1. Cov ntsiab lus tseem ceeb ntawm kev lag luam:
Tsis yog-ionic cellulose ethers muaj xws li HPMC, HEC, MHEC, MC, HPC, thiab lwm yam, thiab feem ntau yog siv los ua cov yeeb yaj kiab, cov ntaub ntawv, cov tshuaj tua kab mob, cov tshuaj tua dej, cov thickeners, emulsifiers thiab stabilizers, thiab lwm yam., yog dav siv. nyob rau hauv ntau lub teb xws li coatings, cov ntaub ntawv hauv tsev, cov khoom siv tshuaj niaj hnub, kev tshawb nrhiav roj thiab roj, tshuaj, khoom noj, textiles, papermaking, thiab lwm yam, ntawm cov khoom loj tshaj plaws yog nyob rau hauv cov txheej txheem txheej thiab cov khoom siv hauv tsev.
Ionic cellulose ethers yog CMC thiab nws cov khoom hloov kho PAC. Piv nrog rau cov uas tsis yog-ionic cellulose ethers, ionic cellulose ethers muaj qhov tsis zoo kub tsis kam, ntsev tsis kam thiab ruaj khov, thiab lawv cov kev ua tau zoo cuam tshuam los ntawm lub ntiaj teb sab nraud. Thiab nws yog ib qho yooj yim rau kev hnov mob nrog Ca2+ muaj nyob rau hauv qee cov txheej txheem thiab cov khoom siv hauv tsev los tsim cov nag lossis daus, yog li nws tsis tshua muaj siv hauv cov khoom siv hauv tsev thiab txheej txheej. Txawm li cas los xij, vim nws cov dej zoo solubility, thickening, bonding, tsim zaj duab xis, khaws cia noo noo thiab dispersion stability, ua ke nrog mature ntau lawm technology thiab kuj tsis tshua muaj nqi, nws yog tsuas yog siv nyob rau hauv detergents, roj thiab roj kev tshawb fawb thiab zaub mov additives thiab lwm yam teb. .
2. Kev lag luam kev loj hlob keeb kwm:
① Kev loj hlob keeb kwm ntawm non-ionic cellulose ether kev lag luam: Xyoo 1905, etherification ntawm cellulose tau pom thawj zaug hauv ntiaj teb, siv dimethyl sulfate thiab alkali-swelled cellulose rau methylation. Noionic cellulose ethers tau patented los ntawm Lilienfeld nyob rau hauv 1912, thiab Dreyfus (1914) thiab Leuchs (1920) tau dej-soluble thiab roj-soluble cellulose ethers, raws li. Hubert ua HEC hauv xyoo 1920. Thaum xyoo 1920, carboxymethylcellulose tau muag hauv lub teb chaws Yelemees. Los ntawm 1937 txog 1938, Tebchaws Asmeskas tau paub txog kev tsim khoom ntawm MC thiab HEC. Tom qab xyoo 1945, kev tsim cov cellulose ether nthuav dav hauv Western Europe, Tebchaws Meskas thiab Nyij Pooj. Tom qab ze li ntawm ib puas xyoo ntawm txoj kev loj hlob, non-ionic cellulose ether tau dhau los ua cov khoom siv tshuaj lom neeg feem ntau siv hauv ntiaj teb.
Tseem muaj qee qhov sib txawv ntawm cov teb chaws tsim thiab tsim cov teb chaws nyob rau hauv cov nqe lus ntawm cov txheej txheem ntau lawm thiab cov khoom siv teb ntawm non-ionic cellulose ethers. Nyob rau hauv cov nqe lus ntawm kev tsim technology, tsim lub teb chaws xws li Europe, North America, thiab Nyiv muaj kuj mature technology thiab technology, thiab mas tsim high-end daim ntawv thov cov khoom xws li txheej, zaub mov, thiab tshuaj; cov teb chaws tsim muaj kev thov loj rau CMC thiab HPMC, thiab cov cuab yeej siv tau nyuaj rau kev tsim cov khoom lag luam cellulose ether nrog cov kev xav tau tsawg yog cov khoom tseem ceeb, thiab cov khoom siv hauv tsev yog cov neeg siv khoom lag luam loj.
