company tower banner
MG Chemicals Company Logo

MG Chemicals 843AR-340G - Super Shield Silver Coated Copper Conductive Paint

843AR is a conductive paint that consists of a 1-part, solvent-based acrylic lacquer, pigmented with a highly conductive silver-coated copper flake. It is smooth, hard, and abrasion resistant. It is a ready-to-spray system, with no let down necessary. 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 provides excellent shielding levels at high frequencies. 843AR is designed to provide a conductive coating for the interior of plastic electronic enclosures that suppresses EMI/RFI emissions. It excels when higher levels of shielding are required.

Product Type: 1K (1 component) Coating, Conductive Coating, Solventborne Coating

Features: Abrasion Resistant, Electromagnetic Interference Shielding, Fast Drying, Good Smoothness, Radio Frequency Shielding (RFI)

Compatible Substrates & Surfaces: Plastics

Application Method: Spray

  • TypeDocument Name
View All Documents

Knowde Enhanced TDS

Identification & Functionality

Features & Benefits

Key Attributes
  • UL Recognized
  • Provides effective EMI/RFI shielding over a broad frequency range
  • Mild solvent system, safe on polystyrenes
  • Does not contain toluene, xylene, or MEK
  • Available in liquid format.

Applications & Uses

Application Method
Compatible Substrates & Surfaces
Recommended Preparation

Clean the substrate with Isopropyl Alcohol, MG #824, so the surface is free of oils, dust, and other residues.

Application Instructions

  1. Shake the can vigorously.
  2. Spray a test pattern to ensure good flow quality.
  3. Tilt the board at 45° and spray a thin, even coat from a distance of 20–25 cm (8–10 in). Use spray-andrelease strokes with an even motion to avoid paint buildup in one spot. Start and end each stroke off the surface.
  4. Wait 3 min before applying another coat, to avoid trapping solvent.
  5. Rotate the board 90° and spray again to ensure good coverage.
  6. Apply additional coats until desired thickness is achieved (go to step 3).
  7. Let dry 3 min at room temperature before applying heat cure.
  8. After use, clear the nozzle by inverting the can and briefly spraying until clear propellant comes out.

Properties

Physical Form
Physical Properties
ValueUnitsTest Method / Conditions
Density0.99g/mL
Typical Properties
ValueUnitsTest Method / Conditions
Viscosity (at 25 ˚C)87cP
Calculated VOC404g/L
Cured Properties
ValueUnitsTest Method / Conditions
Resistivity2.2 x 10⁻⁴Ω·cm
Surface Resistance (at 50 μm)0.08Ω/sq
Service Temperature Range-40 to 120˚C
Uncured Properties
ValueUnitsTest Method / Conditions
Percent Solids16%

Regulatory & Compliance

Quality Standards

Technical Details & Test Data

Shielding Attenuation

MG Chemicals 843AR-340G - Super Shield Silver Coated Copper Conductive Paint - Shielding Attenuation

Test performed with a two-coat thickness.

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.

Surface Resistance by Paint Thickness

MG Chemicals 843AR-340G - Super Shield Silver Coated Copper Conductive Paint - Surface Resistance By Paint Thickness

Usage Parameters
Recoat Time 3 min
Cure Times 24 h @ 22 ˚C
30 min @ 65 ˚C
Recommended Film Thickness 50–65 μm
Minimum Film Thickness 30 μm
Theoretical Coverage @ 2 mil
(based on 100% transfer efficiency)
23290 cm2

Packaging & Availability

Packaging and Supporting Products
Cat. No. Packaging Net Volume Net Weight
843AR-340G Aerosol 400 mL 340 g

Storage & Handling

Shelf Life
3 Years
Storage

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