I-cellulose etherkuyinto cellulose yemvelo (ukotini elicwengekile kanye ukhuni uginindela, njll) njengoba izinto zokusetshenziswa, ngemva etherification ezihlukahlukene kokuphuma kokunye, iyona cellulose macromolecule hydroxyl hydrogen by ether iqembu ngokwengxenye noma ngokuphelele esikhundleni emva ukwakheka kwemikhiqizo, iyona derivatives ezansi komfula cellulose. I-Cellulose ingancibilika emanzini, ixube isixazululo se-alkali kanye ne-organic solvent ngemva kwe-etherification, futhi inezici ze-thermoplastic. I-cellulose ether ehlukahlukene, esetshenziswa kabanzi ekwakhiweni, kusimende, enamathela, imithi, ukudla, uphethiloli, amakhemikhali nsuku zonke, izindwangu, iphepha kanye izingxenye electronic kanye nezinye izimboni. Ngokuya ngenani lama-substituents angahlukaniswa abe yi-ether eyodwa ne-ether exubile, ngokuya nge-ionization ingahlukaniswa ibe ionic cellulose ether kanye ne-non-ionic cellulose ether. Njengamanje, inqubo yokukhiqiza umkhiqizo we-ionic cellulose ether ionic isivuthiwe, kulula ukuyenza futhi inezindleko eziphansi, izithiyo zezimboni eziphansi, ikakhulukazi ezisetshenziswa ezithasiselweni zokudla, izithasiselo zendwangu, amakhemikhali ansuku zonke neminye imikhakha, iyimikhiqizo eyinhloko yokukhiqiza emakethe.
Njengamanje, i-cellulose ether esezingeni eliphezulu emhlabeniCMC, HPMC, MC, HECnezinye eziningi,I-CMCokukhiphayo yiwona omkhulu kunayo yonke, ebalwa cishe ingxenye yomkhiqizo womhlaba wonke, kuyilapho i-HPMC ne-MC zombili zenza cishe u-33% wesidingo somhlaba wonke, i-HEC yenza cishe u-13% wezimakethe zomhlaba. Ukuphela kokusetshenziswa okubaluleke kakhulu kwe-carboxymethyl cellulose (CMC) okokuhlanza, okubalelwa ku-22% wesidingo semakethe esezansi nomfula, kanti eminye imikhiqizo isetshenziswa kakhulu ezintweni zokwakha, ukudla nemithi.
Ii. Uhlelo lokusebenza lwe-downstream
Esikhathini esidlule, ngenxa yesidingo esilinganiselwe sokuthuthukiswa kwe-cellulose ether kumakhemikhali ansuku zonke, imithi, ukudla, okokunamathela neminye imikhakha e-China, isidingo se-cellulose ether e-China sigxile emkhakheni wezinto zokwakha, kuze kube namuhla, imboni yezinto zokwakha isathatha ama-33% esidingo se-cellulose ether e-China. Futhi njenge-cellulose ether yaseChina emkhakheni wesidingo sezinto zokwakha sesigcwele, kumakhemikhali wansuku zonke, imithi, ukudla, ukumboza kanye neminye imikhakha yesidingo ikhula ngokushesha ngokuthuthukiswa kobuchwepheshe bokufaka isicelo. Isibonelo, eminyakeni yamuva nje, i-capsule yesitshalo ene-cellulose ether njengento eyinhloko eluhlaza, kanye nemikhiqizo evelayo eyenziwe ngenyama yokwenziwa nge-cellulose ether inamathemba abanzi esidingo kanye nendawo yokukhula.
