MG-Chemicals-841AR-900ML

841AR Liquid  

Super Shield

TM  

Nickel Conductive Paint  

8

4

1AR is a conductive paint that consists of a  

1-part, solvent-based acrylic lacquer, pigmented  

with a highly conductive nickel flake. It is smooth,  

hard, an

d

a

brasio

n

r

esistant. I

t

c

a

n

b

e

e

asil

y

a

pplied  

by brush or spray. It has a quick dry time, with no  

heat cure necessary. It adheres strongly to most  

injection molded plastics, such as ABS, PBT,  

PVA and ABS/PC blend. It also provides strong  

corrosion resistance and is suitable for use in  

marine environments.  

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4

1AR provides a conductive coating for the  

interior of plastic electronic enclosures that  

suppresses EMI/RFI emissions.  

Features & Benefits  

Cured Properties  

• UL

 

Recognized (File # E202609)  

Resistivity  

4.0 x 10

-3

Ω·cm  

0.68 Ω/sq  

Excellent  

• Provides

 

effective EMI/RFI shielding over a  

broad frequency range  

Surface Resistance @ 50 µm  

Salt fog @ 35 °C [95 °F], 96 h  

Service

T

emperature Range  

• Strong

 

corrosion resistance  

-40–120 ˚C  

• Mild

 

solvent system, safe on polystyrenes  

• Does

 

not contain toluene, xylene, or MEK  

• Also

 

available in aerosol (841AR-340G) and  

pen (841AR-P) formats, see separate TDSs  

Usage Parameters  

Recoat Time  

Cure Times  

3 min  

24 h @ 22

 

˚C  

30 min @ 65

 

˚C  

Available Packaging  

Cat. No.  

Packaging  

Net Vol.  

12 mL  

Net Wt.  

20.2 g  

253 g  

Recommended Film Thickness  

Minimum Film Thickness  

Theoretical Coverage @ 2 mil  

50 µm  

40 µm  

44 785

 

cm

2

/L  

841AR-15ML  

Jar  

841AR-150ML Can  

841AR-900ML Can  

150 mL  

850 mL  

3.60 L  

1.43 kg  

6.07 kg  

(based on 100% transfer efficiency)  

841AR-3.78L  

Can  

Contact Information  

Uncured Properties  

Viscosity @ 25 ˚C  

Density  

MG Chemicals, 1210 Corporate Drive  

Burlington, Ontario, Canada L7L 5R6  

1 460

 

cP  

1.70 g/mL  

57 %  

Email: support@mgchemicals.com  

Percent Solids  

Shelf Life  

Phone: North America:+(1)800-340-0772  

International: +(1)

 

905-331-1396  

3 y  

Europe:  

+(44)1663 362888  

Calculated VOC  

236 g/L  

ISO 9001:2015 Quality Management System. Burlington, Ontario, Canada

 

SAI Global File: 004008  

03 November 2021 / Ver. 5.0  

1

841AR Liquid  

Read the product SDS and Application Guide for  

more detailed instructions before using this product  

(downloadable at www.mgchemicals.com).  

Application Instructions  

Surface Resistance by Paint Thickness  

0.75  

0.70  

0.65  

0.60  

0.55  

0.50  

0.45  

Recommended Preparation  

Clean the substrate with Isopropyl Alcohol, MG #824,  

so the surface is free of oils, dust, and other residues.  

Recommended Thinner  

1.5  

2.0  

2.5  

3.0  

3.5  

4.0  

4.5  

When applying to polycarbonate or ABS, thin with MG  

#4351 Thinner 1. For other substrates, use MG #435  

Thinner.  

Thickness (mil

)  

Selective Coating  

Brush  

For higher volume applications, paint can be  

applied via selective coating equipment. Use a  

system with constant fluid recirculation to keep the  

particles from settling in the lines. A fluid nozzle  

ranging from 1.2 mm–1.4 mm diameter and 5–10 psi  

fluid pressure is recommended depending on nozzle  

size. Thin the paint to adjust the viscosity to the level  

appropriate for the valve being used.  

Thinning is not required for most brush applications.  

Manual Spray Guns  

Dilute 1-part paint with 1-part thinner. Use a standard  

fluid nozzle gun to spray the diluted paint. The  

settings listed below are recommendations; however,  

performance will vary with different brands:  

L

V

MP  

HVLP  

Nozzle tip diameter  

Inlet pressure  

Air flow  

1.2–1.4 mm  

5

–

15 psi  

10–15 SCFM  

5

–

10 psi  

1.2–1.4 mm  

5

–

15 psi  

8.3 SCFM  

5

–

10 psi  

Cure Instructions  

Allow to dry at room temperature for 24 hours, or after  

letting sit for 3 minutes, cure the paint in an oven for  

30 minutes @ 65 ˚C.  

Air cap  

When using a pressure pot and agitator, keep the  

agitator at low mixing speed with air pressure of  

20–50 psi. Use the lowest pressure necessary to  

keep the particles suspended.  

Clean-up  

Clean spray system and equipment with MEK or  

acetone, MG # 434.  

Shielding Attenuation  

Aluminum Panel  

841AR  

B

l

ank  

120  

100  

80  

60  

40  

20  

0

Storage and Handling  

Store between -5 and 40 ˚C in a dry area, away from  

sunlight (see SDS).  

Disclaimer  

This information is beꢀieved to be accurate. ꢁt is  

intended for professionaꢀ end-users who have the  

skiꢀꢀs required to evaꢀuate and use the data properꢀy.  

M.G. Chemicaꢀs Ltd. does not guarantee the accuracy  

of the data and assumes no ꢀiabiꢀity in connection with  

damages incurred whiꢀe using it.  

0.01  

0.1  

1

10  

100  

1000  

10000  

100000  

Frequency (MHz)  

Test performed with a two-coat thickness.  

ISO 9001:2015 Quality Management System. Burlington, Ontario, Canada

 

SAI Global File: 004008  

03 November 2021 / Ver. 5.0  

2