IHydroxypropyl methylcellulose (HPMC) iyi-ether engeyona ionic cellulose eyenziwe nge-cellulose yezinto ze-polymer yemvelo ngochungechunge lwezinqubo zamakhemikhali.I-Hydroxypropylmethylcellulose (HPMC) iyimpushana emhlophe engenaphunga, enganambitheki, engenabuthi engancibilika emanzini abandayo ukuze yakhe isixazululo se-viscous esisobala.Inezici zokuqina, ukubopha, ukusabalalisa, i-emulsifying, ifilimu-forming, ukumisa okwesikhashana, i-adsorbing, i-gelling, i-surface esebenzayo, ukugcina umswakama nokuvikela i-colloid.Odakeni, umsebenzi obalulekile we-hydroxypropyl methylcellulose ukugcinwa kwamanzi, okuyikhono lodaka ukugcina amanzi.
1. Ukubaluleka kokugcinwa kwamanzi odaka
Udaka olungagcini kahle amanzi kulula ukopha futhi luhlukanise phakathi ngesikhathi sokuthutha nokugcinwa, okungukuthi, amanzi antanta phezulu, usinki wesihlabathi kanye nosimende ngezansi, futhi kufanele uvuselelwe kabusha ngaphambi kokusetshenziswa.Udaka olunokugcinwa kwamanzi okungalungile, ngesikhathi sokugcoba, inqobo nje uma udaka oluxubekile luhlangene ne-block noma isisekelo, udaka oluxubekile luzomuncwa amanzi, futhi ngesikhathi esifanayo, indawo yangaphandle udaka luzohwamulisa amanzi emkhathini, okuholela ekulahlekeni kwamanzi odaka.Amanzi anganele azophazamisa ukugeleza okwengeziwe kukasimende futhi kuthinte ukuthuthukiswa okuvamile kwamandla odaka, okuholela emandleni aphansi, ikakhulukazi amandla okuxhumana phakathi kodaka oluqinile kanye nongqimba oluyisisekelo, okuholela ekuqhekekeni nasekuweni kodaka.
2. Indlela yendabuko yokuthuthukisa ukugcinwa kwamanzi odaka
Isixazululo sendabuko ukunisela isisekelo, kodwa akunakwenzeka ukuqinisekisa ukuthi isisekelo siswakanyiswe ngokulinganayo.Umgomo ofanelekile we-hydration wodaka lukasimende esisekelweni uwukuthi: umkhiqizo we-cement hydration ungena esisekelweni kanye nenqubo yesisekelo esimunca amanzi, sakha "uxhumano oluyinhloko" oluphumelelayo nesisekelo, ukuze kuzuzwe amandla esibopho adingekayo.Ukunisela ngokuqondile phezu kwesisekelo kuzodala ukuhlakazeka okukhulu ekumunceni kwamanzi kwesisekelo ngenxa yokuhluka kwezinga lokushisa, isikhathi sokunisela, nokufana kokunisela.Isisekelo sinokumuncwa okuncane kwamanzi futhi sizoqhubeka nokumunca amanzi osimende.Ngaphambi kokuqhubeka kwe-cement hydration, amanzi adonswa, okuthinta ukungena kwe-cement hydration kanye nemikhiqizo ye-hydration ku-matrix;isisekelo sinokumuncwa okukhulu kwamanzi, futhi amanzi odaka agelezela esisekelweni.Ijubane eliphakathi lokufuduka lihamba kancane, futhi ngisho nongqimba olunothile ngamanzi luyakhiwa phakathi kodaka kanye ne-matrix, okuphinde kuthinte amandla esibopho.Ngakho-ke, ukusebenzisa indlela evamile yokunisela isisekelo ngeke nje kuhluleke ukuxazulula ngokuphumelelayo inkinga yokumuncwa kwamanzi amaningi kwesisekelo sodonga, kodwa kuzothinta amandla okubopha phakathi kodaka nesisekelo, okuholela ekubhobozeni nasekuqhekekeni.
3. Ukugcina amanzi ngendlela efanele
(1) Ukusebenza okuhle kakhulu kokugcina amanzi kwenza udaka luvuleke isikhathi eside, futhi lunobuhle bokwakhiwa kwendawo enkulu, impilo ende yesevisi emgqonyeni, kanye nokuxuba inqwaba kanye nokusetshenziswa kwenqwaba.
(2) Ukusebenza kahle kokugcinwa kwamanzi kwenza usimende odakeni ugcwale amanzi ngokugcwele, okuthuthukisa ngempumelelo ukusebenza kwesibopho sodaka.
(3) Udaka lunokusebenza okuhle kakhulu kokugcina amanzi, okwenza udaka lungabi lula ukuhlukaniswa nokopha, okuthuthukisa ukusebenza nokwakhiwa kodaka.
Isikhathi sokuthumela: Mar-20-2023