It is generally believed that wearing pure cotton work clothes can prevent the accumulation of static electricity in clothing, so it is safe, in fact, this view has a one-sidedness. This is true only when the relative humidity of the air is above 50%; When the relative humidity is relatively low, the electric capacity of pure cotton products increases significantly.
The results show that when the relative humidity is lower than 30%, the electric capacity of pure cotton fabric is equivalent to that of polyester fabric. When the relative humidity is less than 20%, the electric capacity of cotton fabric is even higher than that of some chemical fiber fabrics. Therefore, in dry climates, cotton products can not be expected to eliminate electrostatic hazards in clothing under any circumstances.
For the above reasons, in order to effectively prevent the harm of static electricity on the human body, the operator must wear anti-static work clothes.
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