I-HPMC Hydroxypropyl methyl celluloseodakeni lukasimende kanye ne-gypsum slurry, ikakhulukazi idlala indima yokugcina amanzi nokuqina, ingathuthukisa ngempumelelo ukunamathela kanye nokumelana ne-slurry.
Izinga lokushisa lomoya, izinga lokushisa kanye nezinga lomfutho womoya lingathinta izinga lokuhwamuka kwamanzi odaka lukasimende kanye nemikhiqizo esekelwe ku-gypsum. Ngakho-ke ezinkathini ezihlukene zonyaka, ukwengeza i-hydroxypropyl methyl cellulose inani elifanayo lomphumela wokugcina amanzi womkhiqizo kunomehluko othile. Ekwakhiweni kukakhonkolo, umphumela wokugcina amanzi we-slurry ungalungiswa ngokwandisa noma ukwehlisa inani le-HPMC. Ukugcinwa kwamanzi kwe-methyl cellulose ether ezingeni lokushisa eliphezulu kuyinkomba ebalulekile yokuhlukanisa ikhwalithi ye-methyl cellulose ether.
Kuhle kakhului-hydroxypropyl methyl celluloseimikhiqizo yochungechunge ingaxazulula ngokuphumelelayo inkinga yokugcinwa kwamanzi ngaphansi kwezinga lokushisa eliphezulu. Esikhathini sokushisa okuphezulu, ikakhulukazi ezindaweni ezishisayo nezomile kanye nokwakhiwa kongqimba oluncane ohlangothini olushisayo, isidingo sekhwalithi ephezulu ye-HPMC yokuthuthukisa ukugcinwa kwamanzi okudaka; i-hydroxypropyl methyl cellulose (HPMC), ukufana muhle kakhulu, i-oksijini ne-oxygen hydroxypropyl amaqembu asatshalaliswa ngokulinganayo eduze kweketango le-cellulose, ingathuthukisa i-hydroxyl ne-ether oxygen namanzi ku-key ehlanganisa ikhono le-hydrogen bonding, lenze amanzi mahhala e-hydration, ukuze kulawulwe ngempumelelo isimo sezulu esishisayo esibangelwa ukuhwamuka kwamanzi okubangelwa ukuhwamuka okuphezulu.
Ikhwalithi ephezulu ye-hydroxypropyl methyl cellulose ingahlakaza ngokulinganayo nangempumelelo odakeni lukasimende kanye nemikhiqizo ye-plaster, futhi ihlanganise zonke izinhlayiya eziqinile, futhi yakhe ungqimba lwefilimu yokumanzisa, umswakama osesisekelweni isikhathi eside ukhishwa kancane kancane, kanye nokusabela kwe-inorganic cementitious hydration, ukuze kuqinisekiswe amandla ebhondi namandla acindezelayo wezinto ezibonakalayo.
Ekwakhiweni, ukuze kuzuzwe umphumela wokongiwa kwamanzi, kudingeka wengeze izinga eliphezuluI-HPMCimikhiqizo ngokuhambisana nefomula, ngaphandle kwalokho, kuzoba nokoma ngokushesha okukhulu okubangelwa ukungonelwa kwe-hydration, ukunciphisa amandla, ukuqhekeka, isigubhu esingenalutho kanye nezinkinga zekhwalithi zokuchitha, kodwa futhi kwandise ubunzima bokwakhiwa kwabasebenzi. Njengoba izinga lokushisa lincipha, inani lamanzi i-HPMC lingancishiswa kancane kancane, futhi umphumela ofanayo wokugcina amanzi ungafinyelelwa.
Isikhathi sokuthumela: Apr-26-2024