Cellulose ether (CelluloseEther) yog tsim los ntawm cellulose los ntawm etherification cov tshuaj tiv thaiv ntawm ib los yog ob peb etherification agents thiab qhuav sib tsoo. Raws li cov qauv tshuaj sib txawv ntawm ether substituents, cellulose ethers tuaj yeem muab faib ua anionic, cationic thiab nonionic ethers. Ionic cellulose ethers feem ntau suav nrog carboxymethyl cellulose ether (CMC); Tsis yog-ionic cellulose ethers feem ntau suav nrog methyl cellulose ether (MC), hydroxypropyl methyl cellulose ether (HPMC) thiab hydroxyethyl cellulose ether. Chlorine ether (HC) thiab lwm yam. Tsis yog-ionic ethers tau muab faib ua dej-soluble ethers thiab roj-soluble ethers, thiab cov dej-soluble ethers uas tsis yog-ionic feem ntau yog siv rau hauv cov khoom khib nyiab. Nyob rau hauv lub xub ntiag ntawm calcium ions, ionic cellulose ether yog tsis ruaj tsis khov, yog li nws tsis tshua muaj siv nyob rau hauv qhuav-mixed mortar khoom uas siv cov cement, slaked txiv qaub, thiab lwm yam raws li cov ntaub ntawv cementing. Nonionic dej-soluble cellulose ethers yog dav siv nyob rau hauv lub tsev cov ntaub ntawv kev lag luam vim hais tias ntawm lawv suspension stability thiab dej tuav.
1. Cov khoom siv tshuaj ntawm cellulose ether
Txhua cellulose ether muaj cov qauv ntawm cellulose - anhydroglucose qauv. Nyob rau hauv tus txheej txheem ntawm kev tsim cellulose ether, cellulose fiber yog thawj rhuab nyob rau hauv ib tug alkaline tov, thiab ces kho nrog ib tug etherifying tus neeg sawv cev. Cov khoom siv tshuaj tiv thaiv fibrous yog purified thiab pulverized los ua cov hmoov sib xws nrog ib qho kev nplua nuj.
Hauv kev tsim khoom ntawm MC, tsuas yog methyl chloride yog siv los ua tus neeg sawv cev etherification; Ntxiv nrog rau methyl chloride, propylene oxide kuj tseem siv tau kom tau txais cov pab pawg hydroxypropyl hauv kev tsim HPMC. Ntau yam cellulose ethers muaj qhov sib txawv ntawm methyl thiab hydroxypropyl hloov pauv, uas cuam tshuam rau cov organic compatibility thiab thermal gelation kub ntawm cellulose ether daws.
2. Daim ntawv thov scenarios ntawm cellulose ether
Cellulose ether yog non-ionic semi-synthetic polymer, uas yog dej-soluble thiab hnyav-soluble. Nws muaj cov teebmeem sib txawv hauv kev lag luam sib txawv. Piv txwv li, hauv cov khoom siv tshuaj lom neeg, nws muaj cov teebmeem hauv qab no:
① Dej tuav tus neeg saib xyuas ②Thickener ③Leveling cuab yeej ④Film tsim khoom ⑤Binder
Hauv kev lag luam polyvinyl chloride, nws yog emulsifier thiab dispersant; nyob rau hauv kev lag luam kws tshuaj, nws yog ib tug binder thiab ib tug qeeb thiab tswj cov ntaub ntawv tso tawm lub moj khaum, thiab lwm yam. Vim hais tias cellulose muaj ib tug ntau yam ntawm composite cov teebmeem, nws daim ntawv thov ntawm lub teb kuj yog feem ntau nws kim heev. Cov hauv qab no tsom rau kev siv thiab kev ua haujlwm ntawm cellulose ether hauv ntau yam khoom siv hauv tsev.
