Antistatic coatings are coatings with discharge function applied on the surface of plastics and other insulators. In fact, as long as the surface resistance of the coating film can be reduced by some means, it may have an antistatic function. Anti-static coating is also a kind of conductive coating. Since electrostatic protection is very important to electronics, aviation, aerospace, post and telecommunications, computer , electric power and textile industries, anti-static coating has been valued as a functional coating.
The treatment effect of antistatic coatings is usually judged by measuring the surface resistivity, and the resistivity is below 10 11 Ω·cm as effective. Fat electrostatic coatings can be prepared by adding conductive fillers and antistatic agents , or by using conductive resins.
As the conductive filler, graphite, conductive carbon black, carbon fiber, metal fiber, metal foil, conductive metal oxide, and the like can be used.
The anti-sedation agent can use moisture-absorbing agents such as sorbitol, glycerin, and polyethylene glycol, and surfactants amines, quaternary ammonium salts, alkyl sulfonic acids, alkyl phosphates, and other ion-conducting or proton-conducting agents. compound .
The conductive resin can be polyacetylene, concentrated solution , polypyrrole, polyimide containing metal, polyvinyl alcohol containing metal wait.
