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Methods to avoid static electricity of conveyor belt

Article source: admin release date: 2012-02-08

When the conveyor belt made of plastic and rubber materials is used in the process of static electricity generation, the positive and negative charges on the belt body will lose balance due to friction and produce static charge. The static charge is not easy to disappear on the surface of the conveyor belt. When it reaches a certain value, it will produce discharge sparks to ground objects, causing fire or gas explosion.
????? Antistatic methods at present, the anti-static methods of plastics are mainly to control the generation and accumulation of static electricity, and to control the generation of static electricity is to reduce the generation of static electricity by reducing or preventing friction; to control the accumulation of static electricity is mainly to accelerate the leakage of static electricity by grounding conduction, increasing the relative humidity of the environment and adding antistatic agents or conductive substances (such as conductive carbon black, metal powder, etc.), Avoid large accumulation of static electricity.
Therefore, in order to make the plastics with good insulation performance have certain conductivity, the following methods are mainly used:
1. Add antistatic agent to plastics or coat the surface of products with antistatic agent.
2. Add conductive fillers (such as conductive carbon black, metal powder, etc.) to the plastic.
3. The structure of the polymer was changed by graft copolymerization, so that it had more polar or ionic groups, and the conductivity was increased.
4. The surface of plastic products is oxidized with strong oxidant to increase the conductivity.
In the actual production process of PVC flame retardant conveyor belt, the method of adding antistatic agent and conductive filler in the coating formula is generally used to reduce the surface resistance and volume resistance of the conveyor belt, so that it has certain antistatic performance.