Cellulose ether (cellaghetherhethethers) yog los ntawm cellulose los ntawm lub etherification cov tshuaj tiv thaiv ntawm ib lossis ob tog kev sib tsoo thiab kev sib tsoo qhuav. Raws li cov qauv siv hluav taws xob sib txawv ntawm ERET cov neeg muaj kev pab cuam cellulose tuaj yeem muab faib ua anionic, cationic thiab tsis muaj kev ua neej. Ionic cellulose muaj neeg raug hais tsuas yog suav nrog Carboxymethyl cellulose ether (cmc); Cov neeg uas tsis yog tshuaj ntsuam xyuas cov neeg uas tsis muaj xws li yog cov methyl cellulose ether (mc) methance cellulose ether (hpmc) thiab hydroxyethyl cellulose ether. Chlorine Etaws (HC) thiab lwm yam. Cov tsis muaj kev ua haujlwm tsis yog-ionic tau muab faib ua cov dej-soluble cov neeg muaj kev coj zoo thiab cov roj hmab dej-ionic yog siv hauv cov tshuaj cug. Nyob rau hauv muaj cov calcium ions, ionic cellulose ether yog tsis ruaj khov, yog li nws tsis tshua muaj txiv qaub, thiab lwm yam raws li cov ntaub ntawv tsoosting. Nonionic dej-soluble cellulose cov neeg muaj kev hais ua ke tau siv dav hauv cov ntaub ntawv kev lag luam hauv tsev vim tias lawv cov kev kawm ruaj khov thiab dej rov qab.
1. Tshuaj lom neeg ntawm cellulose ether
Txhua lub cellulose ether muaj cov qauv yooj yim ntawm cellulose -anhydrucuce qauv. Nyob rau hauv cov txheej txheem ntawm kev ua cellulose cellulose cellulose, lub cellulose fiber ntau yog thawj zaug ua kom sov hauv ib qho kev daws teeb meem alkaline. Cov tshuaj tiv thaiv fibrous yog huv thiab pulverized los ua ib qho kev hnav khaub ncaws hnav nrog ib qho kev lom zem.
Hauv cov txheej txheem ntau lawm ntawm MC, tsuas yog methyl chloride yog siv los ua tus sawv cev ntawm lub raum; Ntxiv rau methyl chloride, propylene oxide kuj tseem siv tau los nrhiav hydroxypropyl hloov pawg nyob hauv kev tsim HPMC. Ntau yam kev hais ua cellulose muaj cov methylopyl thiab hydroxypropal hloov cov lus qhia, uas cuam tshuam rau cov organic sib piv, qhov hluav taws kub ntawm cellulose ether.
2. Daim ntawv thov cov xwm txheej ntawm cellulose ether
Cellulose ether yog tsis-ionic semi-hluav taws xob semi-hluavtaws polymer, uas yog dej-soluble thiab cov kuab-soluble. Nws muaj cov teebmeem sib txawv hauv kev lag luam sib txawv. Piv txwv li, hauv cov khoom siv hauv tsev, nws muaj cov teebmeem hauv qab no:
①Wwater khaws tus neeg sawv cev ②tickener ntawm cov khoom ntiag tug ④film ua cov cuab yeej ⑤binder
Hauv kev lag luam polyvinyl chloride kev lag luam, nws yog emulsifier thiab dispersant; Hauv kev lag luam kws tshuaj, nws yog lub binder thiab muab tso tawm qeeb thiab tshuaj xyuas lub moj khaum, nws daim ntawv thov lub teb tseem yog qhov ntau tshaj plaws. Hauv qab no tsom rau kev siv thiab ua haujlwm ntawm cellulose ether hauv ntau cov ntaub ntawv hauv tsev.
