The principle of anti-static work clothes to eliminate static electricity
Anti-static work clothes refer to work clothes sewn with anti-static fabric as the fabric to prevent the accumulation of static electricity on the clothing. Anti-static fabric is a fabric formed by mixing conductive fibers or anti-static synthetic fibers or both at roughly equal intervals or evenly during weaving. Conductive fiber refers to a general term for fibers made of conductive materials or sub-conductive materials that are wholly or partly made of metals or organics. The volume resistivity ρv∼ is between ¹04∼¹09Ω/cm. According to the distribution of conductive components in the fiber, the conductive fibers can be divided into uniform conductive components, conductive components covering type and conductive component composite type³. At present, most anti-static fabrics are made of conductive fibers, especially the conductive component composite type, that is, composite fibers are used most often.
The anti-static work clothes made by adding conductive fibers to chemical fiber fabrics are based on two mechanisms: leakage and neutralization of charges. When grounded, the static electricity on the fabric is neutralized by the corona discharge of the conductive fiber, and can also be discharged to the ground through the conductive fiber; when it is not grounded, the weak corona discharge of the conductive fiber is used to dissipate the electricity.
Practice has shown that anti-static work clothes can effectively suppress static electricity in clothing and eliminate or reduce the hazards of electrostatic discharge. The following table shows the comparison of the human body electrification when the operator wears different work clothes.
The static voltage of the human body when wearing various professional work clothes (relative humidity ¹5%)