Indima ebalulekile ye-cellulose ether ngodaka

I-Cellulose Ether ingathuthukisa kakhulu ukusebenza ngodaka olumanzi, futhi isengezo esikhulu esithinta ukusebenza kodaka. Ukukhetha okunengqondo kwezithambekela ze-cellulose yezinhlobo ezahlukahlukene, ama-viscosities ahlukene, ama-degree ahlukile wezinhlayiya, ama-degree ahlukene wokubonakala kanye namanani angeziwe azoba nomthelela omuhle ekuthuthukisweni koMuder oQinisekayo. Njengamanje, ama-masonry amaningi kanye nodaka oluphambayo banokusebenza okumpofu kokugcinwa kwamanzi, futhi ama-slurry amanzi azokwehlukanisa ngemuva kwemizuzu embalwa yokuma. Ukugcinwa kwamanzi kungukusebenza okubalulekile kwe-methyl cellulose ether, futhi futhi kungukusebenza okuhlanganiswe nabakhiqizi bakaDotara baseDotara basekhaya, ikakhulukazi labo abaseningizimu nezifunda eziphakeme, naka. Izici ezithinta umphumela wokugcinwa kwamanzi we-powder eyomile afaka inani lokungezelela, ukubonakala, ukubusa kwezinhlayiya, kanye nokushisa kwendawo yokusebenzisa.

Ukugcinwa kwamanzi kwe-cellulose ether

Ekwenziweni kwezinto zokwakha, ikakhulukazi udaka olomile lwempuphu, i-ether ye-cellulose idlala indima engenakufinyeleleka, ikakhulukazi ekukhiqizweni kodaka olukhethekile (udaka olushintshiwe), kuyinto ebaluleke kakhulu futhi ebalulekile. Indima ebalulekile ye-cellule cellulose ether in gunda ikakhulukazi inezici ezintathu, enye ingumthamo omuhle kakhulu wokugcina amanzi, enye ithonya ekuguquguqukeni naseThixotropy lodaka, kanti okwesithathu kungukusebenzisana nosimende. Ukutholwa kokugcinwa kwamanzi kwe-cellulose ether kuncike ekufakweni kwamanzi kwesendlalelo sesisekelo, ukwakheka kodaka, ukushuba kongqimba lwesidakamizwa, ukufunwa kwamanzi ngodaka, kanye nesikhathi sokubeka izinto ezibonakalayo. Ukugcinwa kwamanzi kwe-cellulose ether ngokwako kuvela ku-solubity kanye nokuwohloka komzimba kwe-cellulose ether uqobo. Njengoba sonke sazi, yize i-cellulose molecular chain iqukethe inani elikhulu lamaqembu ah ama-oh ah, ayincibiliki emanzini, ngoba isakhiwo se-cellulose sine-crystallity ephezulu. Ikhono le-hydration lamaqembu we-hydroxyl ilodwa akwanele ukumboza izibopho eziqinile ze-hydrogen kanye ne-van der Waals amabutho phakathi kwama-molecule. Ngakho-ke, kudumba kuphela kepha kungancibiliki emanzini. Lapho kungeniswa esikhundleni esibangeni lamangqamuzana, hhayi nje kuphela ukuthi okufakwayo kubhubhise i-hydrogen chain, kodwa futhi nesibopho se-hydrogen sibhujiswa ngenxa yokwehla kwamaketanga aphansi phakathi kwamaketanga aphansi. Okukhudlwana, kukhudlwana ibanga phakathi kwama-molecule. Okukhulu ibanga. Uma kwenzeka kuba nomphumela wokubhubhisa ama-hydrogen bond, i-cellulose ether iba ukuncibilika kwamanzi ngemuva kokuthi isixazululo se-cellulose sinwebeka futhi kwakha isixazululo sokulungiselela. Lapho izinga lokushisa likhuphuka, i-hydrate ye-polymer yenza buthaka, amanzi phakathi kwamaketanga axoshwa. Lapho umphumela we-dehydration wanele, ama-molecule aqala ukuhlanganisa, akha i-gel yenethiwekhi enezinhlangothi ezintathu bese esongelwa.

Ngokuvamile ukukhuluma, ukukhuphuka okuphezulu, kungcono ukugcinwa kwamanzi. Kodwa-ke, ukukhuphuka kwesisindo kanye nesisindo esiphakeme, ukwehla okuhambisanayo kwe-solubelity yayo kuzoba nomthelela ongemuhle emandleni nasekusebenzeni kokwakha kodaka. Lapho kuphakama i-viscosity, kusobala kakhulu umphumela wokuqina kudaka, kepha akayona ngokuqondile. Lapho esekhuphuka i-viscosity, i-viscous mores owesimende izoba khona, okungukuthi, ngesikhathi sokwakha, kubonakaliswa njengokunamathela ku-scraper kanye nokunamathela okuphezulu kuya engxenyeni engezansi. Kepha akusizi ukwandisa amandla wesakhiwo sodaka olumanzi uqobo. Ngesikhathi sokwakha, ukusebenza kwe-anti-sag akubonakali. Ngokuphambene nalokho, ukubonakala okuphakathi nendawo okuphansi kepha okulungiselelwe i-methyl cellulose kanye nokusebenza okuhle kakhulu ekuthuthukiseni amandla wesakhiwo sodaka lwamanzi.

