Graphite Powder

The more you add, the more effective the anti-static properties will be, however addition of the graphite powder will thicken the gelcoat and so you need to determine the right balance for your application. The addition of 10% by weight is likely to be a good starting point but if the anti-static effectiveness is critical then you should conduct your own tests to ensure this ratio gives you the required properties.

The Graphite powder is a natural sourced powder.

Although not specifically designed for mechanical lubrication - such as locks, this is a fine pure graphite powder so would work fine as a dry lubricant in that situation.

Due to the irregular particle shape and fine layer of iron oxide on the particle surface, the level of conductivity ends up being very low. Adding carbon fibre will not significantly improve the conductivity either as carbon fibre is a very high resistance conductor.

Graphite powder when mixed into plastics and resins does give a charcoal black colour however it does not tend to lend any sort of 'metallic' effect. It's also worth remembering that graphite powder does slightly modify the properties of materials it is added too, reducing their surface friction (which may or may not be relevant in your application).

A Better product for this kind of repair is our Black Epoxy Repair Filler which will form a nice a strong repair to surface scratches. It also closely matches the colour of carbon fibre so should help mask the repair.

To improve the electrical conductivity, you would need a very large proportion of the powder. This is because in typical proportions, when mixed into the resin, the powder is still surrounded by a non-conductive resin and thus there is little direct contact to improve conductivity. With very high quantities, you can get some conductivity, although it is a high resistance conductor. Graphite powder (or milled carbon fibre) is sometimes added to paints and coatings to help with high voltage  electrostatic discharge.