Cov neeg ua haujlwm uas hais txog cellulose muaj ntau yam thiab ntau yam polymers nrog cov ntawv thov hauv ntau cov neeg muaj ntau yam lag luam, suav nrog kev tsim cov honeycomb ceramics thiab lwm yam khoom.
1. Taw qhia rau Cellulose Ethere:
Cellulose Cov neeg muaj kev hais ua ke yog derivatives ntawm cellulose, lub ntuj polymer pom nyob rau hauv tsob nroj cell phab ntsa. Nws tau los ntawm kev hloov kho tshuaj lom neeg ntawm cellulose, ua rau dej-soluble lossis dej-dispersible polymers. Cov peev txheej ntawm cov cellulose muaj xws li ntoo pulp, paj rwb, thiab lwm yam khoom cog ntoo.
2. Hom ntawm cov cellulose muaj cov neeg muaj cai:
Muaj ntau hom kev ua kom muaj kev nyab xeeb, txhua tus nrog cov khoom siv tshwj xeeb rau cov ntawv thov tshwj xeeb. Qee hom hom tshuaj suav nrog methylcellulose (MC), ethylcellulose (ec), hydroxypropulose (HPC), thiab Carboxymethylcelleculose (CMC). Qhov kev xaiv ntawm cellulose ether nyob ntawm cov khoom xav tau ntawm cov khoom kawg.
3. Kev tsim qauv:
Kev tsim cov kws hais kom lwm tus muaj cov neeg hais tias muaj ntau kauj ruam, suav nrog kev siv tshuaj cellulose, kev hloov kho cov tshuaj, thiab ua kom huv. Cellulose yog thawj zaug muab rho tawm los ntawm cov nroj tsuag thiab tom qab ntawd tshuaj lom neeg tau siv los qhia cov pab pawg ua haujlwm xws li methyl, hydroxyethyl lossis carboxymethyl. Lub resulting cellulose ether yog ces huv kom tshem tawm impurities thiab ua tiav qhov xav tau zoo.
4. Cov khoom ntawm cellulose ether:
Cellulose Cov yam ntxwv muaj kev pab muaj ntau yam khoom, ua rau lawv haum rau ntau yam kev siv. Cov khoom no suav nrog cov dej solubility, ua yeeb yaj kiab ua yeeb yam, muaj peev xwm ua rau muaj peev xwm, thiab ruaj khov dua qhov kub thiab txias thiab kub. Cov khoom no ua rau cov neeg muaj txiaj ntsig ntawm cov cellulose muaj kev hais ua hauv ntau yam kev lag luam.
5. Daim ntawv thov ntawm cellulose ether:
Cov kws hais txog cellulose yog siv nyob rau hauv ntau qhov kev lag luam, suav nrog cov tshuaj, khoom siv, cov ntawv nyeem thiab cov lus ceramics. Nws cov ntawv thov ntau li ntawm kev siv los ua cov tshuaj lom tuab hauv cov zaub mov kom txhim kho cov khoom ntawm cov khoom tsim tsev. Nyob rau hauv daim teb ntawm ceramics, cellulose hais kom lwm tus ua si ib lub luag hauj lwm tseem ceeb hauv kev tsim cov khoom siv honeycomb ceramics.
6. Cellulose ether hauv honeycomb ceramics:
Honeycomb ceramics yog cov txheej txheem txheej txheem nrog cov hlwb tau npaj rau hauv cov qauv hexagonal lossis honeycomb. Cov lus ceramics no tau paub txog lawv qhov chaw siab, tsis muaj cua sov nthuav dav, thiab cov cua sov thiab huab cua sov hnyav thiab loj hloov kho. Cellulose muaj kev hais ua neeg raug siv nyob rau hauv kev tsim khoom ntawm honeycomb ceramics rau cov laj thawj hauv qab no:
Kev kho thiab Rheology Modifiers: Cellulose kev pab hais ua raws li cov Cinders, tuav lub ceramic hais ua ke thaum lub sij hawm moulding txheej txheem. Ib qho ntxiv, nws ua raws li rheology kho tshuab, cuam tshuam kev ntws thiab deformation ntawm ceramic slurrories.
