Characteristics analysis of anti-static fabrics for electrostatic protective clothing
Anti-static fabric is made of anti-static fiber blend. Its electrical conductivity meets the requirements of Japan's "Static Safety Guidelines". The fabric is highly durable and can be widely used by workers in flammable and explosive gas, dust, petroleum, chemical, pharmaceutical, and electronic industries.
Textile materials, especially synthetic fibers with low moisture absorption properties such as polyester, acrylic, and chlorine fiber, generally have high specific resistance. Therefore, during the textile processing process, static electricity is generated due to the close contact and friction between fibers or fibers or between fibers and machine parts, resulting in hairy slivers, increased yarn hairiness, poor package formation, fiber sticking to machine parts, and yarn breakage. The head increases, and dispersed stripes are formed on the cloth surface.
After clothing is charged, it will absorb a large amount of dust and be easily stained. In addition, clothing and the human body, clothing and clothing may also become entangled or generate sparks. Therefore, static interference affects the smooth progress of processing, the quality of products and the wearing properties of fabrics. When the static electricity phenomenon is severe, the static voltage can reach several thousand volts, which can cause sparks due to discharge and cause fires with serious consequences. Anti-static fabrics are fabrics that have been treated with anti-static processing. After being washed 100 times at a temperature of 20±5°C and a humidity of 30-40%, the average surface charge density of anti-static fabrics is ≤7.0μc/m2. The dyeing requirements for anti-static fabrics are light mercerization and no sanding. Please try to control the dosage of oxygen bleach to 80%.
There are usually several processing methods for anti-static fabrics:
First, the fabric is finished with an antistatic finishing agent;
Second, fiber grafting modification, blending and interweaving of hydrophilic fibers for the purpose of improving fabric hygroscopicity;
Third, blending or inlaying conductive fibers; the mechanisms of the first two methods are to increase fabric moisture regain, reduce insulation, and accelerate static electricity leakage. Therefore, if the processing effect is not durable or significant in a dry environment or after multiple washings, it is usually used on ordinary clothing fabrics.
Only the third method can permanently and efficiently solve the static problem of textiles, so it is widely used in the production of anti-static work clothes. The fabric is finished with an antistatic finishing agent. The types of anti-static fabrics include: anti-static silk (conductive silk) and anti-static ultra-clean fabrics, anti-static tc fabrics, anti-static tr fabrics, anti-static cvc fabrics, anti-static cotton fabrics, etc.
It is worth mentioning that organic conductive fibers have played an effective role in eliminating static electricity in anti-static work clothes fabrics and ordinary civilian textiles. However, compared with conventional textiles, the electrostatic performance testing of textiles containing conductive fibers requires less accuracy and attention. The approach deteriorated significantly. Choosing reasonable testing methods and correctly evaluating the electrostatic properties of conductive fiber-containing fabrics are necessary basic work for in-depth research on the processing technology of organic conductive fibers, the production technology of conductive fiber-containing textiles, and guiding the rational application of such textiles. We analyze the adaptability of my country's current relevant test method standards to the antistatic performance testing of textiles containing conductive fibers.
Clothes made of anti-static fabrics are mostly made of stainless steel fiber, sub-conductive fiber, anti-static synthetic fiber and polyester-cotton blended or blended fabrics. They can automatically discharge corona discharge or leakage discharge, which can eliminate the charging of clothes and the human body, and at the same time provide anti-static protection. Hats, socks, shoes. Among them, anti-static work clothes can prevent the accumulation of static electricity in clothes and are made of anti-static fabrics. Anti-static fabrics can prevent the accumulation of static electricity in clothing. When weaving, conductive fibers are mixed into the fabric at roughly intervals or evenly.