I-HPMC (i-hydroxypropyl methylcellulose)iyinhlanganisela ye-polymer esetshenziswa kakhulu emikhiqizweni kasimende. Inokuqina okuhle kakhulu, ukuhlakazeka, ukugcinwa kwamanzi kanye nezakhiwo zokunamathela, ngakho-ke ingathuthukisa kakhulu ukusebenza kwemikhiqizo kasimende. Enqubweni yokukhiqiza nokusetshenziswa kwemikhiqizo kasimende, bavame ukubhekana nezinkinga ezifana nokuthuthukisa uketshezi, ukuqinisa ukumelana nokuqhekeka, nokuthuthukisa amandla. Ukwengezwa kwe-HPMC kungaxazulula lezi zinkinga ngempumelelo.
1. Thuthukisa ukuguquguquka nokusebenza kwesimende esiludaka
Enqubweni yokukhiqiza imikhiqizo kasimende, i-fluidity iyisici esibalulekile esithinta imisebenzi yokwakha kanye nekhwalithi yomkhiqizo. Njenge-polymer thickener, i-HPMC ingakha uhlaka oluzinzile lwenethiwekhi ye-colloidal ku-slurry kasimende, ngaleyo ndlela ithuthukise ngempumelelo uketshezi nokusebenza kwe-slurry. Kunganciphisa kakhulu umehluko we-viscosity we-cement slurry, okwenza i-slurry ibe ipulasitiki eyengeziwe futhi ilungele ukwakhiwa nokuthululwa. Ngaphezu kwalokho, i-HPMC ingakwazi ukugcina ukufana kwe-slurry kasimende, ivimbele udaka lukasimende ekuhlukaneni phakathi nenqubo yokuxuba, futhi ithuthukise ukusebenza ngesikhathi sokwakha.
2. Ukuthuthukisa ukugcinwa kwamanzi emikhiqizo usimende
Inqubo ye-hydration kasimende iyisihluthulelo sokwakheka kwamandla emikhiqizo kasimende. Kodwa-ke, uma amanzi odaka lukasimende ehwamuka noma elahleka ngokushesha, ukusabela kwe-hydration kungase kungaphelele, ngaleyo ndlela kuthinte amandla nokubumbana kwemikhiqizo kasimende. I-HPMC inokugcinwa kwamanzi okuqinile, okungamunca kahle amanzi, kubambezele ukuhwamuka kwamanzi, nokugcina umswakama we-slurry usimende ezingeni elizinzile, ngaleyo ndlela kube nesandla ekufakweni okuphelele kukasimende, ngaleyo ndlela kuthuthukise amandla namandla imikhiqizo usimende. Ukuminyana.
3. Thuthukisa ukumelana nokuqhekeka kanye nokuqina kwemikhiqizo kasimende
Imikhiqizo kasimende ijwayele ukuqhekeka phakathi nenqubo yokuqina, ikakhulukazi imifantu enciphayo ebangelwa ukulahlekelwa umswakama ngokushesha phakathi nenqubo yokomisa. Ukwengezwa kwe-HPMC kungathuthukisa ukumelana nokuqhekeka kwemikhiqizo kasimende ngokwandisa i-viscoelasticity ye-slurry. Isakhiwo samangqamuzana e-HPMC singakha isakhiwo senethiwekhi kusimende, esiza ukuhlakaza ukucindezeleka kwangaphakathi futhi sinciphise ukuhlushwa kokucindezeleka kokunciphisa ngesikhathi sokuqina kukasimende, ngaleyo ndlela kunciphise ngokuphumelelayo ukuvela kwemifantu. Ngaphezu kwalokho, i-HPMC ingaphinde ithuthukise ukuqina kwemikhiqizo kasimende, iyenze ibe mancane amathuba okuthi izoqhekeka ngaphansi kwezimo ezomile noma ezisezingeni eliphansi lokushisa.
4. Ukwenza ngcono ukumelana kwamanzi nokuqina kwemikhiqizo kasimende
Ukuqina nokumelana kwamanzi kwemikhiqizo kasimende kuhlobene ngokuqondile nokusebenza kwabo ezindaweni ezinokhahlo. I-HPMC ingakha ifilimu ezinzile odaka lukasimende ukunciphisa ukungena komswakama nezinye izinto eziyingozi. Ingase futhi ithuthukise ukumelana kwamanzi emikhiqizweni kasimende ngokwenza ngcono ukuminyana kukasimende futhi ithuthukise ukumelana kwemikhiqizo usimende emswakameni. Ngesikhathi sokusetshenziswa isikhathi eside, imikhiqizo kasimende izinzile kumswakama ophezulu noma ezindaweni ezingaphansi kwamanzi, ayinakho ukuhlakazeka nokuguguleka, futhi inwebe impilo yayo yesevisi.
