The numbers behind carbon in coatings
These figures are indicative estimates that vary by scope and year.
Where carbon fits in coatings
Graphene nanoplatelets give coatings a tortuous-path barrier to moisture and oxygen, orienting parallel to the surface to slow diffusion. Reported results show a 2 to 5 times reduction in corrosion rate at graphene loadings of 1 to 5 percent by weight, extending coating life on steel and aluminium.
Carbon nanotubes form a percolation network at low loading, dissipating static charge and adding wear resistance, with surface resistivity below 10^6 ohms per square achievable at under 2 percent by weight. Nanodiamonds bring near-diamond hardness and low friction to electroplated and sprayed coatings, cutting the coefficient of friction by 30 to 50 percent. Graphene's high in-plane thermal conductivity also enables heat-spreading coatings for electronics enclosures and LED housings.
Biochar-based coatings are emerging as a low-carbon filler with UV-absorption and mild barrier properties. ACC tracks the producers, the formulation science and the market behind coatings carbons so members can see which functions are proven in service and which are still being commercialised.
Key carbons used in coatings
Drawn from materials ACC has linked to coatings coverage and producers. Each links to its full material profile.