Nyob rau hauv cov nqe lus ntawm daim ntawv thov teb, tsim lub teb chaws xws li cov teb chaws Europe thiab lub tebchaws United States tau tsim ib tug kuj ua tiav thiab paub tab muaj kev lag luam saw rau lawv cov cellulose ether cov khoom vim muaj tej yam xws li thaum ntxov pib thiab muaj zog R & D lub zog, thiab cov downstream daim ntaub ntawv npog ntau yam ntawm lub kev lag luam hauv tebchaws; thaum tsim lub teb chaws Vim lub sij hawm luv luv ntawm kev lag luam cellulose ether, qhov kev thov ntawm cov khoom siv tsawg dua li ntawm cov teb chaws tsim. Txawm li cas los xij, nrog kev txhim kho me ntsis ntawm kev txhim kho kev lag luam ntawm cov teb chaws tsim, cov saw hlau muaj kev ua tau zoo, thiab cov peev txheej ntawm daim ntawv thov txuas ntxiv nthuav dav.
②HEC kev lag luam keeb kwm kev loj hlob: HEC yog ib qho tseem ceeb hydroxyalkyl cellulose thiab cov dej-soluble cellulose ether nrog cov ntim ntau lawm hauv ntiaj teb.
Kev siv cov kua ethylene oxide ua tus neeg sawv cev etherification los npaj HEC tau tsim cov txheej txheem tshiab rau kev tsim cov cellulose ether. Cov txheej txheem tseem ceeb thiab cov peev txheej tsim tau yog tsom rau hauv cov tuam txhab tshuaj loj hauv Tebchaws Europe, Amelikas, Nyiv, thiab Kaus Lim Qab Teb. HEC hauv kuv lub tebchaws tau tsim thawj zaug hauv xyoo 1977 los ntawm Wuxi Chemical Research Institute thiab Harbin Chemical No. product. Txawm li cas los xij, vim muaj qhov cuam tshuam xws li thev naus laus zis rov qab thiab cov khoom lag luam tsis zoo, nws ua tsis tau zoo los tsim kev sib tw nrog cov tuam txhab thoob ntiaj teb. Nyob rau hauv xyoo tas los no, cov tuam txhab tsim khoom hauv tsev xws li Yin Ying Cov Khoom Siv Tshiab tau maj mam tawg los ntawm kev teeb meem, kev tsim cov txheej txheem ua haujlwm zoo, tsim cov peev txheej ntau lawm rau cov khoom lag luam ruaj khov, thiab tau suav nrog cov peev txheej ntawm kev yuav los ntawm cov tuam txhab downstream, txuas ntxiv txhawb cov txheej txheem hauv tsev. hloov.
3. Cov ntsuas kev ua haujlwm tseem ceeb thiab cov txheej txheem kev npaj ntawm non-ionic cellulose ether:
(1) Lub ntsiab kev ua tau zoo ntawm non-ionic cellulose ether: lub ntsiab kev ua tau zoo ntawm non-ionic cellulose ether cov khoom yog qib ntawm kev hloov thiab viscosity, thiab lwm yam.
(2) Non-ionic cellulose ether npaj thev naus laus zis: Hauv cov txheej txheem ntawm cellulose ether, ob qho tib si raw cellulose thiab pib tsim cellulose ether nyob rau hauv ib lub xeev sib xyaw ua ke. Vim yog txoj kev nplawm, cov khoom sib piv thiab cov khoom siv raw, thiab lwm yam theoretically hais lus, cov cellulose ethers tau los ntawm cov tshuaj tiv thaiv heterogeneous yog txhua yam inhomogeneous, thiab muaj qhov sib txawv ntawm txoj hauj lwm, qhov ntau thiab cov khoom purity ntawm ether pawg, uas yog, tau txais. cellulose ethers yog nyob rau ntawm sib txawv cellulose macromolecular chains, Tus naj npawb thiab kev faib tawm ntawm kev hloov pauv ntawm cov piam thaj sib txawv ntawm pawg ntawm tib cellulose macromolecule thiab C (2), C (3) thiab C (6) ntawm txhua pawg cellulose nplhaib sib txawv. Yuav ua li cas los daws qhov teeb meem ntawm kev hloov pauv tsis sib xws yog tus yuam sij rau kev tswj hwm hauv cov txheej txheem ntawm cellulose ether.
Txhawm rau ua kom tiav, kev kho cov khoom siv raw, alkalization, etherification, refining ntxuav thiab lwm yam txheej txheem hauv cov txheej txheem ntawm cov khoom siv tsis-ionic cellulose ether tag nrho cov kev xav tau siab rau kev npaj technology, kev tswj cov txheej txheem thiab cov khoom siv ntau lawm; Nyob rau tib lub sijhawm, kev tsim khoom loj ntawm cov khoom lag luam zoo yuav tsum muaj kev paub dhau los thiab muaj peev xwm ua haujlwm tau zoo.