(1) latex xim:
Hauv kev lag luam latex xim, xaiv hydroxyethyl cellulose, cov lus qhia dav dav ntawm qhov sib npaug ntawm cov viscosity yog RT30000-50000cps, uas sib haum rau cov lus qhia ntawm HBR250, thiab qhov siv ntau npaum li cas feem ntau yog 1.5‰-2‰. Lub luag haujlwm tseem ceeb ntawm hydroxyethyl hauv cov xim latex yog ua kom tuab, tiv thaiv cov gelation ntawm cov xim, pab kev tawg ntawm cov xim, kev ruaj ntseg ntawm cov latex, thiab ua kom cov viscosity ntawm cov khoom, uas ua rau kom muaj kev ua tau zoo ntawm kev tsim kho: Hydroxyethyl cellulose yog yooj yim dua los siv. Nws tuaj yeem yaj hauv dej txias thiab dej kub, thiab nws tsis cuam tshuam los ntawm tus nqi pH. Nws tuaj yeem siv tau nrog kev thaj yeeb nyab xeeb thaum tus nqi PI yog nyob nruab nrab ntawm 2 thiab 12. Cov txheej txheem ntawm kev siv yog raws li nram no: I. Directly Adding in production: Rau txoj kev no, hydroxyethyl cellulose ncua hom yuav tsum tau xaiv, thiab cov hydroxyethyl cellulose nrog lub sij hawm dissolution ntau tshaj 30 feeb yog siv. Cov kauj ruam yog raws li nram no: ① Muab tso rau hauv ib lub thawv uas muaj lub siab shear agitator. Quantitative dej ntshiab ②Pib nplawm tsis tu ncua ntawm qhov ceev, thiab tib lub sij hawm maj mam ntxiv hydroxyethyl rau hauv cov tshuaj sib npaug ③Ntxiv mus kom txog rau thaum tag nrho cov ntaub ntawv granular yog soaked ④Ntxiv lwm yam additives thiab alkaline additives, thiab lwm yam. ⑤ do kom txog thaum tag nrho cov hydroxyethyl lub hauv paus yog yaj tag. , tom qab ntawd ntxiv lwm cov khoom xyaw hauv cov mis, thiab zom kom txog thaum cov khoom tiav. Ⅱ. Nruab nrog niam cawv rau kev siv tom qab: Txoj kev no tuaj yeem xaiv cov cellulose instant, uas muaj cov nyhuv anti-mildew. Qhov kom zoo dua ntawm txoj kev no yog tias nws muaj qhov yooj yim dua thiab tuaj yeem ncaj qha ntxiv rau cov xim latex. Txoj kev npaj yog tib yam li cov kauj ruam ①-④. Ⅲ. Npaj porridge rau kev siv tom qab: Txij li cov kuab tshuaj organic yog cov kuab tshuaj tsis zoo (insoluble) rau hydroxyethyl, cov kuab tshuaj no tuaj yeem siv los npaj porridge. Feem ntau siv cov kuab tshuaj organic yog cov kua organic hauv cov xim pleev xim, xws li ethylene glycol, propylene glycol, thiab cov neeg ua yeeb yaj kiab (xws li diethylene glycol butyl acetate). Cov porridge hydroxyethyl cellulose tuaj yeem ncaj qha ntxiv rau cov xim. Txuas ntxiv mus kom txog thaum yaj tag.
