Cabot's specialty conductive blacks—VULCAN® XC605, VULCAN XC305 and VULCAN XC72—were created as Cabot's response to the increasing need for a differentiated product range for ESD applications. Each grade meets a particular performance attribute for conductive compound formulators:

• Conductivity: surface resistivity (SR) of the conductive compounds at equal conductive black loading.
• Surface Smoothness: surface defects that appear on an extruded tape under tightly controlled conditions.
• Stiffness (Flexural Modulus): resistance to deformation of a plastic part when a gradually increasing stress is applied.
• Impact Strength: total energy a plastic part can absorb before it breaks when a sudden impact stress is applied.
• Dispersability: ease with which the conductive black can be wetted with the resin and subsequently de-agglomerated.

To help you understand the performance of these products, we have developed an animated product selector. This star diagram tool allows you to compare conductivity performance at equal black loading, while the other performance criteria are compared at equal conductivity levels. Performance improves from chart center.