The sweater is very warm when you wear it, but it crackles when you take it off. What is the reason for this? How should the static electricity of sweater be removed? What's the reason It is definitely not only when you rub with a sweater that static electricity will be generated. As long as two objects rub against each other, static electricity will be generated, but the size of static electricity is different. A more important aspect is that the conductivity of an object determines the accumulation of static electricity generated by friction: for materials with good conductivity, the static charge is transmitted and dissipated in time; Materials with poor conductivity cannot escape in time after static electricity is generated, so they accumulate and make you feel it. How to remove static electricity from sweaters Method 1: when taking off the sweater for cleaning, add some softener, or apply it directly on the sweater with warm water and softener; Method 2: you can also add some glycerin into the water, and then soak the sweater, which can reduce the static electricity caused by friction; Method 3: or you can wipe the sweater with a clean wet towel to easily remove the static electricity of the sweater. How many volts is static electricity in sweater It can generate 1500 ~ 35000 volts of static electricity. Common human electrification processes are as follows: (1) People stand up from the chair or wipe the wall (the initial charge separation occurs on the outer surface of clothes or other related objects, and then the human body is charged by induction. (2) People walk on insulating floors such as carpets made of high resistivity materials (the initial charge separation occurs between shoes and floors, and then, for conductive shoes, the human body is charged by charge transfer; for insulating shoes, the human body is charged by induction). (3) Static electricity when taking off your coat. This is the contact between the outer clothing and the inner clothing, and the human body is charged through charge transfer or induction. (4) A liquid or powder is poured out of a container held by a person (the liquid or powder takes away a polar charge and leaves an equal amount of opposite charge on the human body. (5) Contact with live materials. For example, when sampling highly charged powder. When there is a continuous electrification process, the maximum potential of human body is limited below about 50kV due to charge leakage and discharge. Is the sweater of poor quality If the static electricity of newly bought clothes is particularly strong, it is because the cloth is not good. For example, chemical fiber fabrics have strong static electricity, especially in winter. Reasons for static electricity in clothes: if you wear cotton clothes and the weather is dry, when people are active, clothes and skin will rub against each other, and the atoms on the clothes will lose electrons. Therefore, the internal and external charges of the atomic nucleus are unbalanced, which makes it electric. However, because the humidity (concentration of water vapor) around is higher than that in winter, the generated charge will be taken away by water vapor in time or contact with the earth through skin, which will be led to the earth.