I-HPMC ikakhulu idlala indima yokugcina amanzi kunye nokuqina kwi-samente mortar kunye ne-gypsum-based slurry, nto leyo enokuphucula ngempumelelo ukuhambelana kunye nokumelana nokuwa kwe-slurry.
Izinto ezifana nobushushu bomoya, ubushushu kunye noxinzelelo lomoya ziya kuchaphazela izinga lokuphuma kwamanzi kwisamente kunye neemveliso ezisekwe kwi-gypsum. Ke ngoko, ngamaxesha ahlukeneyo onyaka, ukongeza inani elifanayo le-HPMC, isiphumo sokugcina amanzi kwiimveliso sineeyantlukwano ezithile. Ukugcinwa kwamanzi kwi-methyl cellulose ether kubushushu obuphezulu luphawu olubalulekileyo lokwahlula umgangatho we-methyl cellulose ether. I-HPMC egqwesileyo inokusombulula ngempumelelo ingxaki yokugcina amanzi phantsi kobushushu obuphezulu. Kumaxesha obushushu obuphezulu, ngakumbi kwiindawo ezishushu nezomileyo kunye nokwakhiwa okuncinci kwicala elinelanga, i-HPMC esemgangathweni ophezulu iyafuneka ukuphucula ukugcinwa kwamanzi kwi-slurry. I-HPMC esemgangathweni ophezulu, enobunye obuhle kakhulu, amaqela ayo e-methoxy kunye ne-hydroxypropoxy asasazwa ngokulinganayo kwi-cellulose molecular chain, enokuphucula amandla ee-athomu ze-oxygen kwi-hydroxyl kunye ne-ether bonds ukuba zidibane namanzi ukwenza ii-hydrogen bonds, ukuze amanzi akhululekileyo abe ngamanzi abotshelelweyo, ukuze kulawulwe ngempumelelo ukuphuma kwamanzi okubangelwa yimozulu eshushu kwaye kufezekiswe ukugcinwa kwamanzi okuphezulu.
I-HPMC ye-cellulose ekumgangatho ophezulu ingasasazwa ngokulinganayo nangokufanelekileyo kwi-samente mortar kunye neemveliso ezisekwe kwi-gypsum, kwaye igqume zonke iinxalenye eziqinileyo, kwaye yenze ifilimu yokumanzisa, kwaye ukufuma kwisiseko kukhutshwa kancinci kancinci kwixesha elide. I-hydration reaction yezinto ezijiyayo iyenzeka, ngaloo ndlela iqinisekisa amandla okubopha kunye namandla okucinezela kwezinto. Ke ngoko, kubushushu obuphezulu bokwakha ehlotyeni, ukuze kufezekiswe isiphumo sokugcina amanzi, kuyimfuneko ukongeza iimveliso ze-HPMC ezikumgangatho ophezulu ngokwefomula, kungenjalo, akuyi kubakho ukufuma okwaneleyo, ukunciphisa amandla, ukuqhekeka, ukugoba kunye nokuwa okubangelwa kukoma ngokukhawuleza. Kwakhona kwandisa ubunzima bokwakha kubasebenzi. Njengoko ubushushu buhla, inani elongeziweyo le-HPMC linokuncipha kancinci, kwaye isiphumo esifanayo sokugcina amanzi sinokufezekiswa.
Ixesha lokuthumela: Matshi-26-2022