(1) Hauv cov xim huv huv:
Hauv kev lag luam ntawm lhuab kev lag luam, kom xaiv hydroxyethyl cellulose, qhov kev sib raug zoo ntawm cov viscosity ntawm HBR250, thiab cov kev siv tshuaj ntau ntau ntxiv txog 1.5 ‰ -2 ‰. Lub ntsiab muaj nuj nqi ntawm hydroxyethyl hauv looj xim yog txhawm rau txhawm rau txhawm rau ntawm cov xim ntawm cov khoom siv, thiab nce viscing kev ua haujlwm ntawm kev tsim kho: Hydroxyethyl cellulose yog qhov yooj yim dua los siv. Nws tuaj yeem raug ntiab tawm hauv dej txias thiab dej kub, thiab nws tsis cuam tshuam los ntawm tus nqi PH. Nws tuaj yeem siv nrog kev thaj yeeb nyab xeeb ntawm lub siab thaum lub PI tus nqi yog nruab nrab ntawm 2 thiab 12. Ncaj dua rau hauv cov khoom lag luam, thiab cov hauv hydroxyethyl cellulose nrog Lub sijhawm sib cais ntawm ntau dua 30 feeb yog siv. Cov kauj ruam muaj raws li hauv qab no: ① muab tso rau hauv ib lub taub ntim nruab nrog lub siab-shear agitator. Quantitative ntshiab dej ②start txhib tsis tu ncua ntawm kev daws teeb meem qis dua, thiab lwm yam kom txog thaum txhua hydroxyethyl lub hauv paus yog yaj tag nrho , tom qab ntawd ntxiv lwm yam hauv cov mis, thiab zom kom txog thaum cov khoom tiav. Ⅱ. Nruab nrog Niam Dej cawv rau kev siv tom qab: Cov qauv no tuaj yeem xaiv cellulose tam sim no, uas muaj cov nyhuv tawm tsam. Qhov zoo dua ntawm txoj kev no yog tias nws tau muaj kev yoog tau zoo dua thiab tuaj yeem txuas ntxiv mus rau cov xim looj. Txoj kev npaj npaj yog tib yam li cov kauj ruam ①-④. Ⅲ. Npaj porridge rau kev siv tom qab: Vim tias organic cov kuab tshuaj 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 ethylene ua kua, xws li diylene glycol, thiab zaj duab xis-ua cov neeg sawv cev (xws li diethylene glyyl acetate). Cov porridge hydrothethyl cellulose tuaj yeem txuas ncaj qha ntxiv rau cov xim. Txuas ntxiv mus rau kom txog thaum yaj tag.
(2) hauv phab ntsa scraping putty:
Tam sim no, nyob hauv ntau lub nroog hauv kuv lub tebchaws, cov dej-tiv taus thiab txhuam-resistant ib puag ncig-phooj ywg putty tau muaj txiaj ntsig los ntawm cov neeg. Nws yog tsim los ntawm acetal cov tshuaj tiv thaiv ntawm vinyl cawv thiab formaldehyde. Yog li ntawd, cov ntaub ntawv no maj mam muab tshem tawm los ntawm cov neeg, thiab lub cellulose siv ether series yog siv los hloov cov khoom no. Uas yog hais, rau kev txhim kho cov ntaub ntawv ua kom zoo hauv tsev, cellulose yog tam sim no yog cov khoom siv xwb. Nyob rau hauv cov dej-resistant putty, nws tau muab faib ua ob hom: qhuav hmoov putty thiab putical muab tshuaj txhuam. Ntawm cov ob hom putty, hloov methyl cellulose thiab hydroxypropyl yuav tsum tau xaiv. Lub viscosity specification feem ntau yog ntawm 30000-6000000CPS. Lub luag haujlwm tseem ceeb ntawm cellulose hauv putty yog dej khaws cia, kev sib koom tes thiab lubrication. Txij li cov qauv putty ntawm ntau cov tuam ntxhab sib txawv, qee qhov grey calcium, dawb xis mas, thiab lwm yam. ob daim qauv kuj sib txawv. Tus nqi ntxiv yog hais txog 2 ‰ -3 ‰. Hauv kev tsim kho ntawm phab ntsa scraping puttty, txij li hauv paus ntawm phab ntsa muaj qee qhov kev nqus dej yog 13%, thiab cov khoom nqus dej ntawm cov pob zeb yog 3-5%), Ua ke nrog txoj kev evaped ntawm lub ntiaj teb sab nraud, yog tias lub putty loses tau nrawm heev, nws yuav ua rau tawg lossis hmoov tshem tawm, uas yuav ua rau muaj zog lub zog ntawm lub putty. Yog li no, ntxiv cellulose ether yuav daws cov teeb meem no. Tab sis qhov zoo ntawm tus muab tub lim, tshwj xeeb yog qhov zoo ntawm cov hmoov av tshauv kuj tseem tseem ceeb heev. Vim yog cov viscosity siab ntawm cellulose, lub buoyancy ntawm lub putty tseem ua kom zoo dua qub thaum lub sijhawm kev tsim kho kuj yog zam, thiab ua haujlwm zoo dua thiab ua haujlwm zoo dua tom qab scraping. Nws yooj yim dua ntxiv cellulose ether hauv cov hmoov putty. Nws cov kev tsim khoom thiab siv tau yooj yim dua. Tus muab tub lim thiab cov quav ntxiv tuaj yeem sib xyaw nrog cov hmoov nplej qhuav.
