Cellulose etheryog tsim los ntawm cellulose los ntawm etherification cov tshuaj tiv thaiv nrog ib los yog ob peb etherification tus neeg sawv cev thiab qhuav sib tsoo.Raws li cov qauv tshuaj sib txawv ntawm ether substituents, cellulose ethers tuaj yeem muab faib ua anionic, cationic, thiab non ionic ethers.Ionic cellulose ethers feem ntau suav nrog carboxymethyl cellulose ethers (CMC);Tsis yog ionic cellulose ethers feem ntau suav nrog methyl cellulose ether (MC), hydroxypropyl methyl cellulose ether (HPMC), thiab hydroxyethyl cellulose ether (HC).Tsis yog ionic ethers tau muab faib ua dej-soluble ethers thiab roj soluble ethers, thiab feem ntau yog siv rau hauv cov khoom khib nyiab.Nyob rau hauv lub xub ntiag ntawm calcium ions, ionic cellulose ether tsis ruaj khov, yog li nws tsis tshua muaj siv nyob rau hauv qhuav mix mortar khoom siv cement, hydrated txiv qaub, thiab lwm yam ntaub ntawv cementitious.Tsis yog ionic dej-soluble cellulose ethers yog dav siv nyob rau hauv lub tsev cov ntaub ntawv kev lag luam vim lawv suspension stability thiab dej tuav cov khoom.
1. Cov khoom siv tshuaj ntawm cellulose ether
Txhua cellulose ethermuaj cov qauv hauv paus ntawm cellulose - lub cev qhuav dej qabzib.Nyob rau hauv tus txheej txheem ntawm kev tsim cellulose ether, cellulose fibers yog thawj rhuab nyob rau hauv ib tug alkaline tov, thiab ces kho nrog etherification agents.Cov khoom siv tshuaj tiv thaiv fibrous yog purified thiab hauv av los tsim cov hmoov sib xws nrog qee qhov zoo.
Thaum lub sij hawm tsim khoom ntawm MC, tsuas yog methane chloride yog siv los ua tus neeg sawv cev etherifying;Ntxiv nrog rau kev siv methane chloride hauv kev tsim khoomHPMC, epoxy propylene kuj tseem siv tau kom tau txais cov khoom siv hydroxypropyl.Ntau yam cellulose ethers muaj ntau yam methyl thiab hydroxypropyl hloov pauv, uas cuam tshuam rau cov organic solubility ntawm cellulose ether tov thiab thermal gel kub thiab lwm yam khoom.
2. Daim ntawv thov scenarios ntawm cellulose ether
Cellulose etheryog ib qho uas tsis yog ionic semi hluavtaws polymer nrog cov dej-soluble thiab hnyav-raws li cov khoom, thiab nws 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 Tus neeg saib xyuas dej ② Thickener ③ Leveling cuab yeej ④ Zaj duab xis tsim khoom ⑤ Adhesive
HauvPVCkev lag luam, nws yog ib qho emulsifier thiab dispersant;Hauv kev lag luam kws tshuaj, cellulose yog ib hom kev sib khi thiab cov khoom siv qeeb-tso tawm, thiab qhov tseeb vim tias nws muaj ntau yam cuam tshuam, nws daim ntawv thov teb kuj yog qhov dav tshaj plaws.Hauv qab no, peb yuav tsom mus rau txoj 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, nws yog ib qho tsim nyog los xaivhydroxyethyl cellulose.Cov lus qhia dav dav rau kev sib npaug viscosity yog RT30000-5000cps, uas sib haum rau HBR250 specification.Kev siv ntau npaum li cas feem ntau yog nyob ib ncig ntawm 1.5 ‰ -2 ‰.Lub luag haujlwm tseem ceeb ntawm hydroxyethyl hauv cov xim latex yog thickening, tiv thaiv cov xim gel, ua rau cov xim dispersion, latex stability, kev txhim kho cov viscosity ntawm cov khoom, thiab pab txhawb kev ua haujlwm ntawm kev tsim kho: hydroxyethyl cellulose yog ib qho yooj yim siv, uas tuaj yeem yaj hauv. dej txias thiab dej kub, thiab tsis cuam tshuam los ntawm tus nqi PH.Nws tuaj yeem siv tau zoo ntawm PI tus nqi 2-12.Cov nram qab no peb txoj kev yog siv: Kuv ncaj qha ntxiv nyob rau hauv ntau lawm: Txoj kev no yuav tsum xaiv hydroxyethyl cellulose ncua hom, nrog lub sij hawm dissolution ntau tshaj 30 feeb.Cov kauj ruam siv tau raws li hauv qab no: ① Muab cov dej ntshiab kom muaj nuj nqis rau hauv lub thawv uas muaj lub tshuab ua kom siab siab;② Pib nplawm ntawm qis qis yam tsis nres, Tib lub sijhawm, maj mam thiab sib npaug ntxiv hydroxyethyl rau cov tshuaj.