What is Conductive Grease?

What is Conductive Grease?

Conductive grease is a specialized lubricant formulated with conductive fillers (such as metal powders, carbon-based materials, etc.). It provides lubrication, sealing, and protection while also offering good electrical conductivity.

Main Uses of Conductive Grease:

1. Dissipating Static Charge / Preventing Static Buildup: Used between components requiring relative motion (like rotating joints, sliding contacts, bearings), it provides a low-resistance path to safely carry away static charges generated by friction. This prevents electrostatic discharge (ESD) which could damage sensitive electronics or create hazards (e.g., in flammable environments).

2. Maintaining Stable Electrical Contact: Used in locations requiring both an electrical connection and mechanical movement, for example:

• Electrical connectors (frequently mated connectors, battery terminals).

• Switch contacts (sliding switches, rotary switches).

• Potentiometer / variable resistor tracks.

• Sliding electrical contacts (e.g., antennas, certain sensors).

• The conductive particles in the grease help establish and maintain a stable current path between metal contact surfaces, reducing increased contact resistance and signal instability caused by fretting corrosion, oxidation, or contamination.

3. Providing Electromagnetic Interference (EMI) Shielding: Certain highly conductive greases (especially silver or nickel-based) can form a conductive layer at joints or gaps, aiding in electromagnetic shielding to reduce EMI or RFI (Radio Frequency Interference).

4. Protecting Electrical Contact Points: Like standard grease, it seals out air and moisture, preventing oxidation and corrosion of metal contacts, thereby extending service life.

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