Re: vapor deposition of urethane castings

From: Doug Groh (douggroh@rapid.com)
Date: Mon Feb 05 2001 - 16:57:43 EET


That , too was a good suggestion for sheilding, and it is also used for
Chromeplating!

Doug Groh

"Eifert, Dan" wrote:

> Bruce,
>
> Depending on the application you could apply a conductive paint as well. I
> have used Choflex 601 from Chomerics as a shield layer for flex circuitry
> (polyimide film). It has excellent adhesion and provided nearly as much
> shielding as copper foil, more when you consider the paint coats edges and
> all voids. It is a silver loaded polyurethane. Contact Ron Sacuzzo at
> (800) 225-1936 if you are interested.
>
> -
> Dan Eifert
> Electronic Packaging
> Lockheed Martin M&FC-Orlando
> Ph - 407/356-5789
> Fax - 407/356-6725
> Email - dan.eifert@lmco.com
>
> -----Original Message-----
> From: Bruce [mailto:lemaster@artcorp.com]
> Sent: Monday, February 05, 2001 10:10 AM
> To: RP-ML (E-mail)
> Subject: vapor deposition of urethane castings
>
> Hello,
>
> Can any of you provide contacts for vapor depositing urethane? We have a
> customer that would like to create an RF shield on their prototypes and we
> believe that vapor deposition would be the best route. As an alternative,
> has anyone had success using "filled urethanes" to create conductive
> castings? We have tried using carbon black on several occasions with mixed
> results. Typically, the amount of carbon black required to achieve any
> conductivity is so high that the urethane/carbon mixture becomes a thick
> sludge and will not flow into the molds.
>
> Thanks for your help,
>
> Bruce E. LeMaster
>
> Applied Rapid Technologies Corporation
> 265 Cambridge Street, Suite 100
> Fredericksburg, Virginia 22405
> (540)371-1100 / (540)371-4100 fax
> http://www.artcorp.com
>
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>
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