I-HPMC isetshenziswa ku-gypsum kanye nosimende osuselwe osomile

I-HPMC (Hydroxypropyl Methylcellulose) iyinto esetshenziswa nge-polymer kabanzi ensimini yokwakha, ikakhulukazi ku-gypsum kanye nosimende osuselwe osomile osusiwe. Njenge-ether ye-cellulose eguquliwe, i-HPMC inezindawo ezihlukile ngokomzimba nangamakhemikhali, okwenza kube dlala indima ebalulekile ezintweni zokwakha.

1. Izici eziyisisekelo ze-HPMC
I-HPMC iyindawo ehlanganisiwe yamanzi, engenamibala, engenamphundla ehlanganisiwe enamanzi amahle e-solubility, i-Rhelogy, ukugcinwa kwamatshe kanye nezakhiwo ezenziwe ngefilimu. Ukwakheka kwamangqamuzana kwe-HPMC kuqukethe i-hydroxypropyll kanye ne-methyl substituents, okwenza kube ne-hydrophicity nokuqina okuhle, futhi kungakhiqiza ukungafani okuhle nemiphumela yokuqina kwezinto ezifana nesimende ne-gypsum. Ngokushintsha isisindo sayo samangqamuzana, izinga lokufaka esikhundleni se-hydroxypropyl kanye ne-methyl, i-Rheology neminye imisebenzi ye-HPMC ingashintshwa ukuze ivumelane nezidingo zohlelo lokusebenza ezihlukile.

2. Ukusetshenziswa kwe-HPMC ku-Gypsum-based ngodaka oluhlanganisiwe
Udaka olususelwe olomile olususelwe e-gypsum luyinto yokwakha nge-gypsum njengengxenye eyinhloko, esetshenziswa kabanzi ekuhlolweni kodonga, umhlobiso kanye namaphrojekthi okulungisa. Inqubo yokukhiqiza yodaka olususelwa ku-gypsum ngokuvamile yamukela inqubo eyomile yokuxuba, okungukuthi, i-gypsum, ama-fillers, ama-ejenti wokunwebeka, izengezo nezinye izinto ezisetshenziswayo zempuphu zixutshwe futhi zisetshenziswa ngqo. Njengesengezo esibalulekile, i-HPMC idlala izindima ezilandelayo ku-Gypsum-based ngodaka:

(1) Ukuthuthukisa ukusebenza kodaka
Udaka olususelwa ku-gypsum ludinga ukulunga okuhle ngesikhathi sokwakha, njengokunamathela okuhle, ukubonakala okulinganiselayo kanye nokushelela okulula. I-HPMC ithuthukisa izakhiwo zesilonda, okwenza udaka abe nokuvumelana okufanele, ukugwema ubunzima bokwakha obangelwa ukuba bomile kakhulu noma umanzi kakhulu. Kungathuthukisa ngempumelelo ukusebenza kwebhondi kodaka futhi kwandise isikhathi esivulekile, ngaleyo ndlela kuthuthukise ukusebenza kahle kwabasebenzi bezokwakha.

(2) Ukuthuthukisa ukugcinwa kwamanzi kodaka
Izinto ze-gypsum zinokufakwa kwamanzi okuqinile, okungadala kalula ukuthi udaka lome ngokushesha okukhulu, ngaleyo ndlela luthinta ukuwenza kanye nekhwalithi yokugcina yodaka. I-HPMC inokugcinwa kwamanzi okuhle futhi inganciphisa ngempumelelo ukuhwamuka kwamanzi, ngaleyo ndlela ibambezele inqubo yomoya yodaka, iqinisekise ukuthi udaka olususelwa e-gypsum lunesikhathi eside esivulekile kanye nokuqeda okungcono ngesikhathi sokwakha. Lokhu kubaluleke kakhulu ekuthuthukiseni ikhwalithi yokwakha.

(3) Ukuthuthukisa amandla nokuqina kodaka
I-HPMC ayinakuthuthukisa ukusebenzelana kuphela ngodaka, kepha futhi ithuthukisa amandla nokuqina kwayo. Ngokushintsha umthamo nohlobo lwe-HPMC, izakhiwo zemishini zodaka zingalungiselelwe, namandla acindezelayo namandla aguqukayo ngodaka kungandiswa. Ngasikhathi sinye, i-HPMC ingakhulisa ukumelana nokuqhekeka kodaka futhi inciphise imifantu ebangelwa ukumiswa kwe-shrinkage noma izinguquko zokushisa, ngaleyo ndlela kuthuthukise ukuqina kodaka.

