IHydroxypropyl Methylcellulose (HPMC) iyinhlanganisela ye-polymer yemvelo esetshenziswa kakhulu ekwakheni, emithi, ekudleni nakweminye imikhakha. Embonini kasimende, i-AnxinCel®HPMC ivame ukusetshenziswa njengesengezo ukuze kuthuthukiswe kakhulu ukusebenza kukasimende, futhi kuthuthukise ukucutshungulwa, ukusebenza kanye nobulukhuni bokugcina bezingxube zikasimende.
1. Izici eziyisisekelo kanye nendlela yokusebenza ye-HPMC
I-HPMC iyikhemikhali etholakala ngokushintsha i-cellulose nge-ethylation, i-hydroxypropylation kanye ne-methylation. Isakhiwo sayo samangqamuzana sihlanganisa amaqembu amaningi e-hydrophilic kanye ne-hydrophobic, okwenza ukuthi idlale izindima eziningi ezinhlelweni zikasimende. I-HPMC idlala izindima ezilandelayo kusimende:
Ukuqina komphumela
I-HPMC inomphumela oqinile wokujiya futhi ingathuthukisa ngokuphawulekayo i-viscosity yokunamathisela usimende, yenze ingxube kasimende ibe yinto efanayo ngesikhathi sokuxuba nokugwema ukuhlukaniswa noma ukuchithwa kwenhlabathi. Lokhu kubalulekile ekuthuthukiseni ukuguquguquka nokusimama kokunamathisela usimende, ikakhulukazi kukhonkolo osebenza kahle kakhulu noma ezinye izinto zikasimende ezidingekayo, ukuqinisekisa ukuthi ugcwalisa isikhunta kangcono futhi unokuminyana okuphezulu.
Thuthukisa ukugcinwa kwamanzi
I-HPMC ingalawula ngempumelelo izinga lokuhwamuka kwamanzi kunamathisela usimende futhi ibambezele isikhathi sokuqala sokumisa usimende. Ikakhulukazi ekushiseni okuphezulu noma endaweni eyomile, ingagcina ukumanzisa kokunamathisela usimende futhi ivimbele ukomiswa ngaphambi kwesikhathi, ngaleyo ndlela ithuthukise ukusebenza kokwakhiwa. Ukugcinwa kwamanzi kuyisici esibalulekile ohlelweni lokwakhiwa kwezinto zikasimende futhi kungavimbela ngempumelelo ukwakheka kwemifantu.
Thuthukisa ukunamathela futhi uthuthukise i-fluidity
Ezinye izithasiselo zamakhemikhali zivame ukungezwa ekunamathisele usimende, njengama-polymers, izingxube zamaminerali, njll., okungase kuthinte uketshezi lwe-cement paste. I-HPMC ingakhuphula amandla okubopha usimende, yenze i-slurry ibe ipulasitiki noketshezi oluningi, ngaleyo ndlela ithuthukise ukusebenza kokwakhiwa. Ngaphezu kwalokho, i-HPMC ingaphinde ithuthukise ukunamathela phakathi kukasimende nezinye izinto zokwakha (njengesihlabathi namatshe) futhi inciphise ukwenzeka kokuhlukaniswa.
Thuthukisa ukumelana nokuqhekeka
Njengoba i-AnxinCel®HPMC ingathuthukisa ukugcinwa kwamanzi kasimende futhi ibambezele inqubo yokufakwa kwamanzi, ingathuthukisa ngempumelelo ukumelana nokuqhekeka kwezinto zikasimende. Ikakhulukazi esigabeni sokuqala lapho amandla usimende engafinyeleli ezingeni elanele, izinto zikasimende zijwayele ukuqhekeka. Ngokusebenzisa i-HPMC, izinga lokushwabana likasimende lingehliswa futhi ukwakheka kwemifantu okubangelwa ukulahleka kwamanzi ngokushesha kungancishiswa.
2. Umthelela we-HPMC ekufakweni kukasimende
Thuthukisa ukusebenza kukasimende
Umthelela wokujiya we-HPMC wenza ukunamathisela usimende kusebenze kakhulu. Ezinhlotsheni ezihlukene zikasimende (njengosimende ojwayelekile wasePortland, usimende owomisa ngokushesha, njll.), i-HPMC ingakwazi ukukhulisa uketshezi lwe-slurry futhi yenze kube lula ukuthululwa nokubumba ngesikhathi sokwakha. Ngaphezu kwalokho, i-HPMC ingenza ukunamathisela usimende kuzinze kakhulu ngesikhathi sokwakha, kunciphise ukufakwa komoya, futhi kuthuthukise ikhwalithi yokwakhiwa kwayo yonke.