Ukuqina kanye ne-thixotropy ye-cellulose ether

Kukhona nobudlelwano obuhle obuqondile phakathi kokuvumelana kokufana kukakhonkolo kanye nomthamo we-cellulose ether. I-Cellulose Ether ingakhulisa kakhulu ukubonana kodaka. Okukhudlwana umthamo, umphumela osobala. Isixazululo esiphakeme se-cellule

Ukuqina kuya ngezinga le-polymerization ye-cellulose ether, okuhlushwa izixazululo, izinga lokushisa, izinga lokushisa kanye nezinye izimo. Impahla ecebile yesisombululo ihlukile ku-ALKYL Cellulose kanye nama-derivatives alo aguquliwe. Izakhiwo ze-gelation zihlobene nezinga lokufaka esikhundleni, ukugxilisa izixazululo kanye nezithasiselo. Nge-Hydroxyalkyl Decivatives eguquliwe, izakhiwo ze-gel nazo zihlobene neziqu zokuguqulwa kwe-hydroxyalkyl. Ukuze uthole ukubonakala okuphansi kwe-MC ne-HPMC, isixazululo esingu-10% -15% singalungiswa, i-medium viveku inc kanye ne-HPMC singalungiswa isixazululo esingu-5% -10%, futhi kuvame ukuhlukaniswa kwesixazululo se-cellulose futhi kuvame ukubalwa yisixazululo esingu-1% -2%. Isisindo esiphakeme se-molecular celvulosise ether sisebenza kahle kakhulu. Esixazululweni sokuhlushwa esifanayo, ama-polymers anezinsimbi ezihlukile zamangqamuzana ane -yize zibonakale ama-viscosities. Degree ephezulu. I-Viscosity Target ingatholakala kuphela ngokungeza inani elikhulu le-molecular isisindo se-cellulose ether. I-viscosity yayo inokuncika okuncane kwezinga le-shear, futhi i-viscosity ephezulu ifinyelela ekuboniseni okuqondiwe, futhi inani lentengo elidingekayo lincane, futhi i-viscoty incike ekusebenzeni kahle. Ngakho-ke, ukufeza ukungaguquguquki okuthile, inani elithile le-cellulose ether (ukugxila kwesixazululo) nesixazululo kufanele kuqinisekiswe. Izinga lokushisa le-gel lesixazululo libuye linciphise ngokuqondile ngokwanda kokuqoqwa kwesixazululo, nama-gel ama-gels ekushiseni kwekamelo ngemuva kokufinyelela kokuhlushwa okuthile. Ukuhlushwa kwama-gelling kwe-HPMC kuphakeme kakhulu emazingeni okushisa asekamelweni.

Ukubuyiselwa emuva kwe-cellulose ether

Umsebenzi wesithathu we-cellulose ether ukubambezela inqubo ye-hydration ka usimende. I-CelluleOse ether ifaka ngodaka ngezakhiwo ezahlukahlukene ezizuzisayo, futhi iphinde inciphise ukushisa kwe-hydration kokuqala kosimende nokubambezeleka kwenqubo enamandla kasimende. Lokhu akuthandeki ukusetshenziswa kodaka ezindaweni ezibandayo. Lo mphumela wokubuyiselwa emuva ubangelwa 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 libambezele inqubo ye-hydration. Lapho kukhuphuka ukugcwala kwe-cellulose ether ezintweni ezimbiwe yi-mineral gel, okushiwo ngokwengeziwe umphumela wokubambezeleka kwe-hydration. I-Cellulose eTR ayigcini ngokubambezeleka kokuhleleka, kepha futhi ibambezeleka futhi inqubo enzima yohlelo lokugcina usimende. Umphumela wokugcina kabusha we-cellulose ether awunawo kuphela ukugxila kwawo kuhlelo lwe-gel lwamaminerali, kodwa futhi nasesakhiweni samakhemikhali. Iphakeme izinga le-methylation ye-hemc, ngcono umphumela wokubuyisa we-cellulose ether. Isilinganiso sokufakwa esikhundleni se-hydrophilic ekungeneleleni kwamanzi umphumela umphumela wokubuyisa unamandla. Kodwa-ke, ukubonakala kwe-cellulose ether kunomthelela omncane kuma-kinetics we-cement hydration.

E-pular, i-ether ye-cellulose idlala indima yokugcinwa kwamanzi, ukuqina, ukubambezela amandla kasimende we-hydration, kanye nokwenza ngcono ukusebenza kokwakha. Umthamo omuhle wokugcina amanzi wenza i-perment hydration ephelele ngokwengeziwe, ingathuthukisa ukubonwa okumanzi kodaka olumanzi, yandisa amandla eBonding oDinga, bese ulungisa isikhathi. Ukungeza i-cellulose ether ku-mechan fafaza udaka kungathuthukisa ukufafaza noma ukupompa ukusebenza kanye namandla enhlaka ngodaka. Ngakho-ke, i-cellulose ether iyasetshenziswa kabanzi njengezengezo ezibalulekile ku-lyried udaka