Methods to eliminate static electricity include conductive material (conductive carbon black, metal powder, etc.) filling method, conductive device method, and antistatic agent.
Antistatic agent (surfactant) is used to eliminate static electricity of plastic products. There are external coating method and internal addition method. The former has poor durability and is mostly used for temporary or short-term electrostatic treatment, and has a narrow application range; the ionic and non-ionic surface activity used in the internal addition method is selected separately due to the structural characteristics of the base resin.
The principle of antistatic effect: reduce the coefficient of friction and make it difficult for glass fiber to generate static electricity. Both cationic quaternary ammonium lubricants and imidazoline lubricants have antistatic effects.
A conductive channel is formed so that the charge can be quickly removed from the surface of the fiber. For organic antistatic agents, such as polyoxyethylene castor oil, polyoxyethylene laurate, polyethylene glycol, etc. They all contain ether segments, which are easily combined with moisture in the air through hydrogen bonds and form conductive channels. These hygroscopic organic compounds can be used together with ionic quaternary ammonium salts, tertiary amine salts or carboxylate organic compounds. Achieve better antistatic effect.
Another type of most commonly used antistatic agents is inorganic salts, which have a strong tendency to form hydrates and become salts with crystal water. That is to say, it has strong moisture absorption and dissociates into ions while absorbing water on the sizing agent film, so the conductive effect is very good.