What are the conductive materials?
Conductive materials can be divided into metal conductive materials (metal elements, alloys, composite metals, special functional conductive materials), composite polymer conductive materials (nickel-coated graphite powder, nickel-coated carbon fiber carbon black, metal powder, metal foil, metal fiber , carbon fiber, etc.), structural polymer conductive materials (polymer semiconductors, polymer metals and polymer superconductors).
What are the materials with better conductivity than carbon black?
Conductive carbon black is not the material with the best conductivity. Among many conductive materials, the conductivity of conductive carbon black is ranked behind. The conductivity of conductive materials like metals completely exceeds that of conductive carbon black.
What is the reason for the poor conductivity of adding carbon black?
If the selected conductive carbon black itself has high electrical conductivity, the electrical conductivity of the finished product still cannot reach the expected effect. A large part of the reason is that the dispersion of conductive carbon black is not good. As long as the dispersion problem of conductive carbon black is solved, a part of the conductivity can be improved. For details, please read: What are the methods to improve the dispersion of conductive carbon black?
What are the factors that affect the conductivity of conductive carbon black?
There are five major factors affecting the conductivity of carbon black, namely conductive carbon black particle size, conductive carbon black structure, carbon black roughness, carbon black surface volatile matter, carbon black ash and moisture. Of course, if the problem of carbon black dispersion is not solved, no matter how well other factors are solved, it is useless.
Although the conductivity of conductive carbon black is not the best, many industries still like to choose conductive carbon black as conductive material. The main reason is that the price of conductive carbon black is cheap. The conductivity of the product is still good.