③ Ntxiv nplawm kom txog thaum tag nrho cov khoom siv ntub dej.④ Ntxiv lwm cov tshuaj ntxiv thiab alkaline additives.⑤ Do kom txog thaum tag nrho cov hydroxyethyl yaj tag.Tom qab ntawd ntxiv lwm cov khoom xyaw hauv cov mis thiab zom kom txog thaum cov khoom tiav.II.Kev npaj ntawm niam cawv rau kev siv: Txoj kev no tuaj yeem xaiv hom tam sim ntawd thiab muaj kev tiv thaiv pwm ntawm cellulose.Qhov zoo ntawm txoj kev no yog tias nws muaj qhov yooj yim thiab tuaj yeem ncaj qha ntxiv rau cov xim latex.Txoj kev npaj yog tib yam li cov kauj ruam ① rau ④.III.Kev npaj Congee zoo li cov khoom siv rau yav tom ntej: Txij li cov kuab tshuaj organic yog cov kuab tshuaj phem (insoluble) rau hydroxyethyl, cov kuab tshuaj no tuaj yeem siv los npaj Congee zoo li cov tshuaj.Feem ntau siv cov kuab tshuaj organic yog cov kua organic hauv cov xim emulsion, xws li ethylene glycol, propylene glycol thiab zaj duab xis ua tus neeg sawv cev (xws li diethylene glycol butyl acetate).Lub Congee zoo li hydroxyethyl cellulose tuaj yeem ncaj qha ntxiv rau cov xim, thiab tom qab ntawd txuas ntxiv mus kom txog thaum yaj tag.
(2) Hauv scraping phab ntsa putty:
Tam sim no, ib puag ncig tus phooj ywg putty uas tiv taus dej thiab txhuam tau muaj txiaj ntsig hauv ntau lub nroog hauv Suav teb.Ob peb xyoos dhau los, vim muaj cov pa roj formaldehyde los ntawm putty ua los ntawm lub tsev nplaum, uas ua rau tib neeg noj qab haus huv, lub tsev nplaum tau npaj los ntawm acetal cov tshuaj tiv thaiv ntawm polyvinyl cawv thiab formaldehyde.Yog li cov khoom siv no maj mam raug txiav tawm los ntawm tib neeg, thiab qhov hloov pauv rau cov khoom siv no yog cov khoom siv cellulose ether series, uas txhais tau tias tsim cov khoom siv hauv tsev.Cellulose yog tam sim no tsuas yog cov khoom muaj.Nyob rau hauv dej resistant putty, nws yuav muab faib ua ob hom: qhuav hmoov putty thiab putty muab tshuaj txhuam.Feem ntau, hloov kho methyl cellulose thiab hydroxypropyl methyl raug xaiv raws li ob hom putty, thiab viscosity specification feem ntau yog nyob nruab nrab ntawm 30000-60000 cps.Lub luag haujlwm tseem ceeb ntawm cellulose hauv putty yog khaws cov dej, daim ntawv cog lus, thiab lubricate.Vim yog cov qauv putty sib txawv ntawm ntau lub tuam txhab, qee qhov yog cov calcium grey, lub teeb calcium, cov cement dawb, thiab lwm yam, thaum lwm tus yog gypsum hmoov, grey calcium, lub teeb calcium, thiab lwm yam, cov specifications, viscosity, thiab infiltration ntawm cellulose rau ob cov qauv kuj txawv, nrog rau qhov sib ntxiv ntawm kwv yees li 2 ‰ -3 ‰.Nyob rau hauv kev tsim kho ntawm scraping phab ntsa putty, vim muaj tej yam dej nqus ntawm lub hauv paus nto ntawm phab ntsa (cov dej nqus tus nqi ntawm cib phab ntsa yog 13%, thiab cov dej nqus tus nqi ntawm cov pob zeb yog 3-5%), ua ke nrog sab nraud. evaporation, yog hais tias lub putty poob dej sai heev, nws yuav ua rau tawg los yog hmoov tev, thiab yog li tsis muaj zog lub zog ntawm putty.Yog li ntawd, ntxiv cellulose ether yuav daws tau qhov teeb meem no.Txawm li cas los xij, qhov zoo ntawm cov khoom ntim, tshwj xeeb tshaj yog qhov zoo ntawm grey calcium, kuj tseem ceeb heev.Vim lub siab viscosity ntawm cellulose, nws kuj tseem txhim khu lub buoyancy ntawm lub putty, tsis txhob sagging thaum lub sij hawm tsim kho, thiab yog ntau xis thiab zog-txuag rau scrape.Cov cellulose ether nyob rau hauv cov hmoov putty yuav tsum tau ntxiv rau lub Hoobkas tsim nyog.Nws cov khoom siv thiab siv tau yooj yim, thiab cov khoom ntim thiab cov khoom ntxiv tuaj yeem sib xyaw nrog cov hmoov qhuav.Kev tsim kho kuj tseem yooj yim, thiab kev faib dej ntawm qhov chaw nyob ntawm seb siv pes tsawg.