Emkhakheni wezinto zokwakha, isibonelo, i-cellulose ether enokuqina, ukugcinwa kwamanzi, ukufingqa kancane kanye nezinye izici ezinhle kakhulu, ngakho-ke izinto zokwakha ibanga le-cellulose ether lisetshenziswa kabanzi ukuthuthukisa ukusebenza kwemikhiqizo yempahla yokwakha kuhlanganise nodaka oluxutshwe ngomumo (kuhlanganise nodaka olumanzi oluxubekile nodaka olomile oluxubile), ukukhiqizwa kwe-PVC resin, upende we-latex, ukuthuthukiswa okusheshayo kwe-putty yasemadolobheni, njll. imboni yezinto zokwakha, izinga lemishini yokwakha liyaqhubeka nokuba ngcono, futhi izidingo zemvelo zabathengi zezinto zokwakha ziya ngokuya ziba phezulu, okuholela esidingweni se-non-ionic cellulose ether emkhakheni wezinto zokwakha. Ngesikhathi soHlelo Lweminyaka Emihlanu Lweminyaka Eyi-13, i-China yasheshisa ukulungiswa kwezindawo eziwohlokayo kanye nezindlu eziwohlokayo emadolobheni, futhi yaqinisa ukwakhiwa kwengqalasizinda yasemadolobheni, okuhlanganisa nokusheshisa ukulungiswa kwezindawo eziwugwadule ezihlangene namadolobhana emadolobheni, kanye nokugqugquzela ngokuhlelekile ukulungiswa kwezindawo zokuhlala ezindala kanye nokulungiswa kwezindlu ezindala ezingasakhiwanga nezindlu ezingaqediwe. Engxenyeni yokuqala ka-2021, indawo yokuhlala eyizigidi ezingama-755.15 yaqalwa, ikhuphuke ngamaphesenti angama-5.5. Indawo eqediwe yezindlu ingu-364.81 million square metres, ikhuphuke ngo-25.7%. Ukubuyiselwa kabusha kwendawo eqediwe yezindlu ezithengiswayo kuzoqhuba isidingo esifanele emkhakheni wezinto zokwakha ze-cellulose ether.
3. Iphethini yokuncintisana yemakethe
I-China iyizwe lokukhiqiza i-cellulose ether yomhlaba wonke, esigabeni samanje sezinto zokwakha ezifuywayo ebangeni le-cellulose ether ngokuyisisekelo izuzwe kwasendaweni, i-Anxin Chemistry ehamba phambili yamabhizinisi emkhakheni we-cellulose ether, abanye abakhiqizi abakhulu basekhaya bahlanganisa iKima Chemical njll. Ngaphezu kwamakhemikhali e-Anxin angaphezu kwamathani ayizinkulungwane eziyishumi amabhizinisi, izinkulungwane zamathani amabhizinisi amancane okukhiqiza i-cellulose ether engeyona ionic, iningi lalawa mabhizinisi amancane akhiqiza izinto zokwakha ezijwayelekile zebanga le-cellulose ether, futhi awekho amandla okukhiqiza ukudla okusezingeni eliphezulu nemikhiqizo yemithi.
Okwesine, isimo se-cellulose ether sokungenisa kanye nokuthekelisa
Ngo-2020, ngenxa yobhadane lwaphesheya kwezilwandle oluholele ekwehleni kwamandla okukhiqiza amabhizinisi angaphandle, ukuthunyelwa kwe-cellulose ether yaseChina kubonise ukukhula okusheshayo, ngo-2020 ukufeza ukuthunyelwa kwe-cellulose ether amathani angama-77,272. Nakuba ivolumu yokuthekelisa ye-cellulose ether e-China ikhula ngokushesha, imikhiqizo yokuthekelisa ngokuyinhloko isekelwe ezintweni zokwakha i-cellulose ether, kuyilapho ivolumu yokuthekelisa ye-ether yezokwelapha ne-edible cellulose incane kakhulu, futhi inani elingeziwe lemikhiqizo yokuthekelisa liphansi. Njengamanje, umthamo wokuthekelisa we-cellulose ether e-China uphindwe kane kunomthamo wokungenisa, kodwa umthamo wokuthekelisa ungaphansi kokuphindwe kabili kunani lokungenisa. Emkhakheni wemikhiqizo ephezulu yasekhaya inqubo yokushintshwa kwe-cellulose ether yokuthekelisa iseyindawo enkulu yokuthuthukiswa.
Isikhathi sokuthumela: Apr-25-2024