There was once a company in Fremont, CA promoting clear conductive coatings
like a paint for plastic a few years ago but later found to be non-effective.
Only thing I know of is ITO sputtered coatings for optically clear conductive
EMI protection. Some new resins and polymers have conductive
There was a very small thread on this some time back - but I didn't save it.
Does anybody know of any vendors of such materials.
Thanks
Gary
Wells cdwe...@stargate.net
To: John Juhasz jjuh...@fiberoptions.com
Sent: Tuesday, March 19, 2002 4:57 PM
Subject: Re: Conductive Coatings/Conductive Plastic
John some comments
We use a Stainless Steel loaded Polly carbonate to control ESD in the
faceplates of our user interfaces.
For ESD
Thanks to all who responded to my message (below)regarding
conductive coatings/conductive plastics.
Everyone made some good points.
GE Interlogix
John Juhasz
Fiber Options Div.
Bohemia, NY
-Original Message-
From: John Juhasz [mailto:jjuh...@fiberoptions.com]
Sent: Tuesday, March 19
Did some research into switching over from
conductive coated plastics to conductive plastics.
The turn off was due to the metallic additions to
the plastic with conductive plastics, the molds
wore out faster than plastic molds. Tooling was
expensive for the product in mind, so I have no
idea
-Original Message-
From: John Juhasz [mailto:jjuh...@fiberoptions.com]
Sent: Tuesday, March 19, 2002 5:42 AM
To: 'emc-p...@ieee.org'
Subject: Conductive Coatings/Conductive Plastic
Seeking comment on Conductive Coatings vs. Conductive Plastic
Having dealt with metal (primarily steel) enclosures
I've had a fair amount of experience with both conductive plastics, and
conductive coatings. Your comments are basically correct.
A lot depends on what you are trying to achieve, both in terms of
attenuation at a particular frequency, and how much actual attenuation
you need. In one project I
Seeking comment on Conductive Coatings vs. Conductive Plastic
Having dealt with metal (primarily steel) enclosures, my knowledge
of conductive coatings/conductive plastics is strictly based on
what I have been able to gleen from simple research and some conversation.
It is my understanding
To: EMC-PSTC Discussion
Group emc-p...@majordomo.ieee.org
Sent by: cc:
owner-emc-pstc@majordomSubject: Re: Spray-on
Conductive Coatings
Darrell Locke wrote:
Dear Colleages,
We have seen an issue lately with spray-on conductive coatings used
on the
inside of electronic enclosures. The coating works great for EMC,
but there
seems to be a problem with adhesion and tiny flakes of conductive
material
getting in the electronics
-6928
-Original Message-
From: Darrell Locke [mailto:dlo...@advanced-input.com]
Sent: Friday, January 11, 2002 1:52 PM
To: 'Aschenberg, Mat'
Cc: emc-p...@majordomo.ieee.org
Subject: RE: Spray-on Conductive Coatings
Thanks Matt,
I was not aware that a UL approved painter/applicator
I do not believe it's required. If the plastic/coating and applicator are
under the UL746 program then you do not need to do any testing to qualify
your product. If it is not then it must be tested.
We have been using conductive coatings for 15+ years and as long as the
combo is under the UL
Darrell and all,
Many of our clients work with a company that applies conductive coatings
on numerous electronic plastic housings. They have had much success in
providing this particular process to our customers and seem to be the
know all group in this industry. We like to stay up on what what
AM
To: Darrell Locke
Cc: emc-p...@majordomo.ieee.org
Subject: RE: Spray-on Conductive Coatings
Darrell,
I have used this process in the past. It presents a bit of a safety
nightmare.
The products I work on are UL tested and approved. Getting a product
approved with UL having a spray
Yes, Hewlett-Packard and now Agilent uses spray-on conductive coatings. We
require our vendor to have there process UL approved. If you go to UL 746C
it will describe the test method. Paul N. Gardner Company makes a testing
set for checking coating adhesion.