(3) Qhob cug:
Nyob rau hauv cov chaw sib khib, kom ua tiav lub zog kawg, cov xis mas hydrated. Tshwj xeeb tshaj yog nyob rau hauv kev tsim kho lub caij ntuj sov, lub pob zeb pov tseg dhau nrawm, thiab ntsuas ntawm cov dej ua tiav tau siv los tswj cov dej thiab ua kom huv. Cov khoom pov tseg thiab kev ua haujlwm tsis yooj yim, qhov kev daws teeb meem yog tseem tsis tiav, thiab kev daws teeb meem rau lub tshuaj khib nyiab rau lub ntsej muag. Feem ntau xaiv HydroxyPropyl methyl Los yog methyl cellulose, viscosity specification yog nruab nrab ntawm xyoo 20000-6000000Cps, thiab tus nqi ntxiv yog 2% -3%. Cov dej tswj kav tuaj yeem khaws tau nce ntxiv rau ntau dua 85%. Cov txheej txheem ntawm kev siv nyob rau hauv coll qhob yog kom sib xyaw cov hmoov qhuav hmoov thiab muab nws tso rau hauv dej.
(4) Nyob rau hauv plastering gypsum, sib khi ua gypsum, caulking gypsum:
Nrog rau kev txhim kho sai ntawm kev tsim kho kev tsim kho, cov neeg xav tau rau cov ntaub ntawv hauv tsev tshiab kuj tseem nce hnub ib hnub. Vim tias qhov nce ntawm tib neeg qhov kev tiv thaiv ntawm ib puag ncig kev tiv thaiv ib puag ncig thiab kev txhim kho txuas ntxiv ntawm kev tsim kho, nyem cov khoom noj gypsum tau tsim sai. Tam sim no, feem ntau cov gypsum feem ntau yog plastering gypsum, sib khi gypsum, inlaid gypsum, thiab pobzeb nplaum. Plastering gypsum yog lub tshuab nqus hluav taws xob zoo rau sab hauv phab ntsa thiab qab nthab. Phab ntsa deg plastered nrog nws yog qhov zoo thiab du. Lub Tsev Tshiab Chaw Tsim Tsa Khoom nplaum yog cov khoom nplaum ua los ntawm gypsum raws li ntau cov khoom sib ntxiv. Nws yog qhov tsim nyog rau kev sib raug zoo ntawm ntau cov khoom siv phab ntsa hauv tsev. Nws tsis yog-lom, tsis muaj ntxhiab, lub zog thaum ntxov, kev sib raug zoo, nws yog ib qho khoom siv txhawb nqa rau kev tsim tsa cov laug cam thiab thaiv kev tsim kho; Gypsum Caulking tus neeg sawv cev yog ib tug gap muab tub lim ntawm gypsum laug cam thiab kho cov muab tub lim rau cov phab ntsa thiab cov kab nrib pleb. Cov khoom lag luam gypsum no muaj cov lus sib txawv ntawm cov haujlwm sib txawv. Ntxiv nrog rau lub luag haujlwm ntawm Gypsum thiab lwm cov fillers, qhov teeb meem tseem ceeb yog tias cov cellulose ntxiv ether additive ua lub luag haujlwm. Txij li gypsum tau muab faib ua anhydrous gypsum thiab Hemihydrate Gypsum, kom muaj kev sib tw, dej rov qab txiav txim siab qhov zoo ntawm gypsum cov ntaub