Explain the electrostatic discharge principle of anti-static table mat in detail
Anti-static table mat/floor mat refers to a kind of ESD control product that is installed by specific methods to prevent static electricity from accumulating and protect the human body and objects from electrostatic discharge, such as the tooling table in the electronics (device) industry operation room, Laying of the ground and the computer room floor of the computer room. The important raw material of the product is rubber, which is composed of upper and lower layers. The upper layer is the static dissipative layer, and the lower layer is the conductive layer (black). It has excellent antistatic effects, abrasion resistance, impact resistance, aging resistance, smooth and clean surface, stable dimensions, etc. advantage.
In order to make the ESDS tweezers, tools, appliances, and meters in contact with the human body and the countertop in the electronic workshop reach a uniform potential and release static electricity, and at the same time protect the electrostatic sensitive devices from the interference of electrostatic discharge phenomena such as friction electrification, the simplest method is Lay an anti-static table mat on the desktop. What is its electrostatic discharge principle?
We first cut the anti-static table mat according to the size of the work surface, and then buckle one end of the anti-static ground wire on the surface of the table mat, and the other end is connected to the outdoor grounding electrode leading to 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: A green surface is for storage and absorption of static electricity around the desktop, and its resistance is 107~109Ω/sq; B black bottom surface is conductive layer ≤106Ω /sq, because it is a conductive layer, it can quickly discharge the absorbed static electricity.
Understand the principle of electrostatic discharge of the anti-static table mat, we must carry out targeted maintenance during work and use, and can not damage the electrostatic dissipative surface and conductive layer. At the same time, check the performance of the electrostatic grounding wire regularly.