841AR (340-Gram-Aero)

MG Chemicals 841AR Super Shield™ Nickel Conductive Spray Paint

Overview

MG Chemicals 841AR Super Shield™ is a nickel-filled conductive aerosol coating designed to provide EMI/RFI shielding and electrical conductivity on non-conductive surfaces. Formulated as a one-part solvent-based acrylic lacquer, the coating creates a durable, abrasion-resistant conductive layer that adheres strongly to many engineering plastics. It is widely used for shielding electronic enclosures, reducing electromagnetic interference, and providing corrosion-resistant conductive coatings in industrial, aerospace, marine, and electronic applications.

Key Technical Characteristics

• Product Type: Conductive nickel-filled spray coating
• Chemistry: Solvent-based acrylic lacquer
• Pigment: Highly conductive nickel flake
• Application Form: Aerosol spray
• Resistivity: 7.6 � 10^-3 ?�cm
• Surface Resistance (50 �m): 0.6 ?/sq
• Recommended Film Thickness: 50 �m
• Minimum Film Thickness: 40 �m
• Service Temperature Range: -40°C to +120°C
• Density: 1.38 g/mL
• Viscosity: 61 cP
• Solids Content: 38%
• Shelf Life: 3 years

Core Performance Benefits

• Provides effective EMI/RFI shielding over a broad frequency range
• Creates electrically conductive coatings on non-conductive substrates
• Excellent corrosion resistance for harsh environments
• Strong adhesion to many engineering plastics
• Fast drying with optional accelerated heat curing
• Abrasion-resistant cured finish
• Mild solvent system suitable for sensitive plastics
• Free from toluene, xylene, and MEK

Typical Applications

• Electronic enclosure EMI shielding
• RFI suppression coatings
• Aerospace electronic equipment housings
• Telecommunications equipment enclosures
• Industrial control systems
• Marine electronic systems
• Plastic electronic housing conductivity enhancement
• Electromagnetic compatibility (EMC) applications

Material Engineering & Design Features

841AR utilizes conductive nickel flake technology dispersed within a durable acrylic lacquer system to create a continuous conductive network after curing. The coating is specifically engineered to provide EMI/RFI attenuation while maintaining corrosion resistance and mechanical durability.

The coating adheres well to many injection-molded plastics including:

• ABS
• PBT
• PVA
• ABS/PC blends

Performance characteristics include:

• Excellent salt fog resistance
• Broad-spectrum EMI/RFI attenuation
• Low surface resistance for conductive applications
• Durable abrasion-resistant finish
• Suitable for marine and corrosive environments

The product is recognized under:

• UL Recognized - File E202609

Installation & Handling

• Clean surfaces thoroughly using isopropyl alcohol before application
• Shake aerosol can vigorously before use
• Apply from a distance of 20-25 cm (8-10 inches)
• Use thin, even coats to avoid excessive build-up
• Allow approximately 3 minutes between coats
• Rotate the part between coats to improve coverage uniformity
• Continue applying coats until desired thickness is achieved
• Clear the spray nozzle after use by inverting the can and spraying briefly

Typical curing schedules:

• 24 hours at 22°C
• 30 minutes at 65°C after a 3-minute flash-off period

Environmental & Compliance Notes

• Store between -5°C and 40°C
• Protect from direct sunlight during storage
• Contains no toluene, xylene, or MEK
• Mild solvent system reduces risk to sensitive plastics
• Review Safety Data Sheet (SDS) prior to use
• Intended for professional and industrial applications

Key Advantages

• Combines EMI shielding and corrosion protection in one coating
• Easy aerosol application without specialized equipment
• Excellent adhesion to engineering plastics
• Fast drying and optional heat-cure capability
• Broad-frequency EMI/RFI attenuation performance
• Durable, abrasion-resistant conductive finish
• Suitable for aerospace, marine, industrial, and electronics applications
• UL-recognized conductive coating technology