Discussion on antistatic of textile fabrics

Every year in winter, the cotton-padded clothes we wear, sweaters, and even down jackets are often very static. We know that ordinary chemical fiber fabrics have large static electricity, and cotton fabrics are not easy to take care of, neither warm nor wrinkly, so how should we choose fabrics? Well, there are ways.

Although chemical fiber fabrics have static electricity, some have positive (+) charge and some have negative (-) charge, so as long as we choose the right fabric, we can still neutralize the overall charge and improve the overall comfort of our clothing.

Fabrics with negative (-) charge: -- mainly polyester, acrylic imitation wool, cashmere and so on.

Fabrics with positive (+) charge: -- mainly with (NH) base fabrics, such as nylon nylon, spandex, mulberry silk, soybean milk silk, etc., down and so on.

So if we choose polyester clothing fabric (-), then the material is best to choose nylon (+); Down jacket because the middle is down (+) layer, so the fabric can be polyester, but the inside material is best also nylon, because the fabric accounts for more, so that the overall clothing to achieve a relative balance of charge.

In addition, the charge of the fabric is also related to its hygroscopic property, nylon (nylon is nylon) hygroscopic property is better than polyester, so, relatively speaking, nylon static electricity is better. The cotton basically has no static electricity, because its hygroscopic property is the best.

The last thing to say is that polyester and nylon interwoven fabrics, cotton polyester/cotton brocade interwoven elastic fabrics, due to the neutralization effect of (+) positive (-) negative charge, the overall electrical property is basically neutralized, and the moisture absorption is also better, so basically without static electricity, but such fabrics are difficult to dye, so the price is high, all belong to a class of high-grade fabrics, in addition, There is also a kind of fabric called microfiber fabric (single wiseness <1D), due to the capillary effect, moisture absorption and perspiration performance is better, and anti-static property is also some.

Finally, for high-F-number yarns (microfibers), in the fiber dense area inside the yarn, due to the narrow spacing between the fibers, the water molecules are in a network of narrow channels like a maze, the probability of collision friction is greatly enhanced, and the collision friction with the fiber itself is also increased, so the Brownian motion of water molecules (H2O) inside the yarn is greatly weakened. A large amount of water molecules will accumulate (and, theoretically, at certain temperature and humidity conditions, if the number of fibers in the yarn is sufficient, then in the center of the yarn, a similar liquid water will be produced, that is, the center of the yarn fiber will become wet, thereby increasing the electrical conductivity). This is the theoretical basis for high F-number fiber and twisted fiber to have a certain antistatic property, more accurate parameter values please refer to the relevant experimental data.

To extend this further, here I would like to say another thing (excluding the effect of the water table, under certain conditions of air humidity) : our subsoil (subsoil of clay) is wet, and it is a similar principle; The sand in the desert, which is wide apart from each other, is very easy for water molecules to escape, so it is dry.