What must be regularly tested anti-static parameters
If the dust-free clothes worn by workers in the clean room want to have a good dust-proof effect, their anti-static performance is also very important. Because the anti-static performance is good, the clothes are not easy to absorb dust.
In electronic operations, static electricity can damage tiny circuits. When people move in the clean room, their dust-free jumpsuits will rub against seats, workbenches, underwear and skin worn inside, thereby generating static electricity on the dust-free jumpsuits outside. This static electricity can be discharged to the integrated circuit and destroy it. Therefore, when producing clean clothes fabrics, the fabrics are woven with continuous conductive fibers made of conductive materials.
When selecting a garment with the lowest static discharge for a clean coverall, perform the following test:
Another way to measure the antistatic performance of fabrics is to observe the decay time of static electricity on fabrics. This method is better than measuring conductivity. First generate a charge with a known voltage on the fabric, and then measure the time it takes for the voltage to drop to 1/2 or 1/10 of its original value. The time may vary from less than 0.1 second to greater than 10 minutes. The shorter the time, the better the anti-static effect of the fabric.
Measuring resistivity or conductivity; Measuring the attenuation of voltage; Measuring the voltage generated when people wear dust-free clothes. There are several methods for testing the surface resistivity of fabrics. The lower the resistance, the better the fabric because the lower the resistivity, the easier it is for static electricity to conduct away.