The quality of the cotton fabric is comfortable and the surface is soft, which has received many people's favor. The same can be used for other technical fabrics and chemical fabrics for clothing. We know too little and always keep away from it. Today, take everyone to understand the characteristics and functions of chemical fiber.

Chemical fibers, especially polyesters, and polypropylene, which are water-repellent fibers, absorb very little moisture, but they can absorb and transmit moisture along the fiber's own pores and fiber-to-fiber gaps through the capillary effect. The reason why such chemical fiber fabrics can absorb moisture perspiration is that after it absorbs sweat, the diffusion rate of sweat is very fast, and it can quickly evaporate on the other side of the fabric.

Compared to polypropylene hollow fibers, cotton fibers can be used as sportswear. However, although the moisture absorption performance of the cotton fiber is very good, its moisture release rate is very slow, and the diffusion rate of the sweat is also slow, making it easier for the sweat to concentrate. Once people exercise and sweat a lot, the cotton fiber sweats, the wet feeling is serious, it will be more difficult to stick to the body.

From the fiber structure point of view, most of the fibers used for sportswear fabrics that are used for moisture absorption and perspiration are not conventional circular cross-section fibers, but are shaped cross-section fibers, such as "four-leaf" type, "five-leaf" Type, cross type, etc. Fibers with multi-leafed cross-sections can form many fine grooves on the surface of the fiber, which has a good capillary effect and enhances moisture permeability. There are times when the fiber is made into a hollow fiber and a lot of holes are processed in the hole wall of the fiber. This is the same principle. After the water gets onto these fibers, it is guided along the pores on the fibers.

The reason why this kind of fabric can have good evaporative heat dissipation is that once the fabric absorbs sweat, the sweat can quickly spread to the surrounding through the capillary effect. For example, if you drop a drop of water, the water will quickly spread on the surface of the fabric, the evaporation area will be larger, and the evaporation rate will be faster. On the contrary, cotton fabrics do not have such a fibrous structure. After absorbing moisture, they will concentrate on one piece without forming a large area of diffusion. The area will evaporate slowly. Coupled with the slow release rate of cotton itself, it will be in the process of human movement. If you sweat more, you will feel uncomfortable.

Because chemical fiber has so many benefits, so many sportswear fabrics are basically chemical fiber, polypropylene hollow fiber is one of the most commonly used one.