(3) Pob zeb mortar:
Nyob rau hauv pob zeb mortar, kom ua tiav qhov kawg lub zog, nws yog ib qho tsim nyog yuav tsum tau ua kom tiav cov cement.Tshwj xeeb tshaj yog nyob rau hauv lub caij ntuj sov kev tsim kho, thaum cov dej poob ntawm cov pob zeb mortar yog ceev heev, ua kom tiav hydration ntsuas yog coj los tswj thiab sprinkle dej.Txoj kev no ua rau cov khoom siv dej pov tseg thiab tsis yooj yim hauv kev ua haujlwm, thiab qhov tseem ceeb yog tias cov dej tsuas yog nyob rau saum npoo, thaum lub hydration sab hauv tseem tsis tiav.Yog li, txoj kev daws teeb meem no yog:, Ntxiv yim cov dej tuav cov neeg ua haujlwm cellulose rau mortar pob zeb feem ntau xaiv hydroxypropyl methyl lossis methyl cellulose, nrog cov viscosity specifications xws li 20000 txog 60000 cps thiab ib qho ntxiv ntawm 2% mus rau 3%.Nyob ib ncig ntawm, 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 tom qab ntawd ncuav dej rau hauv lub qhov ncauj.
(4) Nyob rau hauv plastering gypsum, bonding gypsum, thiab caulking gypsum:
Nrog rau txoj kev loj hlob sai ntawm kev tsim kho kev lag luam, qhov kev thov rau cov khoom siv hauv tsev tshiab kuj tseem nce ntxiv ib hnub.Vim muaj 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 gypsum muaj xws li plastering gypsum, bonding gypsum, embedded gypsum, pobzeb binder, thiab lwm yam. Gypsum plastering yog cov khoom zoo rau plastering sab hauv phab ntsa thiab ru tsev slabs.Cov phab ntsa nws yog siv rau plastering yog ilv thiab du, tsis tev tawm cov hmoov thiab nrees adhering rau lub hauv paus, tsis muaj cracking los yog tev tawm, thiab nrog hluav taws kev tiv thaiv muaj nuj nqi;Bonded gypsum yog ib hom tshiab ntawm lub tsev lub teeb board binder, uas yog tsim los ntawm gypsum raws li cov khoom siv hauv paus thiab ntxiv nrog ntau yam khoom siv dag zog.Nws yog qhov tsim nyog rau kev sib txuas ntawm ntau yam khoom siv phab ntsa hauv tsev thiab muaj cov yam ntxwv ntawm cov khoom tsis muaj tshuaj lom, tsis muaj ntxhiab, muaj zog thaum ntxov, ceev ceev, thiab muaj zog sib txuas.Nws yog cov khoom txhawb nqa rau lub tsev board thiab thaiv kev tsim kho;Gypsum sib koom muab tub lim yog cov khoom ntim rau qhov khoob ntawm gypsum boards, nrog rau kev kho cov muab tub lim rau phab ntsa thiab cov kab nrib pleb.Cov khoom gypsum no muaj ntau txoj haujlwm sib txawv.Ntxiv nrog rau gypsum thiab lwm yam fillers, qhov teeb meem tseem ceeb yog qhov ntxiv cellulose ether additives ua lub luag haujlwm tseem ceeb.Vim qhov tseeb tias gypsum tau muab faib ua anhydrous gypsum thiab hemihydrate gypsum, ntau hom gypsum muaj qhov sib txawv ntawm kev ua haujlwm ntawm cov khoom.Yog li ntawd, thickening, dej tuav, thiab retarding txiav txim siab qhov zoo ntawm gypsum tsev cov ntaub ntawv.Qhov teeb meem tshwm sim nrog cov ntaub ntawv no yog hollowing thiab cracking, thiab pib lub zog tsis tuaj yeem ncav cuag.Yuav kom daws tau qhov teeb meem no, nws yog ib qho tsim nyog yuav tau xaiv cov qauv ntawm cellulose thiab kev siv cov khoom sib xyaw ua ke ntawm retarders.Hauv qhov no, methyl lossis hydroxypropyl methyl feem ntau yog xaiv