(2) Hauv phab ntsa scraping putty:
Tam sim no, nyob rau hauv ntau lub nroog hauv kuv lub teb chaws, cov dej-resistant thiab txhuam-resistant ib puag ncig-phooj ywg putty tau pib muaj nuj nqis los ntawm tib neeg. Nws yog tsim los ntawm acetal cov tshuaj tiv thaiv ntawm vinyl cawv thiab formaldehyde. Yog li ntawd, cov khoom siv no maj mam tshem tawm los ntawm tib neeg, thiab cov khoom siv cellulose ether yog siv los hloov cov khoom siv no. Qhov ntawd yog hais tias, rau kev tsim cov khoom siv hauv tsev, cellulose yog tam sim no tsuas yog cov khoom siv. Nyob rau hauv dej-resistant putty, nws muab faib ua ob hom: qhuav hmoov putty thiab putty muab tshuaj txhuam. Ntawm ob hom putty, hloov kho methyl cellulose thiab hydroxypropyl methyl yuav tsum tau xaiv. Lub viscosity specification feem ntau yog nyob ntawm 30000-60000cps. Lub luag haujlwm tseem ceeb ntawm cellulose hauv putty yog dej tuav, sib txuas thiab lubrication. Txij li cov qauv putty ntawm ntau lub tuam txhab sib txawv, qee qhov yog cov calcium grey, lub teeb calcium, cov cement dawb, thiab lwm yam, thiab qee qhov yog gypsum hmoov, grey calcium, lub teeb calcium, thiab lwm yam, yog li cov specifications, viscosity thiab nkag mus ntawm cellulose nyob rau hauv lub ob tug qauv kuj txawv. Tus nqi ntxiv yog li 2‰-3‰. Nyob rau hauv kev tsim kho ntawm phab ntsa scraping putty, txij li thaum lub hauv paus nto ntawm phab ntsa muaj ib tug tej yam degree ntawm nqus dej (qhov nqus dej ntawm phab ntsa cib yog 13%, thiab cov dej nqus tus nqi ntawm cov pob zeb yog 3-5%), ua ke nrog cov evaporation ntawm lub ntiaj teb sab nraud, yog hais tias lub putty poob dej sai heev, Nws yuav ua rau tawg los yog hmoov tshem tawm, uas yuav ua rau lub zog ntawm putty tsis muaj zog. Yog li ntawd, ntxiv cellulose ether yuav daws tau qhov teeb meem no. Tab sis qhov zoo ntawm cov muab tub lim, tshwj xeeb tshaj yog qhov zoo ntawm cov hmoov tshauv calcium kuj tseem ceeb heev. Vim lub siab viscosity ntawm cellulose, lub buoyancy ntawm lub putty kuj txhim kho, thiab sagging tshwm sim thaum lub sij hawm tsim kho kuj zam, thiab nws yog ntau xis thiab zog-txuag tom qab scraping. Nws yog qhov yooj yim dua los ntxiv cellulose ether hauv cov hmoov putty. Nws ntau lawm thiab siv tau yooj yim dua. Cov muab tub lim thiab cov khoom ntxiv tuaj yeem sib xyaw ua ke hauv cov hmoov qhuav.
(3) Pob zeb mortar:
Nyob rau hauv pob zeb mortar, kom ua tiav lub zog kawg, cov cement yuav tsum tau hydrated tag nrho. Tshwj xeeb tshaj yog nyob rau hauv lub caij ntuj sov kev tsim kho, lub pob zeb mortar poob dej sai heev, thiab cov kev ntsuas ntawm tiav hydration yog siv los tswj thiab sprinkle dej. Cov khoom siv pov tseg thiab kev ua haujlwm tsis yooj yim, qhov tseem ceeb yog cov dej tsuas yog nyob rau saum npoo, thiab cov dej hauv sab hauv tseem tsis tiav, yog li kev daws teeb meem no yog ntxiv yim cov dej tuav cov neeg ua haujlwm rau cov pob zeb zeb, feem ntau xaiv hydroxypropyl methyl. los yog methyl Cellulose, viscosity specification yog nyob nruab nrab ntawm 20000-60000cps, thiab cov nyiaj ntxiv yog 2%-3%. Cov dej tuav tus nqi tuaj yeem nce mus rau ntau dua 85%. Txoj kev siv hauv mortar pob zeb yog sib tov cov hmoov qhuav sib npaug thiab hliv rau hauv dej.
