Performance of microfiber
Properties of Microfiber
Ultrafine fiber is a typical representative of new synthetic fibers that are developing towards high technology and high simulation of chemical fibers.
Due to its small diameter, ultrafine fiber has very little bending stiffness and the fiber feels particularly soft;
The specific surface area of microfiber is very large, so the coverage, fluffiness and warmth retention of microfiber fabrics are significantly improved. Fibers with large specific surface areas come into contact with dust or oil more often, and oil can penetrate through the gaps between the fiber surfaces. There are more opportunities, so it has a strong cleaning function;
Ultra-fine fibers are made into ultra-high-density fabrics, and the gaps between the fibers are between the diameter of water droplets and the diameter of water vapor droplets, so the ultra-fine fabrics are waterproof and breathable;
Microfiber has many tiny pores between microfibers, forming a capillary structure. If processed into a towel-like fabric that can be wetted by water, it has high water absorption. This towel can quickly absorb water on washed hair. Absorb it to make the hair dry quickly;
Because microfiber has the above characteristics, it can be made into imitation silk, imitation peach skin, imitation suede, imitation wool and high-density products. Microfiber has opened up an unprecedented way in the textile field, and its main application areas are: High-end fashion fabrics, high-density fabrics, high-performance wipes, imitation peach skin fabrics, human suede, high-grade lens wiping paper, gas filter materials, etc. can also be used in biomedical engineering fields such as artificial blood vessels.
Viscose fiber is made from natural wood, reed, cotton linters and other cellulose through chemical processing. It is the earliest chemical fiber variety put into industrial production.
Viscose fiber is divided into two types: filament and short fiber. Viscose filament is also called rayon or viscose yarn; viscose short fibers include cotton type (also called artificial cotton), wool type (called artificial wool) and medium-long fiber. In addition, viscose fiber can also be made into three types: glossy, semi-gloss and matt.
In order to improve the shortcomings of ordinary viscose fibers such as low wet strength, high-strength viscose fibers and high wet modulus viscose fibers have emerged. Rich and strong fibers belong to the high wet modulus category of fibers.
Since the properties of viscose fiber are close to those of natural fibers, viscose short fibers can be spun purely or blended with other chemical fibers for use in clothing fabrics. Viscose filament can be used for clothing or decorative fabrics. Strong viscose fiber is mainly used as cords, ropes, etc.
The main physical and chemical properties of viscose fiber
1. Shape: The longitudinal surface of viscose fiber is straight, grooved, zigzag-shaped in cross-section, and has a sheath-core structure. The component material of viscose fiber is cellulose, but its macromolecule polymerization degree is lower than that of cotton. Therefore, viscose fiber is more resistant to alkali but not acid, and its acid and alkali resistance are not as good as cotton.
2. Hygroscopic and dyeable viscose fiber is cellulose fiber, and its macromolecules are not tightly arranged, so it has good hygroscopicity, and its moisture regain rate reaches about 13% under normal atmospheric conditions. Viscose fiber fabric is comfortable to wear, but the fabric shrinks greatly and the size is unstable after washing. Viscose fiber has good dyeability. There are many dyes available with a full spectrum of colors, and the colors after dyeing are bright.
3. Strong elongation and elasticity The strength of viscose fiber is low, and the breaking strength is about 15-27cN/tex. The elongation of viscose fiber is larger than that of cotton fiber, and the elongation at break is about 10%-24%. In particular, the wet strength of viscose fiber is low, only about 50% of the dry strength, and the elasticity of viscose fiber is poor. Therefore, viscose fabric is not resistant to washing, the fabric is not stiff, and its anti-wrinkle performance is poor, but its texture is soft.
4. Other properties: Viscose fiber has good heat resistance and light resistance, but poor abrasion resistance. Viscose fiber also has certain moth resistance, but has poor mildew resistance and corrosion resistance. 96WtAip
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