MG Chemicals 841AR Technical Data Sheet
841AR-Aerosol
Super ShieldTM
Nickel Conductive Coating
841AR Technical Data Sheet
Description
• Sensors
• Controllers
• Receivers
• Test Equipment
• Scientific equipment
• Medical Equipment
• Communication devices
• Satellite dishes and radar systems
• Antennas
• Aerospace applications
• Electric vehicles
• Cable boxes
• Networking gear, firewalls
• Military equipment
• Cellphones, laptops, PDA’s
• GPS’s, navigation systems
• TV’s, monitor’s, and displays
• Consumer electronics
• Electronic sporting equipment
• Audio equipment
• Electric guitars and other amplified
instruments
• Drones and other RC vehicles
• Repairing damage to existing shielding
• Conductive undercoat for electroplating
• Protecting metal surfaces from oxidation
• Providing electric continuity for circuits
• Grounding
ENVIRONMENT
RoHS Compliant
Low-VOC
The 841AR Super ShieldTM Nickel Conductive Coating is a one-part durable acrylic lacquer pigmented with
a highly conductive nickel flake, packaged in convenient aerosol format. It utilizes a solvent based system
with no heat cure necessary. The cured coating is smooth, hard, and abrasion resistant. It provides strong
adhesion to plastics, excellent conductivity, and strong corrosion resistance, even in marine environments.
Applications & Usages
The 841AR is designed to provide a conductive coating to the interior of plastic electronic enclosures to
suppress EMI/RFI emissions. It excels when corrosion resistance is a concern.
The 841AR is commonly used by manufacturers of these devices:
Other applications for 841AR include:
Benefits and Features
• UL Recognized (File # E202609)
• Provides effective EMI/RFI shielding over a broad frequency range
• Volume resistivity of 0.0076 cm
• Smooth, durable and, abrasion resistant
• Available in liquid format
• Quick dry time, no heat cure required
• Mild solvent system
• Strong adhesion to acrylic, ABS, polycarbonate, and other injection molded plastics
• Excellent adhesion to wood and ceramics
• Corrosion resistant, suitable for marine environments
• Low VOC; HAP Free; Does not contain toluene, xylene, or MEK
Date: 15 June 2017 / Ver. 2.02
Page 1 of 8
841AR-Aerosol
Super ShieldTM
Nickel Conductive Coating
841AR Technical Data Sheet
Properties
Value
Recoat time (liquid)
3 min
Drying Time @22 °C [72 °F]
24 h
Drying Time @65 °C [149 °F]
30 min
Shelf Life
2 y
Theoretical 340G Spray
≤2 500 cm2
Can Coverage a)
≤390 in2
Properties
Value
Constant Service
Temperature
-40 to 120 °C
[-40 to 248 °F]
Intermittent Temperature
-50 to 125 °C
Limits
[-58 to 257 °F]
Storage Temperature Limits b)
-5 to 40 °C
[23 to 104 °F]
Electrical & Magnetic Properties
Method
Value
Volume Resistivity
Method 5011.5
in MIL-STD-883H
0.0076 cm
130 S/cm
Surface Resistance
Resistance a)
Conductance
a)
Surface Resistance : 1 coat @2.1 mil
Square probe
0.62 /sq
1.6 S
Surface Resistance : 2 coats @4.2 mil
Square probe
0.38 /sq
2.6 S
Surface Resistance : 3 coats @6.1 mil
Square probe
0.34 /sq
2.9 S
Magnetic Class
Ferromagnetic
Relative Permeability
≥100
Shielding Attenuation for 51 m [2.0 mil]
IEEE STD 299-1997
Shielding Attenuation >10 to 100 kHz
"
84 dB to 89 dB
Shielding Attenuation >100 kHz to 1 MHz
"
65 dB to 88 dB
Shielding Attenuation >1 MHz to 10 MHz
"
39 dB to 60 dB
Shielding Attenuation >10 MHz to 100 MHz
"
32 dB to 52 dB
Shielding Attenuation >100 MHz to 1 GHz
"
52 dB to 61 dB
Shielding Attenuation >1 GHz to 10 GHz
"
56 dB to 74 dB
Shielding Attenuation >10 GHz to 18 GHz
"
49 dB to 68 dB
Usage Parameters
a) Idealized estimate based on a coat thickness
of 50 m [2.0 mil] and 50% transfer
efficiency
Temperature Ranges
b) The product must stay within the storage
temperature limits stated. ATTENTION! Aerosol
container will be crushed at ≤-26.5 °C
[≤15.7 °F].
Principal Components
Name CAS Number
Nickel Flake (high purity) 7440-02-0
Acrylic Resin 25608-33-7
Acetone 67-64-1
Dimethyl carbonate 616-38-6
Heptan-2-one 110-43-0
Properties of Cured 841AR
Date: 15 June 2017 / Ver. 2.02
Page 2 of 8
841AR-Aerosol
Super ShieldTM
Nickel Conductive Coating
841AR Technical Data Sheet
Physical Properties
Method
Value
Paint Type
—
Lacquer (Thermoplastic)
Color
Visual
Dark grey
Abrasion Resistant
—
Yes
Blister Resistant
—
Yes
Peeling Resistant
—
Yes
Water Resistant
—
Yes
Mechanical Properties
Method
Value
Adhesion b)
ASTM D3359
5B
Pencil Hardness b)
ASTM D3363
HB, soft
Environmental & Ageing Study
Method
Value
Salt Fog Test @35 °C [95 °F], 96 h b)
ASTM B117-2011
SalResistivity before
MG-ELEC-120
380 msq
SalResistivity after
"
510 msq
Sal% Conductivity after
"
75%
Cross-Hatch Adhesion
ASTM D3359-2009
5B
Cracking, unwashed area
ASTM D661-93
None
Visual Color, unwashed area
ASTM D1729-96
Slightly darker
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
1.5 2.5 3.5 4.5 5.5 6.5
Surface Resistance (Ω/sq)
Thickness (mil)
a) Surface resistance is given in sq and the corresponding conductance in Siemens (S or -1
b) Tested using HVLP spray gun application on acrylonitrile butadiene styrene (ABS) coupons
The coating surface resistance and attenuation are plotted in Figures 1 and 2.
Surface Resistance by Coating Thickness
Figure 1. Nickel conductive coating surface resistance at different thicknesses (the dots indicate typical
successive coat thicknesses)
Date: 15 June 2017 / Ver. 2.02
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