Taw qhia rau Viscose Fiber

Viscose fiber, feem ntau sau tias "Viscose" lossis "Rayon" ntawm cov khaub ncaws cim npe, yog tus txiv neej tshwj xeeb thiab siv dav heev - ua cellulosic fiber. Qhov tseem ceeb, nws yog tsim los ntawm kev rho tawm cov cellulose ntshiab (tsuas yog -cellulose) los ntawm cov nroj tsuag ntuj (xws li ntoo, xyoob, lossis paj rwb linters). Cov cellulose no tau dhau los ua cov txheej txheem tshuaj lom neeg nyuaj (siv sodium hydroxide thiab carbon disulfide los tsim cov kua ntsev sodium cellulose xanthate, yog li lub npe "viscose"). Cov tshuaj yog ces extruded los ntawm spinnerets mus rau hauv ib tug acid da dej, qhov twg nws coagulates thiab regenerates mus rau hauv lub nruam filaments. Yog li ntawd, tsis zoo li polyester los yog nylon, uas yog tag nrho muab los ntawm petrochemicals, viscose yog ib tug "regenerated" natural cellulose fiber. Qhov no muab nws ntau yam khoom zoo ib yam li cov fibers ntuj tab sis kuj tuaj nrog cov kev txwv tsis pub muaj.

Qhov zoo ntawm Viscose Fiber:

Cov neeg nyiam cov khaub ncaws viscose feem ntau rau nws qhov kev nplij siab tshwj xeeb. Qhov no stems los ntawm cellulose molecular qauv nplua nuj nyob rau hauv hydrophilic pawg (-OH), muab nws zoo heev noo noo nqus (tus qauv noo noo regain ib ncig ntawm 12-15%, piv rau los yog me ntsis zoo dua paj rwb). Nws sai sai absorbs thiab wicks tawm hws, ua ke nrog zoo breathability. Qhov no zoo tswj cov microclimate ntawm daim tawv nqaij ntawm qhov chaw, txo qhov txhaws thiab muab qhov qhuav, xis nyob. Nws kuj txo qis hluav taws xob zoo li qub, ua rau nws yog qhov kev xaiv zoo tshaj plaws rau lub caij ntuj sov khaub ncaws thiab ris tsho hauv qab. Qhov thib ob, qhov saum npoo ntawm viscose fiber yog du, ua rau muaj qhov muag heev, du, thiab silky xav-feem ntau dhau ntawm cov paj rwb thiab mus txog ntawm cov lo lo ntxhuav. Visually, los ntawm cov txheej txheem tswj (xws li ntxiv delustering tus neeg saib xyuas titanium dioxide los yog kho cov kev mob spinning), nws tuaj yeem tso saib ntau yam lusters los ntawm mos matte rau ci ntsa iab. Nws qhov ntom ntom ntom (kwv yees . 1.5 g / cm³) thiab qhov tawv tawv tsis tshua muaj muab cov ntaub ntaub zoo heev, ua rau cov ris tsho zoo li hnav khaub ncaws thiab ntaub ntaub dai nrog cov kua dej, cov kab ntuj.

Qhov tsis zoo ntawm Viscose Fiber:

Txawm li cas los xij, vim nws cov qauv molecular thiab cov txheej txheem tsim dua tshiab, viscose fiber muaj qhov ua tau zoo tsis muaj zog. Qhov teeb meem tseem ceeb yog qhov txo qis hauv cov khoom siv thaum ntub dej. Thaum cov fiber absorbs dej thiab swells, dej molecules nkag mus rau amorphous cheeb tsam ntawm cellulose, cuam tshuam cov hydrogen bond network uas muab lub zog. Qhov no ua rau nws lub zog ntub dej feem ntau tsuas yog 40% -60% ntawm nws lub zog qhuav. Qhov no ua rau cov ris tsho viscose tshwj xeeb tsis yooj yim thaum ntxuav -kev ntxuav tes yog pom zoo, tsis txhob siv lub tshuab ntxhua khaub ncaws, thiab txwv tsis pub siv lub tshuab ntxhua khaub ncaws los yog wringing, txwv tsis pub lawv yuav ua rau deformation thiab puas. Tom qab ntxuav, lawv yuav tsum tau muab tso ncaj nraim kom qhuav. Kev ntxuav tsis tu ncua kuj ua rau kom hnav. Lwm qhov teeb meem tseem ceeb yog qhov tsis zoo elasticity thiab qhov ntev stability. Cellulose molecular chains yog nruj thiab tsis muaj elastic rov qab, ua rau cov ntaub uas wrinkle yooj yim thiab tuav creases tsis tu ncua, yuav tsum tau ironing nquag. Tsis tas li ntawd, qhov shrinkage tseem ceeb tshwm sim vim qhov nqus dej / o thiab kev ua haujlwm txhua yam; Cov khaub ncaws uas tsis muaj kev kho mob ua ntej shrinking yog nquag deformation. Tsis tas li ntawd, nws qhov kev puas tsuaj tsis zoo nyob deb ntawm cov hluavtaws fibers xws li polyester lossis nylon; cov cheeb tsam yuav rov sib txhuam yooj yim ntsiav tshuaj lossis hnav los ntawm.

Kev txiav txim siab ntau lawm:

Txawm hais tias cov ntaub ntawv raw los ntawm cov nroj tsuag txuas ntxiv mus thiab cov fiber ntau nws tus kheej yog biodegradable, cov txheej txheem viscose ib txwm muaj cov tshuaj muaj txiaj ntsig (NaOH, CS₂, H₂SO₄). Cov pa roj carbon disulfide (CS₂), tshwj xeeb, yog tshuaj lom thiab ua rau muaj kev pheej hmoo ib puag ncig. Nws txoj kev rov qab los tsis tiav lossis kev xau yog qhov kev sib tw loj ntawm ib puag ncig. Kev lag luam niaj hnub no tab tom hais txog qhov no los ntawm kev kaw - lub voj voog thiab txhawb kev ua haujlwm zoo ib puag ncig ntau dua - cov txheej txheem xws li Lyocell (uas siv cov khoom tsis yog- cov kuab tshuaj lom NMMO).