Spandex is the abbreviation of polyurethane fiber, which is an elastic fiber. Spandex is generally composed of multiple filaments, generally 10D/ root, and now there are 15D/ root, even 20D/ root. The less the theoretical number, the better the uniformity.

"Spandex" is highly elastic and can be stretched by 6-7 times, but it can recover quickly with the disappearance of tension. Its molecular structure is chain-like, soft and malleable polyurethane, and its characteristics are enhanced by connecting with hard segments.

Elastic fibers are divided into two categories: one is polyester chain; One is polyether chain. Polyester elastic fiber has strong oxidation resistance and oil resistance; Polyether elastic fiber has good mildew resistance and detergent resistance.

Extended data

Characteristics of spandex

superiority

1, high ductility, good shape retention and no wrinkling.

2, acid and alkali resistance, wear resistance and aging resistance.

3. Good dyeability, not suitable for fading.

disadvantaged

1, poor hygroscopicity.

2, spandex is usually not used alone, but blended with other fabrics.

3. Poor heat resistance.

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