ntawv hauv tsev. Cov teeb meem tshwm sim ntawm cov ntaub ntawv no yog hollowing thiab tawg, thiab thawj lub zog tsis tuaj yeem hu tau. Txhawm rau kom daws tau qhov teeb meem no, nws yog xaiv cov hom cellulose thiab cov qauv siv hloov tshiab ntawm Retarder. Hauv qhov no, methyl lossis hydroxypropyl pthyl 30000 feem ntau xaiv. -60000CPS, qhov nyiaj ntxiv yog 1.5% -2%. Ntawm lawv, cellulose tsom rau kev tswj kav dej thiab retarding lubrication. Txawm li cas los xij, nws tsis yooj yim sua kom cia siab rau ntawm cellulose ether raws li ib tug retarder, thiab nws yog qhov tsim nyog los sib tov thiab siv yam tsis cuam tshuam rau thawj lub zog. Dej khaws cia feem ntau yog hais txog ntau npaum li cas dej yuav ploj mus ib txwm tsis muaj dej nqus dej. Yog tias lub phab ntsa qhuav dhau, kev nqus dej thiab ntuj evaporation rau ntawm cov khoom ntom ntom ntom ntom ntom ntom nrawm, thiab hollowing thiab tawg yuav tshwm sim. Hom no ntawm kev siv yog tov nrog hmoov qhuav. Yog tias koj npaj kev daws teeb meem, thov saib txoj kev npaj ntawm kev daws teeb meem.
(5) thermal rwb thaiv tsev cug
Rwb thaiv kev cap yog ib hom tshiab ntawm phab ntsa sab hauv phab ntsa sab hauv phab ntsa hauv sab hauv sab qaum teb cheeb tsam. Nws yog cov duab hluav taws xob synthesized los ntawm rwb thaiv tsev cov khoom, 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 xaiv methyl cellulose nrog siab viscosity (txog 10000EPs), cov tshuaj ntau) yog feem ntau ntawm 2 ‰ -3 ‰), thiab lub hau kev siv yog hmoov nplej qhuav.
(6) tus neeg sawv cev cuam tshuam
Xaiv HPNnc 20000cps rau tus neeg sawv cev sab hauv, xaiv 60000CPS lossis ntau dua rau cov tuab tuab rau cov neeg sawv cev hauv lub zog thiab cov xub ntiag los tiv thaiv lub zog. Siv los ua cov neeg sawv cev hauv dej hauv cov vuas vuas los tiv thaiv cov vuas los tiv thaiv cov dej tsis ntev thiab poob tawm.
3. Kev lag luam saw
(1) Kev lag luam nce ntxiv
Cov khoom siv raw rau ntau lawm rau kev tsim cov cellulose ither muaj cov tshuaj phib tawj, ua kua noj tshuaj ntsuab, ethylene dej qab zib, toluene thiab lwm cov ntaub ntawv ib pab pawg. Kev lag luam kev lag luam nce ntxiv ntawm kev lag luam no muaj xws li rwb paj rwb, ntoo pulp ntau lawm ua lag luam thiab qee cov lag luam tshuaj lom neeg. Tus nqi hloov pauv ntawm cov ntaub ntawv tau hais tseg saum toj no yuav muaj sib txawv ntawm cov nqi ntawm cov nqi ntau lawm thiab muag tus nqi ntawm cellulose ether.
