Moisture absorbing and sweat wicking fiber

Moisture absorption and perspiration fiber is to make use of the capillary phenomenon produced by the micro grooves on the surface of the fiber to make the sweat quickly migrate to the surface of the fabric and disperse through wicking, diffusion and transmission, so as to achieve the purpose of moisture conduction and quick drying.

Chinese name moisture absorption and perspiration fiber function diffusion and transmission specification fiber: 1.4d * 38mm nature fiber

catalogue

1 development background

2 mechanism

3. Water absorption and drainage performance

▪   Water absorption of fiber

▪   Dryness of fiber

4 introduction of production method

5 specifications

6 fabric characteristics

What is moisture absorption and perspiration

Develop background edit voice

In recent years, people have higher and higher requirements on the comfort, health, safety and environmental protection of clothing fabrics. With the increase of people's time in outdoor activities, the trend of mutual penetration and integration of leisure clothing and sportswear is increasingly favored by the majority of consumers. The fabrics of this kind of clothing not only require good comfort, but also require that when people enjoy activities, they should have good comfort, Once there is sweating, clothing will not stick to the skin and produce cold and wet feeling.

Therefore, the new requirements of moisture absorption and perspiration function are put forward.

As we all know: natural fiber take cotton as an example, its moisture absorption performance is good, and it is comfortable to wear, but when people's sweating is slightly large, the cotton fiber will expand due to moisture absorption, its luck will decline and stick on the skin, at the same time, the water divergence speed is also slow, thus causing a cold and wet feeling to the human body; Polyester synthetic fiber, for example, has low water absorption and poor moisture permeability. It is easy to cause entanglement when wearing because of its electrostatic accumulation, especially when in activities.

With the development of society and science and technology, consumers have higher and higher requirements for clothing function. Synthetic fiber has played an important role for a long time. Polyester is the main component. Since the industrialization of polyester, polyester modification research has never been interrupted. Of course, improving the water absorption and moisture permeability of polyester is the most concerned research direction of polyester production and scientific research departments in various countries.

In recent years, in the domestic textile market, the demand for moisture absorption and perspiration textiles is gradually rising, which has attracted the attention of the industry.

Mechanism editing voice

What is moisture absorption and perspiration? Generally speaking, it is difficult for both natural fiber and synthetic fiber to have these two characteristics, but moisture absorption and perspiration processing technology can achieve this. Therefore, the technology of moisture absorption and perspiration gives a new life to the polyester fiber which is not absorbent at all.

Water absorption and drainage performance

The moisture absorption and perspiration performance of fiber depends on its chemical composition and physical structure. The vapor water evaporated from the skin surface is first absorbed by the fiber material (i.e. hygroscopic), and then released through the surface of the material; The liquid water on the skin surface is absorbed, diffused and evaporated (i.e. dehumidified) by the capillary effect produced by the pores (pores, micropores, grooves) in the fiber and the gaps between the fibers. The former is mainly related to the chemical composition of macromolecules, while the latter is related to the physical structure of fibers.

Moisture absorption and perspiration fiber generally has a high specific surface area, there are many pores or grooves on the surface, and its cross-section is generally special shaped. By using capillary effect, the fiber can quickly absorb moisture and sweat on the skin surface, and transmit it to the outer hair band through diffusion.

Water absorption of fiber

Moisture absorption and perspiration fibers have the characteristics of water absorption. There are many micropores or gaps between the fibers and grooves on the surface of the fibers, which make it easy for water to enter the fibers. At the same time, there are many tubular grooves or capillaries along the fiber axis to provide channels for water migration, Therefore, the fiber has good water absorption. After water absorption, there is no swelling phenomenon like cotton due to water absorption.

Dryness of fiber

The moisture between the polyester fibers is mainly held by a large number of microporous capillaries or mechanically kept in the capillaries between the fibers. At normal ambient temperature, water is easily transported to the fiber surface and volatilized.

Brief introduction of production method

Polyester is a kind of fiber with high crystallinity. There is no hydrophilic group in the molecular main chain, so it is hydrophobic and poor in moisture absorption and perspiration. Therefore, the clothing has poor moisture permeability and a sense of heat. There are also various troubles caused by easy accumulation of static electricity. Throughout the development of moisture absorption and perspiration polyester. Mainly through physical and chemical modification, or a combination of the two methods.

