I-Hydroxypropyl methylcellulose (HPMC) iyisengezo samakhemikhali esisetshenziswa kabanzi ekukhiqizweni kodaka oluxutshwe ngamanzi. Le nhlanganisela ye-cellulose ether inezakhiwo ezikhethekile ezithuthukisa ukusebenza, ukuqina kanye nokusebenza kahle kodaka. Umsebenzi oyinhloko we-HPMC ukwandisa ukugcinwa kwamanzi kanye nokunamathela, ngaleyo ndlela kuthuthukiswe ikhono lokubopha lodaka.
1. Thuthukisa ukusebenza kahle
Ukusebenza kahle kwe-wet mix mortar kubhekisela ekhonweni layo lokuphathwa nokuthululwa kalula ngesikhathi sokwakhiwa. Lokhu kuyisici esibalulekile sokuqinisekisa ukuthi i-mortar kulula ukuyixuba, ukuyithulula nokuyibumba. I-HPMC isebenza njenge-plasticizer ngaleyo ndlela ihlinzeka ngokugcinwa kwamanzi kanye ne-viscosity efanele ku-mortar. Ngokungezwa kwe-HPMC, i-mortar iba yinkimbinkimbi kakhulu, okwenza inamathele futhi ihlangane kangcono.
Umphumela we-HPMC ekusebenzeni kahle kwe-mortar ungabangelwa ikhono layo lokujiya nokushintsha i-rheology yengxube. Ngokwandisa i-viscosity yengxube, i-HPMC iyenza ikwazi ukugeleza kangcono futhi inciphise noma yikuphi ukuthambekela kokuhlukanisa noma ukopha. Ukuthuthukiswa kwe-rheology yengxube nakho kusiza ukunciphisa i-viscosity ye-mortar, okwenza kube lula ukusebenza ngayo.
2. Khulisa ukugcinwa kwamanzi
Ukugcinwa kwamanzi kungenye yezimpawu ezibaluleke kakhulu ze-wet mix mortar. Kubhekisela ekhonweni le-wet mix mortar lokugcina amanzi isikhathi eside. I-mortar idinga ukugcinwa kwamanzi okwanele ukwandisa amandla nokuvimbela ukuncipha nokuqhekeka ngesikhathi sokoma.
I-HPMC ithuthukisa ukugcinwa kwamanzi kodaka oluxubile olumanzi ngokulawula ukumuncwa nokukhululwa kwamanzi engxubeni. Yakha ifilimu elincane elizungeze izinhlayiya zesamente, lizivimbele ekumunceni amanzi amaningi ngaleyo ndlela ligcine ukuhambisana kwengxube. Ifilimu futhi iyasiza ekunciphiseni ukuhwamuka kwamanzi engxubeni, ngaleyo ndlela yandise isikhathi sokusebenza kodaka.
3. Khulisa ukunamathela
Ukunamathela kuyikhono le-mortar lokubopha nokunamathela ku-substrate. Lokhu kuyisici esibalulekile ekuqinisekiseni ukuthi i-mortar ihlala endaweni yayo futhi ayihlukani nobuso obusetshenziswa kuyo. I-HPMC ithuthukisa ukunamathela kwe-mortar exubile emanzi ngokwandisa ukuhlangana kwengxube, ngaleyo ndlela ithuthukise amakhono ayo okubopha.
I-HPMC ifinyelela lokhu ngokwakha ifilimu elincane elizungeze izinhlayiya zesimende, okusiza ekuthuthukiseni amandla omshini wesimende. Ifilimu futhi isebenza njengesithiyo, ivimbela isimende ukuthi singahlukani nesisekelo. Ukunamathela kwesimende okuthuthukisiwe kuthuthukisa ukuqina nokuthembeka kokwakhiwa.
Ekuphetheni
Ukwengezwa kwe-HPMC kuma-wet mix mortar kunemiphumela eminingana emihle ekusebenzeni, ukuqina kanye nokusebenza kahle kwengxube. Kuthuthukisa ukugcinwa kwamanzi, ukusebenza kahle kanye nokunamathela, okwenza i-mortar ihlangane kakhudlwana, kube lula ukuyiphatha futhi ithembeke kakhudlwana. Lezi zakhiwo zenza i-HPMC ibe yisithasiselo esibalulekile samakhemikhali ekukhiqizweni kwe-wet mix mortar.
Isikhathi sokuthunyelwe: Septhemba 15-2023