Conductive nickel coating

Applying electrically-conductive nickel coating 3800N series is a fast and easy method for EMI/RFI shielding/screening of plastic enclosures/housings. Your electrostatically sensitive applications can be shielded by using an electrically conductive paint containing nickel, copper or silver.

The paint comes in aerosols (Part number 3801N) for easy use, but can also be supplied in tins of 5 liters, 7 kg (Part number 3805N) and tins of 20 liters, 28 kg (Part number 3820N) if you need larger quantities. Materials such as iron-chromium-aluminium and molybdenum disilicide are used for higher temperature applications.

Some oxide ceramics are used as conductors and semi-conductors for specialized applications. To fulfill the requirements concerning the limits of immunity and emission to interference, plastic housings and components need to be coated either fully or selectively with an electrically conductive coating. The nickel-conductive coating is contained in an air-drying acrylic resin.

The resin becomes touch dry 15 minutes after application and achieves maximum conductivity within 24 hours. It is intended to prevent electrical interference which penetrates enclosures made from thermoplastics and other insulating materials. The coating also prevents static build up.

It is recommended that an grounding connection is made to achieve maximum shielding performance. A suitable material for this is Mu-copper tape which can simply be stuck onto the coated surface or over-sprayed with the electrically-conductive copper coating. The coating, once it has been applied, has a copper colored finish.

Shielding effectiveness

PRECAUTIONS

The 3801N is in a pressurised container. Protect from sunlight and do not expose to temperature exceeding 50°C. Do not pierce or burn, even after use. Do not spray on an open flame or any incandescent material. Keep away from sources of ignition - No Smoking (S16)

Use Under Well Ventilated Conditions: Contains Nickel, Ethyl Acetate, Xylene,Butyl Ethanoate, Isobutanol. - Do not breath vapour (S23). Harmful by inhalation (R20). In case of insufficient ventilation - wear suitable respiratory equipment (S38), such devices must be used in accordance with the manufacturer’s instructions. For excessive vapour inhalation, remove to fresh air and summon medical attention.

Avoid Contact With Skin And Eyes (S24/25) - In case of skin contact, wash with soap and water, dry and apply work cream. Eye contact - flush with water for at least 15 minutes and seek medical attention. If accidentally swallowed, summon medical attention.

Benefits

• Available in aerosol for prototype and small runs (Part number 3801N)
• Low surface resistivity of 0.9Ω/sq yielding high attenuation
• Enables speed and easy coverage of complex shapes
• Delivery from stock
• Cost-effective solution
• Compatible with most plastics and metal substrates, the paint meets the requirements of BS IEC 61340-5-1:2001 (Basic specification: Protection of electronic devices from electrostatic phenomena) and suitable for use in Atex hazardous environments.

Physical properties