Tus nqi ntawm kev ua kom zoo nkauj paj rwb yog qhov tseem ceeb. Siv lub tsev cov khoom siv ntawm cellulose ether ua piv txwv, thaum lub sijhawm muag khoom siv tau suav nrog kev siv cov khoom siv hauv xov tooj no ethotholose. Tus nqi hloov pauv ntawm cov paj rwb rov qab yuav cuam tshuam rau kev tsim cov nqi ntawm cellulose ether. Cov khoom siv tseem ceeb rau kev tsim cov paj rwb yog cov paj rwb. Paj rwb linters yog ib qho ntawm cov khoom hauv cov txheej txheem paj rwb ntau, feem ntau yog siv los tsim cov paj rwb pulp, cov paj rwb, nitroocellulose thiab lwm yam khoom. Kev siv tus nqi thiab kev siv cov paj rwb rinters thiab paj rwb yog qhov sib txawv, thiab nws muaj qee qhov kev sib kho nrog tus nqi hloov kho ntawm paj rwb. Hloov pauv nyob rau hauv tus nqi ntawm paj rwb bowers cuam tshuam tus nqi ntawm refined paj rwb.
Cov kev sib pauv ntse hauv tus nqi ntawm cov nqi paj rwb rov qab muaj feem cuam tshuam ntawm kev tswj hwm ntawm cov nqi ntau lawm, cov txiaj ntsig ntawm cov lag luam hauv kev lag luam no. Thaum tus nqi ntawm lub paj rwb rov qab muaj siab thiab tus nqi ntawm cov nqi ntoo yog qhov siv hluav taws xob, feem ntau rau kev tsim cov neeg muaj kev pab ua ntoo nrog cov viscosity tsis tshua muaj xws li Kws Tshuaj Kho Mob Thiab Khoom Noj Khoom Noj Qib Qib Qib Cellulose Uas Yog Tias Muaj Cov Lus Qhia. Raws li cov ntaub ntawv los ntawm lub vev xaib ntawm National Coreau of Anchin, kuv lub teb chaws cov zis tawm yog 4.31 lab tons. Raws li kev txheeb cais los ntawm Tuam Tshoj Cellulose Kev Lag Luam Kev Lag Luam, nyob rau xyoo 2014, tag nrho cov khoom tawm ntawm cov chaw tsim paj rwb yog 332,000 tons, thiab cov khoom siv ntawm cov khoom siv raw yog muaj qoob loo.
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 account rau qhov sib npaug ntawm cov nqi tsim khoom ntawm cov khoom siv tshuaj lom. Tus Nqi Ntawm Cov Khoom Siv Raw no yuav muaj qee yam cuam tshuam rau cov nqi tsim khoom thiab muag cov nqe ntawm graphite tshuaj siv.
(2) poob peev kev lag luam ntawm cellulose ether
Raws li "Industrial monosodium glutamate", cellulose glutamate ", cellulose glutamate", cellulose glutamate ", cellulose genortion ntawm cellulose ether thiab muaj ntau daim ntaub ntawv thov. Cov kev lag luam hauv qab yog tawg nyob rau hauv tag nrho cov taug kev ntawm lub neej nyob rau hauv kev lag luam hauv tebchaws.
Feem ntau, txoj kev tsim kho kab tsev thiab kev lag luam av yuav muaj qee yam kev lag luam ntawm kev thov kom lub tsev cov khoom siv ether ether. Thaum cov kev tsim kho kev tsim kho hauv tsev thiab kev lag luam av tau loj hlob sai, kev lag luam hauv tsev sai sai, kev lag luam hauv tsev sai sai ether ether ether ether ether yog loj hlob sai heev. Thaum txoj kev tsim kho kev tsim kho ntawm kev tsim kho cov kev tsim kho hauv tsev thiab kev lag luam av hauv kev sib tw yuav ua rau kev sib tw hauv kev sib tw hauv kev lag luam no thiab nrawm txheej txheem ntawm kev muaj sia nyob ntawm Tus fittest ntawm cov lag luam hauv kev lag luam no.
