Cellulose (Cellulosehether) yog ua los ntawm cellulose uas dhau ntawm lub etherification cov tshuaj tiv thaiv ntawm ib lossis ntau qhov chaw sawv cev thiab muaj av qhuav. Cov neeg hais ua haujlwm cellulose tuaj yeem faib ua anionic, cationic thiab cov kev pab cuam tshuam los ntawm cov qauv tshuaj los hloov chaw. Ionic cellulose ether tsuas yog carboxymethyl cellulose ether (cmc); Tsis-ionican cellulose cellulose feem ntau suav nrog methyl cellulose cellulose ether (hpmc) thiab hydroxyethyl cellulose ether (HC). Tsis yog-ionic ether yog muab faib ua dej-soluble ether, thiab tsis-oluble dej-soluble ether yog siv hauv cov tshuaj cug khoom. Nyob rau hauv muaj cov calcium ions, ionic cellulose ether tsis ruaj khov, yog li nws tsis ruaj khov hauv qhuav cov khoom noj qabent, hydrated txiv qaub ua cov ntaub ntawv cementing. Cov dej tsis yog-ionic-soluble cellulose ether yog dav siv nyob rau hauv cov ntaub ntawv kev lag luam hauv tsev vim nws txoj kev ncua kev ruaj khov thiab dej rov qab.
1. Tshuaj lom neeg ntawm cellulose ether
Txhua lub cellulose ether muaj cov qauv yooj yim ntawm cellulose, lub cev qhuav dej. Nyob rau hauv cov txheej txheem ntawm kev ua cellulose cellulose cellulose, lub cellulose fiber ntau yog thawj zaug ua kom sov hauv alkaline daws, thiab tom qab ntawd kho nrog lub cev sawv cev. Cov tshuaj tiv thaiv fibrous yog kev ua kom huv thiab av los ua cov khaub ncaws hnav ntawm cov khaub ncaws zoo.
Nyob rau hauv cov txheej txheem ntawm mc ntau lawm, tsuas yog methane chloride tau siv raws li etherifying tus neeg sawv cev. Ntxiv rau methane chloride, propylene oxide yog siv los tsim HPMC kom tau hydroxypropylprot pawg. Ntau yam kev hais ua cellulose muaj cov methyl loj dua thiab hydroxypropal hloov cov kev sib piv uas cuam tshuam rau cov solubility uas cuam tshuam ether cov tshuaj ether thiab kub thiab txias.
2. Daim ntawv thov cov xwm txheej ntawm cellulose ether
Cellulose ether yog hom ntawm cov tsis muaj ionic polymer, nrog rau cov khoom siv sib txawv, nws muaj cov haujlwm sib txawv ntawm cov khoom lag luam hauv qab no:
① Dej tuav tus neeg sawv cev ② thickening tus neeg sawv cev ③ levening cov cuab yeej ④ Zaj duab xis tsim cov cuab yeej ⑤ binder
Hauv kev lag luam polyvinyl chloride kev lag luam, nws yog emulsifier, dispersant; Hauv kev lag luam kws tshuaj, nws yog ib hom binder thiab qeeb thiab tswj cov khoom siv pob txha, vim yog li ntawm cellulose muaj ntau yam kev siv tau ntau tshaj plaws. Hauv qab no tsom rau kev siv ntawm cellulose ethere hauv ntau cov ntaub ntawv hauv tsev thiab lub luag haujlwm.
