Anti-static fabric
Explain why the detection of anti-static properties of clean and clean clothes is so important. Is the generation of static electricity from a large amount of dust an accomplice?
The clean and dust-free clothing worn by workers in the clean room is good for dust prevention, and its anti-static performance is also very important. Because the anti-static performance is good, the clothes are not easy to vacuum.
In electronic operation, static electricity can damage tiny circuits. When people move in the clean room, their clean clothes will rub against the seats and work tables with the anti-static overalls and skin worn inside, causing static electricity in the clothes. This static electricity is released to the integrated circuit and destroyed. Therefore, in the production of clean clothing fabrics, the fabric inside the fabric is sandwiched by continuous wires made of conductive material.
When choosing the garment with the lowest electrostatic discharge, the following tests can be performed:
Measure resistivity or conductivity; measure voltage attenuation; measure the voltage generated by an anti-static clean suit. There are several ways to test the surface resistivity of a fabric. The lower the resistance, the better the fabric, because the lower the resistivity, the easier the static electricity is to conduct.
Another way to measure the antistatic properties of a fabric is to observe the decay time of the static electricity on the fabric. This method is better than measuring conductivity. A charge of known voltage is first generated on the fabric and then the time required for the voltage to drop to 1/2 or 1/10 of its original value is measured. This time can vary from less than 0.1 seconds to more than 10 minutes. The shorter the time, the better the anti-static effect of the fabric.