Yemvelo Polymer Hydroxypropyl Methylcellulose For Cement Based Plaster

I-Hydroxypropyl methylcellulose (HPMC) i-polymer yemvelo esetshenziswe kabanzi embonini yezokwakha njengesengezo esisekelwe usimende. Ingasetshenziswa njenge-ejenti yokugcina amanzi, i-thickener, kanye ne-binder ukuze kuthuthukiswe ukusebenza kwamapulasi asekelwe usimende.

I-HPMC iyi-semi-synthetic, i-polymer encibilika emanzini eyenziwe nge-cellulose. Itholakala ku-cellulose yemvelo ngenqubo yokuguqulwa kwamakhemikhali ehlanganisa ukufakwa kwe-hydroxypropyl namaqembu e-methyl. Lokhu kuguqulwa kubangela i-polymer enokuncibilika okuthuthukisiwe kwamanzi, ukuzinza kokushisa, nokumelana namakhemikhali.

Ukusetshenziswa kwe-HPMC ekwenziweni kukasimende okusekelwe kusimende kunikeza izinzuzo eziningi ezifana nalezi:

1. Ukusebenza Okuthuthukisiwe: I-HPMC isebenza njengesiguquli se-rheology esithuthukisa ukusebenza kanye nezakhiwo zokusebenzisa ukhonkolo. Ithuthukisa ukunamathela, ukubumbana, nokusabalalisa kwe-plaster, okuvumela ukuthi kusetshenziswe kalula ku-substrate.
2. Ukugcina Amanzi Okuthuthukisiwe: I-HPMC ingakwazi ukumunca futhi igcine amanzi amaningi, okusiza ukuvimbela ukhonkolo ukuthi lome ngokushesha. Le ndawo futhi iqinisekisa ukuthi ukhonkolo ugcina ukuhambisana nokusebenza isikhathi eside, ngisho nasezimweni ezishisayo nezomile.
3. Ukwenyuka Ukubumbana Nokunamathela: I-HPMC yenza ifilimu ezungeze izinhlayiya zikasimende, ezithuthukisa ukuhlangana kwazo nokunamathela ku-substrate. Lesi sakhiwo siqinisekisa ukuthi udaka luhlala luqinile futhi aluqhekeki noma luhlukane ne-substrate.
4. Ukuqhekeka Okuncishisiwe: I-HPMC ithuthukisa amandla okuqina kanye nokuguquguquka kokhonkolo, inciphisa amathuba okuqhekeka ngenxa yokushwabana noma ukunwetshwa.
5. Ukuqina Okuthuthukisiwe: I-HPMC ihlinzeka ukhonkolo ngokumelana namanzi okuthuthukisiwe kanye nokumelana namakhemikhali, okuyenza iqine futhi imelane nesimo sezulu nokuguga.

Ngaphezu kwalezi zinzuzo, i-HPMC futhi iyisengezo esimeme nesinobungani kwemvelo esingasiza ekwehliseni umthelela wemvelo wezikhonkwane ezisekelwe usimende. Ayinabuthi, iyabola, futhi ayikhiphi izinto eziyingozi emvelweni.

Ukuze usebenzise i-HPMC kumapulasi asekelwe usimende, ivamise ukungezwa kungxube eyomile kasimende nesihlabathi ngaphambi kokwengezwa kwamanzi. Umthamo onconyiwe we-HPMC uyahlukahluka kuye ngohlelo oluthile kanye nezakhiwo ezifiswayo zokhonkolo. Ngokuvamile, kunconywa umthamo we-0.2% kuya ku-0.5% we-HPMC ngokusekelwe esilinganisweni sesisindo sikasimende nesihlabathi.

I-HPMC iyisengezo esisebenza ngezindlela eziningi nesisebenzayo esingathuthukisa kakhulu ukusebenza kwamapulasi asekelwe usimende. Umsuka wayo wemvelo, ukusimama, kanye nobungane bemvelo kuyenza ibe inketho ekhangayo kosonkontileka, abaklami bezakhiwo, nabanikazi bezakhiwo ababeka kuqala izinqubo zokwakha ezizinzile.