Odakeni lukasimende kanye ne-gypsum-based slurry, i-hydroxypropyl methylcellulose idlala indima enkulu yokugcina amanzi kanye nokuqina, futhi ingathuthukisa ngempumelelo ukunamathela kanye nokumelana nokucwila kwe-slurry.
Izinto ezifana nezinga lokushisa lomoya, izinga lokushisa kanye nesivinini somfutho womoya zizothinta izinga lokuguquguquka kwamanzi odaka lukasimende kanye nemikhiqizo esekelwe ku-gypsum. Ngakho-ke, ezinkathini ezihlukene zonyaka, kunomehluko othile kumphumela wokugcina amanzi wemikhiqizo enenani elifanayo le-hydroxypropyl methylcellulose engeziwe. Ekwakhiweni okuthile, umphumela wokugcina amanzi we-slurry ungalungiswa ngokwandisa noma ukwehlisa inani le-HPMC elingeziwe. Ukugcinwa kwamanzi ngaphansi kwezimo zokushisa okuphezulu kuyinkomba ebalulekile yokuhlukanisa ikhwalithi ye-hydroxypropyl methylcellulose ether.
Imikhiqizo yochungechunge oluhle kakhulu lwe-hydroxypropyl methylcellulose ingaxazulula ngokuphumelelayo inkinga yokugcinwa kwamanzi ngaphansi kwezinga lokushisa eliphezulu. Ezikhathini zokushisa okuphezulu, ikakhulukazi ezindaweni ezishisayo nezomile kanye nokwakhiwa kongqimba oluncane ohlangothini olushisayo, i-HPMC yekhwalithi ephezulu iyadingeka ukuze kuthuthukiswe ukugcinwa kwamanzi odaka. Ikhwalithi ephezulu ye-HPMC inokufana okuhle kakhulu. Amaqembu ayo e-methoxy kanye ne-hydroxypropoxy asatshalaliswa ngokulinganayo eduze kweketango lamangqamuzana e-cellulose, elingathuthukisa ikhono lama-athomu omoya-mpilo ku-hydroxyl ne-ether bond ukuze ahlangane namanzi ukuze akhe amabhondi e-hydrogen. , ukuze amanzi amahhala abe amanzi abophekile, ukuze alawule ngokuphumelelayo ukuhwamuka kwamanzi okubangelwa izinga lokushisa eliphezulu, futhi kuzuzwe ukugcinwa kwamanzi aphezulu.
Ikhwalithi ephezulu ye-hydroxypropyl methylcellulose ingahlakazwa ngokulinganayo nangempumelelo odakeni lukasimende kanye nemikhiqizo esekwe ku-gypsum, futhi isonge zonke izinhlayiya eziqinile, futhi yakhe ifilimu yokumanzisa, futhi umswakama oyisisekelo udedelwa kancane kancane isikhathi eside, kanye nokusabela kwe-hydration nge-inorganic gelling material ukuqinisekisa amandla okubopha namandla acindezelayo wento.
Ngakho-ke, ekwakhiweni kwehlobo lokushisa eliphezulu, ukuze kuzuzwe umphumela wokugcina amanzi, kuyadingeka ukwengeza imikhiqizo ye-HPMC yekhwalithi ephezulu ngobuningi obanele ngokusho kwefomula, ngaphandle kwalokho, kuyoba khona i-hydration enganele, amandla ancishisiwe, ukuqhekeka, ukugoba nokuchithwa okubangelwa ukomisa ngokweqile. izinkinga, kodwa futhi ukwandisa nobunzima ukwakhiwa kwabasebenzi. Njengoba izinga lokushisa lehla, inani le-HPMC elingeziwe lingancishiswa kancane kancane, futhi umphumela ofanayo wokugcina amanzi ungafinyelelwa.
Isikhathi sokuthumela: Apr-13-2023