How To Change The Positive And Negative Charge State Of Cotton Cloth

 

The existence of positive charges can be tested by experiments:

Positive charge is a kind of charge. When an object is affected by an electric field, it will have a positive charge. Therefore, the existence of positive charge can be detected by measuring the charge of the object.

To measure the charge of an object, you can use the Coulomb experiment. Coulomb experiment is a kind of charge measurement experiment. Its principle is that when an object with positive charge moves in an electric field, it will interact with an electric field with negative charge, resulting in a certain amount of potential difference.

According to the size of the potential difference, the amount of charge of the object can be measured, so as to determine the amount of positive or negative charge of the object.

To measure the amount of charge on an object, you need to use a coulometer. The coulometer is an instrument for measuring the amount of electric charge. Its working principle is similar to that of the Coulomb experiment. When an object is placed on the coulometer by a charged object, the coulometer will produce a potential difference to the charged object, thus affecting the resistance of the coulometer, so as to measure the charge of the charged object.

To detect the existence of positive charges, an electric field with positive charges can be compared with an electric field with negative charges to determine the existence of positive or negative charges.

The process of losing the negative charge of an object is called the process of electric potential energy conversion. The negative charge of an object can be converted into a positive charge in the following ways:

Neutralization: neutralize the charge between an object and another person, so that the positive charge on the object will be neutralized into a negative charge, and the electric potential energy on the object will be converted into heat energy.

Increase positive charge: increase the charge between the object and another person, so that the negative charge on the object will be increased to positive charge, and at the same time, increase the electric potential energy of positive charge on the object surface.

Attraction: separate the charge between the object and another person, and the negative charge on the object will be attracted by the other person, so the direction of the charge on the object will change, and the electric potential energy on the object will be converted into heat energy.

In practical application, the above three methods can be combined to achieve different effects.

Textiles usually have positive or negative charges, depending on the charges they are exposed to during processing and the charge characteristics of the material itself.

During the spinning process, the fiber may be positively charged due to chemical treatment, friction and other reasons. For example, cotton fiber may be positively charged, and polyester fiber may be negatively charged. Other materials, such as silk and hemp, have negative charges, which will combine with fibers during processing, thus maintaining the nature of charges.

The charge of textiles can also affect their hand feel and wearing performance. Therefore, when weaving, the textile is usually treated with charge as required to achieve specific effects, such as increasing hand feel, reducing static electricity, and increasing wearing comfort.

Most natural plant fibers are charged because they are produced by different plants. For example, cotton fibers are negatively charged, while hemp fibers are positively charged. In addition, the electronic density and charge distribution of different kinds of natural plant fibers are also very different.

The electron density and charge distribution of cotton fiber are as follows:

Cotton fiber is a kind of single celled microorganism, which contains many electrons, so cotton fiber also has a certain electron density. In the process of cotton fiber production, different varieties of cotton fibers may be subjected to different treatments and genetic modifications, which will affect the electronic density and charge distribution of cotton fibers.

For the electron density and charge distribution of cotton fiber, different researchers may propose different statistical methods. For example, some researchers may use the number of electrons to calculate the electron density of cotton fiber, while others may use the charge mass ratio (charge density) of electrons to calculate the electron density of cotton fiber. As for the distribution of electron density and charge distribution of cotton fiber, specific analysis is required.

The negative charge of natural fibers is usually determined by their molecular structure and cannot be changed manually. However, negative charges in natural fibers can be transferred to positive charges by the following methods:

Washing: Washing can remove impurities in natural fiber samples, such as bacteria and other chemicals. During washing, these impurities may lead to the loss of electrons on the fiber surface, thus forming negative charges. Therefore, when washing, you can use mild detergent and high temperature to remove some impurities, so that the fiber surface becomes cleaner, thus losing part of the negative charge.

Drying: After washing, natural fiber samples can be dried in a dryer. Drying can remove water, so that the water in the sample is discharged, so that the fiber surface becomes cleaner, thus losing part of the negative charge.

It should be noted that these methods may change the quality and performance of natural fiber samples, so careful operation is required. At the same time, the effects of these methods may be different for different types of natural fibers.

Before dyeing cotton cloth, pretreatment is usually carried out to change the positive and negative charge state of cotton cloth. The positive and negative charge states of cotton cloth can be detected by electrophoresis. In the process of electrophoresis, the cotton cloth is added to the salt solution, and under the action of an electric field, the electrolyte in the cotton cloth will gather on the positive or negative electrode.

If the positive and negative charge states of cotton cloth need to be changed to a different state, pretreatment can be carried out to achieve the purpose. This pretreatment usually includes soaking the cotton cloth in the electrolyte solution, or concentrating or diluting the electrolyte solution in the cotton cloth by other methods. In this way, the positive and negative charge state of cotton cloth will change, so as to achieve the purpose of dyeing.

The advantages and disadvantages of fiber with positive charge are as follows:

advantage:

Electric field balance: the positive charge of the fiber belt can balance the electric field, prevent the uneven distribution of charges, thus reducing the risk of electrostatic discharge and ensuring the safety of electronic equipment.

Filtering: The positive charge filter can effectively remove the electric field perpendicular to the fiber, inhibit the growth of bacteria, viruses and other microorganisms, and improve the service life of the fiber belt.

Electrical performance improvement: positive charge can improve the performance of the ribbon, such as increasing the stability of the ribbon, improving the filtering effect of the ribbon, and increasing the conductivity of the ribbon.

Disadvantages:

Increase the weight of the tape: positive charges will increase the weight of the tape, limiting the use range of the fiber tape.

Increase the humidity of the tape: The positively charged fiber tape is easy to lose its charge in the high humidity environment, and needs to be recharged, increasing the use and processing costs of the tape.

Increase the humidity of the tape: The positively charged fiber tape is easy to lose its charge in the high humidity environment, and needs to be recharged, increasing the use and processing costs of the tape.

Therefore, the selection of positive charge of fiber belt needs to be balanced according to the requirements of specific applications.