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 yakha ifilimu yokumanzisa, futhi umswakama oyisisekelo udedelwa kancane kancane isikhathi eside, ukusabela kwe-hydration nge-inorganic gelling material ukuqinisekisa amandla okubopha kanye 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 ukugeleza okwanele, amandla ancishisiwe, ukuqhekeka, ukugoba. kanye nokuchitheka okubangelwa ukomiswa 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