have done some here, but want to do a sanity check.
> 2.  If you have such devices in your facilities, what are your
mitigation
> efforts?  Air ionizers, grounded tubes?
> 3.  Does anyone use, and can recommend, ESD safe syringe bodies and
caps?
>
> Many thanks in advance.
>
> Doug Pauls
> Rockwell Collins
>
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