Cellulose ether: cov khoom siv hluav taws xob sab saud muaj kev cuam tshuam ntau dua, thiab kev lag luam qis zuj zus tuaj.
Cellulose ether yog ib yam ntawm cov khoom siv ntuj tsim los ntawm polymer, uas muaj emulsification thiab raug tshem tawm cov yam ntxwv.Nyob rau hauv ntau yam, hydroxypropyl methyl cellulose ether uas yog HPMC yog lub siab tshaj plaws yield, feem ntau siv ib tug, nws ntau lawm yog nce sai heev.
Nyob rau hauv xyoo tas los no, tau txais txiaj ntsig los ntawm kev loj hlob ntawm kev lag luam hauv teb chaws, kev tsim cov cellulose ether ntawm peb lub teb chaws nce xyoo los ntawm xyoo.Nyob rau tib lub sij hawm, nrog rau kev loj hlob ntawm domestic science thiab technology, tus thawj yuav tsum tau import ib tug loj tus naj npawb ntawm high-end cellulose ether tam sim no maj mam paub localization, thiab cov export ntawm domestic cellulose ether yog nce.Cov ntaub ntawv qhia tau hais tias txij Lub Ib Hlis Ntuj txog Lub Kaum Ib Hlis 2020, Tuam Tshoj tau xa tawm 64,806 tons ntawm cellulose ether, nce 14.2% xyoo rau xyoo, siab dua tag nrho ntawm 2019.
Nyob rau hauv xyoo tas los no, tau txais txiaj ntsig los ntawm kev loj hlob ntawm kev lag luam hauv teb chaws, kev tsim cov cellulose ether ntawm peb lub teb chaws nce xyoo los ntawm xyoo.Nyob rau tib lub sij hawm, nrog rau kev loj hlob ntawm domestic science thiab technology, tus thawj yuav tsum tau import ib tug loj tus naj npawb ntawm high-end cellulose ether tam sim no maj mam paub localization, thiab cov export ntawm domestic cellulose ether yog nce.Cov ntaub ntawv qhia tau hais tias txij Lub Ib Hlis Ntuj txog Lub Kaum Ib Hlis 2020, Tuam Tshoj tau xa tawm 64,806 tons ntawm cellulose ether, nce 14.2% xyoo rau xyoo, siab dua tag nrho ntawm 2019.
Cellulose ether cuam tshuam los ntawm cov nqi paj rwb
Cov ntaub ntawv tseem ceeb rau cellulose ethers suav nrog cov khoom ua liaj ua teb thiab hav zoov, suav nrog cov paj rwb zoo, thiab cov khoom siv tshuaj, suav nrog propylene oxide.Cov khoom siv raw ntawm cov paj rwb refined yog paj rwb luv luv cashmere, thiab paj rwb luv luv cashmere yog tsim nyob rau hauv Shandong, Xinjiang, Hebei thiab Jiangsu.Lub hauv paus ntawm paj rwb fleece yog ntau heev thiab nyob rau hauv txaus txaus.
Paj rwb nyiaj rau ib tug loj feem nyob rau hauv kev lag luam qauv ntawm cov khoom ua liaj ua teb, thiab nws cov nqi yog cuam tshuam los ntawm tej yam ntuj tso tej yam kev mob thiab thoob ntiaj teb mov thiab kev thov.Ib yam li ntawd, propylene oxide, chloromethane thiab lwm yam khoom siv tshuaj kuj cuam tshuam los ntawm cov nqi roj av thoob ntiaj teb.Txij li thaum cov ntaub ntawv raw khoom rau ib qho loj ntawm cov qauv ntawm cellulose ether, qhov hloov pauv ntawm cov khoom siv raw khoom ncaj qha cuam tshuam rau tus nqi muag ntawm cellulose ether.
