How to prevent static electricity in plastic materials
Plastic objects are very prone to static electricity, because plastics are not electrically conductive to carry static electricity, and only conductive objects will allow excess charge to be released through the ground. How to prevent static electricity in plastic materials? We analyze it from chemical static elimination and physical static elimination.
First, the chemical elimination method:
(1) Apply an antistatic agent to the surface of the material to form a solid static elimination coating on the surface of the material.
(2) An antistatic agent which has a moisture absorbing property and is harmless to plastics to reduce the electrical resistance of the surface thereof is added to the plastic material. According to the type of antistatic agent selected by different plastic varieties; whether it is ionic non-ionic type, it is a hygroscopic antistatic agent. After adding these additives, the moisture in the air is absorbed by such materials to reduce the surface resistance. Reach antistatic performance.
Second, the physical elimination method: does not change the nature of the material to use static properties to eliminate, is the most commonly used method.
(1) The grounding elimination method uses a metal conductor to connect the substance to be electrostatically removed to the earth and to the same potential as the earth, but this method has no effect on the insulator.
(2) Humidity control elimination method The surface resistance of the material decreases as the humidity of the air increases, so increasing the relative humidity of the air can increase the conductivity of the surface.
(3) Principle of static elimination equipment selection Inductive static eliminator rod: Inductive static elimination brush, the principle is that when the tip of the consumer is close to the charged body, the polarity opposite to the electrostatic polarity on the charged body is induced. This neutralizes the static electricity.