Anti-static fabric principle
First, the generation of static electricity:
The static electricity on people is mainly caused by the friction between clothes or between clothing and human body. Because the atomic structure of different materials is different, the "charge amount" is different when wearing clothes of different materials, such as clothing made of chemical fiber. It is easy to generate static electricity, and cotton clothes produce less static electricity. Moreover, the dry environment is more conducive to the transfer and accumulation of electric charge, so in winter, people will feel that the static electricity on the body is relatively large, and it is easier to generate static electricity, so increasing the humidity of the environment can effectively reduce static electricity. When the human body is active, static electricity is generated between the skin and the clothes and between the clothes and the clothes. With the increase of household appliances and the wearing of chemical fiber clothes in winter, the static electric charge generated by household appliances will be absorbed and accumulated by the human body. In addition, the indoor walls and floors are mostly insulators and the air is dry, so they are more susceptible to static electricity.
Second, the harm of static electricity:
When the static charge on the surface of the object accumulates to a certain extent, electrostatic sparks occur when two objects with different charges are separated or contacted, which is the phenomenon of electrostatic discharge. The main causes of static electricity are friction, piezoelectric effect, induced electrification, and adsorption and charging.
In industrial and agricultural production, static electricity has a great role, such as electrostatic flocking, electrostatic painting, electrostatic deworming. However, due to the existence of static electricity, there are also some dangers and accidents, such as fires and explosions caused by electrostatic discharge, which often cause huge personal and property losses.
Static electricity also poses a certain danger to the human body. According to medical experts, static electricity will bring certain harm to the human body. The static interference generated by the human body can change the normal potential difference of the human body surface, affect the normal electrophysiological process of the myocardium and the normal conduction of the electrocardiogram without interference. This kind of static electricity can make the patient aggravate the condition or induce premature beats. The long-lasting static electricity will also increase the alkalinity of the blood, causing the calcium content in the serum to decrease, and the excretion of calcium to increase, causing itching and pigmentation of the skin, affecting people. The body's physiological balance, interfere with people's emotions. Many computer workers have facial rash such as erythema and hyperpigmentation. The static electricity generated by the computer screen attracts a large amount of suspended dust, which causes the face to be stimulated. In addition, because the skin of the elderly is relatively dry compared with young people, coupled with factors such as aging of the cardiovascular system and weakened anti-interference ability, it is more susceptible to static electricity and causes cardiovascular disease.
Third, the processing methods of anti-static fabrics are usually:
The mechanism of action of the first two methods is to improve the moisture regain of the fabric, reduce the insulation, and accelerate the electrostatic leakage. Therefore, if the processing effect is not durable or inconspicuous in a dry environment or after repeated washing, it is usually applied to a fabric for general clothing. Only the third method can solve the static problem of textiles permanently and efficiently, so it is widely used in the production of anti-static overalls.
It is made of stainless steel fiber, sub-conductive fiber, anti-static synthetic fiber and polyester-cotton blended or woven into anti-static cloth. This anti-static fabric can automatically corona discharge or leak discharge, which can eliminate the charge of clothes and human body and prevent clothes. Static electricity builds up, effectively eliminating the conditions that cause electrostatic discharge.
Anti-static clothing made of anti-static fabrics, anti-static hats, anti-static socks, anti-static shoes, etc. are widely used in industrial and agricultural production and schedule life.