Txoj kev Synthesis ntawm Polyester Fibers

Polyester yog ib lo lus siv rau polyester fiber, uas yog hluavtaws fiber. Cov txheej txheem raug muab faib ua ob ntu: polyester yaj synthesis thiab yaj spinning.
Synthetic polyester: Cov khoom siv raw los ua polyester yog polyethylene terephthalate thiab ethylene glycol, uas feem ntau yog los ntawm roj av, thee, thiab natural gas. Ua ntej, cov tshuaj lom neeg xws li toluene, xylene, thiab ethylene yog tau los ntawm cov roj av, thiab tom qab ntawd cov tshuaj tiv thaiv yog nqa tawm kom tau terephthalic acid los yog dimethyl terephthalate thiab ethylene glycol. Yav dhau los, vim muaj kev nyuaj hauv kev ua kom zoo terephthalic acid, tib neeg siv dimethyl terephthalate thiab ethylene glycol los tsim polyester. Tab sis txij li kev ua tiav kev ua tiav ntawm terephthalic acid hauv xyoo 1965, cov txheej txheem ntawm polyester tau txo qis thiab cov nqi tau txo. Feem ntau siv polyester yog tsim siv terephthalic acid thiab ethylene glycol ua raw khoom. Cov ntaub ntawv nyoos no tsim polyester yaj los ntawm cov tshuaj tiv thaiv condensation.
Spinning: Polyester yaj tuaj yeem siv los npaj polyester fibers. Ua ntej, cov polyester yaj yog qhuav thiab yaj kom txo cov dej noo. Tom qab ntawd, cov polyester qhuav qhuav yog rhuab mus rau qhov kub thiab txias, thiab los ntawm cov txheej txheem spinning, cov polyester melted yog extruded los ua cov fibers zoo. Cov filaments no tuaj yeem muab faib ua polyester filament thiab polyester luv fibers raws li txoj kev ua.
Polyester filament: Polyester filament feem ntau tau los ntawm kev ncab, twisting, thiab lwm yam kev kho mob. Stretch yarns (DT) thiab stretch textured yarns (DTY) yog siv rau weaving fabrics. Cov xov paj tag nrho (FDY) tuaj yeem siv ncaj qha rau kev xaws ntaub. Tsis tas li ntawd, muaj ib hom polyester fiber hu ua "Cordell", uas yog me ntsis sib zog dua polyester, nrog me ntsis qis zog thiab elongation, thiab yog haum rau blending nrog paj rwb, ntaub plaub, thiab lwm yam ntaub.
Polyester yog cov khoom siv feem ntau siv nrog cov khoom zoo heev, dav siv hauv textiles thiab lwm yam. Cov saum toj no yog cov txheej txheem synthesis thiab ntau hom kev npaj rau polyester.