Carbon black is a conductor of electricity (conductive carbon black)

Use of anti-static conductive coatings, especially anti-static floor coverings, is increasing. The ever-increasing and comprehensive expansion of electronic industries and other related industries in all dimensions of human’s daily life, development and research to find new ways and combinations, effective and at the same time with a suitable price for the production of anti-static coatings, is an unavoidable thing. Because common polymer coatings such as epoxies, polyurethanes have the property of trapping electric charge. Antistatic coatings can also be used as coatings to prevent the interference of waves by making modifications and changes.
The main reasons for using these covers include the following.
– Accumulation of dust on the surface and negative effect on the appearance.
– Impact on the performance of electronic devices, destruction of shock-sensitive parts and electronic devices.
– Loss of information on memories
– Causing damage and injury caused by electric shock
– The occurrence of explosions and fires in weapons warehouses, airplane hangars and environments containing explosive materials. The process of creating a static electric charge is very simple, so that whenever two dissimilar surfaces come into contact with each other, and in better words, there is friction between them, a static electric charge is created. Even when walking on surfaces with flooring, it is easy Static electric charge is created. But if the flooring and its adhesive material are conductive to the ground, the electric charge produced is easily transferred to the ground. If the floor covering and its adhesive material have high electrical resistance, the created static charge remains on the surface and creates danger. As a result, a coating that has a certain amount of electrical conductivity and can conduct or spread the generated static electric charge to the ground is called antistatic coating.

Antistatic coatings are divided into the following three categories according to the amount of electrical conductivity:

Conductor of electric current 2.5*10^4-10^6 Ohm

Spreader of electric charge 10^6-10^9 Ohm

Conductive 10^9< Ohm

In theory, there are basically three ways to increase the electrical conductivity of a coating:

– Using intrinsically conductive polymers as the main polymer matrix

– The addition and combination of conductive additives in the polymer network

– Combination of the above two methods Among the above methods, the use of electrically conductive additives such as metal powders, graphite, soot (carbon black) and recently carbon nanotubes have significant industrial applications.