Around 10% of all accidents involving storage tanks that occur in industrial facilities are caused by the electrostatic charge that is generated when two dissimilar materials are in relative motion to each other. Product movement during filling develops a static charge between the liquid surface and the tank shell. The accumulated electrostatic charge can produce an incendiary spark that can lead to terrible accidents. Dissipation of this static charge is the role of anti-static fillers that are added to the body of the storage tank or to the lining coating, and the choice of additive is of critical importance.
Until recently, using a standard anti-static filler – such as conductive mica or carbon black – always involved a compromise that resulted in anti-static properties that were not stable over time and that were affected by weather conditions. Now, however, innovative technologies have enabled graphene nanotubes, also known as single wall carbon nanotubes, to totally reshape the perception of conductive fillers for fiberglass plastics and their coatings.