I-3. Ukusetshenziswa kwe-HPMC ku-Cement-based ngokomile ohlanganisiwe
Udaka osuselwe osuselwe okomile olususelwe okomile lusetshenziswa kabanzi ekwakhiweni okunjengezindonga, phansi, ukufakwa kodonga lwangaphandle, ukufakwa kodonga, njll., Futhi kunesidingo esikhulu semakethe. Udaka osuselwa ku-clent, iqhaza le-HPMC liboniswa ikakhulukazi kulezi zinto ezilandelayo:

(1) Ukuthuthukisa uketshezi nokusebenza kodaka
Udaka olususelwa kuso usimende, i-HPMC, njengomuntu omkhulu, lungathuthukisa ngempumelelo uketshezi lodaka, okwenza kube lula ukwakha nokusebenza. Ngesikhathi senqubo yokwakha, uketshezi lukadaka luthinta ngqo ukusebenza kwezokwakha nekhwalithi. Ngokungeza inani elifanele le-HPMC olimini lwesimende olususelwa kusosimende, ukuvumelana kwalo kungathuthukiswa, ukuze lo Mdaka angakhombisa ukusebenza okuhle ezindaweni ezahlukahlukene zokwakha.

(2) thuthukisa ukugcinwa kwamanzi futhi unciphise ikhasi lekhasi lamanzi
Ngesikhathi senqubo enzima yodaka osuselwa kuso usimende, uma amanzi evele ngokushesha, kulula ukudala i-peater seepepage, yona maqondana namandla nobubanzi bekhwalithi yodaka. I-HPMC ingathuthukisa ukugcinwa kwamanzi kodaka olususelwa ku-cleent, gwema ukuguquguquka kwamanzi ngokweqile, qinisekisa ukufana nokuqina kodaka, ngaleyo ndlela kuthuthukise izinga lokwakha namandla ngemuva kokuqina.

(3) Ngcono ukumelana nokuqhekeka
Ngesikhathi senqubo enzima, udaka osuselwa kuso usimende uvame ukuncipha, okuholela ekuqhekekeni ebusweni noma ngaphakathi kodaka. I-HPMC yehlisa ngempumelelo ukwakheka kokuqhekeka kodaka olususelwa kuso usimende ngokuthuthukisa i-Rheology yodaka, yandisa i-plastiki yayo nokunamathelisa. Lo mphumela wokulwa nokuqhekeka awugcini nje ngokuthuthukisa ama-aesthetics wodaka, kepha futhi uthuthukisa ukuqina kwawo ekusetshenzisweni kwesikhathi eside.

(4) ukubambezela isikhathi sokuqina
I-HPMC ingaguqula izinga le-hydration lodaka olususelwa kusawoti, ngaleyo ndlela libambezele isikhathi esilukhuni. Lokhu kubaluleke kakhulu lapho usebenza emazingeni okushisa aphezulu noma ngaphezulu kwendawo enkulu, njengoba kunganikeza isikhathi esithe xaxa sezisebenzi zokwakha futhi kunciphise izinkinga zekhwalithi yokwakha ezibangelwa ukuqina okusheshayo.

I-4. Izinzuzo ze-HPMC ku-gypsum kanye nosimende osuselwe osomile osusiwe
(1) Ukulawulwa okuhle kwesimbongi
I-HPMC ingathuthukisa kakhulu izakhiwo zesilo lukadaka, kufaka phakathi ukuqina, ukuthuthukiswa kwe-viscosity, kanye nokugcinwa kwamanzi, ngaleyo ndlela kuthuthukiswe ukusebenza kodaka. Ngokushintsha kahle inani le-HPMC, izakhiwo zodaka zingalungiselelwe ukuze zihlangabezane nezidingo zezindawo ezahlukahlukene zokwakha.

(2) ukunamathela okuhle nokugcinwa kwamanzi
Noma ngabe ngodaka olususelwa ku-gypsum olususelwa ku-gypsum, lwe-hpmc lungathuthukisa ngempumelelo ukunqwabelana nokugcinwa kwamanzi ngodaka, kunciphise ukuqhekeka kodaka, futhi kuqinisekise ukusebenza kanye nekhwalithi eqinile ngesikhathi sokwakha.

(3) Ukuvikelwa kwezemvelo nokuphepha
I-HPMC ingamakhemikhali anganobuthi, angenamphundla, anobungani bemvelo abahlangabezana nezidingo zokuvikelwa okuluhlaza nokuvikelwa kwemvelo kwezinto zanamuhla zokwakha. Ngakho-ke, ukusetshenziswa kwe-HPMC akunakuthuthukisa ukusebenza kodaka, kodwa futhi kuqinisekisa ukuphepha kwendawo yokwakha.

I-HPMC idlala indima ebalulekile ekusetshenzisweni kodaka lwe-gypsum ne-cent-based eyomile. Kuthuthukisa ukusebenziseka, amandla nokuqina kodaka ngokwenza ngcono i-Rheology, ukunamathela, ukugcinwa kwamanzi nezinye izakhiwo zodaka. Ngesidingo esandayo sezinto zokwakha ukusebenza okuphezulu embonini yezokwakha, amathemba wohlelo lokusebenza e-HPMC abanzi kakhulu, ikakhulukazi ekukhiqizeni nokwakhiwa kodaka oluxutshwe nodaka, i-HPMC izoqhubeka nokudlala indima ebaluleke kakhulu.