Dust-proof coveralls should be regularly tested for anti-static performance
I believe many people know that friends who work in a clean room must wear a dust-proof one-piece suit for work, so what are the requirements for the dust-proof one-piece suit to be tested? How to test the anti-static performance of general dust-proof jumpsuits? Experts say that the anti-static performance of dust-proof jumpsuits should be tested regularly. Why is this? Because the dust-proof jumpsuits 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 clothes with good anti-static performance are not easy to vacuum, which is one of the reasons why dust-proof clothes are worn in the clean room. In electronic operations, static electricity can damage tiny circuits. When people move in the clean room, their dust-proof jumpsuits will rub against the seats, workbenches, and anti-static work clothes and skin worn inside, thereby generating static electricity in the clothes. This static electricity can be discharged to the integrated circuit and destroy it. Therefore, in the production of clean clothing fabrics, continuous wires made of conductive materials are sandwiched within the fabric.
When you want to choose the clothing with the lowest electrostatic discharge in the dust-proof jumpsuit, you can test the dust-proof jumpsuit: Another way to measure the anti-static performance of the fabric is to observe the decay time of static electricity on the fabric. 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.
Generally measure the resistivity or conductivity of the dust-proof jumpsuit; measure the attenuation of the voltage; measure the voltage generated when the person wears the dust-free jumpsuit for activities. There are several ways to test 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.