(4) Nyob rau hauv plastering gypsum, bonded gypsum, caulking gypsum:
Nrog txoj kev loj hlob sai ntawm kev tsim kho kev lag luam, tib neeg qhov kev thov rau cov khoom siv hauv tsev tshiab kuj tseem nce ntxiv ib hnub. Vim muaj kev nce hauv tib neeg kev paub txog kev tiv thaiv ib puag ncig thiab kev txhim kho txuas ntxiv ntawm kev tsim kho, cov khoom siv cementitious gypsum tau tsim sai heev. Tam sim no, feem ntau cov khoom siv gypsum yog plastering gypsum, bonded gypsum, inlaid gypsum, thiab pobzeb nplaum. Plastering gypsum yog cov khoom siv zoo plastering rau sab hauv phab ntsa thiab qab nthab. Lub phab ntsa nto plastered nrog nws yog zoo thiab du. Lub tsev tshiab lub teeb board nplaum yog cov khoom nplaum ua los ntawm gypsum ua cov khoom siv hauv paus thiab ntau yam khoom ntxiv. Nws yog tsim rau kev sib txuas ntawm ntau yam khoom siv hauv tsev inorganic. Nws yog non-toxic, Odorless, thaum ntxov lub zog thiab ceev ceev, muaj zog kev sib raug zoo thiab lwm yam ntxwv, nws yog ib tug pab txhawb rau lub tsev boards thiab thaiv kev tsim kho; gypsum caulking tus neeg saib xyuas yog qhov sib txawv ntawm cov gypsum boards thiab kho qhov muab tub lim rau phab ntsa thiab cov kab nrib pleb. Cov khoom gypsum no muaj ntau txoj haujlwm sib txawv. Ntxiv nrog rau lub luag haujlwm ntawm gypsum thiab lwm yam khoom ntim, qhov teeb meem tseem ceeb yog qhov ntxiv cellulose ether additives ua lub luag haujlwm tseem ceeb. Txij li thaum gypsum muab faib ua anhydrous gypsum thiab hemihydrate gypsum, qhov sib txawv gypsum muaj qhov sib txawv ntawm qhov kev ua tau zoo ntawm cov khoom, yog li thickening, dej tuav thiab retardation txiav txim siab qhov zoo ntawm gypsum tsev cov ntaub ntawv. Qhov teeb meem tshwm sim ntawm cov ntaub ntawv no yog hollowing thiab cracking, thiab thawj lub zog tsis tuaj yeem ncav cuag. Yuav kom daws tau qhov teeb meem no, nws yog xaiv hom cellulose thiab cov khoom siv sib xyaw ua ke ntawm cov retarder. Hauv qhov no, methyl lossis hydroxypropyl methyl 30000 feem ntau xaiv. -60000cps, tus nqi ntxiv yog 1.5%-2%. Ntawm lawv, cellulose tsom rua dej tuav thiab retarding lubrication. Txawm li cas los xij, nws tsis tuaj yeem cia siab rau cellulose ether ua ib qho retarder, thiab nws yog ib qho tsim nyog yuav tsum tau ntxiv citric acid retarder los sib tov thiab siv yam tsis muaj kev cuam tshuam rau thawj lub zog. Kev tuav dej feem ntau yog hais txog qhov dej ntau npaum li cas yuav ploj mus yam tsis muaj dej nqus dej sab nraud. Yog tias cov phab ntsa qhuav dhau lawm, kev nqus dej thiab cov evaporation ntawm lub hauv paus yuav ua rau cov khoom poob dej sai heev, thiab hollowing thiab cracking yuav tshwm sim. Txoj kev siv no yog tov nrog cov hmoov qhuav. Yog tias koj npaj ib qho kev daws teeb meem, thov xa mus rau txoj kev npaj ntawm cov tshuaj.
(5) Thermal rwb thaiv tsev mortar
Rwb thaiv tsev mortar yog ib yam tshiab ntawm sab hauv phab ntsa rwb thaiv tsev cov ntaub ntawv nyob rau hauv sab qaum teb cheeb tsam. Nws yog cov khoom siv phab ntsa ua ke los ntawm cov khoom siv rwb thaiv tsev, tshuaj khib thiab cov ntawv khi. Hauv cov khoom no, cellulose plays lub luag haujlwm tseem ceeb hauv kev sib txuas thiab ua kom muaj zog. Feem ntau xaiv methyl cellulose nrog viscosity siab (kwv yees li 10000eps), qhov ntau npaum li cas feem ntau ntawm 2‰-3‰), thiab txoj kev siv yog qhuav hmoov sib tov.
