Ku-putty, usimende wodaka kanye ne-gypsum esekelwe eSlurry, i-hpmc hydroxyproppropyll methylcellose ether ikakhulukazi idlala indima yokugcinwa kwamanzi nokuqina, futhi ingathuthukisa ngempumelelo ukumelana nokuphikiswa kwe-slurry. Izici ezinjengokushisa komoya, izinga lokushisa nejubane lokucindezela komoya lizothinta izinga lokuzithambisa kwamanzi ku-putty, usimende ongumuntu ophethe udaka kanye nemikhiqizo esekwe e-gypsum. Ngakho-ke, ngezinkathi ezahlukahlukene zonyaka, kukhona umehluko othile emthethweni wokugcina amanzi wemikhiqizo ngenani elifanayo le-HPMC elingeziwe. Ekwakhiweni okuthize, umphumela wokugcinwa kwamanzi we-slurry ungashintshwa ngokwanda noma ukwehlisa inani le-HPMC elingeziwe.
Ukugcinwa kwamanzi kwe-methyl cellulose ether ngaphansi kwezimo zokushisa okuphezulu kuyinkomba ebalulekile yokuhlukanisa ikhwalithi ye-methyl cellulose ether. Imikhiqizo emihle yochungechunge lwe-HPMC ingaxazulula inkinga yokugcinwa kwamanzi ngaphansi kokushisa okuphezulu. Esikhathini sokushisa esiphakeme, ikakhulukazi ezindaweni ezishisayo nezomile kanye nokwakhiwa kwesendlalelo ohlangothini olunelanga, i-HPMC esezingeni eliphakeme iyadingeka ukuthuthukisa ukugcinwa kwamanzi kwe-slurry. I-HPMC esezingeni eliphakeme ingaguqula amanzi wamahhala odongeni emanzini aboshwe, ngaleyo ndlela elawula kahle ukuhwamuka kwamanzi okubangelwa isimo sezulu esiphakeme sokushisa nokuthola ukugcinwa kwamanzi okuphezulu.
I-methyl celtulese ephezulu ingahlakazwa ngokufanele futhi ihluke ngempumelelo emikhiqizweni yodaka kasimende kanye ne-gypsum-based imikhiqizo, futhi isonga zonke izinhlayiya eziqinile, futhi yakha ifilimu eliqinile, futhi amanzi azodedelwa kancane kancane isikhathi eside. Ukusabela kwe-hydration kwenzeka, ngaleyo ndlela uqinisekise amandla e-bond namandla acindezelayo wezinto ezibonakalayo. Ngakho-ke, ekwakhiweni kwamazinga okushisa aphezulu, ukuze kufinyelelwe umphumela wokugcina amanzi, kuyadingeka ukufaka imikhiqizo esezingeni eliphakeme ye-HPMC ngamanani anele ngokuya ngefomula. Uma kusetshenziswa i-HPMC eyinkimbinkimbi, i-hydration enganele, amandla ancishisiwe, ukuqhekeka, kanye nama-voids kuzokwenzeka ngenxa yokomiswa ngokweqile. Izinkinga zekhwalithi ezinjengemigqomo nokuchitheka futhi kwandisa ubunzima bokwakhiwa kwabasebenzi. Njengoba amazinga okushisa ehla, inani le-HPMC elingeziwe lingancishiswa kancane kancane, futhi imiphumela efanayo yokugcina amanzi ingatholakala.
Inqubo yokuphendula izilawuli ngokunembile ukukhiqizwa kwe-HPMC, futhi ukufaka kwayo kuqediwe futhi ukufana kwawo kuhle kakhulu. Isixazululo saso samanzi sicacile futhi sisobala, sinemicu embalwa yamahhala. Ukuhambisana ne-Rubber powder, usimende, i-lime nezinye izinto eziphambili ziqinile ikakhulukazi, ezingenza izinto eziphambili zidlale ukusebenza okuhle kakhulu. Kodwa-ke, i-HPMC enokusabela okungekuhle inemicu eminingi yamahhala, ukusatshalaliswa okungalingani kwabanye, ukugcinwa kwamanzi okumpofu nezinye izakhiwo, okuholela enanini elikhulu lokuhwamuka kwesimo sezulu esiphakeme. Kodwa-ke, okubizwa ngokuthi yi-HPMC (uhlobo oluhlanganisiwe) olunenani elikhulu lokungcola kunzima ukuxhumana komunye nomunye, ngakho-ke ukugcinwa kwamanzi nezinye izakhiwo zimbi kakhulu. Lapho kusetshenziswa i-HPMC ephansi ye-HPMC, izinkinga ezinjengamandla aphansi amancane, isikhathi sokuvula esifushane, i-powling, ukuqhekeka, ukuqhekeka, kuzokwandisa ubunzima bokwakha futhi kunciphise kakhulu ikhwalithi yesakhiwo.
Isikhathi Sokuthumela: Dec-17-2022