Elastic fiber with differentiated fiber properties and diverse properties
Elastic fiber with differentiated fiber properties and diverse properties
Polyurethane fiber, referred to as PU, has elasticity unmatched by any other fiber. Its elongation at break is greater than 400%, usually between 500% and 700%, and can be as high as 800% or more. The elastic recovery rate when deformed by 300% reaches 95 % or above, it has excellent fatigue resistance and elastic recovery rate, and its elasticity is durable and does not deform.
Spandex production technology can be divided into four types according to the spinning process: dry method, wet method, reaction method and melting method. Fibers produced by different processes have greatly different properties.
Variety classification of differentiated fibers
Differentiated fibers generally refer to chemical fibers that are innovative to conventional chemical fibers or have certain characteristics. There are many varieties of differentiated fibers, which are mainly used in clothing and decorative fabrics.
1. From the perspective of morphological structure, differentiated fibers mainly include special-shaped fibers, hollow fibers, composite fibers and fine (denier) fibers.
Special-shaped fibers are chemical fibers with special cross-sections spun through certain geometric (non-circular) spinnerets. Depending on the spinneret used, triangular, polygonal, trilobal, multi-lobed, cross-shaped, flat, Y-shaped, H-shaped, dumbbell-shaped, etc. can be obtained. Hollow fiber is a chemical fiber that runs through the fiber axis and has a tubular cavity. It can be obtained by changing the shape of the spinneret hole. The biggest characteristics of hollow fiber are low density and strong warmth retention. It is suitable for making down-type products, such as high-grade cotton, imitation down jackets, sleeping bags, etc. Composite fiber is a chemical fiber spun from two or more polymers or the same polymer with different properties through composite spinning. If composite fibers are made of two polymers, they are bicomponent fibers. In addition, there are fine (denier) fibers, which are fibers with a smaller single-filament linear density, also known as microfibers. The methods commonly used to spin fine denier fibers include: composite spinning stripping method, dissolution method, conventional melting method, super drawing method, flash evaporation method and melt blowing method. In particular, polyester fine-denier fiber occupies a dominant position among textile fibers due to its good wearing properties. High-simulation fibers have been imitated to replace natural fibers, making silk-like fabrics light, soft, smooth and smooth, and suitable for ultra-thin fabrics. After the polyester fabric is treated with alkali weight reduction and then treated with a special soft and hydrophilic finish, the appearance and feel of real silk can be obtained.
2. In terms of physical and chemical properties, differentiated fibers include antistatic fibers, high shrinkage fibers, flame retardant fibers, anti-pilling fibers, etc.
Antistatic fiber is a chemical fiber that is less likely to accumulate static charges. Antistatic fibers are mainly used in the production of dust-free sterile clothing, explosion-proof work clothes, carpets, masks and other textiles. The boiling water shrinkage rate of high shrinkage fiber is higher than that of chemical fiber of 15%. Depending on the degree of heat shrinkage, final products with different styles and properties can be obtained. For example, high-shrink polyester with a thermal shrinkage rate of 15%-25% can be used to weave various crepe, concave-convex, and jacquard fabrics; high-shrink polyester fiber with a shrinkage rate of 15%-35% can be used for bulked wool, Blankets, artificial fur, etc.; high shrinkage polyester with a shrinkage rate of 35%-50%, used for synthetic leather, artificial suede, etc. Flame-retardant fiber can also be called flame-resistant, flame-retardant or flame-proof fiber. Chemical fibers that only smolder in flames and do not produce flames themselves. When removed from the fire source, the smoldering chemical fiber is self-extinguishing. Its limiting oxygen index value is approximately above 0.3. Flame-retardant fibers are mainly used to spin clothing for children and the elderly, bedding, decorative fabrics, fire-resistant work clothes, ropes with flame-retardant requirements, tents, industrial fabrics, etc. dRYpMTDhBf
Disclaimer:
Disclaimer: Some of the texts, pictures, audios, and videos of some articles published on this site are from the Internet and do not represent the views of this site. The copyrights belong to the original authors. If you find that the information reproduced on this website infringes upon your rights, please contact us and we will change or delete it as soon as possible.
AA