(6) Tus neeg saib xyuas interface
Xaiv HPNC 20000cps rau tus neeg saib xyuas interface, xaiv 60000cps lossis ntau dua rau cov nplais nplaum, thiab tsom mus rau cov thickener hauv tus neeg saib xyuas interface, uas tuaj yeem txhim kho lub zog tensile thiab tiv thaiv xub xub. Siv los ua cov dej tuav hauv kev sib txuas ntawm cov vuas kom tiv thaiv cov vuas los ntawm lub cev qhuav dej sai heev thiab poob tawm.
3. Kev lag luam saw xwm txheej
(1) Upstream kev lag luam
Cov ntaub ntawv tseem ceeb uas xav tau rau kev tsim cov cellulose ether suav nrog cov paj rwb zoo (lossis ntoo pulp) thiab qee cov tshuaj hnyav, xws li propylene oxide, methyl chloride, kua caustic soda, caustic soda, ethylene oxide, toluene thiab lwm yam khoom siv. Cov kev lag luam saum toj kawg nkaus ntawm qhov kev lag luam no suav nrog cov paj rwb zoo, cov chaw tsim khoom ntoo thiab qee cov lag luam tshuaj. Tus nqi hloov pauv ntawm cov ntaub ntawv tseem ceeb uas tau hais los saum toj no yuav muaj qhov sib txawv ntawm qhov cuam tshuam rau tus nqi tsim khoom thiab muag tus nqi ntawm cellulose ether.
Tus nqi ntawm cov paj rwb refined kuj yog siab heev. Siv cov khoom siv hauv tsev qib cellulose ether ua piv txwv, thaum lub sijhawm tshaj tawm, tus nqi ntawm cov paj rwb refined suav txog 31.74%, 28.50%, 26.59% thiab 26.90% ntawm cov nqi muag khoom ntawm cov khoom siv hauv tsev qib cellulose ether feem. Tus nqi hloov pauv ntawm cov paj rwb refined yuav cuam tshuam tus nqi ntawm cellulose ether. Lub ntsiab raw khoom rau zus tau tej cov paj rwb refined yog paj rwb linters. Cov paj rwb linters yog ib qho ntawm cov khoom lag luam hauv cov txheej txheem paj rwb, feem ntau yog siv los ua paj rwb pulp, refined paj rwb, nitrocellulose thiab lwm yam khoom. Kev siv tus nqi thiab siv cov paj rwb linters thiab paj rwb sib txawv heev, thiab nws cov nqi yog pom tseeb qis dua li cov paj rwb, tab sis nws muaj qee qhov sib cuam tshuam nrog tus nqi hloov pauv ntawm paj rwb. Kev hloov pauv ntawm tus nqi ntawm cov paj rwb linters cuam tshuam rau tus nqi ntawm cov paj rwb refined.
Qhov kev hloov pauv ntawm tus nqi ntawm cov paj rwb refined yuav muaj qhov sib txawv ntawm qhov cuam tshuam rau kev tswj cov nqi tsim khoom, tus nqi khoom thiab cov txiaj ntsig ntawm cov lag luam hauv kev lag luam no. Thaum tus nqi ntawm cov paj rwb refined siab thiab tus nqi ntawm cov ntoo pulp yog pheej yig, thiaj li yuav txo tau cov nqi, ntoo pulp yuav siv tau los hloov thiab ntxiv rau refined paj rwb, feem ntau yog rau zus tau tej cov cellulose ethers nrog tsawg viscosity xws li. tshuaj thiab zaub mov qib cellulose ethers. Raws li cov ntaub ntawv los ntawm lub vev xaib ntawm National Bureau of Statistics, xyoo 2013, kuv lub teb chaws cog paj paj yog 4.35 lab hectares, thiab lub teb chaws paj rwb tawm yog 6.31 lab tons. Raws li kev txheeb cais los ntawm Tuam Tshoj Cellulose Industry Association, nyob rau hauv 2014, tag nrho cov zis ntawm refined paj rwb uas tsim los ntawm loj domestic refined paj rwb manufacturers yog 332,000 tons, thiab cov khoom ntawm raw khoom yog ntau.