Special shaped fiber

Changing the shape of spinneret hole is a simple, direct and effective way to improve the moisture conductivity of fiber. There are many grooves in the longitudinal direction of profiled fiber. Through the wicking effect of these grooves, the fibers can absorb moisture and sweat. "Coolmax" polyester produced by DuPont company of America. Its cross section is a unique flat cross, and the fiber surface is longitudinally divided into four grooves. Secondly, its area is 20% larger than that of conventional circular cross section, so its perspiration performance is higher than that of conventional polyester.

Blending or composite spinning of dilute poly (styrene)

The polymer containing hydrophilic group is blended with polyester chip to produce moisture absorption and perspiration fiber with specially designed profiled spinneret.

Polyester chip and hydrophilic polymer are blended into a special-shaped moisture absorption and perspiration fiber. Hydrophilic polymer is usually used as the core layer of composite fiber, while polyester is used as the outer layer. Hydrophilic polymers are polyether modified polyester and hydrophilic modified polyamide. The two components play the role of moisture absorption and moisture conduction respectively. The composite fiber has the role of moisture absorption and moisture conduction to achieve the effect of moisture absorption and perspiration.

graft copolymerization

The hydrophilic gene was introduced into the macromolecular structure by graft copolymerization to increase the moisture absorption and perspiration function of the fiber. Usually, carboxyl, amido, hydroxyl and amino groups are introduced to increase the affinity for water. At the same time of raw material modification, proper spinning process should be adopted to make the fiber have porous structure and larger specific surface area.

Ekslive, a respirable polyester fabric developed by Toyo, Japan, obtains moisture absorption and perspiration function by blending polyacrylate powder (called mysterious powder) with polyester. It can remove heat through moisture absorption and improve the saturated water absorption of polyester fabric. It is said that the sales volume in 2002 was 2 billion yen, about 4 million meters. 60% of the products are woven fabrics and 35% are knitted fabrics. Komatsu Serien company grafts silk compound onto polyester fiber to produce water absorbent and sweat wicking polyester.

From the current industrialization of moisture absorption and perspiration polyester, it is mainly to use physical methods to spin "+", "Y" and "t" three kinds of special-shaped fibers, and there are a number of different micro grooves on its surface, so as to strengthen the function of moisture conduction and perspiration.

Specification editing voice

Moisture absorption and perspiration fibers mainly use the profiled fiber section (Y-shaped, cross shaped, W-shaped, bone shaped, etc.) to form grooves on the surface of the fiber. With the help of the core moisture absorption and moisture conduction structure of the grooves, moisture and sweat on the surface of the skin can be quickly absorbed and instantly discharged from the body. Then the sweat can be diffused and quickly evaporated by the fibers on the cloth surface, so as to achieve the purpose of moisture absorption and perspiration and temperature regulation, Keep skin dry and cool.

At present, the most widely used and the best effect are moisture absorption and perspiration fibers produced by cross-section profiled. For example: Coolmax fiber from DuPont, Topcool fiber from Taiwan far east textile, Coolplus Fiber from Taiwan ZTE textile, etc.

The common specifications of moisture absorption and perspiration are: fiber: 1.4d * 38mm, filament type: 50D / 72F, 100D / 144f, 150D / 144f, 75D / 72F, 75D / 48F, 75D / 36F, 100D / 72F, 100D / 48F, 150D / 96F, 150D / 48F, etc; Yarn: 16S / 1, 20s / 1, 30s / 1, 32S, 40s, 50s, 60s, etc. In addition, the blended yarn of moisture absorption and perspiration fiber and cotton, hemp, Tencel and other raw materials also emerge in endlessly.

Editing voice of fabric characteristics

The fabric made of moisture absorption and perspiration fiber is widely used in sportswear, outdoor, tourism and leisure clothing, underwear and other fields because of its light weight, moisture conductivity, quick drying, cool, comfortable, easy to clean, no ironing and other excellent characteristics. In the market, from weaving to knitting, from fiber to yarn, from fabric to clothing, home textiles, moisture absorption and sweat wicking fiber products can be seen everywhere, which has formed a complete moisture absorption and sweat wicking fiber industry chain.

What is moisture absorption and perspiration editing voice

Generally speaking, it is difficult for both natural fiber and synthetic fiber to have these two characteristics, but moisture absorption and perspiration processing technology can achieve this. Therefore, the technology of moisture absorption and perspiration gives a new life to the polyester fiber which is not absorbent at all.