Udaka ngodaka oluselungiselelwe, inqobo nje uma i-ether ye-cellulose encane ingathuthukisa kakhulu ukusebenza ngodaka olumanzi, ingabonakala ukuthi i-cellulose ether iyisengezo esikhulu esithinta ukusebenza kodaka. "
Ukukhethwa kwezinhlobo ezahlukahlukene, ama-viscosities ahlukene, ama-degricle ahlukile, amazinga ahlukene okubonakala kanye nokungezwa kwezimpi ze-cellulose nakho kunemiphumela ehlukile ekuthuthukiseni ukusebenza kodaka owomile. Njengamanje, ama-masonry amaningi kanye nodaka oluphambayo banokusebenza okumpofu kokugcinwa kwamanzi, futhi ama-slurry amanzi azokwehlukanisa ngemuva kwemizuzu embalwa yokuma. Ngakho-ke kubaluleke kakhulu ukwengeza i-cellulose ether ku-cunmer ngosimende.
Ukugcinwa kwamanzi
Ukugcinwa kwamanzi kungukusebenza okubalulekile kwe-methyl cellulose ether, futhi futhi kungukusebenza okuhlanganiswe nabakhiqizi bakaDotara baseDotara basekhaya, ikakhulukazi labo abaseningizimu nezifunda eziphakeme, naka.
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.
I-viscosity, umthamo, izinga lokushisa elikhona kanye nokwakheka kwamangqamuzana kwe-cellulose ether kunethonya elikhulu ekusebenzeni kwayo kokugcina amanzi. Ngaphansi kwezimo ezifanayo, kukhula okukhulu kwe-cellulose ether, okungcono ukugcinwa kwamanzi; Lapho kuphakama umthamo, ukugcinwa kwamanzi kangcono. Imvamisa, inani elincane le-cellulose ether lingathuthukisa kakhulu ukugcinwa kwamanzi kodaka. Lapho umthamo ufinyelela ezithile lapho izinga lokugcinwa kwamanzi likhuphuka lapho kwenzeka, umkhuba wamazinga okugcina amanzi uyancipha; Lapho izinga lokushisa elizwakalayo likhuphuka, ukugcinwa kwamanzi kwe-cellulose ether kuvame ukwehla, kepha ezinye izifelu eziguquliwe zibuye zibe nokugcinwa kwamanzi ngaphansi kwezimo eziphakeme zokushisa; Ama-Fibers anamazinga aphansi okufaka esikhundleni se-vegan ether anokusebenza okungcono kokugcinwa kwamanzi.
I-Hydroxyl Group e-Cellose Ether Molekyuli kanye ne-athomu ye-oxygen embonini wamanzi zizohlangana ne-molecule yamanzi ukwakha isibopho se-hydrogen, ngaleyo ndlela edlala indima enhle ekugcinweni kwamanzi; I-molecule yamanzi kanye ne-cellulose ether molecular chain inflifffaction ivumela ama-molecule amanzi ukuze afake ingaphakathi le-cellulose ether macromolecular chain futhi aphansi kwamandla aqinile abophayo, lapho enza amanzi akhululekile, amanzi angenayo, kanye nokwenza ngcono ukugcinwa kwamanzi, I-Cellulose Ether ithuthukisa i-slurry entsha ye-slurry ezimboni zembongo, ukwakheka kwenethiwekhi ye-porous kanye nengcindezelo ye-osmotic noma izakhiwo ezakha amafilimu ze-cellulose ether zivimba ukubekeka kwamanzi.
ukuqina kanye ne-thixotropy
I-Cellulose Ether ifaka ngodaka olumanzi olunokubonakala okuhle kakhulu, okungakhulisa kakhulu amandla obugqi phakathi kodaka olumanzi kanye nongqimba lwesisekelo, futhi kuthuthukise ukusebenza kwe-anti-sagging yodaka. Isetshenziswa kabanzi kudaka oluphamba, udaka lokubopha izitini nohlelo lwangaphandle oludongeni lokufakwa kodonga. Umphumela wokuqina we-cellulose ether ungakhulisa nekhono lokulwa nokuphambukiswa kanye ne-homogeneity yezinto zokwakha ezisanda kuxutshwa, vimbela ukunxuswa kwezinto ezibonakalayo, ukuhlukaniswa nokopha, futhi kungasetshenziswa ukhonkolo we-fiber, ukhonkolo ongaphansi kokhonkolo, ukhonkolo ongaphansi kokhonkolo, ukhonkolo ongaphansi kokhonkolo, ukhonkolo ongaphansi kokhonkolo, ukhonkolo ongaphansi kokhonkolo, ukhonkolo ongaphansi kokhonkolo, ukhonkolo ongaphansi kokhonkolo, ukhonkolo ongaphansi kokhonkolo, ukhonkolo ongaphansi kokhonkolo, ukhonkolo ongaphansi kokhonkolo, ukhonkolo ongaphansi kokhonkolo, ukhonkolo ongaphansi kokhonkolo, ukhonkolo ongaphansi kokhonkolo, ukhonkolo ongaphansi kokhonkolo, ukhonkolo ongaphansi kokhonkolo, ukhonkolo ongaphansi kokhonkolo, ukhonkolo ongaphansi kokhonkolo, ukhonkolo ongaphansi kokhonkolo, ukhonkolo ongaphansi kokhonkolo, ukhonkolo ongaphansi kokhonkolo, ukhonkolo ongaphansi kokhonkolo, ukhonkolo ongaphansi kokhonkolo, ukhonkolo ongaphansi kokhonkolo, ukhonkolo ongaphansi kokhonkolo, ukhonkolo ongaphansi kokhonkolo, ukhonkolo ongaphansi kwamanzi kanye nokhonkolo ongaziphathi kahle.
