Sibutsetelo: Kubizwa ngokuthi njenge-HPMC, emhlophe noma emusha emhlophe noma emhlophe-emhlophe. Kunezinhlobo eziningi ze-cellulose futhi ezisetshenziswa kabanzi, kepha ikakhulukazi sithintana namakhasimende embonini yezinto zokwakha i-Dry Powder wokwakha. Iselula evame kakhulu ibhekisa kwi-Hypromellose.
Inqubo yokukhiqiza: Izinto zokusetshenziswa eziphambili ze-HPMC: ukotini ocwengile, i-methyl chloride, ezinye izinto ezisetshenziswayo zifaka i-flake alkali, i-acid, i-alylide, njll, i-sopropanol, njll Ihora, cindezela, ugibeze i-cellulose, futhi ukhula kahle iminyaka engu-35 ①, ukuze isilinganiso esiphakathi se-polymerization ye-alkali fiber engaphakathi kwebanga elidingekayo. Faka imicu ye-alkali ku-etherization kettle, engeza i-propelene oxide ne-methyl chloride futhi, futhi uthele ku-50-80 ° C amahora angama-5, ngokucindezela okukhulu okungama-1.8 MPA acishe abe ngu-1.8 MPA. Ngemuva kwalokho engeza inani elifanele le-hydrochloric acid ne-acid oxalic emanzini ashisayo ku-90 ° C ukugeza okuqukethwe ukwandisa ivolumu. Dohydrate nge-centrifuge. Geza kuze kungathathi hlangothi, futhi lapho umswakama okuqukethwe okuqukethwe kungaphansi kwama-60%, womisa ngokugeleza komoya okushisayo ngo-130 ° C kuya ngaphansi kwama-5%. Umsebenzi: Ukugcinwa kwamanzi, ukuqina, i-twixotropic anti-sag, ukukhiqizwa komoya, ukubekezelela ukubuyisa.
Ukugcinwa kwamanzi: Ukugcinwa kwamanzi impahla ebaluleke kakhulu ye-cellulose ether! Ekwenziweni kukaPutty Gypsum ngodaka nezinye izinto, uhlelo lokusebenza lwe-cellulose ether lubalulekile. Ukugcinwa kwamanzi okuphezulu kungasabela ngokuphelele usimende nomlobi we-calcium gypsum (okuthe xaxa ukusabela, amandla amakhulu). Ngaphansi kwezimo ezifanayo, ukukhuphuka kwendlela ye-cellulose ether, okungcono ukugcinwa kwamanzi (igebe elingaphezulu kuka-100 000 kwento lincishisiwe); Lapho ephakeme umthamo, ukugcinwa kwamanzi kangcono, imvamisa inani elincane le-cellulose ether lingathuthukisa kakhulu ukusebenza kodaka. Izinga lokugcina amanzi, lapho okuqukethwe kufinyelela ezingeni elithile, ukuthambekela kokukhula kwezinga lokugcina amanzi lihamba kancane; Izinga lokugcina amanzi le-cellulose ether livame ukwehla lapho izinga lokushisa elikhona likhuphuka, kepha ezinye izifelu eziphakeme ze-cellulose zibuye zisebenze kangcono ngaphansi kwezimo zokushisa eziphakeme. Ukugcinwa kwamanzi. I-Interdiffalsion phakathi kwama-molecule amanzi kanye namaketanga ama-cellulose ether ama-molecule anika amandla ama-molecule amanzi i-cellulose ether macromolecur
Ukuqina, i-Thixotropic kanye ne-anti-sag: ifaka ukubonana okuhle kakhulu ku-malet data! Kungakhuphula kakhulu ukunamathela phakathi kodaka olumanzi kanye nongqimba lwesisekelo, futhi kuthuthukise ukusebenza okulwa nodaka. Umphumela wokuqina we-cellulose iziphathamandla futhi unyusa ukumelana nokuphikisana nokuvinjwa kwezinto ezisanda kuxutshwa, ukuvimbela ukunhlawulelwa kwezinto ezibonakalayo, ukuhlukaniswa nokopha. Umphumela wokuqina we-cellulose afers ngezinto zokwenziwa ngosimende ezisuselwa kusika kasimende uvela ekubonakaleni kwe-cellulose ether