Static electricity generation and anti-static parameter standards
When it comes to static electricity, it is natural to think of anti-static consumables. In the process of anti-static, anti-static gloves, anti-static shoes, anti-static clothing and other personal protective products have been well used. In the dust-free anti-static room, only the correct selection of anti-static gloves and other products will be used to provide useful protective effects.
ESD has been constructed since the middle of this century to study the occurrence and attenuation of static electricity, electrostatic discharge models, electrostatic discharge effects such as current heat (spark) effects (such as ignition and blasting caused by static electricity), and electromagnetic effects (such as electromagnetic interference). Subject.
In recent years, with the rapid development of science and technology, the widespread application of microelectronic technology and the increasingly chaotic electromagnetic environment, more and more attention has been paid to the electromagnetic field effects of electrostatic discharge such as electromagnetic interference (EMI) and electromagnetic compatibility (EMC). It can be seen that the damage of static electricity is very large, so products like anti-static gloves are certainly not indispensable.
The amount of electricity charged by the object is usually indicated by the amount of electrostatic charge and electrostatic voltage. The measured data such as plastic, rubber, anti-static floor (face), carpet, etc., anti-static function, common resistance, resistivity, volume resistivity, surface resistivity, charge (or voltage) half-life, electrostatic capacitance, dielectric constant, etc. But the most commonly used and most reliable are still resistance and resistivity.
ESD can occur because the dust in the air collides with each other during the movement. If it is not dusted, it is hard to say the reason for the ESD problem. Ordinary people rely on anti-static supplies such as dust removal systems and anti-static gloves, anti-static shoes to deal with this problem. The first priority is to have an air dust filtration system, such as: wind-free dust transfer window, clean room air shower transfer window. Staff can wear anti-static clothing.
Secondly, as far as possible, establish purification lamps, clean room purification glass, clean room color steel plate ceiling, clean room color steel plate wall corner, clean room color steel plate column and so on. The selection of the above equipment, each enterprise should be based on the degree of activity of the product on the ESD, the best to learn the definition of professionals. It is also very important to establish a complete and perfect ESD grounding system for a complete ESD protection working environment.
This shows how important anti-static products such as anti-static shoes and anti-static gloves are. About anti-static gloves, conductive wire distance: 10mm; external resistance 10 7th power; electrostatic decay time <0.1sec; charged charge <0.3 μC/pair; number of scrubbing: A grade > 100 times; B grade > 50. After consulting these, we will adjust to better avoid static damage.