los ntawm 30000 txog 60000 cps, nrog rau qhov sib ntxiv ntawm 1.5% -2%.Ntawm lawv, cellulose tsom rau nws cov dej tuav, retarding, thiab lubricating zog.Txawm li cas los xij, nws tsis tuaj yeem siv cellulose ether ua tus retarder hauv cov txheej txheem no, thiab nws yog ib qho tsim nyog yuav tsum tau ntxiv citric acid retarder sib tov thiab siv nws yam tsis muaj kev cuam tshuam rau thawj lub zog.Cov dej tuav tus nqi feem ntau yog hais txog tus nqi ntawm cov dej tsis zoo yam tsis muaj kev nqus dej sab nraud.Yog tias cov phab ntsa qhuav, cov dej nqus thiab cov evaporation ntawm lub hauv paus nto ua rau cov khoom poob dej sai heev, uas yuav ua rau hollowing thiab tawg.Txoj kev siv no yog rau kev sib xyaw cov hmoov qhuav.Yog tias npaj ib qho kev daws teeb meem, thov xa mus rau txoj kev npaj tshuaj.
(5) 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, uas yog ib tug phab ntsa uas muaj xws li rwb thaiv tsev ntaub ntawv, mortar, thiab adhesives.Cellulose plays lub luag haujlwm tseem ceeb hauv kev sib txuas thiab ua kom muaj zog hauv cov khoom no.Feem ntau, methyl cellulose nrog viscosity siab (ib ncig 10000eps) raug xaiv, thiab qhov ntau npaum li cas ntawm 2 ‰ -3 ‰.Txoj kev siv yog qhuav hmoov sib tov.
(6) Interfacial tus neeg saib xyuas
Tus neeg saib xyuas interface yuav tsum yogHPMC20000 cps, thiab cov nplaum rau cov vuas yuav tsum tshaj 60000 cps.Nyob rau hauv tus neeg saib xyuas interface, lub hom phiaj yuav tsum yog ntawm thickening tus neeg saib xyuas, uas tuaj yeem txhim kho lub zog tensile thiab xub tsis kam.Siv cov dej tuav cov neeg sawv cev hauv kev sib txuas ntawm cov vuas kom tiv thaiv kom tsis txhob poob sai vim dej poob.
3. Kev lag luam saw xwm txheej
(1) Upstream kev lag luam
Cov ntaub ntawv tseem ceeb uas yuav tsum tau uacellulose ethersuav nrog cov paj rwb zoo (lossis ntoo pulp) thiab qee cov tshuaj hnyav, xws li epoxy propane, chloromethane, kua alkali, flake alkali, ethylene oxide, toluene, thiab lwm yam khoom siv.Cov kev lag luam nce toj hauv qhov kev lag luam no suav nrog cov paj rwb zoo thiab cov ntoo pulp tsim cov lag luam, nrog rau qee cov lag luam tshuaj.Qhov kev hloov pauv ntawm cov nqi ntawm cov khoom siv 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, qhov feem pua ntawm cov paj rwb ua kom zoo rau cov nqi muag khoom ntawm cov khoom siv hauv tsev qib cellulose ether yog 31.74%, 28.50%, 26.59%, thiab 26.90%, feem.Kev hloov pauv ntawm cov nqi paj rwb zoo yuav cuam tshuam rau tus nqi tsim khoom ntawm cellulose ether.Cov khoom siv tseem ceeb rau kev tsim cov paj rwb refined yog paj rwb linter.Paj rwb linter yog ib qho ntawm cov khoom lag luam hauv cov txheej txheem paj rwb, feem ntau yog siv los tsim cov khoom xws li paj rwb pulp, refined paj rwb, thiab nitrocellulose.Muaj qhov sib txawv tseem ceeb ntawm kev siv tus nqi thiab kev siv cov paj rwb linter thiab paj rwb, thiab lawv cov nqi qis dua li cov paj rwb, tab sis muaj qee qhov cuam tshuam nrog kev hloov pauv ntawm cov paj rwb.Tus nqi hloov pauv ntawm paj rwb linter yuav cuam tshuam tus nqi ntawm cov paj rwb refined.
