EMS Silver Conductive Coating is a highly conductive acrylic paint designed to take conductive paths or reduce electromagnetic or radio frequency interference (EMI/RFI). Because it is a durable acrylic resin, long-term protection from EMI/RFI is assured. It minimizes loss of metallization through rubbing, and by the oxidation resistant silver that slows down conductivity degradation with age. The flake shape helps ensure maximum points of contact to ensure better conductivity. Loss of shielding through paint peeling is unlikely since the acrylic resin system has been UL-tested and shown to adhere to even difficult substrates like AMS and polycarbonates.
The primary application is to provide an excellent conductivity EMI/RFI shielding suitable for harsh environments. It may also act as a conductive base for applications where it is necessary to impart the highest degree of conductivity to a surface. Being non-magnetic, it also offers a low relative permeability that provides reasonable skin depths, which makes it ideal for microwave transmissions applications.
|*Dry to Touch (Liquid):||3 to 5 min|
|*Recoat time (Liquid):||2 min|
|Full Cure at room temp.:||24 hour|
|Full Cure at 65°C:||1 year|
|**Storage Temperature Limits:||-5 to +40°C (+23 to +104°F)|
*Assumes let 1.00:0.75 let down with thinner.
**The product must stay within storage temperature limits stated.
|Service Temperature:||-40 to +120°C (-40 to +248°F)|
|***Maximum coverage per 900 mL::||<168 000 cm² (<180ft²)|
|***Maximum coverage per US gal:||<709 000 cm² (<763 ft²)|
NOTE: The first coat thickness is typically around 25 µm [1.0 mil].
|Electric & Magnetic Properties||Method||Value|
|Volume Resistivity (Tested by an external and independent laboratory using four point probe.)||Method 5011.5 in MIL-STD-883H||0.0002 Ω·cm|
|:2 x coats @ 2 mil||"||0.055 Ω/sq 18S|
|:3 x coats @ 2.5 mil||"||
0.040 Ω/sq 25S
|Magnetic class relative permeability||Diamagnetic (Non-magnetic) <1.0|
|Shielding Attenuation 33 µm [1.0 mil]|
|10 to 100 kHz||IEEE STD 299-1997||54 dV to 75 dB|
|100 kHz to 1 MHz||"||50 dB to 65 dB|
|1 MHz to 10 MHz||"||54 dB to 65 dB|
|10 MHz to 100 MHz||"||41 dB to 54 dB|
|100 MHz to 1 GHz||"||35 dB to 67 dB|
|1 GHz to 10 GHz||"||41 dB to 59 dB|
|10 GHz to 18 GHz||"||36 dB to 72 dB|
|Resin technology||–||Lacquer (Thermoplastic)|
|Color||Visual||Metallic Silver Grey|
|Environmental & Aging Study||Method||Value|
|Salt Spray Test: 7 day @35 °C +Salt/Fog||ASTM B117-2011|
|Cross-hatch adhesion||ASTM D3359-2009||5B = 0% area removed|
|Cracking, unwashed area||ASTM D661-93||None|
|Visual Color, unwashed area||ASTM D1729-96||Severe yellowing & discoloration|
|Peeling, unwashed area||ASTM D1729-96||None|
|Density @ 25°C||2.15 g/mL|
|Solids Percentage (wt/wt)
(Percentage for liquid only before thinning)
|Viscosity at 25°C (77F)
|Flash Point||-16°C (3.2°F)|
|Chemical||The silver filler is very resistant to oxidation, except in environments containing contaminants such as ozone or H2S, which tarnish its surface. Silver oxide remains conductive so degradation due to oxidation is not as bad as it is with many other metal oxides.
Common paint solvents like acetone, toluene, MEK, and xylene can dissolve the thermoplastic resin. This does make for easier coating repair and work characteristics but is also makes the coating unsuitable for environments that have a lot of solvents.
|Adhesion||EMS Conductive Silver Paint coating adheres to acrylics, metals, epoxies, wood, ABS, PBT, PC, PU, and PVA. NOTE: It is not compatible with contaminants like water, oil, and greasy flux residues which may affect adhesion. If contamination is present, clean the surface before coating.|
Store in a dry area, between -5°C and 40°C (23°C and 104°F).