I-Hydroxypropyl methylcellulose (HPMC) iyi-non-ionic cellulose ether eyenziwe nge-cellulose yemvelo ye-polymer ngokusebenzisa uchungechunge lwezinqubo zamakhemikhali. I-Hydroxypropylmethylcellulose (HPMC) iyimpuphu emhlophe engenaphunga, engenambitheki, engenabuthi engancibilikiswa emanzini abandayo ukuze yakhe isixazululo esibonakalayo esiqinile. Inezimpawu zokujiya, ukubopha, ukuhlakaza, ukuhlanganisa, ukwakha ifilimu, ukumiswa, ukumunca, ukugaya, ukusebenza kwe-gelling, ukugcina umswakama nokuvikela i-colloid. Ku-mortar, umsebenzi obalulekile we-hydroxypropyl methylcellulose ukugcinwa kwamanzi, okuyikhono le-mortar lokugcina amanzi.
1. Ukubaluleka kokugcinwa kwamanzi ku-mortar
Udaka olunezinga eliphansi lokugcinwa kwamanzi kulula ukulukhipha nokuluhlukanisa ngesikhathi sokuthutha nokugcina, okungukuthi, amanzi ayantanta phezulu, isihlabathi kanye nesimende ngaphansi, futhi kumele luvuselelwe kabusha ngaphambi kokusetshenziswa. Udaka olunezinga eliphansi lokugcinwa kwamanzi, enkambisweni yokugcotshwa, inqobo nje uma udaka oluhlanganisiwe luthintana nebhulokhi noma isisekelo, udaka oluhlanganisiwe luzomuncwa ngamanzi, futhi ngesikhathi esifanayo, ubuso bangaphandle bodaka buzokhipha amanzi emoyeni, okuholela ekulahlekelweni kwamanzi kodaka. Amanzi anganele azothinta ukumuncwa okuqhubekayo kwesimende futhi athinte ukuthuthukiswa okuvamile kwamandla odaka, okuholela emandleni aphansi, ikakhulukazi amandla okuxhumana phakathi kodaka oluqinile kanye nesendlalelo sesisekelo, okuholela ekuqhekekeni nasekuweni kodaka.
2. Indlela yendabuko yokuthuthukisa ukugcinwa kwamanzi kwe-mortar
Isixazululo sendabuko ukunisela isisekelo, kodwa akunakwenzeka ukuqinisekisa ukuthi isisekelo simanziswe ngokulinganayo. Umgomo ofanele wokunisela isisekelo se-samente mortar esisekelweni yilona: umkhiqizo wokunisela isisekelo ungena esisekelweni kanye nenqubo yokumunca amanzi kwesisekelo, kwakha "uxhumano oluyinhloko" olusebenzayo nesisekelo, ukuze kufezwe amandla esibopho adingekayo. Ukunisela ngqo ebusweni besisekelo kuzobangela ukuhlakazeka okukhulu ekumuncweni kwamanzi kwesisekelo ngenxa yokwehluka kwezinga lokushisa, isikhathi sokunisela, kanye nokufana kokunisela. Isisekelo sinokumuncwa kwamanzi okuncane futhi sizoqhubeka nokumunca amanzi esisekelweni. Ngaphambi kokuba kuqhubeke ukumuncwa kwe-samente, amanzi ayamuncwa, okuthinta ukungena kwe-samente hydration kanye nemikhiqizo yokumunca amanzi esisekelweni; isisekelo sinokumuncwa kwamanzi okukhulu, futhi amanzi esisekelweni agelezela esisekelweni. Ijubane lokufuduka eliphakathi lihamba kancane, futhi ngisho nengqimba ecebile ngamanzi yakhiwa phakathi kwesimende ne-matrix, okuthinta namandla esibopho. Ngakho-ke, ukusebenzisa indlela evamile yokunisela eyisisekelo ngeke nje kwehluleke ukuxazulula ngempumelelo inkinga yokumuncwa kwamanzi amaningi esisekelo sodonga, kodwa kuzothinta amandla okubopha phakathi kwe-mortar nesisekelo, okuholela ekuqhekekeni nasekuqhekekeni.
3. Ukugcinwa kwamanzi ngendlela efanele
(1) Ukusebenza okuhle kakhulu kokugcinwa kwamanzi kwenza udaka luvuleke isikhathi eside, futhi lunezinzuzo zokwakha indawo enkulu, impilo ende yenkonzo emgqonyeni, kanye nokuxuba ama-batch kanye nokusetshenziswa kwama-batch.
(2) Ukusebenza kahle kokugcinwa kwamanzi kwenza usimende osesimendeni ube namanzi aphelele, okuthuthukisa ngempumelelo ukusebenza kokubopha kwesimende.
(3) I-mortar inokusebenza okuhle kakhulu kokugcina amanzi, okwenza i-mortar ingabi sengozini yokuhlukana nokopha, okuthuthukisa ukusebenza kahle kanye nokwakheka kwe-mortar.
Isikhathi sokuthunyelwe: Mashi-20-2023