Do you know the principles, classification, application and purchase of anti-static work clothes?

Do you know the principles, classification, application and purchase of anti-static work clothes?

The principles, classification, use and purchase of anti-static work clothes
Anti-static work clothes are woven from an unusual fabric to prevent the accumulation of static electricity in clothing, which may cause safety hazards and cause accidents. work wear.
　1. Principle and classification
There are many varieties of anti-static fabrics, and there are roughly three types:
The first method is to use an antistatic agent to perform resin post-finishing on the fabric. After padding and baking, it adheres to the surface of the synthetic fiber fabric, so that the fabric has a certain antistatic effect. This method is now only used in civilian work clothes to overcome static electricity phenomena such as clothing entanglement, spark discharge, pollution and ash absorption.
Antistatic agents such as phosphate esters, sulfonates and other surfactants are added inside the nylon polymer, or third monomers are introduced to obtain durable antistatic fibers. Since most antistatic agents in additives are surfactants that react or decompose when exposed to alkali, alkaline cleaning agents should be avoided when finishing or cleaning fabrics to prevent them from affecting the antistatic effect. This fiber is suitable for dust-free fabrics. Clothing, sterile clothing, and can also be used for civilian work clothes.
The third type is in general fabrics Mixed with conductive fibers, this antistatic fabric is now generally accepted and recognized because it is not affected by the environment. The antistatic properties of this antistatic fabric and the type of conductive fiber and the distribution of conductive components (metal, graphite, carbon black, etc.) in the fiber can be divided into uniform conductive component type, conductive component covering type, and conductive component lamination type. There are four types of mixed types with conductive components. Other laminated conductive fibers containing conductive components such as carbon black and graphite can be directly used as filaments for weaving. By embedding a conductive filament at certain intervals (such as about 1.5 cm) in the warp yarns, good results can be obtained. It has anti-static effect and is currently the best conductive fiber used to weave anti-static clothing fabrics.
　2. Product classification
Static-removing work clothes can be divided into Class A and Class B according to different cleaning resistance times. Among them, the cleaning resistance time of grade A should be ≥33.0 h, and the cleaning resistance time of grade B should be ≥16.0 h.
　3. Main technical properties of anti-static workwear
Anti-static workwear must be produced in accordance with national standards. The currently effective national standard is GB 12014-1989 “Static-removal workwear”. The main technical requirement of anti-static work clothes is anti-static performance, that is, the amount of electric charge of each piece of anti-static work clothes. This requirement is directly related to the protective performance of the product. In addition, the breaking strength of seams, metal accessories, linings and clothing materials are technical indicators that affect the wearing and anti-static effect of work clothes.
　4. How to choose anti-static work clothes
　1. Structural requirements
　 (1) It is convenient and comfortable to wear, easy to release, and conducive to human body activities.
　 (2) Normal work attire Metal accessories are not allowed. When they must be used (buttons, zippers, etc.), make sure that the metal accessories are not directly exposed when wearing.
　 (3) All work clothes should be Use antistatic fabric and no lining. When a lining (bag, reinforcement cloth, etc.) must be used, the exposed area of ​​the lining accounts for less than 20% of the exposed area of ​​the entire anti-static work clothes; when it exceeds 20% (such as cold-proof clothes or emergency work clothes), the exposed area should beThe mask and liner are removable.
　2. Style requirements
General work wear tops are “three-tight” , the bottoms are straight pants; or a “three-tight” jumpsuit.
5. Usage and precautions
1. Under normal circumstances, any place where explosive gas mixtures appear continuously, frequently for a short period of time or exist for a long time and where explosive gas mixtures are likely to appear In places where the minimum ignition energy of combustibles is less than 0.25 mJ, anti-static work clothes should be worn.
Put on and take off static work clothes in explosion areas.
　3. It is prohibited to perform static electricity removal work Attach or wear any metal objects.
　4. Wear and wear anti-static work When installing, it should also be used with anti-static shoes, and the ground should also be a conductive floor.
5. Anti-static work equipment should be used Keep it clean and maintain anti-static performance. After use, scrub with a soft brush or soft cloth dipped in neutral detergent to avoid damaging the fabric fibers.
　6. After wearing for a period of time , the anti-static clothing should be inspected. If the static performance does not meet the standard requirements, the anti-static clothing can no longer be used.

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