Antistatic fabrics' static elimination methods
Antistatic coveralls are special work clothes with antistatic properties suitable for industries such as electronics, optical instruments, pharmaceuticals, microbiological engineering, and precision instruments. The fabric is generally a synthetic fiber fabric with inlaid conductive yarns. They can be divided into two-piece antistatic dust-free suits and three-piece antistatic coveralls. Antistatic coveralls are made of antistatic and dustproof fabrics (commonly known as conductive silk), which are made of special polyester filaments and high-performance long-lasting conductive fibers through a special process. They have excellent and long-lasting antistatic and dustproof functions and can effectively release static electricity from the human body. (1) First of all, antistatic work clothes refer to work clothes made of antistatic fabrics to prevent static electricity accumulation on antistatic coveralls. Antistatic fabrics are fabrics that are roughly evenly or evenly mixed with conductive fibers or antistatic synthetic fibers or a mixture of the two during weaving. (2) Conductive fiber refers to the general term for fibers made entirely or partially of conductive or sub-conductive materials made of metal or organic matter, with a volume resistivity ρv~ between 104 and 109 Ω/cm. According to the distribution of the conductive components in the fiber, conductive fibers can be divided into three types: conductive component uniform type, conductive component covered type, and conductive component composite type. At present, the vast majority of anti-static fabrics are made of conductive fibers, among which the conductive component composite type, that is, composite fibers, is the most commonly used.
(3) Anti-static coveralls made of chemical fiber fabrics with conductive fibers added to them are based on two mechanisms of charge leakage and neutralization. When grounded, the static electricity on the fabric is not only neutralized by the corona discharge of the conductive fiber, but can also be discharged to the ground through the conductive fiber; when not grounded, the static electricity is dissipated with the help of the weak corona discharge of the conductive fiber.