I-HPMC (HYDROXYPROPYL Methylcellulose) Ingabe okuyisisekelo kusetshenziswa kakhulu ekwakheni udaka, ikakhulukazi ekwenzeni ngcono ukumelana kwamanzi, izakhiwo zembongo kanye nokwenza umsebenzi wokwakha.
1. Thuthukisa ukugcinwa kwamanzi kodaka
I-HPMC iyindawo eyenziwe ngamanzi polymer ekwazi ukwakha isakhiwo senethiwekhi ku-cement noma ngo-gypsum-based plaster. Lesi sakhiwo sisiza ukugcina amanzi futhi sivimbela usimende noma i-gypsum ekulahlekelweni kwamanzi ngokushesha ngesikhathi senqubo enzima, ngaleyo ndlela sigweme ukuqhekeka kwamanzi noma ukunciphisa ukumelana kwamanzi. Ngokungeza inani elifanele le-HPMC kulolu hlelo, inqubo ye-hydration ye-hyment ingabambezeleka, yenza odaba abe nekhono elingcono lokugcina amanzi. I-Hydrate eyenziwe ngosimende ngesikhathi senqubo ye-hydration idinga amanzi anele ukukhuthaza ukusabela. Ukubambezela ukulahleka kwamanzi kungathuthukisa ubungako kanye nekhono lokulwa nokuphindwa kwezinto zokugcina.
2. Thuthukisa ukunamathela nobukhulu bodaka
Njengesengezo se-polymer, i-HPMC ayikwazi ukuthuthukisa kuphela izakhiwo ze-bhesta zodaka, kepha futhi ithuthukisa ukunamathela kwayo. Lapho kufakwa i-HPMC, amandla e-bonding osolwayo ayathuthukiswa, okusiza ukuthi kwakhiwe ukunamathela okunamandla ku-substrate (njengezitini, ukhonkolo noma udonga). Ngasikhathi sinye, i-HPMC yenza udaka akha i-denser sakhiwo ngesikhathi senqubo enzima, ehlisa ubukhona be-capillary pores. Ama-pores ambalwa asho ukuthi kunzima kakhulu ngamanzi ukungena ngaphakathi, ngaleyo ndlela athuthukise ukumelana kwamanzi kodaka.
3. Ithuthukisiwe ukumelana nokuvumelanisa
Ukwakheka kwamangqamuzana kwe-HPMC kungakha into efana ne-colloid-like oda osongeni, ukuvumela udaka ukuze wakhe umfaniswano we-mistrorm phakathi kwenqubo yokwelapha. Njengoba ukwakheka kuthuthuka, indawo eyisidina iba bushelelezi futhi ibangelwa, futhi ukuvumela kwamanzi kuncishisiwe. Ngakho-ke, ukumelana kwamanzi kodaka kuyathuthuka, ikakhulukazi ezindaweni ezinomswakama noma ezicebile ngamanzi, ukwengeza i-HPMC kungavimba ngempumelelo umswakama kusuka ekungeneni odongeni ngokusebenzisa ungqimba olubuyiselwe odongeni.
4. Ukuqina okuthuthukisiwe nokungangeni manzi
Ukumelana namanzi kuncike hhayi kuphela ngekhono elingangenzi manzi lomphezulu wezinto ezibonakalayo, kepha futhi kuhlobene kakhulu nesakhiwo sangaphakathi sodaka. Ngokungeza i-HPMC, ukuqina okungokomzimba nangamakhemikhali kodaka kungathuthukiswa. I-HPMC ithuthukisa ukumelana nokugqwala kwamakhemikhali kodaka futhi igweme ukugqwala kosimende okubangelwa ukungena kwamanzi. Ikakhulu ekulweni kokuntywilishelwa kwamanzi okude noma izindawo ezinomswakama, i-HPMC isiza ukwelula impilo yensiza yodaka futhi ithuthukise izakhiwo zayo zokulwa nokuguga.