Ron Duffy
Product Safety Engineer
Locke
Cc: emc-p...@majordomo.ieee.org
Subject: RE: Spray-on Conductive Coatings
Darrell,
I have used this process in the past. It presents a bit of a safety
nightmare.
The products I work on are UL tested and approved. Getting a product
approved with UL having a spray-on conductive coating
]
Sent: Friday, January 11, 2002 10:24 AM
To: emc-p...@majordomo.ieee.org
Subject: Spray-on Conductive Coatings
Dear Colleages,
We have seen an issue lately with spray-on conductive coatings used on the
inside of electronic enclosures. The coating works great for EMC
Dear Colleages,
We have seen an issue lately with spray-on conductive coatings used on the
inside of electronic enclosures. The coating works great for EMC, but there
seems to be a problem with adhesion and tiny flakes of conductive material
getting in the electronics. I'm thinking
very well call them and get an answer from
Samuri Delicatessen.
Chris
-Original Message-
From: John Juhasz [SMTP:jjuh...@fiberoptions.com]
Sent: Monday, August 20, 2001 2:30 PM
To: 'emc-p...@ieee.org'
Subject: Conductive Coatings
Greetings . . .
Beginning
Subject: Re: Conductive Coatings
John,
Yes. I've done it. But the info is dated a little.
First, the plastic has to have it's own UL rating.
For SELV this might involve V2 min.
Not sure about that.
Then, the mold house has to have it's own UL
approval to do the molding
the
resistance. Silver and copper coating will be lower
in resistance for the same thickness.
Then, the conductive coating can't be used as
a primary ground.
Conductive coatings are also good for only one
time use essentially. Removing and installing a
cover several times with a conductive coating
...@sensormatic.com]
Sent: Monday, August 20, 2001 12:13 PM
To: emc-p...@ieee.org
Subject: RE: Conductive Coatings
Other issues include recycling of materials per the proposed EU directive.
See http://europa.eu.int/comm/enterprise/electr_equipment/eee/index.htm
http://europa.eu.int/comm/enterprise
Hi John,
In a past life, I had to deal with conductive coatings. In addition to the
parameters you listed,
uniformity, integrity and durability of the coating were important. Uniformity
was important because
the inside surface of the enclosure pieces were complicated (coating voids
behind
...@fiberoptions.com]
Sent: Monday, August 20, 2001 2:30 PM
To: 'emc-p...@ieee.org'
Subject: Conductive Coatings
Greetings . . .
Beginning to consider conductive coatings for EMC shielding.
To be used inside a plastic cover (material as yet unknown
Greetings . . .
Beginning to consider conductive coatings for EMC shielding.
To be used inside a plastic cover (material as yet unknown) in
a low power/voltage (SELV) application.
This is unfamiliar territory.
I'm sure someone on this listserv has experience with these.
I know to at least
coatings, which was a BAD thing to do.
Nickel conductive coatings mud crack, and unlike our coppers which will
have
some elongation, mud cracking due to excessive films build unintentionally
or
on complex parts are a bane of using nickel.
This subject has been known of for years and is really
Yes Eric,
I have worked with conductive coatings on plastic with
no problems as long as some things are kept in mind -
There's a whole UL thing to it that I can list
if enough people want me to.
The coatings cannot withstand repeated removal
from the product. The coatings are very
Eric,
I'll chip in my two cents here, having had some experiences with conductive
coatings. I've seen emission problems from products with both nickel
coatings and copper. Problems have been due to incomplete coverage,
failure to fill details, and unauthorized vendor mechanical changes.
You
anybody have any opinions on conductive coatings on plastic for rfi/emi
protection? we've been very successful at designing our products to
be quiet and immune even in plastic boxes but i've been asked to
look into conductive coatings for further protection. i've ordered some
spray/brush
http://www.cetest.nl/electronics.htm
==
-Oorspronkelijk bericht-
Van:Eric Henning [SMTP:henn...@fp.com]
Verzonden: dinsdag 24 februari 1998 21:53
Aan:emc-p...@ieee.org
Onderwerp: conductive coatings
anybody have any opinions on conductive coatings on plastic for rfi/emi
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