The biggest advantage of spandex fabric

The biggest advantage of spandex fabric is good elasticity, which can be stretched 5-8 times, without aging, spandex can not be woven alone, generally woven together with other raw materials, the proportion of spandex is about 3-10% The proportion reached 20%. Spandex fiber is a synthetic fiber with high elongation at break (above 400%), low modulus and high elastic recovery. The Chinese brand name of multi-block polyurethane fiber. Also called elastic fiber. Spandex has high elongation (500% to 700%), low elastic modulus (200% elongation, 0.04 to 0.12 g / denier) and high elastic recovery rate (200% elongation, 95% to 99%). In addition to its greater strength, other physical and mechanical properties are very similar to natural latex filaments. It is more resistant to chemical degradation than latex yarn, has moderate thermal stability, and has a softening temperature above 200 ° C. Most dyes and finishing agents for synthetic and natural fibers are also suitable for dyeing and finishing spandex. Spandex is resistant to sweat, sea water and various dry cleaning agents and most sunscreens. Long-term exposure to sunlight or chlorine bleach will also fade, but the degree of fade varies with the type of spandex and varies greatly.