CuPro-CoteTM Conductive Paint

CuPro-CoteTM is a sprayable metallic coating system using a specially formulated non-oxidizing copper as the conductive agent. Developed for use an as RFI and EMI shield for plastic electronic equipment housings, it can be used on acrylic, ABS and structural foams (such as Noryl, Valox, etc) as well as solvent sensitive substrates such as polycarbonate and polystyrene.


SYSTEM: one component, air dry, water base
SOLIDS: 47 ±3% by weight
DENSITY: 11.3 ±0.3 lbs per gallon
VOC 1 ±0.1 lb per gallon
THINNER: reduce to desired viscosity with water (up to 4:1 for spray application)
APPLICATION METHOD: brush, roll, or standard air gun with pressure pot with agitation to keep copper in suspension
DRYING TIME: air dry or flash off for 5 minutes at room temp then dry for ½ hour at 160°F
ADHESION: excellent to most plastic surfaces
HUMIDITY RESISTANCE: no change in resistivity or attenuation when tested in accordance with MIL-STD-202 Method 106 - 40 cycles: MIL-STD-810 Method 507 Procedure 5 - 480 hours cycling: meets UL specification 746-C
SURFACE RESISTIVITY: <<5 Ohm/square at 1 mil dry film thickness;
<0.10 Ohm/square at 2 mil dry film thickness
ATTENUATION: >75 dB from 1 MHz to 1 GHz
COVERAGE: 670 ft²/gallon per mil at 100% efficiency
STORAGE LIFE: 6 months from date of shipment in unopened container. Older material should be checked for surface resistivity before using.
COLOR: glitter Copper

Application notes:

Because this is a latex paint, it is non-toxic, non-flammable, and non-hazardous. Clean-up is simple with warm soapy water. Dry coating is soluble in basic solution. To improve abrasion resistance, paint over with ordinary latex paint after completely dry, in any desired color. For outdoor applications, you must paint over with exterior grade latex paint. Use ordinary latex primer when indicated.

Proper grounding improves shielding effectiveness. One simple way to ground the paint is to coat a suitable area and allow to dry, then attach a properly grounded metalized tape with conductive adhesive in an inconspicuous area such as along a corner of the room or enclosure. Then simply paint right over the conductive tape, making good paint contact between the painted surface and conductive tape. Thicker application does not necessarily provide better performance as copper particles may settle during drying.

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