I-Hydroxypropyl methylcellulose ingathuthukisa i-anti-dispersion property ye-cement mortar

I-Hydroxypropyl methylcellulose (HPMC)iyinhlanganisela ebalulekile ye-polymer esetshenziswa kabanzi emkhakheni wezinto zokwakha, ikakhulukazi ku-samente mortar. Ithuthukisa i-anti-dispersion specific ye-samente mortar ngokusebenza kwayo okuhle kakhulu, ngaleyo ndlela ithuthukisa kakhulu ukusebenza kokwakha kanye nokuqina kwe-samente.

1. Izakhiwo eziyisisekelo ze-hydroxypropyl methylcellulose

I-HPMC iyi-ether ye-cellulose engeyona i-ionic etholakala ngokushintsha i-cellulose yemvelo ngamakhemikhali. Inomswakama omuhle wamanzi, ukugcinwa kwamanzi nokunamathela, futhi ibonisa ukuzinza okuphezulu kwamakhemikhali kanye nokuhambisana kwezinto eziphilayo. Ezintweni ezisekelwe kusimende, i-AnxinCel®HPMC ithuthukisa kakhulu ukusebenza kwezinto ngokulawula ukusabela kwamanzi kanye nokuziphatha kwe-viscosity.

2. Indlela yokuthuthukisa isici sokulwa nokuhlakazeka kwe-samente mortar

Impahla yokulwa nokuhlakazeka ibhekisela ekhonweni le-simende yokulondoloza ubuqotho bayo ngaphansi kwezimo zokukhuhla amanzi noma zokudlidliza. Ngemva kokwengeza i-HPMC, indlela yayo yokuthuthukisa ukulwa nokuhlakazeka ihlanganisa ikakhulukazi izici ezilandelayo:

2.1. Ukugcinwa kwamanzi okuthuthukisiwe

Ama-molecule e-HPMC angakha ifilimu yokumanzisa phezu kwezinhlayiya zesimende, okunciphisa ngempumelelo izinga lokuhwamuka kwamanzi futhi kuthuthukise amandla okugcina amanzi esimendeni. Ukugcinwa kwamanzi okuhle akugcini nje ngokunciphisa ingozi yokulahleka kwamanzi nokuqhekeka kwesimende, kodwa futhi kunciphisa ukuhlakazeka kwezinhlayiya okubangelwa ukulahleka kwamanzi, ngaleyo ndlela kuthuthukise ukulwa nokuhlakazeka.

2.2. Khulisa ukujiya

Omunye wemisebenzi eyinhloko ye-HPMC ukwandisa kakhulu i-viscosity ye-mortar. I-viscosity ephezulu ivumela izinhlayiya eziqinile ku-mortar ukuthi zihlanganiswe ngokuqinile, okwenza kube nzima kakhulu ukuhlakazeka lapho kucindezelwa amandla angaphandle. I-viscosity ye-HPMC iyashintsha ngokushintsha kokuhlushwa kanye nokushisa, kanye nokukhethwa okunengqondo kwenani lokwengeza kungafeza umphumela omuhle kakhulu.

2.3. I-thixotropy ethuthukisiwe

I-HPMC inikeza i-thixotropy enhle ye-mortar, okungukuthi, ine-viscosity ephezulu esimweni esingaguquki, futhi i-viscosity iyancipha uma isetshenziswa amandla okucheba. Izici ezinjalo zenza i-mortar isakazeke kalula ngesikhathi sokwakhiwa, kodwa ingabuyisa ngokushesha i-viscosity esimweni esingaguquki ukuvimbela ukuhlakazeka nokugeleza.

2.4. Lungiselela ukusebenza kwesixhumi esibonakalayo

I-HPMC isatshalaliswa ngokulinganayo ku-mortar, engakha ibhuloho phakathi kwezinhlayiya futhi ithuthukise amandla okubopha phakathi kwezinhlayiya. Ngaphezu kwalokho, umsebenzi wobuso be-HPMC unganciphisa futhi ukungezwani kobuso phakathi kwezinhlayiya zesimende, ngaleyo ndlela kuthuthukiswe ukusebenza kokulwa nokuhlakazeka.

3. Imiphumela kanye nezinzuzo zokusetshenziswa

Kumaphrojekthi angempela, udaka lukasimende oluxutshwe ne-HPMC lubonisa intuthuko enkulu ekusebenzeni kokulwa nokuhlakazeka. Nazi izinzuzo ezivamile:

Thuthukisa ukusebenza kahle kokwakha: Udaka olunamandla okuvimbela ukuhlakazeka kulula ukululawula ngesikhathi sokwakha futhi alukwazi ukuhlukana noma ukopha.

Thuthukisa ikhwalithi yobuso: Ukunamathela kodaka esisekelweni kuyathuthuka, futhi ubuso ngemva kokuplasta noma ukugandaya bubushelelezi.

Thuthukisa ukuqina: Nciphisa ukulahleka kwamanzi ngaphakathi kwe-mortar, nciphisa ukwanda kwezikhala ezibangelwa ukuhlakazeka, ngaleyo ndlela uthuthukise ubuningi nokuqina kwe-mortar.

4. Izici ezithonyayo namasu okwenza ngcono

Umphumela wokwengezwa kwe-HPMC uhlobene eduze nomthamo wayo, isisindo sama-molecule kanye nezimo zemvelo. Ukwengezwa kwenani elifanele le-HPMC kungathuthukisa ukusebenza kwe-mortar, kodwa ukwengezwa ngokweqile kungaholela ekuqineni ngokweqile futhi kuthinte ukusebenza kokwakhiwa. Amasu okuthuthukisa afaka:

Ukukhetha i-HPMC enesisindo sama-molecule esifanele kanye nezinga lokushintsha: I-HPMC enesisindo sama-molecule esiphezulu inikeza i-viscosity ephezulu, kodwa ukusebenza kanye nokusebenza kahle kudinga ukulinganisela ngokwezinhlelo zokusebenza ezithile.

Lawula ngokunembile inani lokwengeza: I-HPMC ivame ukungezwa ngenani elingu-0.1%-0.5% lesisindo sikasimende, okudingeka lilungiswe ngokwezidingo zangempela.

Naka indawo yokwakha: Izinga lokushisa kanye nomswakama kunomthelela omkhulu ekusebenzeni kahleI-HPMC, futhi ifomula kufanele ilungiswe ngaphansi kwezimo ezahlukene ukuze kutholakale imiphumela emihle kakhulu.

Ukusetshenziswa kwe-hydroxypropyl methylcellulose ku-cement mortar kuthuthukisa ngempumelelo ukumelana nokuhlakazeka kwezinto, ngaleyo ndlela kuthuthukiswe ukusebenza kokwakhiwa kanye nokuqina kwesikhathi eside kwe-mortar. Ngocwaningo olujulile mayelana nendlela yokusebenza kwe-AnxinCel®HPMC kanye nokwenza ngcono inqubo yokwengeza, izinzuzo zayo zokusebenza zingase zisetshenziswe kabanzi ukuze kuhlinzekwe izixazululo zekhwalithi ephezulu zamaphrojekthi okwakha.