5. Thuthukisa amandla kanye nesivinini sokuqina kwemikhiqizo kasimende
Phakathi nenqubo yokusabela kwe-hydration yemikhiqizo kasimende, ukungezwa kwe-HPMC kungakhuthaza ukuhlakazwa kwezinhlayiya zikasimende ku-slurry kasimende futhi kwandise indawo yokuxhumana phakathi kwezinhlayiya zikasimende, ngaleyo ndlela kwandise izinga lokugeleza kwamanzi kanye nezinga lokukhula kwamandla kasimende. Ngaphezu kwalokho, i-HPMC ingakwazi ukuthuthukisa ukusebenza kahle kwesibopho sikasimende namanzi, ithuthukise ukukhula kwamandla okuqala, yenze inqubo yokuqina yemikhiqizo kasimende ifane, futhi ngaleyo ndlela ithuthukise amandla okugcina. Kwezinye izinhlelo zokusebenza ezikhethekile, i-HPMC ingaphinda ilungise izinga lokugeleza kukasimende ukuze livumelane nezidingo zokwakha ezindaweni ezahlukene.
6. Thuthukisa ukubukeka kanye nezinga eliphezulu lemikhiqizo usimende
Ikhwalithi yokubukeka kwemikhiqizo kasimende ibalulekile emphumeleni wokugcina wokusetshenziswa, ikakhulukazi ekwakhiweni okuphezulu kanye nemikhiqizo yokuhlobisa, lapho ukushelela nokushelela kokubukeka kungenye yezinto ezibalulekile zokulinganisa ikhwalithi. Ngokulungisa i-viscosity kanye nezakhiwo ze-rheological ze-cement slurry, i-HPMC inganciphisa ngempumelelo izinkinga ezinjengamabhamuza, amaphutha, nokusabalalisa okungalingani, ngaleyo ndlela yenze ubuso bemikhiqizo kasimende bushelelezi futhi bushelelezi, futhi ithuthukise ikhwalithi yokubukeka. Kweminye imikhiqizo kasimende yokuhlobisa, ukusetshenziswa kwe-HPMC kungabuye kuthuthukise ukufana nokuzinza kombala wabo, kunikeze imikhiqizo ukubukeka okubucayi kakhulu.
7. Thuthukisa ukumelana nesithwathwa kwemikhiqizo kasimende
Imikhiqizo kasimende esetshenziswa ezindaweni ezisezingeni eliphansi lokushisa kudingeka ibe nezinga elithile lokumelana nesithwathwa ukuze kuvinjelwe imifantu nomonakalo obangelwa imijikelezo yokuqhwaza. I-HPMC ingathuthukisa ukumelana nesithwathwa kwemikhiqizo kasimende ngokuthuthukisa ukuqina kwesakhiwo sodaka lukasimende. Ngokwenza ngcono ukuminyana kwemikhiqizo kasimende nokunciphisa umswakama wezimbotshana zikasimende, i-HPMC ithuthukisa ukumelana nesithwathwa kwemikhiqizo kasimende ngaphansi kwezimo eziphansi zokushisa futhi igwema ukulimala kwesakhiwo okubangelwa ukunwetshwa kukasimende ngenxa yokuqhwanda kwamanzi.
Ukusetshenziswa kweI-HPMCemikhiqizweni kasimende inezinhlobonhlobo zezinzuzo futhi ingathuthukisa kakhulu ukusebenza kwemikhiqizo kasimende ngokusebenzisa izindlela ezihlukahlukene. Akukwazi nje ukuthuthukisa i-fluidity, ukugcinwa kwamanzi, ukumelana nokuqhekeka namandla emikhiqizo kasimende, kodwa futhi kuthuthukise izinga eliphezulu, ukuqina kanye nokumelana nesithwathwa kwemikhiqizo kasimende. Njengoba imboni yezokwakha iqhubeka nokuthuthukisa izidingo zokusebenza kwemikhiqizo kasimende, i-HPMC izosetshenziswa kabanzi ukuze inikeze ukwesekwa kokusebenza okuzinzile nokusebenza kahle kokukhiqizwa nokusetshenziswa kwemikhiqizo kasimende.
Isikhathi sokuthumela: Dec-06-2024