solutions. Ngaphansi kwezimo ezifanayo, ukukhuphuka kwendlela ye-cellulose ether, okungcono kakhulu kwento esetshenzisiwe ye-celment esekwe, kepha uma i-viscosity inkulu kakhulu, izothinta uketshezi nokusebenza kwezinto ezibonakalayo (njenge-batch enamathisela scraper). Ukhandla). Ukhonkolo ozenzelayo wokuzilungiselela nokhonkolo ozimizayo odinga ukufutheka okuphezulu kudinga ukubonakala okuphansi kwe-cellulose ether. Ngaphezu kwalokho, umphumela wokuqina we-cellulose ether uzokwandisa ukufunwa kwamanzi kwezinto zokwakha amasimende futhi wandise isivuno sodaka. Isixazululo esiphezulu se-cellulose ether aquod sixazululo sine-Thixotropy ephezulu, okubuye kube yisici esikhulu se-cellulose ether. Izisombululo ezinamanzi ze-cellulose ngokuvamile zinezindawo zokugeleza ze-pseudoplastic, ezingezona ze-twixotropic ngaphansi kwezinga lokushisa le-gel, kepha izakhiwo ze-Newtonia ezigeleza ngamanani aphansi. I-Pseudoplaltity inyuka ngokwengeziwe isisindo se-molecular noma ukugxila kwe-cellulose ether. Ama-Gels ahlelekile akhiwa lapho izinga lokushisa lenyuka, futhi ukuhamba okuphezulu kwe-Thixotropic kwenzeka. I-Cellulose i-Teshers enokugxila okuphezulu kanye ne-viscosity ephansi ekhombisa i-thixotropy ngisho nangaphansi kwe-gel lokushisa. Le mpahla inzuzo enkulu ekwakhiweni kokwakha udaka ukuze kuguqulwe ukuvelela kanye ne-sag. Kumele kuqashelwe lapha ukuthi ukukhuphuka kwendlela ye-cellulose ether, okungcono ukugcinwa kwamanzi, kepha kukhuphuka kakhulu isisindo esilinganiselwe se-cellulose ether, kanye nokuncipha okuhambisanayo kwe-solubelity yayo, enokuncipha umthelela ekugxileni kodaka nasekusebenzeni.
Imbangela: I-CelLose Ether inomphumela obonakalayo wokufaka umoya ngezinto zokwenziwa ezisuselwa kumasipala. I-Cellulose Ether ineqembu le-hydrophilic (iqembu le-hydroxyl, iqembu le-ether) neqembu le-hydrophobic (iqembu le-methyl, indandatho ye-glucose), i-surving, futhi ngaleyo ndlela inomphumela wokungena komoya. Umphumela ongenisa umoya we-cellulose ether uzokhiqiza umphumela we- "ball", ongathuthukisa ukusebenza kokusebenza kwezinto ezisanda kuxutshwa, njengokukhulisa ipulasitiki nokubushelwa kodaka ngesikhathi sokusebenza, okuzuzisa ukuvezwa kodaka ; Kuzokhulisa futhi ukuphuma kodaka. , ukunciphisa izindleko zokukhiqizwa ngodaka; Kepha kuzonyusa i-porolity yezinto ezilukhuni futhi kunciphise izakhiwo zayo zemishini ezinjengamandla kanye ne-elastic modulus. Njengomuntu osontekile, i-cellulose ether futhi inomthelela omanzi noma othambisiyo kwizinhlayiya zokwenza usimende, okuhambisana nomphumela wayo wokungenisa umoya kwandisa uketshezi lwezinto zokwenziwa kokhonkolo, kepha umphumela wayo wokuqina uzonciphisa uketshezi. Umphumela wokugeleza kuyinhlanganisela yemiphumela yokuqina. Lapho okuqukethwe kwe-cellulose ether kuphansi kakhulu, kubonakaliswa ikakhulukazi njengomphumela weplastiki noma wokunciphisa amanzi; Lapho okuqukethwe kuphakeme, umphumela wokuqina we-cellulose ether uyanda ngokushesha, futhi umphumela waso wokufaka umoya uvame ukugcwala, ngakho-ke ukusebenza kuyanda. Umphumela wokuqina noma ukuncipha kwamanzi.
