What is cotton spandex fabric, and what are its characteristics?
What is cotton spandex fabric? I believe everyone is familiar with cotton fabric and Spandex Fabric. Today, I will introduce what cotton spandex fabric is. Here are some knowledge points I have compiled for you. I hope these contents can help you better understand cotton spandex fabric and its characteristics. Let's take a look together
What is cotton spandex fabric? Let's start with spandex. Spandex is primarily spandex fiber, whose scientific name is polyurethane fiber. Spandex is a synthetic fiber made up of a material that is rich in over 85% polyurethane.
There are two types of Spandex Fibers. One is an inlaid copolymer of aromatic diisocyanate and polyester segments rich in hydroxyl groups, referred to as polyester-type spandex. The other is an inlaid copolymer of aromatic diisocyanate and polyether segments rich in hydroxyl groups, referred to as polyether-type spandex. Spandex fibers, elastic polyolefin fibers, and elastic composite fibers are collectively referred to as elastic fibers.
Spandex fiber is a synthetic fiber characterized by high breaking elongation (over 400%), low modulus, and high elastic recovery rate. The most notable feature of its fabric is its excellent elasticity, which allows it to stretch 5-8 times, and it is resistant to aging. Spandex cannot be woven into fabric alone and is generally woven together with other materials, with a proportion of about 3-10%. The proportion of spandex in swimwear fabric reaches 20%. The spandex content in all-cotton spandex fabric is only 5%. Spandex also exhibits high extensibility (500%-700%), low elastic modulus (0.04-0.12 grams per denier at 200% elongation), and high elastic recovery rate (95%-99% at 200% elongation). Apart from its high strength, its other physical and mechanical properties are very similar to those of natural latex yarn. It is more resistant to chemical degradation than latex yarn and has moderate thermal stability, with a softening temperature of about 200℃. Long-term exposure to sunlight or chlorine bleach can also cause fading, but the degree of fading varies greatly depending on the type of spandex.