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 technology in paints. Silver coated copper paint is more conductive and is thinner in dry film thickness than the ED 550 nickel pigment. Nickel used to be the big seller in the 70-80's until Spraylat developed their copper paint. Now most shielding is done with copper or copper/silver paint. Only old school painters use ED 550 anymore as the volume of this paint sales went down resulting in price increases due to losing volume pricing where it is now more expensive than copper paint while still being inferior in shielding effectiveness. You need to check out UL approvals for your plastic and paint combination. If Spraylat y-2000 or Acheson ED 6050 is listed, use these instead as they are better and cheaper. Copper paints can be used at 0.5 mils (vs 2+ mils for nickel) and have better attenuation than nickel. I suggest Spraylat Y-2000 as the workhorse standard paint even though they were my competition when I used to work for Acheson. I also help customers design plastic enclosure seams for their enclosures to reduce masking costs. These paints have problems with masking and masking is the major portion of the cost of painting enclosures with conductive paints. Regards, Steve Toyama Engineered Conductive Materials National Sales Manager 925 447-1200 office 925 447-1220 fax 925 872-7613 cell
----- Original Message ----- From: John Kretsch <mailto:[email protected]> To: [email protected] Sent: Thursday, April 27, 2006 8:02 PM Subject: Conductive Paint Provide Decent Shielding Effectiveness? This topic has come up regarding painting the inside of a plastic housing with something like Electrodag550 http://www.achesonindustries.com/doc/pds/Electrodag550.pdf It claims 60 dB (frequency range is not specified) with a 0.002 minimum application thickness. Does anyone have any experience with this? Any long term durability issues? Regards, John R. Kretsch, P.E., NCE Principal Interpro Consulting Engineering, LLC (860) 919-2980 http://www.ip-ce.com - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to [email protected] Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas [email protected] Mike Cantwell [email protected] For policy questions, send mail to: Jim Bacher: [email protected] David Heald: [email protected] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to [email protected] Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas [email protected] Mike Cantwell [email protected] For policy questions, send mail to: Jim Bacher: [email protected] David Heald: [email protected] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
