Mechanism of Action of Antistatic Agents
The mechanism of action of antistatic agents is to form a conductive layer on the material surface, reducing its surface resistivity, allowing the generated static charge to dissipate rapidly, imparting a certain degree of lubrication to the material surface, reducing the coefficient of friction, and inhibiting and reducing the generation of static charge. Therefore, the polarity of the antistatic agent, its compatibility with the substrate, and its dispersibility in the material all affect the antistatic effect. Based on the ionization and ionization characteristics of the hydrophilic groups in the molecule, antistatic agents can be classified into cationic, anionic, amphoteric, nonionic, and polymeric types. Generally, the antistatic agent should have a certain degree of compatibility with the matrix, but not too strong; ionic antistatic agents should be chosen for polar substrates, while nonionic antistatic agents are more suitable for weakly polar or nonpolar polymers.