Ukusetha kabusha: I-CelLose Ether ingabambezela inqubo ye-hydration ka usimende. I-Cellulose Lethars Ender the Gutar enezinto ezahlukahlukene ezizuzisayo, futhi futhi yehlisa ukukhishwa kokushisa kwe-hydration kokuqala kosimende nokubambezela inqubo yeKinetic ye-Hydration ye-CEAND. Lokhu akuthandeki ukusetshenziswa kodaka ezindaweni ezibandayo. Lokhu kubuyiselwa emuva kubangelwa yi-adsorption of cellulose ether molecule emikhiqizweni ye-hydration efana ne-CSH ne-CA (oh) 2. Ngenxa yokwanda kokubonakala kwesisombululo se-pore, i-cellulose ether inciphisa ukuhamba kwama-ion kwikhambi, ngaleyo ndlela kubambezele inqubo ye-hydration. Lapho kukhuphuka ukugcwala kwe-cellulose ether ezintweni ezimbiwe yi-mineral gel, okushiwo ngokwengeziwe umphumela wokubambezeleka kwe-hydration. I-Cellulose Afers ayigcini ngokubuyisa izilungiselelo, kodwa futhi ibuye futhi ibeke kabusha inqubo enzima yohlelo lokugcina usimende. Umphumela wokubuyiselwa emuva we-cellulose ether awunawo kuphela ukugxila kwawo kuhlelo lwe-gel lwamaminerali, kodwa futhi nasesakhiweni samakhemikhali. Iphakeme izinga le-methylation ye-hemc, okungcono umphumela wokubuyiselwa emuva we-cellulose ether. Umphumela wokubuyiselwa emuva unamandla. Kodwa-ke, ukubonakala kwe-cellulose ether kungumthelela omncane kwi-hydration kinetics kasimende. Ngokukhuphuka kokuqukethwe kwe-cellulose ether, isikhathi sokubeka udaka sandisa kakhulu. Kunokuhlobana okuhle kwe-nonlinear phakathi nesikhathi sokuqala sokusetha kodaka nokuqukethwe kwe-cellulose ether, futhi isikhathi sokugcina se-linear sinokuhlobana okuhle nokuqukethwe kwe-cellulose ether. Singalawula isikhathi sokusebenza sodaka ngokushintsha okuqukethwe kwe-cellulose ether. Emkhiqizweni, idlala indima yokugcinwa kwamanzi, ukuqina, ukubambezela amandla okosusi we-hydration, kanye nokwenza ngcono ukusebenza kokwakha. Umthamo omuhle wokugcina amanzi wenza usimende we-gypsum ash calcium usabela kabanzi ngokuphelele, kukhulisa kakhulu ukubonakala okumanzi, kuthuthukisa amandla ebhondi kadaka, futhi ngasikhathi sinye kungathuthukisa amandla ashukumisayo namandla okusizakala kanye nokusebenza kahle. Isikhathi esiguqukayo. Kuthuthukisa isifutho noma ukuncipha kodaka, kanye namandla enhlaka. Enqubweni yangempela yokufaka isicelo, kuyadingeka ukuthola uhlobo, i-viscosity, nenani leselula ngokuya ngemikhiqizo ehlukene, imikhuba yokwakha kanye nemvelo.
Isikhathi Seposi: Nov-15-2022