Elimination of static electricity in anti-static coveralls
Anti-static coveralls are special work clothes with antistatic properties suitable for electronics, optical instruments, pharmacy, microbiological engineering, precision instruments and other industries. The clothing is generally a synthetic fabric with conductive yarns, which can be divided into two-pieces. Anti-static dust-free clothing and three-piece anti-static coveralls.
The anti-static coverall is made of anti-static and dust-proof fabric (commonly known as conductive silk), which is made of special polyester filament and high-performance, long-lasting conductive fiber through a special process. It has excellent and long-lasting anti-static and dust-proof functions, which can effectively release the human body. Electrostatic charge.
(1) First of all, anti-static work clothes refer to work clothes sewn with anti-static fabrics to prevent the accumulation of static electricity on the anti-static coveralls. 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.
(2) Conductive fiber refers to the general term for fibers made of conductive materials or sub-conductive materials that are all or part of metals or organics, and their volume resistivity ρv is between 104 and 109 Ω/cm. According to the distribution of conductive components in the fiber, conductive fibers can be divided into three types: uniform conductive component, conductive component covering type, and conductive component composite type. 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.
(3) Anti-static coveralls made of conductive fibers are added to chemical fiber fabrics, and its electricity dissipation is 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.