(1) Cov xim looj xim looj:
Nyob rau hauv looj cov kab xim, xav xaiv hydroxyethyl cellulose, qhov kev qhia tshwj xeeb yog RT30000- 50000CAP, nws yog qhov siv tau los siv, cov ntaub ntawv siv HBR200- 5000000- 50000- 50000- 50000- 50000- 50000- 50000- 50000- 50000- 50000- 50000 -2 ‰ -2 ‰ sab laug thiab sab xis. Lub luag haujlwm tseem ceeb ntawm hydroxyethyl hauv looj xim yog txhawm rau ua kom muaj kev tsim kho ntawm cov pegments, ua rau muaj kev tsim kho ntawm lawb, thiab tuaj yeem txhim kho cov kev ua tau zoo ntawm kev ua haujlwm ntawm kev ua tau zoo ntawm kev ua yeeb yam: hydroxyethyl cellulose yog qhov yooj yim siv. Nws tuaj yeem yaj nyob rau hauv ob qho dej txias thiab dej kub, thiab tsis cuam tshuam los ntawm PH tus nqi. Nws tuaj yeem siv kev nyab xeeb hauv PI tseem ceeb ntawm 2 txog 12 feeb ntawm cov khoom siv huv si, nws siv cov kauj ruam hauv qab, (1) txuas ntxiv rau hauv kev daws teeb meem kom txog thaum txhua tus Cov khoom ntub dej thiab ua kom tuaj koom nrog lwm cov kev sib ntxiv thiab alkaline ntxiv (5) do kom txog rau thaum muaj lwm yam ntawm cov mis, sib tsoo rau cov khoom tiav. Ii, tau nruab nrog niam cawv tos: cov qauv no tuaj yeem xaiv hom tseem ceeb, thiab muaj Mildew - cov ntaub ntawv pov thawj ntawm cellulose. Txoj kev no muaj qhov zoo dua ntawm kev hloov pauv ntau dua, tuaj yeem txuas ntxiv rau cov xim looj, kev npaj yog tib yam li cov kauj ruam. Ⅲ. Npaj porridge rau siv: Vim tias cov kuab tshuaj organic yog cov kuab tshuaj tsis zoo rau hydroxyethyl (insoluble), yog li cov kuab tshuaj no tuaj yeem siv los npaj porridge. Cov kuab tshuaj uas feem ntau siv yog cov organic kua hauv hnab tawv me me, tom qab kev sib koom tes nrog cov xim pleev xim rau hauv, tom qab ua yeeb yaj kiab tseem txuas ntxiv kom yaj txog tam sim no.
(2) Hauv phab ntsa scraping Putty:
Tam sim no, kev tiv thaiv ib puag ncig hom Powty, uas yog dej tiv thaiv thiab txhuam cov nyom hauv ntau lub nroog, tau txais kev mloog los ntawm tib neeg xwb. Hauv ob peb xyoos dhau los, vim tias cov putty ua los ntawm lub tshuab kua nplaum radiatehyde roj kom puas cov neeg noj qab haus huv, cov kua nplaum hauv tsev yog cov tshuaj tiv thaiv kab mob acetal. Yog li no, cov khoom no maj mam muab tshem tawm los ntawm cov neeg, thiab kev hloov ntawm cov khoom siv ether ether series, cov cellulose yog ib hom khoom xwb. Nyob rau hauv cov dej tiv taus putty tau muab faib ua ob hom dej qhuav putty thiab puttical cellulose feem ntau xav tau xaiv cov putterty thiab cov tshuaj pleev pob zeb, cov tshuaj pleev ib ce, ua kom lubrication, lubrication, lubrication, lubrication, lubrication li cas Vim tias cov mis putty ntawm txhua lub chaw tsim khoom yog tsis zoo li qub, muaj cov tshuaj ntsuab, yog li cov khoom muaj txiaj ntsig zoo, yog li cov khoom siv viscium, yog li cov khoom siv viscium, yog li cov khoom siv viscium, yog li cov khoom siv dawb, yog qhov ntau ntawm kev ntxiv yog li 2 ‰ -3 ‰. Nyob rau hauv lub tshuab phab ntsa tau dhuav nrog menyuam tsim kho, lub hauv paus phab ntsa muaj qee qhov tsis muaj zog, yog li ntawd, tom qab kev koom tes nrog lub cellule (ceg tawv ether yuav daws cov teeb meem no. Tab sis qhov zoo ntawm tus muab tub lim, tshwj xeeb tshaj yog cov calcium tshauv, tseem yog qhov tseem ceeb heev. Vim hais tias ntawm lub viscosity siab ntawm cellulose, nws tseem ua rau kev tshwm sim ntab ntawm kev tsim kho, thiab nws yog qhov zoo dua thiab ua zog-txuag tom qab scraping. Nyob rau hauv cov hmoov putty cellulose ether yuav tsim nyog ntxiv cov ntsiab lus
(3) Qhob cug:
Nyob rau hauv cov khoom siv cug, puas tau ua tiav lub zog ntawm cov dej khov, yog qhov tseem ceeb ntawm cov chaw ua haujlwm ntawm cov dej khov, yog li cov dej sib xyaw ua ke, yog qhov tseem ceeb ntawm cov dej khov kho me me, Viscosity specifications ntawm 20000- 60000CPS, ntxiv tus nqi 2% - 3%. Txog, cov dej khaws cia yuav nce ntxiv rau ntau dua 85%, kev siv cov qauv hauv cov hmoov kom qhuav rau hauv cov dej yuav ua tau.