Qhov kev hloov pauv loj heev hauv cov nqi paj rwb zoo 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.Hauv cov ntsiab lus ntawm cov nqi siab dua rau cov paj rwb zoo dua thiab cov nqi pheej yig dua rau cov ntaub ntoo ntoo, txhawm rau txo cov nqi, cov ntoo pulp tuaj yeem siv los hloov thiab ntxiv rau cov paj rwb refined, feem ntau yog tsim cov cellulose ethers nrog qis viscosity xws li tshuaj thiab zaub mov. qib cellulose ethers.Raws li cov ntaub ntawv lub vev xaib ntawm National Bureau of Statistics, xyoo 2013, Tuam Tshoj cov paj rwb cog thaj tsam yog 4.35 lab hectares, thiab lub teb chaws paj rwb ntau lawm yog 6.31 lab tons.Raws li cov ntaub ntawv txheeb cais ntawm Tuam Tshoj Cellulose Industry Association, nyob rau hauv 2014, tag nrho cov zis ntawm refined paj rwb los ntawm loj domestic refined paj rwb ntau lawm tuam txhab uas muag yog 332000 tons, nrog txaus mov ntawm raw khoom.
Cov khoom siv tseem ceeb rau kev tsim cov khoom siv tshuaj graphite yog cov hlau 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) Qhov xwm txheej ntawm downstream cellulose ether kev lag luam
Cellulose ether, raws li "kev lag luam monosodium glutamate", muaj qhov feem pua ntawm cov khoom siv ntxiv thiab ntau yam kev siv, nrog rau cov kev lag luam hauv qab tau tawg nyob rau hauv ntau yam kev lag luam ntawm lub teb chaws kev lag luam.
Feem ntau, 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 qhov kev loj hlob ntawm kev tsim kho hauv tsev thiab kev lag luam vaj tsev yog qhov nrawm, qhov kev thov rau cov khoom siv hauv tsev qib cellulose ether hauv kev lag luam hauv tsev tau loj hlob sai.Thaum qhov kev loj hlob ntawm kev tsim kho hauv tsev thiab kev lag luam vaj tse qeeb qeeb, qhov kev thov rau cov khoom siv hauv tsev qib cellulose ether hauv kev lag luam hauv tsev yuav qeeb, ua rau kev sib tw hauv kev lag luam no hnyav dua thiab ua kom cov txheej txheem ciaj sia taus ntawm cov lag luam hauv kev lag luam no. .
Txij li thaum 2012, nyob rau hauv cov ntsiab lus ntawm ib tug slowdown nyob rau hauv lub domestic kev tsim kho thiab vaj tse industries, tsis muaj ib tug tseem ceeb hloov nyob rau hauv qhov kev thov rau lub tsev cov ntaub ntawv qib cellulose ether nyob rau hauv lub domestic kev ua lag luam.Cov laj thawj tseem ceeb yog: thawj zaug, tag nrho cov nplai ntawm kev tsim kho hauv tsev thiab kev lag luam vaj tsev yog qhov loj, thiab tag nrho kev lag luam xav tau kuj loj;Cov neeg siv khoom lag luam tseem ceeb rau kev tsim cov khoom siv qib cellulose ether tau maj mam nthuav dav los ntawm cov cheeb tsam tsim kev lag luam thiab cov nroog thib ib thiab qib thib ob mus rau thaj tsam nruab nrab thiab sab hnub poob thiab cov nroog thib peb, nthuav dav lub peev xwm thiab qhov chaw rau kev loj hlob hauv tsev;2, Qhov sib ntxiv ntawm cellulose ether account rau ib feem tsawg ntawm cov nqi ntawm cov khoom siv hauv tsev, thiab cov nyiaj siv los ntawm ib tus neeg siv khoom tsawg.Cov neeg siv khoom sib cais, uas tuaj yeem yooj yim tsim cov kev thov nruj.Tag nrho cov kev thov nyob rau hauv lub downstream kev ua lag luam yog qhov ruaj khov;3 、 Kev hloov pauv ntawm tus nqi lag luam yog qhov tseem ceeb cuam tshuam rau cov qauv kev thov ntawm cov khoom siv hauv tsev qib cellulose ether.Txij li xyoo 2012, tus nqi ntawm cov khoom siv hauv tsev qib cellulose ether tau poob qis, ua rau muaj qhov txo qis hauv cov nqi ntawm cov khoom nruab nrab mus rau high-end, nyiam cov neeg siv khoom ntau dua los yuav thiab xaiv, nce qhov kev thov rau nruab nrab mus rau high-end khoom, thiab squeezing lub lag luam xav tau thiab nqi chaw ntawm cov khoom qauv zoo tib yam.
