I-HPMC idlala indima enkulu yokugcina amanzi kanye nokuqina kodaka lukasimende kanye nodaka olusekelwe ku-gypsum, okungathuthukisa ngempumelelo ukuhlangana kanye nokumelana nokuwa kodaka.
Izinto ezifana nokushisa komoya, izinga lokushisa kanye nokucindezela komoya kuzothinta izinga lokuhwamuka kwamanzi ku-cement mortar kanye nemikhiqizo esekelwe ku-gypsum. Ngakho-ke, ezinkathini ezahlukene, ukwengeza inani elifanayo le-HPMC, umphumela wokugcina amanzi wemikhiqizo unemehluko ethile. Ukugcinwa kwamanzi kwe-methyl cellulose ether ekushiseni okuphezulu kuyinkomba ebalulekile yokuhlukanisa ikhwalithi ye-methyl cellulose ether. I-HPMC enhle kakhulu ingaxazulula ngempumelelo inkinga yokugcina amanzi 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, enobunye obuhle kakhulu, amaqembu ayo e-methoxy kanye ne-hydroxypropoxy asatshalaliswa ngokulinganayo ku-cellulose molecular chain, okungathuthukisa ikhono lama-athomu e-oxygen kuma-hydroxyl kanye ne-ether bonds ukuhlangana namanzi ukwakha ama-hydrogen bonds, ukuze amanzi akhululekile abe amanzi aboshiwe, ukuze kulawulwe ngempumelelo ukuhwamuka kwamanzi okubangelwa yisimo sezulu sokushisa okuphezulu futhi kufezwe ukugcinwa kwamanzi okuphezulu.
I-HPMC ye-cellulose esezingeni eliphezulu ingasakazwa ngokulinganayo nangokuphumelelayo ku-cement mortar kanye nemikhiqizo esekelwe ku-gypsum, futhi ihlanganise zonke izinhlayiya eziqinile, futhi yakhe ifilimu yokumanzisa, futhi umswakama osesisekelweni ukhishwa kancane kancane isikhathi eside. Ukusabela kokumanzisa kwezinto ezijiyile kwenzeka, ngaleyo ndlela kuqinisekiswe amandla okubopha kanye namandla okucindezela kwezinto. Ngakho-ke, ekwakhiweni kwehlobo okushisa okuphezulu, ukuze kufezwe umphumela wokugcinwa kwamanzi, kuyadingeka ukwengeza imikhiqizo ye-HPMC esezingeni eliphezulu ngokwefomula, ngaphandle kwalokho, ngeke kube khona ukumanzisa okwanele, ukunciphisa amandla, ukuqhekeka, ukugoba kanye nokuwa okubangelwa ukoma okusheshayo kakhulu. Kuphinde kwandise ubunzima bokwakha kwabasebenzi. Njengoba izinga lokushisa lehla, inani lokwengeza le-HPMC lingancishiswa kancane kancane, futhi umphumela ofanayo wokugcinwa kwamanzi ungafinyelelwa.
Isikhathi sokuthunyelwe: Mashi-26-2022