Txhawm rau tiv thaiv tus nqi siab, cov tuam txhab cellulose ether feem ntau hloov lub siab mus rau kev lag luam hauv qab, tab sis cov nyhuv hloov pauv cuam tshuam los ntawm kev nyuaj ntawm cov khoom siv, cov khoom sib txawv thiab qib ntawm cov khoom lag luam thiab tus nqi ntxiv.Feem ntau, cov lag luam uas muaj kev cuam tshuam kev lag luam siab, cov khoom lag luam nplua nuj thiab cov nqi ntxiv muaj txiaj ntsig zoo dua thiab yuav tswj hwm cov txiaj ntsig tau zoo.Txwv tsis pub, cov lag luam yuav tsum tau ntsib tus nqi siab dua.Tsis tas li ntawd, yog tias ib puag ncig sab nraud tsis ruaj khov thiab qhov ntau ntawm cov khoom hloov pauv loj, cov khoom siv raw khoom lag luam tau txaus siab xaiv cov neeg siv khoom qis nrog cov khoom loj loj thiab muaj zog muaj zog, thiaj li ua kom muaj txiaj ntsig kev lag luam raws sij hawm thiab txo kev pheej hmoo.Yog li ntawd, qhov no txwv txoj kev loj hlob ntawm me me cellulose ether cov lag luam rau ib qho twg.
Cellulose ether yog ib yam ntawm cov khoom siv ntuj tsim los ntawm polymer, uas muaj emulsification thiab raug tshem tawm cov yam ntxwv.Nyob rau hauv ntau yam, hydroxypropyl methyl cellulose ether uas yog HPMC yog lub siab tshaj plaws yield, feem ntau siv ib tug, nws ntau lawm yog nce sai heev.
Nrog kev nce qib ntawm kev tshawb fawb thiab thev naus laus zis tsis tu ncua, kev lag luam kev lag luam hauv qab tau loj hlob, thiab cov ntawv thov hauv qab yuav tsum tau nthuav dav tas li, thiab qhov kev thov qis qis yog tswj kev loj hlob ruaj khov.Hauv kev lag luam downstream qauv ntawm cellulose ether, cov khoom siv hauv tsev, roj extraction, zaub mov thiab lwm yam kev lag luam nyob hauv txoj haujlwm tseem ceeb.Ntawm lawv, cov khoom siv hauv tsev yog cov neeg siv khoom lag luam loj tshaj plaws, suav txog ntau dua 30%.
Kev tsim kho kev lag luam yog kev siv ntau tshaj plaws ntawm HPMC cov khoom
Hauv kev tsim kho kev lag luam, HPMC cov khoom ua si ib qho tseem ceeb daim ntawv cog lus, dej tuav thiab lwm yam teebmeem.Tom qab sib tov me me ntawm HPMC nrog cov cement mortar, viscosity, tensile thiab shear lub zog ntawm cov cement mortar, mortar thiab binder tuaj yeem nce ntxiv, txhawm rau txhim kho kev ua haujlwm ntawm cov khoom siv hauv tsev, txhim kho kev tsim kho thiab kev tsim kho kom zoo.Tsis tas li ntawd, HPMC tseem yog ib qho tseem ceeb retarder rau kev tsim khoom thiab kev thauj mus los ntawm cov pob zeb ua lag luam, uas ua lub luag haujlwm hauv kev kaw dej thiab txhim kho cov khoom rheological ntawm pob zeb.Tam sim no, HPMC yog qhov tseem ceeb tshaj plaws ntawm cov khoom siv cellulose ether siv los tsim cov khoom sib khi.
Kev lag luam hauv tsev yog lub hauv paus tseem ceeb ntawm kev lag luam ntawm peb lub teb chaws kev lag luam.Cov ntaub ntawv qhia tau hais tias thaj chaw tsim kho vaj tse tau nce los ntawm 7.08 billion square metres hauv xyoo 2010 txog 14.42 billion square metres hauv 2019, txhawb kev loj hlob ntawm cellulose ether kev lag luam.