Cov khoom siv tseem ceeb rau kev tsim cov khoom siv tshuaj graphite yog steel thiab graphite carbon. Tus nqi ntawm cov hlau thiab graphite carbon account rau qhov feem ntau ntawm cov nqi tsim khoom ntawm cov khoom siv tshuaj graphite. Tus nqi hloov pauv ntawm cov khoom siv raw yuav muaj qee yam cuam tshuam rau cov nqi tsim khoom thiab muag cov khoom siv tshuaj graphite.
(2) Downstream kev lag luam ntawm cellulose ether
Raws li "kev lag luam monosodium glutamate", cellulose ether muaj qhov feem tsawg ntawm cellulose ether thiab muaj ntau yam kev siv. Cov kev lag luam qis qis tau tawg mus rau txhua qhov chaw ntawm lub neej hauv kev lag luam hauv tebchaws.
Feem ntau, kev lag luam kev tsim kho qis thiab kev lag luam vaj tsev yuav muaj qee yam cuam tshuam rau kev loj hlob ntawm kev thov rau cov khoom siv hauv tsev qib cellulose ether. Thaum kev lag luam kev tsim kho hauv tsev thiab kev lag luam vaj tsev loj hlob sai, kev lag luam hauv tsev xav tau cov khoom siv hauv tsev qib cellulose ether yog loj hlob sai. Thaum qhov kev loj hlob ntawm kev lag luam hauv tsev thiab kev lag luam vaj tse qeeb qeeb, qhov kev loj hlob ntawm kev thov rau cov khoom siv hauv tsev qib cellulose ether hauv kev lag luam hauv tsev yuav qeeb, uas yuav ua rau muaj kev sib tw hauv kev lag luam no thiab ua kom cov txheej txheem ciaj sia ntawm qhov haum tshaj plaws ntawm cov lag luam hauv kev lag luam no.
Txij li xyoo 2012, nyob rau hauv cov ntsiab lus ntawm kev poob qis hauv kev lag luam hauv tsev thiab kev lag luam vaj tsev, qhov kev thov rau cov khoom siv hauv tsev qib cellulose ether hauv kev lag luam hauv tsev tsis tau hloov pauv ntau. Cov laj thawj tseem ceeb yog: 1. Tag nrho cov nplai ntawm kev lag luam hauv tsev thiab kev lag luam vaj tsev yog qhov loj, thiab tag nrho cov kev lag luam xav tau kuj loj; cov neeg siv khoom lag luam tseem ceeb ntawm cov khoom siv hauv tsev qib cellulose ether yog maj mam nthuav dav los ntawm cov cheeb tsam tsim kev lag luam thiab cov nroog thib ib thiab thib ob mus rau thaj chaw nruab nrab thiab sab hnub poob thiab cov nroog thib peb, kev thov kev loj hlob hauv cheeb tsam thiab qhov chaw nthuav dav; 2. Qhov kev faib ua feem ntawm cellulose ether ntxiv rau hauv cov nqi ntawm cov khoom siv hauv tsev yog qhov tsawg, thiab cov nyiaj siv los ntawm ib tus neeg siv khoom yog me me, thiab cov neeg siv khoom tau tawg, uas yog qhov xav tau nruj, thiab tag nrho cov kev xav tau hauv kev lag luam hauv qab yog qhov sib txawv. ruaj khov; 3. Kev hloov pauv ntawm tus nqi lag luam yog ib qho tseem ceeb cuam tshuam rau kev thov cov qauv hloov ntawm cov khoom siv hauv tsev qib cellulose ether. Txij li thaum xyoo 2012, tus nqi muag ntawm cov khoom siv hauv tsev qib cellulose ether tau poob qis heev, uas tau ua rau poob qis hauv cov nqi ntawm cov khoom nruab nrab mus rau high-end, attracting ntau cov neeg muas zaub los yuav thiab xaiv, nce qhov kev thov rau nruab nrab-rau. -high-end khoom, thiab nyem qhov kev lag luam xav tau thiab nqi chaw rau cov qauv zoo tib yam.