Qib kev loj hlob thiab kev loj hlob ntawm kev lag luam kws tshuaj yuav cuam tshuam qhov kev thov rau qib tshuaj cellulose ether.Kev txhim kho ntawm tib neeg kev ua neej nyob thiab kev loj hlob ntawm kev lag luam khoom noj khoom haus yog qhov tsim nyog rau kev ua lag luam xav tau cov zaub mov qib cellulose ether.
6. Txoj kev loj hlob ntawm cellulose ether
Vim qhov sib txawv ntawm cov qauv hauv kev lag luam xav tau rau cellulose ether, qhov xwm txheej tau tshwm sim uas cov tuam txhab uas muaj zog sib txawv tuaj yeem ua ke.Nyob rau hauv kev teb rau cov qauv kev sib txawv ntawm cov kev xav tau ntawm kev lag luam, domestic cellulose ether manufacturers tau txais kev sib txawv ntawm cov tswv yim sib tw raws li lawv tus kheej lub zog, thaum tseem ua tau zoo tuav txoj kev loj hlob thiab kev taw qhia ntawm kev ua lag luam.
(1) Kev ruaj ntseg ntawm cov khoom lag luam tseem yuav yog qhov tseem ceeb ntawm kev sib tw rau cov lag luam cellulose ether
Cellulose ethersuav rau ib feem me me ntawm cov nqi tsim khoom hauv feem ntau cov lag luam downstream hauv kev lag luam no, tab sis muaj kev cuam tshuam loj rau cov khoom zoo.Cov neeg siv khoom siab kawg yuav tsum tau ua cov qauv kev sim ua ntej siv qee hom thiab qauv ntawm cellulose ether.Tom qab tsim cov qauv ruaj khov, nws feem ntau tsis yooj yim los hloov cov khoom lag luam los ntawm lwm lub npe, thiab cov kev xav tau siab dua kuj 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 domestic thiab txawv teb chaws loj-scale tsim cov khoom lag luam, tshuaj excipients, khoom noj khoom haus additives, PVC, thiab lwm yam. Txhawm rau txhim kho cov kev sib tw ntawm cov khoom, cov tuam txhab tsim khoom yuav tsum xyuas kom meej tias qhov kev ruaj ntseg zoo sib txawv. batches ntawm cellulose ether muab tuaj yeem khaws cia rau lub sijhawm ntev, thiaj li tsim tau lub koob npe nrov hauv 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 tsim cov thev naus laus zis ntau zuj zus ntawm cellulose ether, qib siab dua ntawm kev siv thev naus laus zis yog qhov zoo rau cov lag luam los txhim kho lawv cov kev sib tw zoo thiab tsim kev sib raug zoo ntawm cov neeg siv khoom.Cov tuam txhab nto moo cellulose ether hauv cov teb chaws tsim kho feem ntau yog siv lub tswv yim sib tw ntawm "tsom mus rau cov neeg siv khoom siab kawg thiab tsim cov kev siv qis qis thiab kev siv", txhim khocellulose etherdaim ntawv thov thiab kev siv cov qauv, thiab teeb tsa cov khoom lag luam raws li qhov sib txawv segmented daim ntawv thov kev pab cuam los pab cov neeg siv khoom, thiab cog qoob loo kev lag luam hauv qab no.Kev sib tw ntawm cellulose ether cov lag luam hauv cov teb chaws tsim tau hloov ntawm cov khoom siv rau kev siv tshuab.
Post lub sij hawm: Aug-31-2023