Cellulose ethers yog ntau yam thiab ntau yam polymers nrog kev siv ntau yam kev lag luam, suav nrog kev tsim cov honeycomb ceramics thiab lwm yam khoom.
1. Taw qhia rau cellulose ether:
Cellulose ethers yog derivatives ntawm cellulose, ib tug natural polymer pom nyob rau hauv cov nroj tsuag cell phab ntsa.Nws tau txais los ntawm kev hloov kho tshuaj ntawm cellulose, ua rau dej-soluble lossis dej-dispersible polymers.Feem ntau qhov chaw ntawm cellulose muaj xws li ntoo pulp, paj rwb, thiab lwm yam khoom siv cog.
2. Hom cellulose ethers:
Muaj ntau ntau hom cellulose ethers, txhua tus muaj cov khoom tshwj xeeb tsim nyog rau cov ntawv thov tshwj xeeb.Qee hom muaj xws li methylcellulose (MC), ethylcellulose (EC), hydroxyethylcellulose (HEC), hydroxypropylcellulose (HPC), thiab carboxymethylcellulose (CMC).Kev xaiv ntawm cellulose ether nyob ntawm qhov xav tau ntawm cov khoom kawg.
3. Cov txheej txheem tsim khoom:
Kev tsim cov cellulose ethers suav nrog ob peb kauj ruam, suav nrog kev rho tawm cellulose, tshuaj hloov kho, thiab kev ua kom huv.Cellulose yog thawj zaug muab rho tawm los ntawm cov nroj tsuag thiab tom qab ntawd cov tshuaj tiv thaiv yog siv los qhia cov pab pawg ua haujlwm xws li methyl, ethyl, hydroxyethyl lossis carboxymethyl.Lub resulting cellulose ether yog ces purified kom tshem tawm impurities thiab ua tiav qhov xav tau zoo.
4. Cov khoom ntawm cellulose ether:
Cellulose ethers muaj ntau yam khoom tsim nyog, ua rau lawv haum rau ntau yam kev siv.Cov khoom no muaj xws li dej solubility, muaj peev xwm ua zaj duab xis, muaj peev xwm thickening, thiab ruaj khov dua qhov kub thiab pH ntau yam.Cov khoom no ua rau muaj ntau yam ntawm cellulose ethers hauv ntau qhov kev lag luam.
5. Daim ntawv thov ntawm cellulose ether:
Cellulose ethers yog siv nyob rau hauv ntau industries, xws li tshuaj, khoom noj khoom haus, kev tsim kho, textiles thiab ceramics.Nws daim ntawv thov muaj ntau yam los ntawm kev siv los ua tus neeg sawv cev thickening hauv cov khoom noj kom txhim kho cov khoom siv hauv tsev.Hauv kev lag luam ceramics, cellulose ethers ua lub luag haujlwm tseem ceeb hauv kev tsim cov honeycomb ceramics.
6. Cellulose ether hauv honeycomb ceramics:
Honeycomb ceramics yog cov khoom siv nrog cov hlwb hauv cov qauv hexagonal lossis honeycomb qauv.Cov ceramics paub txog lawv qhov chaw siab, tsis tshua muaj thermal expansion, thiab zoo heev tshav kub thiab huab hwm coj hloov zog.Cellulose ethers yog siv rau hauv kev tsim cov honeycomb ceramics rau cov laj thawj hauv qab no:
Binders thiab Rheology Modifiers: Cellulose ethers ua raws li binders, tuav cov ceramic hais ua ke thaum lub sij hawm molding txheej txheem.Tsis tas li ntawd, nws ua raws li kev hloov kho rheology, cuam tshuam rau kev ntws thiab deformation ntawm ceramic slurries.
Ntsuab lub cev tsim: Ceramic slurries uas muaj cellulose ethers yog siv los tsim lub cev ntsuab rau honeycomb ceramics.Ntsuab lub cev yog unfired ceramic lug uas zoo li tus thiab qhuav ua ntej ua ntxiv.
Kev sib sau ua ke thiab ziab: Cellulose ethers pab cov khoom siv ceramic sib sau ua ke thaum lub sijhawm ziab.Nws tiv thaiv kev tawg thiab deformation, ua kom lub cev ntsuab khaws nws cov qauv kev ncaj ncees.
Burnout thiab sintering: Nyob rau theem tom ntej ntawm honeycomb ceramic ntau lawm, cellulose ethers hlawv tawm, tawm hauv voids uas pab tsim cov qauv honeycomb.Cov txheej txheem sintering tom qab ntawd mus rau qhov kawg ntawm cov khoom siv ceramic.
7. Lwm daim ntawv thov ntawm cellulose ethers:
Ntxiv nrog rau honeycomb ceramics, cellulose ethers yog siv rau hauv ntau yam khoom thiab kev lag luam:
Pharmaceutical: Siv los ua ib daim ntawv khi thiab disintegrant hauv cov ntsiav tshuaj formulations.
Kev lag luam zaub mov: Cellulose ethers yog siv los ua cov thickeners, stabilizers thiab emulsifiers hauv cov khoom noj.
Cov khoom siv: Nws txhim kho cov khoom ntawm mortars, adhesives thiab coatings.
Textiles: Cellulose ethers yog siv nyob rau hauv textile printing thiab sizing daim ntaub ntawv.
8. Cov kev sib tw thiab kev txiav txim siab:
Txawm hais tias cellulose ethers muaj ntau yam zoo, lawv siv kuj muaj qee qhov kev sib tw.Cov no tuaj yeem suav nrog cov teeb meem ib puag ncig uas cuam tshuam nrog cov txheej txheem tsim khoom thiab xav tau cov khoom siv raw khoom ruaj khov.Kev tshawb fawb thiab kev txhim kho kev ua haujlwm txuas ntxiv mus los daws cov teeb meem no thiab txhim kho kev ruaj ntseg ntawm cov khoom siv cellulose ether.
9. Cov tiam tom ntej thiab kev txhim kho:
Raws li kev siv thev naus laus zis thiab kev ruaj ntseg dhau los ua qhov teeb meem tseem ceeb dua, yav tom ntej ntawm cellulose ethers tuaj yeem koom nrog kev tsim kho tshiab hauv kev tsim khoom, nce kev siv cov khoom siv bio-raws li raw khoom, thiab kev txhim kho cov ntawv thov tshiab.Lub versatility ntawm cellulose ethers ua rau nws yog ib qho khoom cog lus rau ntau yam kev lag luam, thiab kev tshawb fawb tsis tu ncua yuav qhia tau qhov muaj peev xwm tshiab.
10. Xaus:
Cellulose ethers yog ntau yam polymers nrog ntau daim ntawv thov hauv ntau qhov kev lag luam.Nws siv hauv cellular ceramics qhia txog nws qhov tseem ceeb hauv kev tsim cov khoom siv siab heev nrog cov khoom tshwj xeeb.Raws li kev lag luam txuas ntxiv mus nrhiav cov khoom siv ruaj khov thiab ua haujlwm tau zoo, cellulose ethers yuav tsum ua lub luag haujlwm tseem ceeb hauv kev ua kom tau raws li cov kev xav tau no.Kev tshawb fawb tsis tu ncua thiab kev txhim kho yuav nthuav dav ntxiv rau kev siv cov khoom siv cellulose ether thiab txhim kho lawv txoj kev ruaj ntseg tag nrho.
Post lub sij hawm: Jan-23-2024