Qib ntawm kev loj hlob ntawm kev lag luam kws tshuaj thiab kev loj hlob tus nqi ntawm kev lag luam kws tshuaj yuav cuam tshuam qhov kev thov rau qib tshuaj cellulose ether. Kev txhim kho ntawm tib neeg txoj kev ua neej nyob thiab kev tsim khoom noj khoom haus kev lag luam yog qhov tsim nyog rau kev ua lag luam xav tau cov khoom noj-qib cellulose ether.
4. Txoj Kev Loj Hlob ntawm Cellulose Ether
Vim qhov sib txawv ntawm cov qauv hauv kev lag luam thov rau cellulose ether, cov tuam txhab uas muaj qhov sib txawv thiab qhov tsis muaj zog tuaj yeem ua ke. Raws li qhov pom tseeb ntawm cov qauv sib txawv ntawm kev xav tau ntawm kev lag luam, cov tuam txhab tsim khoom hauv tsev cellulose ether tau siv cov tswv yim sib tw sib txawv raws li lawv tus kheej lub zog, thiab tib lub sijhawm, lawv yuav tsum tuav txoj kev loj hlob thiab kev taw qhia ntawm kev ua lag luam zoo.
(1) Kev ruaj ntseg ntawm cov khoom zoo yuav tseem yog qhov tseem ceeb ntawm kev sib tw ntawm cellulose ether cov lag luam
Cellulose ether tso nyiaj rau ib feem me me ntawm cov nqi tsim khoom ntawm feem ntau cov lag luam downstream hauv kev lag luam no, tab sis nws muaj kev cuam tshuam zoo rau cov khoom zoo. Ib nrab-rau-siab-kawg cov neeg siv khoom yuav tsum dhau los ntawm cov qauv kev sim ua ntej siv qee hom ntawm cellulose ether. Tom qab tsim cov qauv ruaj khov, nws feem ntau tsis yooj yim los hloov lwm lub npe ntawm cov khoom, thiab tib lub sijhawm, cov kev xav tau siab dua tau muab tso rau ntawm qhov zoo ntawm cellulose ether. Qhov tshwm sim no tseem ceeb dua nyob rau hauv high-end teb xws li cov tuam txhab loj loj hauv tsev thiab txawv teb chaws, tshuaj excipients, zaub mov additives, thiab PVC. Txhawm rau txhim kho kev sib tw ntawm cov khoom lag luam, cov tuam txhab tsim khoom yuav tsum xyuas kom meej tias qhov zoo thiab ruaj khov ntawm cov khoom sib txawv ntawm cov cellulose ether uas lawv muab tau tuaj yeem khaws cia rau lub sijhawm ntev, thiaj li tsim tau lub koob npe nrov ntawm kev lag luam.
(2) Kev txhim kho qib ntawm cov khoom siv thev naus laus zis yog kev txhim kho cov kev taw qhia ntawm kev lag luam hauv tsev cellulose ether
Nrog rau kev paub ntau lawm ntau lawm technology ntawm cellulose ether, qib siab dua ntawm daim ntawv thov kev siv tshuab yog qhov tsim nyog rau kev txhim kho kev sib tw ntawm cov lag luam thiab tsim kom muaj kev sib raug zoo ntawm cov neeg siv khoom. Cov tuam txhab paub zoo cellulose ether hauv cov teb chaws tsim kho feem ntau yog siv lub tswv yim kev sib tw ntawm "ntseeg cov neeg siv khoom siab loj + tsim cov kev siv qis thiab kev siv" los tsim cov cellulose ether siv thiab cov qauv siv, thiab teeb tsa cov khoom lag luam raws li cov ntawv thov sib txawv. los pab cov neeg siv khoom siv, thiab cog qoob loo hauv qab kev lag luam xav tau. Kev sib tw ntawm cellulose ether kev lag luam hauv cov teb chaws tsim tau ploj mus los ntawm cov khoom nkag mus rau kev sib tw hauv kev siv thev naus laus zis.
Post lub sij hawm: Feb-27-2023