Txij li xyoo 2012, nyob rau hauv cov ntsiab lus ntawm kev qeeb hauv kev tsim kho kev tsim kho hauv tsev thiab vaj tse ethere hauv kev ua lag luam hauv tsev tsis tau hloov pauv. Cov laj thawj tseem ceeb yog: 1. Cov txheej txheem kev tsim kho tag nrho ntawm kev tsim kho hauv tsev thiab kev lag luam av yog qhov loj me me; Cov neeg siv khoom tseem ceeb ntawm lub tsev cov khoom siv Qib Ntu Etaws yog maj hauv cov cheeb tsam thiab thaj chaw thib peb muaj peev xwm thiab muaj peev xwm kev loj hlob thiab chaw nthuav dav; 2. Qhov kev faib tawm ntawm cellulose ether ntxiv rau hauv tus nqi tsim tsev yog tsawg, thiab cov nyiaj tau siv rau cov neeg siv khoom me me, thiab tag nrho cov kev thov hauv kev lag luam hauv qab yog ruaj khov; 3. Qhov hloov pauv ntawm tus nqi lag luam yog qhov tseem ceeb cuam tshuam rau cov neeg thov cov qauv hloov pauv ntawm lub tsev cov khoom lag luam ether ether. Txij li xyoo 2012, tus muag khoom ntawm lub tsev cov khoom siv qib pes me me ether tau nqis siab rau tus neeg yuav khoom thaum muaj kev yuav khoom thiab xaiv cov neeg siv ntau dua rau ib nrab-rau -High-end-end khoom, thiab nyem rau cov khoom lag luam thiab nqe nqe rau cov qauv zoo tib yam.
Cov qib kev txhim kho ntawm kev lag luam kws tshuaj thiab kev loj hlob ntawm cov kev lag luam kws tshuaj yuav cuam tshuam rau cov neeg siv xov tooj ether 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.
4. Kev tsim kho ntawm cellulose ether
Vim yog cov txheej txheem sib txawv hauv kev ua lag luam xav rau cellulose ether, cov tuam txhab nrog cov khoom siv sib txawv thiab cov kev ua haujlwm tsis sib xws. Hauv kev pom ntawm cov qauv pom tseeb ntawm kev ua lag luam xav tau, kev sib tw cellule tau saws cov kev sib tw sib txawv thiab cov kev coj ntawm kev ua lag luam zoo.
(1) ua kom muaj kev ruaj ntseg ntawm cov khoom lag luam zoo tseem yuav cov kev sib tw tseem ceeb ntawm cellulose ether cov lag luam
Cellulose ether nyiaj rau ib tug nqi me me ntawm cov nqi tsim khoom lag luam hauv kev lag luam no, tab sis nws muaj qhov cuam tshuam zoo ntawm cov khoom zoo. Mid-to-high-end-wb-kawg-kawg cov neeg siv khoom siv yuav tsum mus sim cov kev sim hauv cov kev sim ua ntej siv qee hom ntawm cellulose ether. Tom qab sib sau cov mis nyob ruaj khov, nws tsis yooj yim los hloov lwm lub sijhawm, thiab tib lub sijhawm, cov qib siab tau muab tso rau qhov ruaj khov ntawm cellulose ether. Qhov kev tshwm sim no muaj koob npe ntau dua nyob rau hauv High-end liaj rau cov khoom siv cov khoom tsim kom loj hauv tsev thiab txawv teb chaws, tshuaj ntxiv, khoom noj ntxiv, thiab PVC. Txhawm rau txhim kho kev sib tw ntawm cov khoom lag luam, yuav tsum ua kom cov khoom lag luam ethere thiab muaj peev xwm tswj tau ntev, yog li tsim lub khw muag khoom zoo dua.
(2) txhim kho theem ntawm cov khoom siv cov khoom siv thev naus laus zis yog qhov kev coj ua ntawm cellulose soculose ether cov lag luam
Nrog rau kev nce qib me me thev naus laus zis ntawm kev siv tshuab, muaj qib siab dua ntawm kev sib tw ntawm cov lag luam thiab kev tsim cov neeg siv khoom ruaj khov. Cov tuam txhab cell zoo etheries hauv cov teb chaws tsim tau cov neeg siv khoom etheres thiab siv cov qauv kev siv nyiaj txiag loj, thiab tsim kho cov khoom siv ntawm kev sib sau ua ke Txhawm rau pab txhawb cov neeg siv khoom siv, thiab kom cog cov dej hauv khw muag khoom lag luam. Kev sib tw ntawm cellulose enterprises hauv cov teb chaws tsim tau tau ploj mus los ntawm cov khoom nkag mus rau hauv daim ntawv thov kev sib tw thev naus laus zis.
Lub sijhawm Post: Feb-27-2023