(4) Hauv kev pleev xim plaster, tsev sib txuas plaster thiab caulking plaster:
Nrog rau kev txhim kho kev tsim kho kom zoo, cov neeg xav tau ntawm kev tiv thaiv lub tsev tshiab yog tseem muaj nce zuj zus ntawm kev tsim kho ib hnub twg, kev txhim kho cov khoom siv gypsum tau tsim kho sai. Tam sim no cov khoom lag luam uas nquag tshaj plaws muaj stucco gypsum, sib khi ua gypsum, embedded gypsum, pobzeb binder. Stucco Plaster yog hom zoo huv si sab hauv phab ntsa thiab muag ruaj khov, tsis muaj kev cuam tshuam thiab poob tawm kev tiv thaiv, thiab muaj kev tiv thaiv hluav taws; Adhesive Gypsum yog hom kev txhim kho lub teeb ci ntsa iab, yog qhov tsim nyog rau cov khoom siv hluav taws xob, nws yog qhov muaj txiaj ntsig zoo nkauj, nws yog lub rooj sib txuas lus ua kom muaj txiaj ntsig, thaiv cov ntaub ntawv txhawb nqa; Gypsum sealant yog tus muab tub lim rau qhov sib txawv ntawm gypsum daim hlau thiab kho ntawm phab ntsa thiab cov kab nrib pleb. Cov khoom lag luam gypsum no muaj ntau cov haujlwm sib txawv, ntxiv rau cov neeg ua haujlwm sib txawv, cov teeb meem tseem ceeb yog tias cov khoom sib ntxiv ether ntxiv ua lub luag haujlwm. Vim tias gesso tau muab faib ua cov neeg uas tsis muaj dej ntws thiab ib nrab gessen, dej sib txawv yog qhov sib txawv, cov ntaub ntawv qeeb yog kev txiav txim siab zoo ntawm gesso cov ntaub ntawv hauv tsev. Cov teeb meem tshwm sim ntawm cov ntaub ntawv no yog tsis muaj qhov teeb meem no, los daws cov me me ntawm methyl lossis hydroxypropyl 30000- 60000CPS, tus nqi ntawm 1.5% - 2%. Nruab nrab ntawm, cellulose los ntawm lub homphiaj yog dej ceev retarded lubrication. Txawm li cas los xij, hauv cov txheej txheem no, nws tsis yog ua tau kom cia siab rau ntawm cellulose ether raws li retarder, thiab citric acid retarder yuav tsum tau ntxiv rau qhov sib xyaw kom thawj lub zog yuav tsis cuam tshuam. Dej khaws cia feem ntau yog hais txog cov nyiaj ntawm cov dej ntuj poob yam tsis muaj dej nqus dej. Yog tias lub phab ntsa qhuav, cov dej hauv paus yuav nqus thiab ntuj evaporation ua rau cov khoom poob dhau, thiab tseem yuav muaj lub nruas khoob thiab cov khoom tawg. Qhov kev siv no siv rau cov hmoov av qhuav xyaw, yog tias txoj kev daws teeb meem tuaj yeem xa mus rau txoj kev daws teeb meem.
(5) thermal rwb thaiv tsev cug
Thermal rwb thaiv tsev cug yog lub tshuab hluav taws xob tshiab phab ntsa nyob rau sab qaum teb Suav. Nws yog cov duab hluav taws xob hluavtaws los ntawm cov khoom siv thermal rwb thaiv tsev, tshuaj khib thiab siv. Hauv cov khoom siv no, cellulose ua lub luag haujlwm tseem ceeb hauv kev sib raug zoo thiab ua kom muaj zog. Feem ntau, siab viscosity methyl cellulose (hais txog 10000EPs) tau xaiv, thiab cov tshuaj ntau npaum li cas ntawm 2 ‰ -3 ‰. Cov txheej txheem ntawm kev siv yog cov hmoov nplej ua kom sib xyaw.
(6) tus neeg sawv cev cuam tshuam
Interface Tus neeg sawv cev xaiv HPMC200CPS, pobzeb berde xaiv ntawm ntau dua 60000CPS, hauv lub zog cuam tshuam rau cov neeg muaj zog thiab cov xub lub zog thiab lwm yam teebmeem. Nws yog siv los ua dej tuav cov neeg sawv cev hauv cov nplais los tiv thaiv cov nplais los ntawm kev poob dej sai thiab poob tawm.
