Moisture absorption and perspiration technology of polyester fabrics for sportswear

The moisture absorption and perspiration technology of polyester fabrics for sportswear is an important achievement of modern textile technology. It greatly improves the comfort and functionality of sportswear, allowing athletes to stay dry and comfortable during intense exercise.

1. Technical principle
Polyester fabrics have good wear resistance, wrinkle resistance and easy drying, but their natural moisture absorption is relatively poor. In order to improve this shortcoming, textile technology workers have used a series of innovative means to make polyester fabrics have excellent moisture absorption and perspiration performance.

The core of moisture absorption and perspiration technology lies in the rapid absorption, conduction and evaporation of moisture by fabrics. When the human body sweats, sweat is first quickly absorbed by the hydrophilic functional groups on the surface of the fabric, and then the capillary effect generated by the micropores, grooves and gaps between fibers inside the fabric causes moisture to be adsorbed and diffused on the surface of the fabric, and finally conducted to the outer layer of the fabric, evaporating and dissipating in the air. This process not only reduces the retention time of sweat on the skin surface, but also avoids the sticky feeling and discomfort caused by sweat accumulation.

2. Implementation methods
Fiber modification treatment
Special-section fiber: By changing the shape of the spinneret hole, the cross section of the polyester fiber is shaped (such as Y-shaped, cross-shaped, W-shaped and bone-shaped, etc.), thereby increasing the fiber surface area and specific surface area. The grooves or microporous structures formed on the surface of this special-section fiber can absorb and conduct sweat more effectively.
Hydrophilic treatment: Introducing hydrophilic functional groups such as hydroxyl (-OH) and carboxyl (-COOH) on the surface of polyester fibers to improve the fiber's ability to adsorb moisture.
Finishing processing
Moisture absorption and perspiration treatment: During the finishing process of polyester fabrics, special moisture absorption and perspiration agents (such as ZJ-X23, etc.) are added to improve the hygroscopicity and quick-drying properties of the fabrics through additives. These additives can be evenly and firmly fixed on the fiber surface to form a hydrophilic layer, which accelerates the absorption and conduction of sweat.
Microporous technology: Using physical or chemical methods to form tiny holes or gaps on the surface of polyester fabrics, increasing the air permeability and moisture permeability of the fabrics, and promoting the rapid evaporation of sweat.
Composite fiber technology
Polyester fiber is spun together with other fibers with excellent moisture absorption and perspiration wicking properties (such as bamboo fiber, nylon fiber, etc.) to form composite fibers. This composite fiber combines the advantages of multiple fibers, maintaining the wear resistance and wrinkle resistance of polyester fiber, and improving the moisture absorption and perspiration wicking properties of the fabric.
3. Application in sportswear
The moisture absorption and perspiration wicking technology of polyester fabrics for sportswear is widely used in various sportswear, such as sports T-shirts, sports pants, sports socks, etc. These sportswear are made of polyester fabrics with moisture absorption and perspiration wicking properties, which can quickly absorb the sweat generated by athletes during exercise, and conduct sweat to the outer layer through the micropores, grooves and other structures inside the fabric, keeping the skin surface dry and comfortable.

With the continuous development of technology, some high-end sports brands have also launched sportswear with intelligent functions. These garments can monitor athletes' physiological indicators (such as heart rate, body temperature, etc.) in real time by embedding intelligent components such as sensors, and automatically adjust the moisture absorption and perspiration wicking properties of the fabric according to the monitoring results, providing athletes with a more personalized wearing experience.

The moisture absorption and perspiration wicking technology of polyester fabrics for sportswear is an important achievement of modern textile technology. Through various means such as fiber modification, post-finishing processing and composite fiber technology, polyester fabrics have excellent moisture absorption and perspiration wicking performance. The application of this technology not only improves the comfort and functionality of sportswear, but also promotes the sustainable development of the sportswear industry.