Ku-putty, i-samente mortar kanye ne-slurry esekelwe ku-gypsum,I-HPMCI-hydroxypropyl methylcellulose ether idlala indima yokugcina amanzi kanye nokuqina, futhi ingathuthukisa ngempumelelo ukumelana nokunamathela kanye nokuwa kwe-slurry. Izici ezifana nokushisa komoya, izinga lokushisa kanye nesivinini sokucindezela komoya kuzothinta izinga lokuguquguquka kwamanzi emikhiqizweni esekwe ku-putty, i-cement mortar kanye ne-gypsum. Ngakho-ke, ezinkathini ezahlukene, kunomehluko othile emphumeleni wokugcina amanzi wemikhiqizo enenani elifanayo le-HPMC elingeziwe. Ekwakhiweni okuthile, umphumela wokugcina amanzi we-slurry ungalungiswa ngokwandisa noma ukunciphisa inani le-HPMC elingeziwe.
Ukugcinwa kwamanzi kwe-methyl cellulose ether ngaphansi kwezimo zokushisa okuphezulu kuyinkomba ebalulekile yokuhlukanisa ikhwalithi ye-methyl cellulose ether. Imikhiqizo emihle kakhulu yochungechunge lwe-HPMC ingaxazulula ngempumelelo inkinga yokugcinwa kwamanzi ngaphansi kokushisa okuphezulu. Ezinkathini zokushisa okuphezulu, ikakhulukazi ezindaweni ezishisayo nezomile kanye nokwakhiwa okunezingqimba ezincane ohlangothini olunelanga, i-HPMC esezingeni eliphezulu iyadingeka ukuthuthukisa ukugcinwa kwamanzi kwe-slurry. I-HPMC esezingeni eliphezulu ingaguqula amanzi akhululekile ku-mortar abe ngamanzi aboshwe, ngaleyo ndlela ilawule ngempumelelo ukuhwamuka kwamanzi okubangelwa yisimo sezulu sokushisa okuphezulu futhi ifinyelele ukugcinwa kwamanzi aphezulu.
I-methyl cellulose esezingeni eliphezulu ingasakazwa ngokulinganayo nangokuphumelelayo ku-cement mortar kanye nemikhiqizo esekelwe ku-gypsum, bese igoqa zonke izinhlayiya eziqinile, bese yakha ifilimu yokumanzisa, futhi amanzi azokhishwa kancane kancane isikhathi eside. Kwenzeka ukusabela komswakama, ngaleyo ndlela kuqinisekiswe amandla okubopha kanye namandla okucindezela kwezinto. Ngakho-ke, ekwakheni kwehlobo lokushisa eliphezulu, ukuze kufezwe umphumela wokugcina amanzi, kuyadingeka ukwengeza imikhiqizo ye-HPMC esezingeni eliphezulu ngobuningi obanele ngokwefomula. Uma kusetshenziswa i-HPMC ehlanganisiwe, kuzokwenzeka umswakama onganele, amandla ancishisiwe, ukuqhekeka, kanye nezikhala ngenxa yokomisa ngokweqile. Izinkinga zekhwalithi ezifana nezigubhu nokuchitheka nazo zandisa ubunzima bokwakha kwabasebenzi. Njengoba izinga lokushisa lehla, inani le-HPMC elingeziwe lingancishiswa kancane kancane, futhi umphumela ofanayo wokugcina amanzi ungafinyelelwa.
Inqubo yokusabela ilawula ngokunembile ukukhiqizwaI-HPMC, futhi ukushintshwa kwayo kuphelele futhi ukufana kwayo kuhle kakhulu. Isixazululo sayo samanzi sicacile futhi sisobala, sinemicu embalwa yamahhala. Ukuhambisana nempuphu yerabha, usimende, ilayisi nezinye izinto eziyinhloko kunamandla kakhulu, okungenza izinto eziyinhloko zisebenze kahle kakhulu. Kodwa-ke, i-HPMC enempendulo embi inemicu eminingi yamahhala, ukusatshalaliswa okungalingani kwezinto ezisetshenziswayo, ukugcinwa kwamanzi okubi kanye nezinye izakhiwo, okuholela ekuqhekekeni kwamanzi amaningi esimweni sezulu esishisa kakhulu. Kodwa-ke, lokho okubizwa ngokuthi i-HPMC (uhlobo lwe-compound) olunokungcola okuningi kunzima ukuhambisana, ngakho-ke ukugcinwa kwamanzi kanye nezinye izakhiwo kubi nakakhulu. Uma kusetshenziswa i-HPMC esezingeni eliphansi, izinkinga ezifana namandla aphansi okusanhlamvu, isikhathi esifushane sokuvula, ukuqhuma, ukuqhekeka, ukugoba kanye nokuchitheka kuzobangelwa, okuzokwandisa ubunzima bokwakhiwa futhi kunciphise kakhulu ikhwalithi yesakhiwo.
Isikhathi sokuthunyelwe: Ephreli-28-2024