5. Lungisa i-viscosity nokusebenza
I-HPMC Futhi inomsebenzi wokuguqula ukuhlakanipha kanye nezinto ezinothando. Ekwakhiweni kwangempela, i-viscosity efanelekile ingenza ukuthi udaka lube lula ukugeleza lapho lusetshenziswa, futhi lungavikelekile ngokulinganayo odongeni ngaphandle kokubangela udaka ngenxa yomswakama ngokweqile ngenxa yomswakama ngokweqile. Ngokulawula ukusebenziseka kodaka, abasebenzi bezokwakha bangalawula kangcono ukufana kodaka, ngaleyo ndlela bathuthukise ngokungaqondile ukusebenza kwamanzi kwangaphandle.
6. Thuthukisa ukumelana kokuqhekeka
Ngesikhathi sokwakha, udaka luthambekele ekunciphiseni ngenxa yezici zangaphandle ezifana nezinguquko zokushisa kanye nokushintshashintsha komswakama, okuholela ekushintsheni. Ukuba khona kwemifantu akugcini ngokuthinta kuphela ukubukeka kodaka, kepha futhi kunikeza nesiteshi sokungena kwamanzi. Ukungezwa kwe-HPMC kungakhuphula ubulukhuni bodaka, okwenza kube nokumelana okuqinile ngesikhathi senqubo yokomisa, ngaleyo ndlela kugweme ukujula komswakama ekungeneni okungaphakathi ngokusebenzisa ukungena kwamanzi.
7. Thuthukisa ukuzivumelanisa nezimo kanye nokwakha lula
Ukungezwa kwe-HPMC nakho kungenza ukuguquguquka kwesimo esingaphansi kwezimo ezahlukahlukene zesimo sezulu. Emvelweni okushisa okuphezulu, umswakama wodaka uvele uphume ngokushesha futhi uthambekele ekuqhekekeni. Ukuba khona kwe-HPMC kusiza udaka olugcina amanzi endaweni eyomile, ukuze ijubane lawo lokuvuka lilawulwa futhi liqhekeke kanye nomonakalo wesendlalelo ongangeni manzi olwenziwe ngomiswa okusheshayo. Ngaphezu kwalokho, i-HPMC nayo ingathuthukisa ukunamathela kodaka, ukuze ikwazi ukugcina ukunamathela okuhle ezindaweni ezihlukile zesisekelo futhi akulula ukuwa.
I-HPMC idlala indima ebalulekile ekwenzeni ngcono ukumelana kwamanzi ngodaka, ikakhulukazi ngokusebenzisa izici ezilandelayo:
Ukugcinwa kwamanzi: ukubambezela i-hydration cent hydration, gcina umswakama, futhi uvikele ukomisa okusheshayo.
Ukunamathelisa kanye nobunzima: Ngcono ukunamathela kodaka endaweni eyisisekelo bese wakhe isakhiwo esiminyene.
Ukumelana nokuvumela: ukunciphisa ama-pores futhi kuvikele ukungena kwamanzi.
Ukuqina nokungangeni manzi: Thuthukisa ukuqina kwamakhemikhali nangokomzimba kwezinto ezibonakalayo futhi unwebe impilo yenkonzo.
Ukumelana nokuqhekeka: Khulisa ubunzima bodaka futhi unciphise ukwakheka kwemifantu.
Ukusebenziseka lula: Thuthukisa izakhiwo zesimbobo sodaka futhi uthuthukise ukusebenza ngesikhathi sokwakha. Ngakho-ke, i-HPMC ayigcini ngokungezelela ukuthuthukisa ukusebenza kokwakhiwa kodaka, kepha futhi ithuthukisa ukumelana kwamanzi ngodaka ngezindlela eziningi, ukuze udaka lukwazi ukuqina okuhle nokuqina kwesikhathi eside ezindaweni ezahlukahlukene ezinokhahlo.
Isikhathi sePosi: Nov-20-2024