Explain the principle of static discharge of anti-static mats
Anti-static mat/floor mat refers to an ESD control product that adopts a specific method to prevent static electricity accumulation and protects the human body and objects from electrostatic discharge. For example, the tooling table in the operation room of the electronic (industrial) industry, The floor of the machine room on the ground and computer room. The important raw material of the product is rubber, which consists of two layers. The upper layer is the static dissipative layer and the lower layer is the conductive layer (black). It has excellent anti-static effect, wear resistance, impact resistance, aging resistance, smooth and smooth surface, dimensional stability, etc. advantage.
In order to make the ESDS tweezers, tools, instruments, meters, etc. in contact with the human body and the table in the electronic workshop reach a uniform potential and release static electricity, and at the same time, the electrostatic sensitive device is not interfered by electrostatic discharge phenomena such as triboelectric charging, the simplest method is Lay an anti-static mat on the desktop. What is its electrostatic discharge principle?
We first cut the anti-static mat according to the size of the work surface, and then fasten the end of the anti-static grounding wire on the surface of the mat, and the other end is connected to the grounding pole of the earth. In this way, the static electricity collected on the surface of the table mat is discharged through the anti-static grounding wire. The principle is as follows: A green surface is used for storing and absorbing static electricity around the table top, and its resistance is 107~109 Ω/sq; B black bottom surface is conductive layer ≤106 Ω. /sq, because it is a conductive layer, it can quickly discharge the absorbed static electricity.
Understand the electrostatic discharge principle of anti-static mats, we must carry out targeted maintenance during work and use, and can not damage the static dissipative surface layer and conductive layer. Also check the performance of the electrostatic ground wire regularly.