Lub cev lub cev ntsuab tsim: Ceramic slurries muaj cov kws ua haujlwm cellulose tau siv los ua cov khoom ntsuab rau honeycomb ceramics. Lub cev ntsuab tsis muaj cov qauv sib xyaw uas zoo li qub uas zoo li qub uas qhuav ua ntej.
Kev sib sau thiab ziab: cellulose hais pab pab cov ceramic hais ua ke thaum lub txheej txheem ziab khaub ncaws. Nws tiv thaiv kev tawg thiab deformation, ua kom lub cev ntsuab khaws nws cov qauv kev ntseeg.
Burgout thiab Sintering: Nyob rau theem tom ntej ntawm honecomprer ceramic ntau lawm, lub cellulose muaj neeg raug hlawv tawm, tawm voids uas pab ua cov qauv honeycomb. Cov txheej txheem Sintering ces tau txais los ua cov khoom kawg ceramic.
7. Lwm cov ntawv thov ntawm cov kws pab cuam cellulose:
Ntxiv nrog rau honeycomb ceramics, cellulose cov neeg hais ua neeg tau siv nyob rau ntau yam ntawm lwm yam khoom thiab kev lag luam:
Kws Tshuaj Kho Mob: Siv ua phau ntawv sau thiab ua txhaum hauv cov ntsiav tshuaj tsim qauv.
Cov zaub mov kev lag luam: Cov neeg muaj kev ua kom muaj kev hais txog cellulose yog siv ua cov thickeners, stabilizers thiab emulsifiers hauv cov zaub mov.
Cov khoom siv tsim kho: nws txhim kho cov khoom ntawm cov neeg nplua nuj, cov nplaum thiab txheej.
Textiles: Cov neeg muaj kev hais ua cellulose yog siv rau hauv textile luam ntawv thiab sizing kev siv.
8. Cov kev sib tw thiab cov kev txiav txim siab:
Thaum cov neeg ua haujlwm hauv xovtooj muaj ntau yam zoo, lawv siv kuj tseem ua rau qee cov kev cov nyom. Cov teeb meem no suav nrog cov teeb meem ib puag ncig muaj feem cuam tshuam nrog cov txheej txheem ntau lawm thiab qhov yuav tsum tau txais cov ntaub ntawv raw rustainably. Kev tshawb fawb thiab kev txhim kho kev ua haujlwm tsis txuas ntxiv los daws cov kev cov nyom no thiab txhim kho cov khoom lag luam ether cov cellulose tag nrho.
9. Yav Tom Ntej Zoo thiab Tsim Kho:
Raws li thev naus laus zis nce zuj zus los ua qhov teeb meem tseem ceeb dua, lub neej tom ntej ntawm cellulose cellulose cov ntaub ntawv tsim kho, thiab kev txhim kho cov ntawv thov cov tshiab. Cov neeg muaj feem ntawm cov kws ua haujlwm hauv cellulose ua rau nws cov lus cog tseg rau ntau yam kev lag luam, thiab kev tshawb fawb txuas ntxiv tuaj yeem nthuav tawm cov peev txheej tshiab.
10. Xaus:
Cov neeg muaj kev hais ua haujlwm cellulose muaj ntau yam polymers nrog ntau cov kev siv hauv ntau yam kev lag luam. Nws siv hauv cellular ceramics hais txog nws qhov tseem ceeb hauv cov ntaub ntawv qib siab nrog cov khoom tshwj xeeb. Raws li kev lag luam txuas ntxiv mus nrhiav cov ntaub ntawv nyob ruaj khov thiab ua haujlwm cellulos yuav tsum ua lub luag haujlwm tseem ceeb hauv kev xav tau. Kev tshawb fawb txuas ntxiv thiab kev txhim kho yuav nthuav ntxiv cov kev siv ntawm cellulose khoom siv thiab txhim kho lawv cov kev lom zem tag nrho.
Lub Sijhawm Post: Jan-23-2024