Principles of electricity dissipation in work clothes woven with conductive yarn interwoven anti-static fabrics
Anti-static work clothes are made of anti-static fabrics. Anti-static fabrics can be divided into two categories. One is the back and the back. To finish the fabric, add an antistatic agent to the fabric for post-finishing to achieve the antistatic effect. The other type is when weaving fabrics, anti-static fabrics woven using various technologies such as conductive yarn interlacing/blended chemical fiber fabrics. The following mainly explains the electricity elimination mechanism of anti-static fabrics and anti-static work clothes.
Antistatic fabrics are currently mainly made of conductive spun yarns containing conductive fibers and conventional spun yarns using certain technologies.
The conductive function of the conductive fiber is realized by the electronic conduction mechanism and has no humidity dependence; its charge half-life is extremely short, and it can remove static electricity in a very short time under any circumstances.
Most of fabric fibers and their products are polymer materials. The conductive mechanism of polymers can be divided into two types: electronic conductivity and ion conductivity:
The carriers of electronic conduction are electrons and holes;
The carriers of ionic conductivity are positive ions and negative ions.
Anti-static fabrics and work clothes made of conductive fibers and conventional fibers, the static electricity removal is the result of the combined action of two mechanisms: electronic conductivity and ion conductivity.
The mechanism of antistatic fabrics and work clothes containing conductive fibers that remove static electricity is related to whether the conductive fibers are grounded.
The process of using ungrounded conductive fibers to remove static electricity from fabrics and work clothes is roughly as follows:
1. Fabrics and work clothes containing conductive fibers are electrostatically charged due to friction, contact, separation, etc.;
2. The charge generated in the fabric or work clothes (charged body) merges with the conductive fiber, and the conductive fiber induces
And the fabric or work clothes are charged with opposite charge signs;
3. A strong electric field is induced near the conductive fiber, causing the air around it to be ionized by the electric field;
4. The positive and negative ions generated by corona discharge neutralize the oppositely charged ions in the fabric or work clothes and transfer them to the fabric
Or the work clothes move, neutralize the charge on the fabric or work clothes, and remove the static electricity.
The process of using grounded conductive fibers to remove static electricity from fabrics or work clothes is roughly as follows:
During the corona discharge, charges are induced to accumulate around the conductive fibers and then leak into the earth. When a charged body (fabric or work clothes) and a grounded conductive fiber are close to each other, positive and negative ions are generated around the conductive fiber. Among them, the ions with the opposite charge to the charged body move to the charged body and are neutralized, and have the same charge as the charged body. The ions leak to the ground through the conductive fiber, and the static electricity is removed.
※When fabrics and workwear using low-proportion metal fiber conductive spun yarns are used, the conductive fibers are not grounded;
When only wearing anti-static work clothes, the conductive fibers are not grounded
When wearing anti-static work clothes and anti-static shoes and socks, the conductive fiber is grounded.
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