...@ieee.org
Subject: Re: Conductive Paint
In message , dated Thu, 17
Dec 2009, Ernest Rayman writes:
>The goal is to fix the existing enclosures. A cold plating sounds like
>a good area to investigate.
These 'electroless' platings (various metals, some much cheaper than
silver) are a
What about copper tape with conductive adhesive? I would think the
adhesive would protect the metal if this is a pressure point (say cover
screws maybe?).
Scott Douglas
Ernest Rayman wrote:
> We had en enclosure built and the sheet metal people powder coated every
metal to metal contact surface
In message , dated Thu, 17
Dec 2009, Ernest Rayman writes:
>The goal is to fix the existing enclosures. A cold plating sounds like
>a good area to investigate.
These 'electroless' platings (various metals, some much cheaper than
silver) are a 'black art', so make sure you find an expert compa
people in the world-those who understand binary
and those who don't. J. Paxman
From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of Ernest
Rayman
Sent: 17 December 2009 15:34
To: emc-p...@ieee.org
Subject: RE: Conductive Paint
*** WARNING ***
This messa
the existing enclosures. A cold plating sounds like a good
area to investigate.
Thank you,
> Subject: RE: Conductive Paint
> Date: Thu, 17 Dec 2009 07:15:34 -0800
> From: ed.pr...@cubic.com
> To: emc-p...@ieee.org
>
>
>
>
>
>
>
Ernie:
Yes, conductive paints are best reserved for when other factors dictate their
use. Adhesion is tricky, the paint provides no gap-filling effect, and
mechanical wear is a problem too.
The first question to answer is how often the customer will need to open and
close the mating surface
I have used "Galvafroid" on steel.
It is a paint that uses a high content of colloidal zinc particles in
the paint. It works best as a seal when the parts are assembled while
the paint is still tacky. Any other form of high metal content paint
should also work well.
I have also used "Copper Slip"
_
From: John Kretsch [mailto:emc-p...@ip-ce.com]
Sent: Thursday, April 27, 2006 8:03 PM
To: emc-p...@ieee.org
Subject: Conductive Paint Provide Decent Shielding Effectiveness?
This topic has come up regarding painting the inside of a plastic housing with
something like Electrodag550
Hi John and the group,
How the shielding effectiveness is measured determines the value one
gets. If you are trying to shield one part of a board from another,
for instance in a mobile phone, the plane wave numbers that are
published are not very useful for such near field conditions.
For case
One of the more durable I had used in the notebook industry was an Enthone
coating, Nickel over Copper.
While the shielding effectiveness claims were rather good from most conductive
coating vendors, the actual application would never achieve close to the
claim. The issue being that a conductive
-0636
(908)582-6937
From: emc-p...@ieee.org [mailto:emc-p...@ieee.org]On Behalf Of Grasso, Charles
Sent: Friday, April 28, 2006 3:54 PM
To: John Kretsch; emc-p...@ieee.org
Subject: RE: Conductive Paint Provide Decent Shielding Effectiveness?
Buyer beware – at least of the test method. I am no
Buyer beware – at least of the test method. I am not familiar with
the ASTM standard quoted but I would look there first and of course
ask about the frequency range.
Best Regards
Charles Grasso
Senior Compliance Engineer
Echostar Communications Corp.
Tel: 303-706-5467
Fax: 303-799-6222
Cell:
I used to be the Acheson Colloids reresentative on the West Coast for about 10
years. Now I am an outsourced sales engineer for vairous shielding companies.
I help customers select shielding processes using various coating
technologies.
The ED 550 is the worst of the latest and least expensive
Medical
Louisville, CO
> -Original Message-
> From: owner-emc-p...@majordomo.ieee.org
> [mailto:owner-emc-p...@majordomo.ieee.org]On Behalf Of Cortland Richmond
> Sent: Thursday, April 15, 1999 12:11 AM
> To: Richard Haynes; ieee pstc list
> Subject: Re: Conductive Paint
&
FYI:
An article regarding the use of conductive coatings in plastic enclosures
appears in this year's (1999) edition of ITEM (http://www.rbitem.com):
"Performance characteristics of conductive coatings for EMI control", Brian
Jackson and Thomas Bleeks, p. 125, 137-146. Emphasis is on EMI applicati
rred to as "electroless nickel")?
Ed
From: Gary McInturff
Subject: RE: Conductive Paint
Date: Wed, 14 Apr 1999 08:07:54 -0700
To: "'WOODS, RICHARD'" , 'emc-pstc'
> Just to round this topic off. There is an alternate way to ap
Follows
>> Date: 14-Apr-99 10:00:21 MsgID: 1067-92308 ToID: 72146,373
From: "Richard Haynes" >INTERNET:vale...@pluto.njcc.com
Subj: Re: Conductive Paint
Chrg: $0.00 Imp: Norm Sens: StdReceipt: NoParts: 1
Hey,
I am just now writing a paper
absolute
measurement that are reproducable.
-Original Message-
From: Douglas McKean
To: emc-p...@ieee.org
List-Post: emc-pstc@listserv.ieee.org
Date: Tuesday, April 13, 1999 9:26 PM
Subject: Re: Conductive Paint
>
>Well, here's some basic stuff from my experience.
>
>
ch to the insides
of the "pretty panels" of the enclosure.
Gary
-Original Message-
From: WOODS, RICHARD [SMTP:wo...@sensormatic.com]
Sent: Tuesday, April 13, 1999 11:54 AM
To: 'emc-pstc'
Subject: RE: Conductive Pai
Hi Richard,
In the last paragraph, you went to another related topic: "Conductive Paint
and Environment Protection".
To my knowledge, some paints would be banned by EU in a couple of years,
some not.
B Ma
-
Original Text
From: "WOODS, RICHARD" , on 4/13/99 2:22 PM:
When I worked
Hi Jeff:
> I need to clarify my earlier question on conductive paint. We bond our
> enclosure panels together with screws. We use external-tooth starwashers
> between the screws and sheet metal to achieve a reliable, protective-earth
> bond. On our painted panels, we mask the paint s
Jeff:
In the military product area, using star washers for a ground path is not
acceptable. The theory is that the stars only dig in at tiny point-contacts,
and the crenelations leave voids where possibly corrosive contaminants may
collect. At those point contacts, the current density can get r
Dear Jeff,
As you may know, if peeling or flaking of the conductive paint could
cause a hazardous condition (such as reducing clearances or
creepages) it must be a suitable paint (previously evaluated for use
with the polymeric enclosure material). In addition, the process of
application of th
Well, here's some basic stuff from my experience.
Conductive paint cannot be used for "earth bonding".
It can be used only for shielding purposes. In other
words, don't expect to either a. pass large amounts
of current through it, b. assume it will always be
a reliable ground path, c. be abl
Hi Jeff:
> My company is proposing to use conductive paint on our enclosures, and I
> would like your input as to the acceptability of this vis-a-vis protective
> earth bonding of enclosure panels. I am interested in the perspective of
> both European and North American requirements.
When I worked for a major PC manufacturer we started out with conductive
coatings on our laptops. Paint over spray was a problem that we had to
address. Also, the coatings did not always touch at all points due to bowing
of the plastics. We were also concerned with the long term effects of
servicin
We have a product which uses conductive paint inside of the enclosure. From
a performance standpoint, it works quite well. The major problem being that
you need metal to metal (paint to paint) contact. We found that the abrasive
quality was pretty poor and as such we had to add material (conductive
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