Spandex yog ib qho hluavtaws fiber ntau nrog kev sib tsoo siab (ntau tshaj 400 feem pua), cov qauv qis thiab siab elastic rov qab. Suav lag luam npe ntawm multi thaiv polyurethane fiber ntau. Kuj tseem hu ua elastic fiber.
Spandex muaj elongation siab (500% 700%), tsis tshua muaj elastic modulus (200 feem pua elongation, 0.04 0.12 g / Dan) thiab siab elastic rov qab (200 feem pua elongation, 95 feem pua 99 feem pua). Ntxiv nrog rau lub zog siab, lwm yam khoom siv lub cev thiab cov khoom siv kho mob zoo ib yam li ntuj latex silk. Nws yog ntau resistant rau tshuaj degradation tshaj latex hlau, muaj nruab nrab thermal stability, thiab softening kub yog siab tshaj 200 degree. Feem ntau cov dyes thiab xov tooj siv rau hluavtaws thiab ntuj fibers kuj haum rau dyeing thiab xov ntawm spandex. Spandex yog hws resistant, seawater resistant, thiab resistant mus rau ntau yam qhuav tu neeg ua hauj lwm thiab feem ntau tshuaj pleev thaiv hnub. Lub sij hawm ntev raug rau lub hnub ci los yog cov tshuaj chlorine bleach kuj yuav ploj mus, tab sis qhov fading degree txawv heev nrog hom spandex.
