Epoxy Conductive Paints
Protection Against EMI/RFI: Durable and Chemically Resistant
MG Chemicals ER series are epoxy conductive paints that are designed for protection against EMI/RFI. They offer superior durability and resistance to solvents compared to other chemistries. These 2-part systems are suitable either in harsh environments with direct chemical exposure or for use on substrates like metal and concrete.
Features & Benefits
- 2-part systems
- Superior adhesion to metals and concrete
- Excellent abrasion resistance
- Enhanced resistance against solvents
- Withstands wave solder temperatures exceeding 260°C
Applications
- Military and commercial electronic enclosures
- Avionic systems
- Shielding paint for flooring
- Conductive coating for electroplating metals
- Shielding in harsh environments like engine hoods
841ER – Nickel conductive paint for electroplating metals
842ER – Silver conductive paint for premium shielding performance
843ER – Silver-coated copper conductive paint which balances cost and EMI performance
841ER, 842ER, 843ER Shielding Attenuation
| 841ER | 842ER | 843ER | |
| UNCURED PROPERTIES | |||
| Conductive filler | Nickel | Silver | Silver-coated copper |
| Format | Liquid | Liquid | Liquid |
| Color | Grey | Metallic silver | Light metallic brown |
| Mix ratio by weight | 100:25 | 100:10 | 100:28 |
| Mix ratio by volume | 100:38 | 100:20 | 100:36 |
| Percent solids | 32% | 54% | 30% |
| Density @ 25 °C [77 °F] | 1.81 g/mL | 1.37 g/mL | 1.00 g/mL |
| Viscosity @ 25 °C [77 °F] | 200 cP (Part A) 18 cP (Part B) | 60 cP (Part A) 18 cP (Part B) | 35 cP (Part A) 9 cP (Part B) |
| Calculated VOC | 1 294 g/L | 1 181 g/L | 779 g/L |
| Theoretical coverage @ 2 mil (based on 100% transfer efficiency) | 28 000 cm2/L | 25 230 cm2/L | 47 840 cm2/L |
| Working time | 4 h | 4 h | 8 h |
| Recoat time (Plastic) | 5 min | 5 min | 3 min |
| Cure time @ 22 °C [71.6 °F] | Heat cure only | 24 h | Heat cure only |
| Cure time @ 65 °C [149 °F] | 4 h | 3 h | 4 h |
| Cure time @ 80 °C [176 °F] | 2 h | 2 h | 2 h |
| Cure time @ 100 °C [212 °F] | 1 h | 1 h | N/A |
| CURED PROPERTIES | |||
| Resistivity | 0.03 Ω·cm | 0.0002 Ω·cm | 0.0018 Ω·cm |
| Surface resistance @ 50 μm | 4.3 Ω/sq | 0.13 Ω/sq | 0.31 Ω/sq |
| Salt fog resistance @ 35 °C [95 °F], 96 h | Good | Excellent | Poor |
| Constant service temperature | -40–150 °C [-40–302 °F] | -40–150 °C [-40–302 °F] | -40–120 °C [-40–248 °F] |
| Adhesion (ABS/PC) | 5B | 5B | 5B |
| Pencil hardness | 4H, hard | 4H, hard | 6H, hard |
| Magnetic class | Ferromagnetic | Diamagnetic | Diamagnetic |
| AVAILABLE PACKAGING | |||
| Net contents | 250 mL (2 metal can kit) 1.17 L (2 metal can kit) 3.25 L (2 metal can kit) | 60 mL (2 glass bottle kit) 900 mL (2 metal can kit) 4.24 L (2 metal can kit) | 250 mL (2 metal can kit) 810 mL (2 metal can kit) 3.25 L (2 metal can kit) |
MG Chemicals 1210 Corporate Drive, Burlington, Ontario, Canada L7L 5R6
North America: +(1)800-340-0772 International: +(1) 905-331-1396 Europe: +(44)1663 362888
15 January 2021 – Version 1.5
www.mgchemicals.com
