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Mistakes and existing problems in electrostatic protection
Time：
2023-04-21
1. Mistakes in electrostatic protection It is the wrong way to connect the power supply to zero and share a grounding source with lightning protection grounding and static grounding. Lightning strikes can affect product performance and personal safety through the circuit. When using a humidifier to increase humidity during anti-static measures, long-term use of this method will gradually cause a chemical effect on the components in the environment due to the water film on the surface, accelerating the corrosion of metal parts and causing short circuits in the components. Wearing anti-static shoes is an indispensable part of anti-static treatment. But people have relatively few requirements for socks, and thick woolen blankets in winter can affect the anti-static effect.
1. Mistakes in electrostatic protection
It is the wrong way to connect the power supply to zero and share a grounding source with lightning protection grounding and static grounding. Lightning strikes can affect product performance and personal safety through the circuit. When using a humidifier to increase humidity during anti-static measures, long-term use of this method will gradually cause a chemical effect on the components in the environment due to the water film on the surface, accelerating the corrosion of metal parts and causing short circuits in the components.
Wearing anti-static shoes is an indispensable part of anti-static treatment. But people have relatively few requirements for socks, and thick woolen blankets in winter can affect the anti-static effect.
2. Existing problems
Composite conductive plate is a decorative plate mixed with internal antistatic agent. Its conductivity is poor and not durable due to ion constraints. Rubber sheets mixed with conductive fillers mainly contain conductive carbon black, which has poor color and wear resistance. A high polymer board with conductive fibers or other conductive fillers, mainly composed of polyvinyl chloride (PVC), has good conductivity, wear resistance, acid and alkali resistance, is also relatively stable, and its color is also acceptable. However, the process is more complex and the cost is higher. At the same time, products with high conductivity, good color, good durability, good processability, and affordable prices still need technological progress.
Raised floor. At present, steel, aluminum, plastic or wood is usually used as the base plate of the raised floor produced in China, and the surface is covered with decorative boards mixed with internal antistatic agent as the surface layer. The disadvantage is that the conductivity of the surface layer is not durable enough. The surface layer must ensure that it can quickly remove static electricity from the human body, and the durability of conductivity needs to be improved. Conductive adhesive should be used for bonding between the board substrate and the surface layer. The adhesive should have high adhesion and a certain degree of elasticity. Currently, common defects are surface layer warping or cracking.
The electrostatic protection in the production process of electronic products involves the entire process from the selection and ordering of electrostatic sensitive devices, factory acceptance, storage, assembly and welding of products, to debugging and packaging; Involve the participation and cooperation of various departments and personnel in technology, management, production, etc. Static electricity protection is a comprehensive system engineering, and only when leaders attach importance to it, all parties participate, and have a strong awareness of static electricity protection can significant protective effects be achieved to reduce losses.
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