4. Kev soj ntsuam ntawm kev ua lag luam daim ntawv thov txheej xwm:
Tam sim no, HEC cov khoom siv feem ntau yog siv rau hauv cov txheej txheem txheej txheej, tshuaj lom neeg txhua hnub thiab kev tiv thaiv ib puag ncig, tab sis cov khoom no lawv tus kheej kuj tuaj yeem siv rau hauv ntau lwm yam xws li zaub mov, tshuaj, kev tshawb nrhiav roj thiab roj; MHEC cov khoom siv feem ntau yog siv hauv cov khoom siv hauv tsev.
(1)Txheej teb:
Txheej additives yog daim ntawv thov tseem ceeb tshaj plaws ntawm HEC cov khoom. Piv nrog rau lwm yam uas tsis yog-ionic cellulose ethers, HEC muaj cov txiaj ntsig zoo raws li cov txheej txheem ntxiv: Ua ntej, HEC muaj qhov ruaj khov ruaj khov, uas tuaj yeem txhim kho qhov thaiv ntawm cov enzymes lom ntawm cov piam thaj kom tswj cov viscosity stability, xyuas kom meej tias cov txheej txheem yuav tsis zoo. tshwm delamination tom qab lub sij hawm cia; Thib ob, HEC muaj qhov zoo solubility, HEC tuaj yeem yaj hauv dej kub lossis dej txias, thiab muaj qee lub sijhawm hydration ncua sij hawm thaum yaj hauv dej txias, thiab yuav tsis ua rau gel clustering, zoo dispersibility thiab solubility; Qhov thib peb, HEC muaj cov xim zoo nkauj thiab zoo miscibility nrog cov xim feem ntau, yog li cov xim npaj tau muaj xim zoo sib xws thiab ruaj khov.
(2)Kev tsim kho cov ntaub ntawv:
Txawm hais tias HEC tuaj yeem ua tau raws li qhov yuav tsum tau muaj ntawm cellulose ether additives hauv thaj chaw ntawm cov khoom siv hauv tsev, vim tias nws cov nqi npaj siab, thiab cov kev cai qis rau cov khoom siv thiab kev ua haujlwm ntawm mortar thiab putty piv nrog cov coatings, cov khoom siv hauv tsev feem ntau xaiv HPMC lossis MHEC. raws li lub ntsiab cellulose ether additives. Piv nrog HPMC, cov qauv tshuaj ntawm MHEC muaj ntau pawg hydrophilic, yog li nws ruaj khov dua ntawm qhov kub thiab txias, uas yog, nws muaj thermal stability zoo. Tsis tas li ntawd, piv nrog cov khoom siv hauv tsev qib HPMC, nws muaj qhov kub thiab txias, thiab nws cov dej tuav thiab adhesion muaj zog dua thaum siv hauv qhov kub thiab txias.
(3)Tshuaj lom neeg txhua hnub:
Cov cellulose ethers feem ntau siv hauv cov tshuaj niaj hnub yog CMC thiab HEC. Piv nrog CMC, HEC muaj qee qhov zoo hauv cohesiveness, hnyav tsis kam thiab ruaj khov. Piv txwv li, CMC tuaj yeem siv los ua cov nplaum rau cov khoom siv tshuaj lom neeg niaj hnub yam tsis muaj cov mis tshwj xeeb ntxiv. Txawm li cas los xij, anionic CMC yog rhiab heev rau high-concentration ions, uas yuav txo tau cov nplaum ua hauj lwm ntawm CMC, thiab kev siv CMC nyob rau hauv tshwj xeeb haumxeeb khoom siv niaj hnub tshuaj yog txwv. Siv HEC raws li tus binder txhim khu kev ua tau zoo ntawm cov binder tiv thaiv high-concentration ions, zoo heev txhim kho kev ruaj ntseg ntawm cov khoom siv tshuaj txhua hnub thiab ua kom lub sijhawm cia ntev.
(4)Environmental Protection field:
Tam sim no, HEC cov khoom lag luam feem ntau yog siv rau hauv cov nplaum thiab lwm yam khoom ntawm honeycomb ceramic carrier khoom. Honeycomb ceramic carrier feem ntau yog siv nyob rau hauv lub tso pa tom qab-kev kho mob ntawm sab hauv combustion xyaw xws li tsheb thiab ships, thiab plays lub luag hauj lwm ntawm cov pa pa kev kho mob kom tau raws li emission qauv.
