What are the better manufacturers of antistatic chairs in Shenzhen?

There are many kinds of antistatic products, but they can be mainly divided into the following categories:

1. Anti-static clothing and wristbands

Anti-static clothing and wrist strap are important parts of human anti-static system, which can eliminate or control the generation of human static electricity, thus reducing the main source of static electricity in manufacturing process.

Anti-static clothing includes anti-static clothing, smocks, shoes and hats, anti-static gloves, anti-static finger covers and anti-static foot covers. Anti-static clothing is made of anti-static cloth of different colors. Cloth yarn contains a certain proportion of conductive yarn, which is made by blending a certain proportion of stainless steel fiber or other conductive fiber with ordinary fiber. Static electricity on clothes is eliminated by corona discharge and leakage of conductive fibers. Because stainless steel fiber belongs to metal fiber, the conductivity of antistatic cloth woven with it is stable and does not change with the washing times of clothes.

Anti-static wrist strap is the most important electrostatic protection product for operators when they contact electronic components. Through the grounding path, the electrostatic charge carried by the human body can be safely released. It consists of anti-static elastic band, movable snap fastener, spring rope, protective resistor and plug or chuck. The inner layer of elastic band is woven with antistatic yarn, and the outer layer is woven with ordinary yarn. This is an antistatic jumpsuit, an antistatic wrist strap and an ankle wrist strap.

2. Anti-static packaging and transportation products, etc.

There are many anti-static packaging products, such as anti-static shielding bags, anti-static packaging bags, anti-static sponges, anti-static ic packaging tubes, anti-static component boxes (boxes), anti-static bubble films, anti-static trolleys and so on. In addition to the electrostatic conductors used for electrostatic shielding, most of these packaging products use electrostatic dissipative materials, and some of them use antistatic materials. The purpose is to play an electrostatic protection role for embedded circuits or devices and printed circuits.

3. Anti-static floor and table mat

Anti-static floor and mat are also indispensable in electrostatic protection engineering. There are also many kinds of anti-static floors, which are divided into permanent and temporary according to timeliness; According to materials, there are conductive rubber, PVC, conductive ceramics and so on. According to the way of laying, there are floors directly laid on the ground and movable floors. Can be determined according to actual needs and costs. If you need to walk on the ground in various cable and pipeline environments such as computer prevention, it is best to choose the raised floor laid overhead.

Anti-static table mats are mainly anti-static composite rubber sheets, which are mainly used to grab the table top, assembly line anti-static countertops, anti-static shelves and make floor mats. The surface layer of the material is grass green, and the conductive substance is antistatic agent; The bottom layer is black and the conductive substance is carbon black. In addition to the above three types of products, there are other anti-static products, such as anti-static electric soldering iron, anti-static seats, chair covers, anti-static maintenance sets and so on. Among them, anti-static soldering iron is often used for later process and maintenance. Generally, electric soldering irons need to be unplugged when welding electrostatic sensitive elements, while anti-static soldering irons use DC warm-pressure power supply, and heating elements are mostly made of materials with constant temperature characteristics and small electrostatic capacitance, which can greatly reduce various interference signals. In addition, the soldering iron can also be used for electrostatic grounding, which can further eliminate various signals on the welding head. Therefore, it is not necessary to unplug the power head during welding.

2. Electrostatic discharge apparatus (eliminator, electric neutralizer or ion balancer)

Static eliminator is another kind of antistatic equipment besides antistatic materials. Its main principle is that under the action of high-voltage electric field or radioactive rays, the air is ionized locally, and a large number of ion and electron pairs are produced, in which ions (or electrons) with opposite polarity to the charged body are close to the charged body and neutralized, thus achieving the purpose of eliminating static electricity. The main parameters are:

Effective extinction current IC; (& gt 1.0× 10-7A/cm)； —— the amount of charge generated by the extinction rod with unit length in unit time that can be neutralized;

Ion flow extraction efficiency h (ion wind); The ratio of the total number of ions extracted per unit time to the total number of ions generated by the discharge needle per unit time;

Electrostatic neutralization capacity n (ion wind); (> 250 v/s)-the voltage value that can eliminate static electricity in unit time.

The main types of electrostatic discharge instruments are:

Inductive electrostatic discharge instrument;

Composition: grounding needle electrode; Principle: local high pressure; Form: single needle, multi-needle, brush and silk; Material: conductive fiber cloth, serrated conductive film or rubber, brushed carbon fiber or metal fiber; Features: simple, passive, low electrostatic capacity, suitable for objects with high charge density, short action distance,10 ~ 20 mm.

High voltage eliminator:

Composition: high voltage power supply+discharge needle or rod; Classification: DC and power frequency;

The characteristics of DC eliminator are: strong elimination and wide range of action (150 mm ~ 600 mm); However, the short-circuit current is large and spark discharge is easy to occur.

The characteristics of power frequency canceller are: power drive, convenience, low power consumption, working distance of 25 mm ~ 35 mm, and the widest application range; But it needs frequent maintenance, such as dust removal and replacement of blunt needles.

Radioisotope eliminator:

Composition: isotope radioactive source+shielding frame+protective net;

Features: no power supply, simple structure and installation, convenient maintenance, no heat and no ignition, but poor heat dissipation, working distance of 20 ~ 30 mm

Ion wind eliminator:

Composition: DC high voltage power supply (or radioactive source)+corona discharger+air supply system;

Features: most applications, long working distance, wide application range (up to 1m), low power consumption of electrical appliances; However, this structure is complicated and requires a gas distribution system; The environment (70% clean and dry) and maintenance (daily, regular and temporary) are very demanding.