Thuthukisa amandla usimende
Ukwengezwa kwe-HPMC kungathuthukisa ukusebenza kwamandla kasimende ngezinga elithile. Ishintsha ukusatshalaliswa kwamanzi kusimende, ikhuthaza ukusabela okufanayo kwe-hydration yezinhlayiya zikasimende, futhi ngaleyo ndlela ithuthukise amandla okugcina okuqina kasimende. Ekusetshenzisweni okungokoqobo, ukwengeza inani elifanele le-HPMC kungakhuthaza ukusabela kokuqala kwe-hydration kasimende futhi kuthuthukise amandla osimende acindezelayo, aguquguqukayo kanye namandla aqinile.
Ukuqina okuthuthukisiwe
Ukwengezwa kwe-HPMC kusiza ukuthuthukisa ukuqina kukasimende. Ikakhulukazi lapho usimende uchayeke ezindaweni ezigqwalile (ezifana ne-asidi, i-alkali, usawoti, njll.), i-HPMC ingathuthukisa ukumelana namakhemikhali nokumelana nokungeneka kukasimende, ngaleyo ndlela yandise impilo yesevisi yezakhiwo zikasimende. Ngaphezu kwalokho, i-HPMC inganciphisa i-capillary porosity yezingxube zikasimende futhi ikhulise ukuminyana kukasimende, ngaleyo ndlela yehlise izinga lokuwohloka kwawo ezindaweni ezinokhahlo.
Thuthukisa ukuguquguquka kwemvelo
Ngaphansi kwezimo zezulu ezimbi kakhulu, ukusebenza kukasimende kuvame ukuthintwa ukushintsha kwezinga lokushisa nomswakama. I-HPMC ingabambezela isikhathi sokumiswa kwe-slurry kasimende futhi inciphise izinkinga ezibangelwa ukoma ngokushesha noma ukugeleza kwamanzi ngokweqile. Ngakho-ke, ifaneleka ngokukhethekile ezindaweni zokwakha ezinokushisa okuphezulu, izinga lokushisa eliphansi kanye nezinguquko ezinkulu zomswakama.
3. Ukusetshenziswa kahle kwe-HPMC
Nakuba ukusetshenziswa kwe-HPMC kusimende kungathuthukisa kakhulu ukusebenza kwayo, ukusetshenziswa kwayo kudinga ukuqapha, ikakhulukazi enanini elingeziwe. Ukwengezwa ngokweqile kwe-HPMC kungase kubangele i-viscosity yokunamathisela usimende ukuthi ibe phezulu kakhulu, okuholela ekuhlanganiseni okungalingani noma ubunzima bokwakha. Ngokuvamile, inani le-HPMC elengeziwe kufanele lilawulwe phakathi kuka-0.1% no-0.5% wesisindo sikasimende, futhi inani elithile lidinga ukulungiswa ngokuvumelana nohlobo oluthile lukasimende, isicelo kanye nendawo yokwakha.
Imithombo ehlukene, ukucaciswa kanye namadigri okuguqulwa kweI-HPMC ingase futhi ibe nemiphumela ehlukene ezakhiweni zikasimende. Ngakho-ke, lapho ukhetha i-HPMC, izici ezifana nesisindo samangqamuzana, i-hydroxypropyl kanye ne-methylation degree kufanele kubhekwe ngokugcwele ukuze kutholakale ukuguqulwa okungcono kakhulu. Umphumela.
Njengesilungisi esibalulekile sikasimende, i-AnxinCel®HPMC ithuthukisa kakhulu ukusebenza, amandla, ukuqina kanye nokuvumelana nezimo kwemvelo kukasimende ngokujiya, ukuthuthukisa ukugcinwa kwamanzi, ukuthuthukisa ukunamathela kanye nokumelana nokuqhekeka. Ukusetshenziswa kwayo okubanzi embonini kasimende akugcini nje ngokuthuthukisa ukusebenza kukasimende jikelele, kodwa futhi kunikeza ukwesekwa okuqinile kocwaningo nokuthuthukiswa kwemikhiqizo emisha usimende efana nokhonkolo osebenza kahle kanye nezinto zokwakha ezivumelana nemvelo. Njengoba amaphrojekthi wokwakha eqhubeka nokwandisa izidingo zawo zokusebenza kwempahla, i-HPMC inamathuba abanzi okusebenza embonini kasimende futhi izoqhubeka nokuba isengezo esibalulekile sokuguqula usimende.
Isikhathi sokuthumela: Jan-16-2025