I-Hydroxypropyl methylcellulose (HPMC) Ingabe i-polymer yemvelo esetshenziswa kabanzi ekwakhiweni, emithini, ekudleni kanye nezinye izinkambu. Emboni kasimende, i-ComTinCHELXEXCHMC ivame ukusetshenziswa njengesengezo ekuthuthukiseni kahle ukusebenza kosimende, futhi sithuthukise ukuqina, ukusebenza kanye nobulukhuni bokugcina bokuxubana kosenti.
1. Izici eziyisisekelo kanye nendlela yokwenza kwe-HPMC
I-HPMC yinto yamakhemikhali etholwe ngokushintsha iselula ngokulandela ukuhambisa, i-hydroxypropylication kanye ne-methylation. Isakhiwo sayo samangqamuzana sifaka amaqembu amaningi we-hydrophilic ne-hydrophobic, okuvumela ukuthi adlale izindima eziningi ezinhlelweni zikasimende. I-HPMC idlala izindima ezilandelayo ku-CEENT:
Umphumela wokuqina
I-HPMC inomphumela oqinile wokuqina futhi ingathuthukisa kakhulu ukubonwa kokonga kasimende, okwenza ingxube kasimende ifana ngokuxuba nokugwema ukuhlukaniswa noma ukuqina. Lokhu kubalulekile ekuthuthukiseni uketshezi nokuqina komakhelwane kasimende, ikakhulukazi ngokhonkolo osebenza kahle noma ezinye izinto ezifunwayo, ukuqinisekisa ukuthi kugcwalisa inqwaba kangcono futhi inenqwaba ephezulu.
Thuthukisa ukugcinwa kwamanzi
I-HPMC ingalawula ngempumelelo izinga lokuhwamuka kwamanzi ku-Cement Paste futhi libambezele isikhathi sokuqala sokusetha usimende. Ikakhulu ekushiseni okuphezulu noma imvelo eyomile, ingagcina ukunganakwa kokunamathisela usimende futhi kuvikele ukoma ngaphambi kwesikhathi, ngaleyo ndlela kuthuthukise ukusebenza kokwakha. Ukugcinwa kwamanzi kuyindawo ebalulekile enqubweni yokwakha yezinto zokwakha usimende futhi ingavimba ngempumelelo ukwakheka kwemifantu.
Thuthukisa ukunamathela futhi uthuthukise uketshezi
Ezinye izengezo zamakhemikhali zivame ukungezwa ku-Cement Paste, njengama-polymers, amaminerali admixture, njll. I-HPMC ingakhulisa amandla abugqilayo kasimende, okwenza ipulasitiki ngokwengeziwe noketshezi, ngaleyo ndlela kuthuthukise ukusebenza kokwakha. Ngaphezu kwalokho, i-HPMC ingaphinde futhi ithuthukise ukunamathela phakathi kosimende nezinye izinto zokwakha (njengesihlabathi kanye ne-gravel) futhi kunciphise ukwehluka.
Thuthukisa ukumelana nokuqhekeka
Njengoba iCunCinCel®PHPMC ingathuthukisa ukugcinwa kwamanzi kasimende nokubambezela inqubo ye-hydration, ingathuthukisa ngempumelelo ukumelana nokuqhekeka kokuqhekeka kwezinto zokwehla. Ikakhulu ekuqaleni kwesigaba lapho amandla kasimende engafinyeleli ezingeni elanele, impahla yesimende ithambekele emifakisweni. Ngokusebenzisa i-HPMC, inani le-shrinkage likasimende lingancishiswa yehliswe phansi futhi ukwakheka kokuqhekeka okubangelwa ukulahleka kwamanzi okusheshayo kungancishiswa.
2. Umphumela we-HPMC kwisicelo sesimende
Thuthukisa ukusebenza kosimende
Umphumela wokuqina we-HPMC wenza unamathisela usimende. Ngezinhlobo ezahlukene zikasimende (njengokushisa okujwayelekile kwePortland Cument, usimende omiswe ngokushesha, njll.), I-HPMC ingalungiselela ukugcwala kwe-slurry futhi kulungiswe ukuthulula nokubumba ngesikhathi sokwakha. Ngaphezu kwalokho, i-HPMC ingenza unamathisele usimende uzinze ngokwengeziwe ngesikhathi sokwakha, ukunciphisa ukufakwa komoya, futhi uthuthukise ikhwalithi yokwakha ephelele.