5. Tam sim no kev ua lag luam nyob hauv tsev thiab txawv teb chaws:
(1)Txheej txheem cej luam ntawm lub ntiaj teb nonionic cellulose ether lag luam:
Los ntawm kev xav ntawm lub ntiaj teb no muaj peev xwm muab faib, 43% ntawm tag nrho lub ntiaj teb no cellulose ether ntau lawm nyob rau hauv 2018 yog los ntawm Asia (Tuam Tshoj suav rau 79% ntawm cov neeg Esxias ntau lawm), Western Europe accounted rau 36%, thiab North America accounted rau 8%. Los ntawm kev xav ntawm lub ntiaj teb no thov rau cellulose ether, lub ntiaj teb no noj cellulose ether nyob rau hauv 2018 yog hais txog 1.1 lab tons. Los ntawm 2018 txog 2023, kev noj cellulose ether yuav loj hlob ntawm qhov nruab nrab txhua xyoo ntawm 2.9%.
Ze li ntawm ib nrab ntawm tag nrho lub ntiaj teb cellulose ether noj yog ionic cellulose ( sawv cev los ntawm CMC), uas yog tsuas yog siv nyob rau hauv detergents, oilfield additives thiab zaub mov additives; kwv yees li ib feem peb yog non-ionic methyl cellulose thiab nws cov derivatives tshuaj (sawv cev los ntawm HPMC), thiab qhov seem ntawm ib feem yog hydroxyethyl cellulose thiab nws cov derivatives thiab lwm yam cellulose ethers. Kev loj hlob ntawm kev thov rau cov tsis-ionic cellulose ethers feem ntau yog tsav los ntawm kev siv hauv cov khoom siv hauv tsev, txheej, zaub mov, tshuaj, thiab tshuaj txhua hnub. Los ntawm qhov kev xav ntawm lub regional faib ntawm cov neeg siv khoom lag luam, cov lag luam Esxias yog lub lag luam loj tshaj plaws. Los ntawm 2014 txog 2019, qhov kev loj hlob txhua xyoo ntawm kev thov rau cellulose ether hauv Asia tau nce mus txog 8.24%. Ntawm lawv, qhov kev thov tseem ceeb hauv Asia yog los ntawm Tuam Tshoj, suav txog 23% ntawm tag nrho cov kev xav tau thoob ntiaj teb.
(2)Txheej txheem cej luam ntawm domestic non-ionic cellulose ether lag luam:
Hauv Suav teb, ionic cellulose ethers sawv cev los ntawm CMC tau tsim ua ntej, tsim cov txheej txheem ntau lawm thiab muaj peev xwm ntau lawm. Raws li IHS cov ntaub ntawv, Suav tuam txhab lag luam tau nyob ze li ib nrab ntawm lub ntiaj teb kev tsim khoom muaj peev xwm ntawm cov khoom siv CMC. Txoj kev loj hlob ntawm non-ionic cellulose ether pib lig nyob rau hauv kuv lub teb chaws, tab sis txoj kev loj hlob sai.
Tom qab xyoo ntawm txoj kev loj hlob, Tuam Tshoj txoj kev lag luam uas tsis yog-ionic cellulose ether tau ua tiav zoo. Xyoo 2021, lub peev xwm tsim cov khoom siv hauv tsev-qib HPMC yuav ncav cuag 117,600 tons, cov zis yuav yog 104,300 tons, thiab qhov muag ntim yuav yog 97,500 tons. Kev lag luam loj thiab cov txiaj ntsig hauv cheeb tsam tau txais txiaj ntsig los ntawm kev hloov pauv hauv tsev. Txawm li cas los xij, rau cov khoom lag luam HEC, vim qhov pib lig ntawm R & D thiab kev tsim khoom hauv kuv lub teb chaws, cov txheej txheem ntau lawm thiab cov txheej txheem tseem ceeb, cov peev txheej tsim khoom tam sim no, ntau lawm thiab muag ntim ntawm HEC cov khoom siv hauv tsev yog me me. Txawm li cas los xij, nyob rau hauv xyoo tas los no, raws li kev lag luam hauv tsev txuas ntxiv nce peev hauv kev tshawb fawb thiab kev tsim kho, txhim kho qib ntawm cov thev naus laus zis thiab nquag txhim kho cov neeg siv khoom qis, ntau lawm thiab muag tau loj hlob sai. Raws li cov ntaub ntawv los ntawm Tuam Tshoj Cellulose Industry Association, xyoo 2021, cov tuam txhab loj hauv tsev HEC (nrog rau hauv kev lag luam koom haum txheeb cais, tag nrho cov hom phiaj) muaj peev xwm tsim tau ntawm 19,000 tons, cov khoom tsim tawm ntawm 17,300 tons, thiab muag ntim ntawm 16,800. tons. Ntawm lawv, kev tsim khoom muaj peev xwm nce 72.73% xyoo-rau-xyoo piv nrog 2020, cov khoom tsim tawm tau nce 43.41% xyoo-rau-xyoo, thiab muag ntim tau nce 40.60% xyoo-rau-xyoo.
