Tsis tuaj yeem qhia qhov txawv ntawm viscose, modal thiab lyocell?

01 Ordinary viscose fiber ntau

Viscose fiber yog lub npe tag nrho ntawm viscose fiber. Nws yog ib qho cellulose fiber ntau tau los ntawm kev rho tawm thiab kho cov fiber ntau molecules los ntawm ntuj ntoo cellulose siv "ntoo" ua raw khoom.

Kev npaj

Cov nroj tsuag cellulose yog alkalized los tsim alkali cellulose, thiab ces reacted nrog carbon disulfide los tsim cellulose xanthate. Cov kua nplaum uas tau los ntawm kev sib cais hauv dilute lye yog hu ua viscose. Lub viscose yog ntub-spun thiab ib tug series ntawm viscose fibers yog tsim tom qab cov txheej txheem kho.

Lub inhomogeneity ntawm cov txheej txheem molding complex ntawm viscose fibers zoo tib yam yuav ua rau tus ntoo khaub lig-section ntawm cov pa viscose fibers yog lub duav-cim los yog tsis xwm yeem, nrog qhov nyob rau hauv thiab tsis tu ncua grooves nyob rau hauv lub longitudinal kev taw qhia. Viscose muaj hygroscopicity zoo heev thiab yooj yim dyeing, tab sis nws cov modulus thiab lub zog yog tsawg, tshwj xeeb tshaj yog tsis muaj zog ntub.

02 Modal fiber ntau

Modal fiber yog lub npe lag luam ntawm siab ntub dej modulus viscose fiber. Qhov sib txawv ntawm nws thiab zoo tib yam viscose fiber ntau yog tias modal fiber txhim kho qhov tsis muaj zog thiab tsis tshua muaj modulus ntawm cov viscose fiber ntau hauv lub xeev ntub. Nws kuj muaj lub zog siab thiab modulus hauv lub xeev, yog li nws feem ntau hu ua siab ntub modulus viscose fiber.

Cov khoom zoo sib xws ntawm cov tuam txhab fiber ntau kuj muaj cov npe sib txawv, xws li Lenzing ModalTM fiber ntau (Lenzing ModalTM), iav Nosic fiber (Polynosic), muaj zog fiber ntau, tsov kapok thiab Newal (Newal) thiab lwm yam khoom npe. .

Kev npaj

Kev ua tiav ntawm cov khoom ntub dej modulus tau txais los ntawm kev ua haujlwm tshwj xeeb ntawm cov txheej txheem ntau lawm. Qhov txawv ntawm cov txheej txheem viscose fiber ntau yog:

(1) Cellulose yuav tsum muaj qib siab nruab nrab ntawm polymerization (kwv yees li 450).

(2) Lub spinning dope npaj muaj ntau dua concentration.

(3) Qhov tsim nyog muaj pes tsawg leeg ntawm cov coagulation da dej yog npaj (piv txwv li, cov ntsiab lus ntawm zinc sulfate yog nce), thiab qhov kub ntawm lub coagulation da dej yog txo kom ncua lub molding ceev, uas yog zoo kom tau fibers nrog ntom qauv thiab siab crystallinity. Cov txheej txheem sab hauv thiab txheej txheej ntawm cov fibers yog li tau txais yog qhov sib xws, cov txheej txheem ntawm daim tawv nqaij-ntxhais txheej ntawm fiber ntau hla ntu tsis pom tseeb raws li cov viscose fibers zoo tib yam, cov duab ntoo khaub lig zoo li puag ncig lossis lub duav- puag ncig, thiab longitudinal nto kuj smoother. Nws muaj zog thiab modulus, thiab zoo heev noo noo nqus cov khoom kuj haum rau ris tsho hauv qab.

Cov qauv ntawm cov khaubncaws sab nraud povtseg sab hauv thiab sab nrauv ntawm cov fiber ntau yog qhov sib xws, thiab cov qauv ntawm daim tawv nqaij ntawm cov ntoo khaub lig-section tsis pom tseeb li cov viscose fibers. Zoo heev.

03 Lyocell fiber ntau

Lyocell fiber yog ib hom txiv neej ua cellulose fiber, uas yog ua los ntawm ntuj cellulose polymer. Nws tau tsim los ntawm British Courtauer Company thiab tom qab ntawd tsim los ntawm Swiss Lenzing Company. Nws lub npe lag luam yog Tencel.

Kev npaj

Lyocell siv N-methyl morpholino (NMMO) aqueous tov raws li cov kuab tshuaj, uas muaj peev xwm ncaj qha yaj cellulose pulp kom tau ib tug spinning tov, thiab ces siv ntub spinning los yog qhuav-ntub spinning txoj kev mus rau ib tug tej yam concentration. Cov tshuaj NMMO-H2O yog ib hom tshiab ntawm cellulose fiber tau los ntawm coagulating cov fiber nyob rau hauv ib coagulation da dej, thiab ces kos duab, ntxuav, oiling thiab ziab cov spun thawj fiber.

Piv nrog rau txoj kev tsim cov viscose fiber ntau, qhov zoo tshaj plaws ntawm txoj kev spinning no yog NMMO tuaj yeem yaj cov cellulose ncaj qha, cov txheej txheem ntawm spinning dope tuaj yeem ua tau yooj yim heev, thiab tus nqi rov qab ntawm NMMO tuaj yeem ncav cuag ntau dua 99 feem pua. Cov txheej txheem ntau lawm hardly pollutes ib puag ncig.

Cov qauv morphological ntawm lyocell fiber ntau txawv kiag li ntawm cov viscose zoo tib yam. Cov qauv ntoo khaub lig yog qhov sib xws thiab puag ncig, thiab tsis muaj txheej txheej ntawm daim tawv nqaij. Lub longitudinal nto yog du tsis muaj grooves. Nws muaj cov khoom siv zoo dua li cov viscose fiber ntau, kev ntxuav zoo Dimensional stability (shrinkage tus nqi tsuas yog 2 feem pua), nrog siab hygroscopicity. Zoo nkauj luster, mos kov, zoo drapability thiab zoo ntws.