| The pros and cons of static electricity |
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admin |
添加时间： |
2012/9/14 |
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| We know that the friction can electrification friction after the positive and negative charge is bound in the live body, it can not, as the electrical charge in the wire as the directional movement. Known as electrostatic charge, referred to as static electricity.
A lot of static electricity hazards, it is a hazard from the interaction of the charged body. Make aircraft airframe friction with air, water, gas, dust and other particles charged, if measures are not taken, it will seriously interfere with the normal working of the aircraft radio equipment, the aircraft becomes deaf and blind; printing press in sheet between static, make sheet bonded together, it is difficult to separate trouble printing; pharmaceutical factory where, due to the electrostatic attraction of dust, the purity of the drugs reach the standard will; put TV fluorescent screen surface electrostatic easy to absorb dust and oil film to form a layer of dust, reduces image clarity and brightness; Even the common, and not readily blended clothes and brushed the dust, but also electrostatic pound ghost. Static hazards, possible explosion due to static spark ignited some combustible substances. Dark night, we de nylon, wool clothes will be issued when the sparks and the sound of "Baba", which is basically harmless to the human body. Static spark caused the explosion of the anesthetic on the operating table, hurt doctors and patients; would cause gas explosions in coal mines, workers killed or injured, the mine scrapped. Who can assert that the December 29, 1997, the Norwegian tanker "Istria" sudden explosion than electrostatic break the curse? Who can certainly shocked the nation in 1990, Harbin flax workshop explosions are not caused by static spark?
In short, the electrostatic hazards due to static electricity and static sparks, the most serious of electrostatic hazards caused by electrostatic discharge of the fire and explosion of the combustible material. People often say that, in prevention unburned prevent static measures are generally reduce the flow rate and the flow and transformation of the electrification strong technology links, using less equipment and materials from the electric. The easiest and most reliable way is to wire the equipment ground, so you can charge into the ground to avoid the accumulation of static electricity. Attentive passengers will probably find, the discharge brush on both sides of the aircraft's wing tip and the tail of the aircraft are equipped with landing aircraft, in order to prevent passenger plane mostly use a special ground tire or ground wire electric shock, aircraft landing gear, electrostatic charge to release let go of aircraft in the air. We also often see the tanker tail drag the ground wire of a chain, this is the car. Appropriately increase the humidity of the working environment, so that the charge to be discharged at any time can also be effectively eliminate static electricity. Wet weather is not easy to do the static test, is the truth. The researchers study antistatic agent, can eliminate the insulator internal electrostatic.
However, how everything has two sides. For static, just figured out its temper, weaknesses, I can make it to the service of humanity. For example, electrostatic printing, electrostatic spraying, electrostatic flocking, electrostatic precipitators and electrostatic separation technology has been widely used in industrial production and life. Electrostatic also began desalination, spraying pesticides, artificial rain, freezing many play an active role, even in the static electricity feeder electrostatic device is also installed on the spacecraft. |
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