Tag nrho cov boom ntawm kev lag luam vaj tsev khaws cia, thiab cheeb tsam ntawm kev tsim kho thiab muag khoom tau nce xyoo-rau-xyoo.Cov ntaub ntawv pej xeem qhia tau hais tias xyoo 2020, kev poob qis ib hlis ib xyoos rau xyoo tshiab hauv thaj chaw tsim kho tshiab ntawm kev lag luam vaj tsev nyob txuas ntxiv nqaim, nqis 1.87% xyoo rau xyoo, 2021 xav tias yuav txuas ntxiv kho cov qauv.Hauv thawj ob lub hlis ntawm lub xyoo no, qhov kev loj hlob ntawm kev lag luam vaj tse nyob hauv cheeb tsam tau rov qab mus rau 104.9%, qhov nce siab.
Roj drilling
Kev lag luam kev lag luam kev lag luam yog qhov cuam tshuam tshwj xeeb los ntawm kev nqis peev hauv ntiaj teb E&P, nrog kwv yees li 40% ntawm cov ntaub ntawv tshawb fawb thoob ntiaj teb tau mob siab rau cov kev pabcuam drilling engineering.
Thaum lub sij hawm cov roj drilling thiab ntau lawm, drilling kua ua lub luag haujlwm tseem ceeb hauv kev nqa thiab tshem tawm cov chips, ntxiv dag zog rau lub qhov phab ntsa thiab ntsuas qhov tsim kom muaj siab, txias thiab lubricating me ntsis, thiab hloov cov zog hydrodynamic.Yog li ntawd, nyob rau hauv cov roj drilling ua hauj lwm, nws yog ib qho tseem ceeb heev kom muaj cov av noo, viscosity, fluidity thiab lwm yam kev ntsuas ntawm drilling kua.Polyanionic cellulose, los yog PAC, tuaj yeem ua kom tuab, lubricate cov khoom, thiab hloov cov zog hydrodynamic.Vim lub complex geological tej yam kev mob ntawm cov roj cia cheeb tsam thiab qhov nyuaj ntawm drilling, muaj ib tug loj tus naj npawb ntawm PAC siv thov.
Pharmaceutical excipients kev lag luam
Non-ionic cellulose ethers yog dav siv nyob rau hauv kev lag luam kws tshuaj raws li kws tshuaj excipients, xws li thickeners, dispersants, emulsifiers thiab zaj duab xis qub.Nws yog siv rau zaj duab xis txheej thiab nplaum ntawm cov ntsiav tshuaj, thiab tseem tuaj yeem siv rau hauv kev ncua, qhov muag npaj, cov ntsiav tshuaj ntab thiab lwm yam.Vim tias qhov kev xav tau nruj dua ntawm cov purity thiab viscosity ntawm cov khoom siv tshuaj cellulose ether, cov txheej txheem tsim khoom yog qhov nyuaj thiab cov txheej txheem ntxuav ntau dua.Piv nrog rau lwm cov khoom lag luam cellulose ether, qhov kev sau nqi qis dua, cov nqi tsim khoom ntau dua, tab sis cov khoom lag luam ntxiv tus nqi kuj siab dua.Pharmaceutical excipients feem ntau yog siv rau hauv kev npaj tshuaj tshuaj, suav tshuaj patent, cov khoom siv roj ntsha thiab biochemical thiab lwm yam khoom siv tshuaj.
Vim tias kev lag luam tshuaj pabcuam cov khoom siv tau pib lig, tag nrho cov kev loj hlob theem qis tam sim no, kev lag luam mechanism yuav tsum tau txhim kho ntxiv.Ntawm cov khoom tsim tawm ntawm cov khoom siv tshuaj hauv tsev, cov txiaj ntsig ntawm cov khoom siv tshuaj kho mob hauv tsev muaj feem tsawg ntawm 2% -3%, uas yog qis dua li ntawm cov tshuaj txawv teb chaws (kwv yees li 15%).Nws tuaj yeem pom tias tseem muaj qhov chaw zoo rau kev txhim kho cov khoom siv tshuaj hauv tsev, uas yuav tsum tau ua kom muaj txiaj ntsig zoo rau kev loj hlob ntawm cov khoom lag luam cellulose ether.
Post lub sij hawm: Aug-31-2022