Cellulose acetate yog ib yam khoom siv uas siv tau ntau yam. Hauv kev lag luam luam yeeb, cellulose acetate yog cov khoom siv raw tseem ceeb rau cov lim luam yeeb vim nws qhov kev ua tau zoo heev. Nws kuj tseem siv rau hauv kev lag luam zaj duab xis thiab yas rau kev tsim cov yeeb yaj kiab thaij duab, cov thav duab tsom iav, thiab cov cuab yeej tuav. Tsis tas li ntawd, cellulose acetate ua haujlwm ua cov khoom siv tseem ceeb rau cov ntaub so ntswg, suav nrog cov ntaub so ntswg lim dej thiab cov khoom siv osmosis rov qab, ua tsaug rau nws qhov permeability zoo thiab kev xaiv. Nrog nws cov biodegradability thiab adaptability, cellulose acetate tseem ua lub luag haujlwm tseem ceeb hauv kev tsim khoom ib txwm muaj thiab cov ntawv thov ib puag ncig niaj hnub.
Cov Txheej Txheem Lim Cellulose Acetate
1. Kev Npaj Khoom Siv Raw & Acetylation
Cov txheej txheem pib nrogntoo pulpcellulose, uas yog purified kom tshem tawm lignin, hemicellulose, thiab lwm yam impurities. Cov cellulose purified ces reacted nrogacetic acid, acetic anhydride thiab ib qhocov tshuaj ua kom lub cev muaj zoglos tsim cov cellulose acetate esters. Los ntawm kev tswj hwm qib ntawm kev hloov pauv, ntau qib xws li diacetate lossis triacetate tuaj yeem tau txais.
2. Kev Ua Kom Huv Si & Kev Sib Tw Cov Tshuaj
Tom qab acetylation, cov tshuaj sib tov ua rau tsis muaj zog, thiab cov khoom seem raug tshem tawm. Cov cellulose acetate raug ntxuav, ziab, thiab yaj rau hauvacetone lossis acetone-dej sib tovlos tsim ib qho kev sib xyaw ua ke. Nyob rau theem no, cov tshuaj raug kev txom nyemkev lim dejkom tshem tawm cov khoom me me thiab cov gels uas tsis tau yaj, kom ntseeg tau tias muaj kev sib xws thiab ruaj khov.
3. Kev Tsim thiab Ua tiav Fiber
Cov kua spinning yog ua tiav los ntawm kev siv covtxoj kev sib hloov qhuav, qhov twg nws yog extruded los ntawm spinnerets thiab solidified rau hauv filaments raws li cov kuab tshuaj evaporates. Cov filaments raug sau, ncab, thiab tsim rau hauv tas mus li tow lossis xov paj. Tom qab kev kho mob xws li ncab, crimping, lossis finishing yog siv los txhim kho cov khoom fiber, ua rau lawv haum rau daim ntawv thov hauvluam yeebcov lim dej, cov ntaub, thiab cov fiber tshwj xeeb.
Daim Ntawv Lim Dej Great Wall Filtration
SCY Series lim ntawv
Daim ntawv lim dej no, nrog nws cov cellulose thiab cationic resin sib xyaw, zoo heev rau kev lim cov kua cellulose acetate. Nws muab lub zog siab, porosity ruaj khov, thiab kev tshem tawm cov pa phem. Cov polyamide epoxy resin tsawg (<1.5%) ua kom muaj kev sib raug zoo thiab kev nyab xeeb hauv kev ua cellulose acetate, pab tshem tawm cov khoom me me, gels, thiab cov khoom tsis yaj thaum tswj kev ruaj khov tshuaj lom neeg thiab ua raws li cov qauv kev nyab xeeb zaub mov thiab tshuaj.
Cov txiaj ntsig
Kev Ua Haujlwm Zoo Tshaj Plaws- Tshem tawm cov khoom me me, cov gels, thiab cov khoom tsis yaj hauv cov kua cellulose acetate.
Muaj Zog Kho Tshuab- Lub zog tawg ≥200 kPa ua kom muaj kev ruaj khov thiab kev ua haujlwm ruaj khov hauv qab kev nyuaj siab.
Sib xwsQhov porosity– Kev tswj tau qhov cua nkag tau (25–35 L/㎡·s) muab cov nqi ntws txhim khu kev qha thiab cov txiaj ntsig lim dej sib xws.
Xaus lus
Cellulose acetate yog ib yam khoom tseem ceeb uas siv rau hauv cov lim dej, cov yeeb yaj kiab, cov yas, thiab cov ntaub nyias nyias, uas muaj nqis rau nws txoj kev ua tau zoo thiab kev lwj ntawm lub cev. Thaum lub sijhawm tsim khoom, kev lim dej zoo yog qhov tseem ceeb kom ntseeg tau tias muaj kev huv thiab sib xws.
Cov phab ntsa lojSCY Serieslim dejdaim ntawvmuab cov txiaj ntsig zoo tshaj plaws nrogkev lim dej zoo, muaj zog ruaj khov, thiab porosity ruaj khovNrog cov ntsiab lus tsawg resin rau kev sib raug zoo heev, nws yog qhov kev xaiv txhim khu kev qha rau kev ua cellulose acetate hauv cov khoom noj, tshuaj, thiab tshuaj lom neeg.