Thuthukisa amandla kasimende
Ukungezwa kwe-HPMC kungathuthukisa ukusebenza kwamandla kasimende kuze kube sezingeni elithile. Ishintsha ukusatshalaliswa kwamanzi ku-usimende, inyusa ukusabela kwe-hydration efanayo yezinhlayiya zosekhukhwini, futhi ngaleyo ndlela ikhulisa amandla okugcina aqinile kasimende. Kuzinhlelo zokusebenza ezisebenzayo, engeza inani elifanele le-HPMC lingakhuthaza ukusabela kwe-hydration kokuqala kosimende futhi kuthuthukise amandla acindezelayo, aguquguqukayo nawamanzi.
Ukuqina okuthuthukisiwe
Ukungezwa kwe-HPMC kusiza ukuthuthukisa ukuqina kukakhonkolo. Ikakhulu lapho usimende uvezwa ezindaweni ezonakalisayo (njenge-acid, i-alkali, usawoti, njll. Ngaphezu kwalokho, i-HPMC inganciphisa i-capillary poposity yokuxutshwa kosekhukhwini futhi yandise ubuntu buka usimende, ngaleyo ndlela kunciphise izinga lokuwohloka kwalo ezindaweni ezinokhahlo.
Thuthukisa ukuzivumelanisa nezimo zemvelo
Ngaphansi kwezimo zezulu zesimo sezulu ezingemuva, ukusebenza kukasimende kuvame ukuthi kuthinteke ngoshintsho ekushiseni nasekuthwalweni komswakama. I-HPMC ingabambezela isikhathi sokusetha sikasimende slurry futhi sinciphise izinkinga ezibangelwa ukomisa ngokushesha noma nge-hydration ngokweqile. Ngakho-ke, ilungele ikakhulukazi izindawo zokwakha ezinokushisa okuphezulu, izinga lokushisa eliphansi kanye noshintsho olukhulu lomswakama.
3. Ukusetshenziswa okulungile kwe-HPMC
Yize ukusetshenziswa kwe-HPMC ku-Cement kungathuthukisa kakhulu ukusebenza kwayo, ukusetshenziswa kwayo kudinga ukuqapha, ikakhulukazi ngenani elingeziwe. Ukungezwa ngokweqile kwe-HPMC kungadala ukuthi i-viscosity ye-paste yesikhumba iphakeme kakhulu, okuholela ebunzimeni bokuxubana noma bokwakha abangalingani. Ngokuvamile, inani le-HPMC elingeziwe kufanele lilawulwe phakathi kuka-0,1% no-0.5% wesisindo sosemusi, futhi inani elithile lidinga ukulungiswa ngokuya ngohlobo oluthile lwesimende, uhlelo lokusebenza kanye nokwakha indawo.
Imithombo ehlukene, imininingwane nokuguqulwa kwamadigri weI-HPMC Futhi ingaba nemiphumela ehlukile kwizakhiwo zikakonisi. Ngakho-ke, lapho ukhetha i-HPMC, izici ezinjengesisindo se-molecular, i-hydroxypropyl kanye ne-methylation degree kufanele ibhekwe kabusha ukuze uthole ukuguqulwa okuhle kakhulu. Umphumela.
Njengomshini obalulekile wesimende, iCicket®HPMC ithuthukisa kakhulu ukuwenza, amandla, ukuqina kanye nokuqina kwezemvelo kuka usimende ngokuqina, ukuthuthukisa ukugcinwa kwamanzi, ukuthuthukisa ukumelana nokuqhekeka okuthuthukisayo nokuqhekeka kokuqhekeka kanye nokuvimbela ukumelana nokuqhekeka. Isicelo saso esibanzi embonini kasimende asigcini nje ngokuthuthukisa ukusebenza kwe-CEAND, kepha futhi sinikeza ukusekelwa okuqinile kocwaningo kanye nokuthuthukiswa kwemikhiqizo emisha yokwenza ukhonkolo okufana nokhonkolo wokwakha okuphezulu kanye nezinto zokwakha ezinobungane. Njengoba amaphrojekthi wokwakha ayaqhubeka nokukhulisa izidingo zawo zokusebenza kwezinto ezibonakalayo, i-HPMC inamathemba okusebenza abanzi embonini kasimende futhi azoqhubeka nokuba yisengezo sokuguqulwa kosemusi obalulekile.
Isikhathi sePosi: Jan-16-2025