Umphumela wokuqina we-cellulose ether ngezinto zokwakha amasimende uqhamuka ekubonakaleni kwe-cellulose ether perher solution. Ngaphansi kwezimo ezifanayo, ukukhuphuka kwe-viscosiose ether, okungcono kakhulu kwento esuselwe kukhukhile usimende, kepha uma i-viscosity iphakeme kakhulu, izothinta uketshezi nokusebenza kwezinto ezibonakalayo ). Ukhonkolo ozimisele wodaka nokhonkolo ozimisele ngokuzihlanganisa, ezidinga 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 esiphakeme se-cellule Izisombululo ezinamanzi ze-methyl cellulose zivame ukuba ne-pseudoplastic ne-non-twixotropic fluority ngaphansi kwezinga lokushisa le-gel, kepha khombisa izakhiwo ze-Newtonian flow ezindaweni eziphansi ze-shear. I-Pseudoplaltity inyuka ngesisindo se-molecular noma ukugxila kwe-cellulose ether, kungakhathalekile ukuthi uhlobo lokungena esikhundleni kanye nesilinganiso sokufaka esikhundleni. Ngakho-ke, i-cellulose i-Teshers yebanga elifanayo lokubonana, noma ngabe i-MC, i-HPMC, i-hemc, izohlala ikhombisa izakhiwo ezifanayo zembongo inqobo nje uma ukugxila nokushisa kugcinwa njalo. Ama-Gels ahlelekile akhiwa lapho izinga lokushisa liphakama, futhi ukuhamba kakhulu kwe-thixotropic kwenzeka.
Ukuhlushwa okuphezulu nokuvulekezwa okuphansi kuselula Le mpahla inzuzo enkulu kulungiswa kokulinganisa nokugcoba ekwakhiweni kokwakhiwa kodaka. Kudinga ukuchazwa lapha ukuthi ukukhuphuka kwendlela kaCellulose Ether, okungcono ukugcinwa kwamanzi, kepha kukhuphuka isisindo esiphakeme, kanye nokuncipha okuhlobene kwe-pullulose ether, kanye nokuncipha okuhambisanayo kwe-solubelity yayo, enomthelela omubi ekusebenzeni kokugxila kodaka nasekusebenzeni kokwakha.
Ukungena komoya
I-Celsulose Ether inomoya obonakalayo wokufaka umoya ngezinto zokwenziwa ngokosisi osuselwa kumafutha. Amaqembu e-cellulose anamaqembu ama-hydrophilic (amaqembu e-hydroxyl, amaqembu e-ether) namaqembu we-hydrophobic (amaqembu we-methyl, izindandatho ze-glucose), ngakho-ke kungumsebenzi ongenisa umoya. Umphumela ongenisa umoya we-cellulose ether uzokhiqiza umphumela we- "ball", ongathuthukisa ukusebenza kokusebenza kwezinto ezisanda kuxutshwa, njengokukhulisa ipulasitiki nokubushelwa kodaka ngesikhathi sokusebenza, okulungele ukusakazwa kodaka ; Kuzophinde kwandise ukuphuma kodaka, kunciphise izindleko zokukhiqiza zodaka; Kepha kuzonyusa i-porolity yezinto ezilukhuni futhi kunciphise izakhiwo zayo zemishini ezinjengamandla kanye ne-elastic modulus.
Njengomuntu osontekile, i-cellulose ether ibuye ibe nomthelela omanzi noma othambisiwe ku-cement izinhlayiya, okukhulisa uketshezi lwezinto zokwenziwa kosimende kanye nomphumela wayo wokufaka umoya, kepha umphumela wayo wokuqina uzonciphisa ubisi. Umphumela we-fluity yinhlanganisela yeplastiki yepulasitiki nokuqina. Ngokuvamile, lapho okuqukethwe kwe-cellulose ether kuphansi kakhulu, ukusebenza okuyinhloko kuwukuhlelwa ngopulasitiki noma ukuncishiswa kwamanzi; Lapho okuqukethwe kuphezulu, umphumela wokuqina we-cellulose ether ukhuphuka ngokushesha, futhi umphumela waso wokungena komoya uvame ukugcwala. Ngakho-ke kukhombisa njengomphumela wokuqina noma ukwanda kwesidingo samanzi.
ukuhliswa
I-Cellulose Ether izokwandisa isikhathi sokufaka usimende noma udaka, futhi ukubambezela i-hydration kinetics ka usimende, okunenzuzo ukuthuthukisa isikhathi sokusebenza sezinto zokwakha ezisanda kuxutshwa, uthuthukise ukuvumelana kokhonkolo ngokuhamba kwesikhathi, kepha kwangathi kungenzeka futhi kubangele ukubambezela inqubekela phambili yokwakha.
Isikhathi sePosi: FEB-24-2023