3. Muaj saw hlau
(1) Kev lag luam nce ntxiv
Cov khoom siv raw tseem ceeb uas xav tau los tsim cellulose ether muaj cov tshuaj lom neeg siv tshuaj ntsuab, ua kua alkali, ethylene oxide, toluene thiab lwm yam ib pab pawg. Kev lag luam kev lag luam nce hauv lub tshav puam muaj xws li, ntoo pulp tsim thiab qee cov lag luam tshuaj lom neeg. Kev hloov pauv ntawm cov nqi ntawm cov ntaub ntawv nyoos tau hais los saum toj no yuav muaj cov txiaj ntsig sib txawv ntawm cov nqi tsim khoom thiab muag tus nqi ntawm cellulose ether.
Tus nqi ntawm kev ua kom zoo nkauj paj rwb yog siab dua. Siv cov ntaub ntawv hauv tsev ether ua piv txwv, lub sijhawm ua feem ntawm cov ntaub ntawv muag khoom siv hauv khw Refined Paj Rwb Lwm yuav cuam tshuam rau cov nqi tsim tus nqi ntawm cellulose ether. Cov khoom siv tseem ceeb ntawm cov paj rwb yog paj rwb flece. Paj rwb luv pawg yog ib qho ntawm cov khoom hauv cov txheej txheem ntawm cov paj rwb ntau heev, uas yog siv ntau lawm hauv cov paj rwb puab, kho cov paj rwb, nitroocellulose thiab lwm yam khoom. Tus nqi siv thiab kev siv cov kev sib txawv ntawm paj rwb plaub ya ri Paj rwb deb plaub ya dej yuav cuam tshuam rau tus nqi ntawm cov paj rwb refined.
Tus ntse kev hloov pauv ntawm tus nqi ntawm lub paj rwb rov qab yuav cuam tshuam rau cov nqi tsim khoom, cov nqi khoom lag luam ntawm cov lag luam hauv kev lag luam no rau ntau qib. Thaum tus nqi ntawm lub paj rwb rov qab yog qhov tseem ceeb thiab tus nqi ntawm cov ntaub paj rwb, uas yog siv cov viscrosy ether thiab ntxiv li kev kho mob thiab zaub mov qib ether ether. Raws li lub vev xaib ntawm National Coreau ntawm cov txheeb cais, Tuam Txhab Cov Paj Rwb yog 4.35 lab hectares hauv xyoo 2013, thiab lub teb chaws lub paj rwb tawm tau 6.31 lab tons. Raws li cov txheeb cais ntawm Tuam Tshoj cellulose kev lag luam kev lag luam, nyob rau xyoo 2014, tag nrho cov khoom tawm ntawm cov neeg tsim khoom paj rwb muaj 332,000 tons, muaj cov khoom siv ru zaub mov nplua.
Cov ntaub ntawv raw tseem ceeb rau kev tsim cov khoom siv tshuaj ntsuab yog cov hlau thiab graphite carbon. Tus nqi ntawm cov hlau thiab graphite carbon accounted rau kev tsim cov nqi tsim ntawm cov khoom siv tshuaj ntsuab graphite yog siab dua. Tus nqi hloov ntawm xws cov ntaub ntawv raw yuav muaj qee yam cuam tshuam rau cov nqi tsim khoom thiab muag cov nqe ntawm graphite tshuaj siv.
(2) cellulose ether txoj kev lag luam
Cellulose ether raws li "Industrial Monulose Glutamate", cov kev siv dej ntau, muaj kev taug kev hauv lub neej hauv kev lag luam hauv tebchaws.
Nyob rau hauv ib txwm muaj xwm txheej kev tsim kho thiab txoj kev nce qib kev tsim kho thiab kev lag luam av yuav muaj qee yam kev loj hlob ntawm cov ntaub ntawv hauv tsev cov cellulose ether. Thaum cov kev tsim kho kev tsim kho hauv tsev thiab kev lag luam av tau loj hlob sai dua, kev lag luam hauv tsev loj heev rau kev tsim cov ntaub ntawv cov ntaub ntawv hauv tsev. Thaum kev loj hlob ntawm kev tsim kho kev tsim kho hauv tsev thiab kev lag luam hauv tsev yuav muaj kev lag luam ntau, thiab ua kom cov txheej txheem sib tw kom qeeb, thiab nrawm cov txheej txheem ntawm kev ua kom muaj kev muaj sia nyob ntawm cov lag luam hauv kev lag luam.
