About the role of anti-static work clothes
As for the material, please use antistatic fiber, which uses part of the conductive thread including the lining, and if it is unavoidable to use a non-antistatic material as a lining for reinforcement or pocket lining, the area is antistatic. It is stipulated that the exposed area of the front or back of the work clothes shall not exceed 20%.
For lining antistatic clothing fabrics (such as cotton cold clothes, etc.), the outer layer and lining should use antistatic woven and knitted fabrics. In principle, do not use wool fabrics (perforated). If it is unavoidable to use non-antistatic woven fabrics on collars, cuffs, etc., the area of this area shall not exceed 20% of the exposed area of the front or back of the antistatic clothing.
For metal fittings (with buttons and fasteners), please make their structure not directly exposed to the outside.
Generate static electricity
About the generation of static electricity
The simple principle of static electricity generation I think that when most people walk on the carpet in the hotel corridor and then touch the door handle, they will encounter the danger of picking up and electric shock, otherwise it is difficult to remove the paper from the OHP paper. However, this is due to "electrostatic charging". All substances have "charges." There are two types of charge, positive and negative, the same type has the property of repulsion, and different types have the property of attraction. When the substance is neutral, the amount of positive and negative charges is the same, but when it is used with other objects, charges will be exchanged between the two, resulting in excess or deficiency of positive or negative charges. Therefore, one can be considered positively charged and the other negatively charged.
Factors that generate static electricity Static electricity is generated through processes such as friction, contact (peeling) and induction. One kind. Friction charging The electrostatic phenomenon (for example, the friction of clothes, the abrasion of the floor and shoes) generated by the friction of two insulators is called friction charging. If the friction is large, the amount of charge will increase. It is caused by the action of triboelectric contact and is considered to "increase the contact charge at the contact point". B. Contact (peeling) charging is like peeling off the protective sheet attached to the plastic, the contact/separation (peeling) of two objects will also charge it. The static electricity generated when solids are in contact is usually described as a continuous phenomenon in the process, as shown in Figure 2. (A) is a state where uncharged objects A and B are placed separately from each other. In (I), A and B are in contact with each other, and the charges move between AB and are in an equilibrium state on the contact surface. In (c), the interface between A and B in an equilibrium state is separated, and the transferred electric charge remains in A and B and is charged. C. Inductive charge electrostatic force is not only generated by physical phenomena such as contact and friction, but also by induction phenomena. This happens when a substance is inserted into an electric field (in an electromagnetic field) that exists between objects with different electric potentials. The inserted substance is an electrical conductor (conductor), but an insulator. The phenomenon depends on whether it is (non-conductive) or not.
The effect of static electricity on clothing
Static electricity itself is an ancient and new phenomenon, and current scientists still cannot answer the question "Why is static electricity generated?" However, much research has been conducted on when and how static electricity is generated. In short, synthetic fibers and plastics are prone to static electricity because the generated charges are difficult to escape. Under this mechanism, when two objects are in contact with each other, their affinities for electrons and ions (electron-carrying molecules) are different, so electrons and ions move between the two objects, one becomes +, the other becomes -. A state of charge has occurred. Next, when the two objects are separated, some + charge and charge recombination will occur during the separation process, but the remaining charge remains the same, and the greater the remaining charge, the greater the static electricity generated. That's why.
When static electricity is generated in the clothes, since the human body and the clothes are in contact with each other, cracks will occur when undressing.
About the electrostatic destruction of semiconductors
When a person wearing work clothes performs various tasks, friction is generated in the work clothes-underwear-underwear-human body system, and static electricity is generated in each system. In addition to preventing previous explosion accidents, in the occupation of semiconductors, antistatic work clothes must be worn to protect the processed semiconductor products from electrostatic damage caused by static electricity.
Overview of anti-static measures
For matters related to clothing, antistatic work clothes should be made of materials that generate less static electricity, and the generated static electricity should be quickly removed.