Static electricity is an objective natural phenomenon, which can be produced in many ways, such as contact, friction, peeling and so on. Electrostatic protection technologies, such as electronics industry, semiconductor industry, petroleum industry, weapons industry, textile industry, rubber industry and maritime and military fields, seek to reduce the losses caused by static electricity.
There are three main anti-static measures for human body: anti-static clothes, anti-static shoes and anti-static wrist bands.
(1) Anti-static shoes and anti-static wrist bands are used to conduct static electricity away from human body and avoid accumulation on human body.
(2) Ordinary clothes will generate great electrostatic voltage when walking (>; 1000V)。 But antistatic clothes don't happen when walking. This is the main function of antistatic clothing.
(3) Long antistatic clothing cannot shield the static electricity generated by the clothes inside (still >: 1000V).
(4) The grid antistatic clothing can shield (
The generated static electricity is introduced into the general grounding wire outside the factory building through the conductive floor and grounding wires everywhere.
(1) can be divided into preventing electrostatic generation and preventing electrostatic damage? .
(2) Electrostatic protection is a long-term systematic project, and mistakes or omissions in any link will lead to the failure of electrostatic protection.
(3) The main measures of electrostatic protection in the production process are electrostatic leakage, dissipation, neutralization, humidification, shielding and grounding.
(4) The human body electrostatic protection system is mainly composed of an antistatic wrist strap, an ankle wrist strap, work clothes, shoes and socks, a hat, gloves or finger covers, and has the functions of electrostatic leakage, neutralization and shielding.
(5) Anti-static treatment on the ground mainly includes anti-static ceramic steel-based composite raised floor, anti-static all-steel raised floor and anti-static porcelain brick.
Grounding is very important to reduce the electrostatic charge generated on the conductor. The human body is a conductor and the main source of static electricity. Therefore, we must reduce the electrostatic charge generated by people who touch sensitive anti-static components or parts. It is best to prevent static electricity on the human body by grounding it.
Several personal grounding devices:
(1) In industry, wrist strap is the most commonly used grounding device. Wrist band can safely and effectively discharge the static charge in your body, and it needs reasonable contact with the skin to play the role of wrist band. Dirty or loose wristbands may retain leaked electrostatic charges, making the anti-static control ineffective. Conductive shoes or foot grounding can be used to supplement wristbands.
Workstation grounding device
(1) Conductive or electrostatic dissipative working face is an indispensable part of electrostatic safety workstation, especially where manual assembly is carried out. When using a wristband, the work surface must be cleaned and properly connected to a common point. Conductive or electrostatic dissipative materials will generate electrostatic charges, but when they are properly grounded, they can effectively discharge them.
Conductive or electrostatic dissipative working surface is an important part of electrostatic safety workstation, especially where manual assembly is carried out. When using a wristband, the work surface must be cleaned and properly connected to a common ground point. Conductive or electrostatically dissipative materials will generate electrostatic charge, but if properly grounded, they can effectively release electrostatic charge.