Raws li ib qho ntxiv, qhov muag ntim ntawm HEC muaj kev cuam tshuam loj heev los ntawm kev xav tau ntawm kev lag luam qis. Raws li daim ntawv thov tseem ceeb tshaj plaws ntawm HEC, kev lag luam txheej txheej muaj kev sib raug zoo nrog HEC kev lag luam ntawm cov khoom lag luam thiab kev faib khoom lag luam. Los ntawm qhov kev xav ntawm kev lag luam kev lag luam, cov coatings kev lag luam kev lag luam feem ntau yog muab faib rau hauv Jiangsu, Zhejiang thiab Shanghai nyob rau sab hnub tuaj Tuam Tshoj, Guangdong nyob rau sab qab teb Tuam Tshoj, sab qab teb ntug dej hiav txwv, thiab Sichuan nyob rau hauv Southwest Tuam Tshoj. Ntawm lawv, txheej txheej ntau lawm hauv Jiangsu, Zhejiang, Shanghai thiab Fujian suav txog li 32%, thiab hauv South Tuam Tshoj thiab Guangdong suav txog li 20%. 5 saum. Kev ua lag luam rau HEC cov khoom lag luam kuj tseem muaj nyob hauv Jiangsu, Zhejiang, Shanghai, Guangdong thiab Fujian. HEC tam sim no tsuas yog siv hauv cov txheej txheem vaj tsev, tab sis nws yog qhov tsim nyog rau txhua yam dej-raws li txheej txheej ntawm nws cov khoom tsim.
Xyoo 2021, tag nrho cov khoom tsim tawm txhua xyoo ntawm Tuam Tshoj cov txheej txheem yuav tsum yog kwv yees li 25.82 lab tons, thiab cov khoom tsim tawm ntawm cov txheej txheem vaj tsev thiab cov txheej txheem kev lag luam yuav yog 7.51 lab tons thiab 18.31 lab tons raws li 6. Cov txheej txheem dej raws li tam sim no suav txog li 90% ntawm cov txheej txheem vaj tsev, thiab kwv yees li 25%, nws tau kwv yees tias kuv lub teb chaws cov xim pleev xim rau hauv 2021 yuav muaj txog 11.3365 lab tons. Raws li kev xav, tus nqi ntawm HEC ntxiv rau cov xim pleev xim dej yog 0.1% rau 0.5%, suav nrog qhov nruab nrab ntawm 0.3%, piv txwv tias tag nrho cov xim pleev xim dej siv HEC ua ib qho ntxiv, lub teb chaws xav tau xim-qib HEC yog hais txog. 34,000 tons. Raws li tag nrho lub ntiaj teb txheej txheej ntau lawm ntawm 97.6 lab tons hauv 2020 (ntawm cov txheej txheem vaj tsev suav nrog 58.20% thiab cov txheej txheem kev lag luam suav txog 41.80%), qhov kev thov thoob ntiaj teb rau txheej qib HEC yog kwv yees li ntawm 184,000 tons.
Raws li cov ntsiab lus, tam sim no, kev lag luam sib koom ntawm txheej qib HEC ntawm cov tuam txhab tsim khoom hauv Suav teb tseem tsawg, thiab cov khoom lag luam hauv tsev feem ntau yog nyob hauv cov tuam txhab thoob ntiaj teb uas sawv cev los ntawm Ashland ntawm Tebchaws Meskas, thiab muaj qhov chaw loj rau hauv tsev. hloov. Nrog rau kev txhim kho ntawm HEC cov khoom zoo hauv tsev thiab kev nthuav dav ntawm lub peev xwm ntau lawm, nws yuav ntxiv kev sib tw nrog cov tuam txhab thoob ntiaj teb hauv cov dej ntws qis uas sawv cev los ntawm cov txheej txheem. Kev hloov pauv hauv tsev thiab kev sib tw ua lag luam thoob ntiaj teb yuav dhau los ua qhov kev txhim kho tseem ceeb ntawm kev lag luam no nyob rau qee lub sijhawm yav tom ntej.
Post lub sij hawm: Apr-01-2023