IHydroxypropyl methylcellulose (HPMC) iyisengezo esisebenza ngezindlela eziningi esisetshenziswa kakhulu embonini yezokwakha, ikakhulukazi ekwakhiweni kwe-wall putty.I-HPMC inikeza izinzuzo ezimbalwa ezisiza ukuthuthukisa ukusebenza kanye nekhwalithi ye-wall putty.Nazi izinzuzo ezintathu ezinkulu zokusebenzisa i-HPMC ku-wall putty:
Ukugcinwa kwamanzi nokuvumelana:
Enye yezinzuzo eziyinhloko zokufaka i-HPMC ekwakhekeni kwe-wall putty izakhiwo zayo ezinhle kakhulu zokugcina amanzi.I-HPMC iyi-polymer eyi-hydrophilic, okusho ukuthi inobudlelwane obuqinile bamanzi.Uma yengezwa ku-wall putty, i-HPMC yenza ifilimu egcina amanzi ezungeze izinhlayiya zikasimende, ivimbele amanzi ukuthi ahwamuke ngokushesha phakathi nenqubo yokwelapha.
Amandla e-HPMC okugcina umswakama ekuxubeni kunezinzuzo ezimbalwa zokufakwa kwe-wall putty.Okokuqala futhi okubaluleke kakhulu, ithuthukisa ukusebenza kwe-putty futhi yandisa isikhathi sayo esivulekile, okwenza kube lula ukusabalalisa nokushelela phezu kwe-substrate.Lokhu kuzuzisa ngokukhethekile emisebenzini yokwakha, lapho izisebenzi zingase zidinge isikhathi esengeziwe sokufaka isicelo futhi ziqedele i-wall putty ngaphambi kokuba iqale.
Ngaphezu kwalokho, umthamo we-HPMC wokubamba amanzi usiza ukuthuthukisa ukunamathela kwe-putty ku-substrate.Ukutholakala kwamanzi isikhathi eside kuqinisekisa i-hydration efanele yezinhlayiya ze-cement, okuholela esibopho esiqinile nesihlala isikhathi eside phakathi kwe-wall putty kanye nendawo engaphansi.Lokhu kubalulekile ekusebenzeni kwesikhathi eside kanye nobuqotho be-wall putty esetshenziswayo.
Thuthukisa ukubumbana nokumelana nokuhlehla:
I-HPMC isebenza njenge-thickener ne-binder ekwakhiweni kwe-putty odongeni, ithuthukisa ukuhlangana kwento.Ukuba khona kwe-HPMC kusiza ukugcina ubuqotho nokwakheka kwe-putty, ukuyivimbela ekuncipheni noma ekuweni lapho isetshenziswa ezindaweni eziqondile.Lokhu kubaluleke kakhulu ekusebenzeni okuphezulu noma lapho usebenza ezindongeni ngama-engeli ahlukene.
Izici zokujiya ze-HPMC zisiza ukukhulisa ukujiya nokuvumelana kwe-wall putty, ukuyivumela ukuthi ibambelele ngempumelelo ku-substrate ngaphandle kokugijima noma ukuconsa.Ngenxa yalokho, ama- putty odongeni aqukethe i-HPMC anokumelana okuphezulu nokucwila, okuqinisekisa ukusetshenziswa okulinganayo nokungaguquguquki, ikakhulukazi ezindaweni eziqondile neziphakeme.Lesi sakhiwo sisiza isiphetho esibushelelezi futhi esibukeka kahle.
Ngaphezu kwalokho, ukuhlangana okuthuthukisiwe okuhlinzekwa yi-HPMC kusiza i-wall putty ukumelana nokuqhekeka.I-polymer yakha ifilimu eguquguqukayo evumela ukunyakaza okuncane ku-substrate, ukunciphisa amathuba okuqhekeka ngokuhamba kwesikhathi.Lokhu kuyisici esiyinhloko ekusebenzeni kwe-wall putty, njengoba imifantu ingathinta ukubukeka nokuqina kwe-coating esetshenzisiwe.
Ukunamathela okuthuthukisiwe namandla okubopha:
Ukunamathela kuyisici esibalulekile ekusebenzeni kwe-wall putty, okuthinta ngokuqondile amandla okubopha phakathi kwe-putty ne-substrate.I-HPMC idlala indima ebalulekile ekuthuthukiseni ukunamathela ngokwenza ifilimu ehlangene futhi eguquguqukayo ekhuthaza ukunamathela okuqinile kobuso.
Amandla okugcina amanzi e-HPMC aqinisekisa ukuthi amanzi anele ayatholakala ukuze kufakwe amanzi ezinhlayiya zikasimende, okukhuthaza ukwakheka kwesibopho esiqinile phakathi kwe-wall putty kanye ne-substrate.Lokhu kubaluleke kakhulu uma usebenzisa i-putty ezindaweni ezimbotshana noma eziyinselele, lapho ukuthola ukunamathela okuhle kungaba yinselele enkulu.
Ukwengeza, i-HPMC isiza ekunciphiseni ukushwabana phakathi nenqubo yokomisa nokwelapha kwe-wall putty.Ukunciphisa ukuncipha kusiza ukugcina ukuxhumana phakathi kwe-putty ne-substrate, kuqhubeke kuthuthukisa amandla esibopho.Umphumela uba i-wall putty enamathela ngokuqinile ezindaweni ezihlukahlukene, ehlinzeka ngokusebenza okuhlala isikhathi eside nokumelana nokuxebuka noma i-delamination.
IHydroxypropyl methylcellulose (HPMC) inikeza izinzuzo ezimbalwa ezibalulekile lapho ihlanganiswa ekwakhekeni kwe-wall putty.Izici zayo ezigcina amanzi zithuthukisa ukusebenza nokunamathela, kuyilapho amandla ayo okujiya nokubopha asiza ukuthuthukisa ukubumbana nokumelana nokucwila.Ukusetshenziswa kwe-HPMC ekwenziweni kwe-putty odongeni ekugcineni kunganikeza imboni yezokwakha ngezingubo ezihlala isikhathi eside, ezinhle nezisebenza kakhulu endaweni yangaphakathi nengaphandle.
Isikhathi sokuthumela: Nov-28-2023