Txij li xyoo 2012, qhov kev thov rau cov ntaub ntawv ntim cov ntaub ntawv ether rau hauv kev ua lag luam hauv tsev tsis muaj kev lag luam thiab kev lag luam av. Cov laj thawj tseem ceeb yog: ua ntej, tag nrho cov kev tsim kho kev tsim kho hauv tsev thiab kev lag luam av, tag nrho cov lag luam xav tau loj; Lub chaw lag luam tseem ceeb ntawm kev tsim cov ntaub ntawv hauv tsev ether ether tau maj mam thiab cov nroog thib peb thiab qhov chaw uas muaj peev xwm loj dua yog nthuav dav. Thib ob, tus nqi ntawm cellulose erse ntawm cov kev faib ua feem ntawm cov neeg siv khoom lag luam yog tsawg, yooj yim los tsim cov lag luam rigid, tag nrho cov kev thov hauv kev lag luam hauv qab yog qhov ruaj khov; Peb, Lub Tsev Cov Khoom Siv Kev Lag Luam Kev Lag Luam yog cuam tshuam rau cov khoom lag luam etherles, nyiam ntau cov khoom lag luam ntawm cov khoom lag luam high-etnering
Kev txhim kho kev lag luam ntawm lub tshuaj lag luam thiab kev loj hlob ntawm cov kev lag luam kws tshuaj yuav cuam tshuam rau cov lus thov hloov ntawm cov kws kho mob ether. Cov kev txhim kho ntawm tib neeg cov qauv muaj sia thiab tsim cov khoom noj khoom haus muaj kev lag luam yog qhov tseem ceeb los ua lag luam xav kom muaj cov khoom noj-qib ether.
6. Txoj kev txhim kho ntawm cellulose ether
Vim yog cov txheej txheem sib txawv hauv kev ua lag luam ethere, cov lag luam nrog lub zog sib txawv tuaj yeem ua si. Raws li cov yam ntxwv ntawm cov qauv kev xav tau ntawm kev ua lag luam xav tau, kev siv celluluction los txais yuav cov tswv yim sib txawv los ua kev sib tw ntawm kev ua lag luam sib txawv thiab kev taw qhia.
(1) kom ntseeg tau qhov ruaj khov ntawm cov khoom lag luam zoo tseem yuav yog cov ntsiab lus tseem ceeb ntawm cellulose ether cov lag luam
Cellulose ether hauv kev lag luam ntawm cov kev lag luam qis dua hauv cov nqi lag luam hauv cov nqi yog qhov me me, tab sis muaj qhov cuam tshuam loj dua ntawm cov khoom lag luam zoo. Nruab nrab thiab siab kawg cov neeg siv khoom siv hauv kev siv hom qauv ntawm cellulose etulation ua ntej tsim ntawm kev sim. Tom qab sib sau cov mis ruaj khov, nws yog feem ntau tsis yooj yim los hloov lwm yam khoom lag luam, tab sis kuj yuav muab tso rau tom qab cov qib siab ntawm cellulose ether. Qhov xwm txheej no muaj koob hmoov ntau dua nyob rau hauv cov ntaub ntawv hauv tsev thiab txawv teb chaws tsim cov lag luam, tshuaj ntxiv cov tshuaj, zaub mov ntxiv, pvc thiab lwm qhov chaw siab-kawg. Txhawm rau txhim kho kev sib tw ntawm cov khoom lag luam, kev lag luam ntau lawm yuav tsum ua kom ntseeg tau tias kev sib txawv ntawm cellulose ether tuaj yeem ua kom muaj kev ruaj khov zoo.
(2) txhawm rau txhawm rau txhim kho cov txheej txheem kev siv tshuab yog qhov kev coj ua ntawm cellulose cellulose ether cov lag luam
Hais txog cellulose ether Ntau lawm tshuab tau nce zuj zus, qib siab dua ntawm kev ua tiav kev sib tw ntawm cov lag luam, kev tsim cov neeg siv khoom ruaj khov. Kev siv cov tebchaws uas muaj kev sib tw siv thiab siv cov khoom siv hauv xov tooj, thiab siv cov khoom siv cellule, thiab yog li faus cov neeg siv khoom lag luam, thiab yog li faus cov neeg siv khoom lag luam, thiab yog li faus cov neeg siv khoom lag luam Kev sib tw ntawm cellulose ether cov lag luam hauv cov teb chaws tsim tau tau nkag mus rau hauv lub teb ntawm daim ntawv thov tshuab los ntawm cov khoom.
Cellulose ether, hu ua "Industrial marutamate", muaj qhov zoo ntawm kev siv, cov nyhuv me me, ntiv tes zoo thiab lwm yam phooj ywg.
Nws yog dav siv nyob rau hauv cov ntaub ntawv hauv tsev, tshuaj, khoom noj thiab textile
Lub Sijhawm Post: Feb-14-2025