Izinto ezifana nobushushu bomoya, ubushushu kunye noxinzelelo lomoya ziya kuchaphazela izinga lokuguquguquka kokufuma kudaka lwesamente kunye neemveliso ezisekwe kwigypsum. Ngoko ke, ngamaxesha ahlukeneyo, isiphumo sokugcinwa kwamanzi kwisixa esifanayo se-HPMC sihlukile.
Kulwakhiwo oluthile, umphumo wokugcinwa kwamanzi we-slurry unokulungiswa ngokunyuka okanye ukunciphisa inani le-HPMC elongezelelweyo. Ukugcinwa kwamanzi kwe-hydroxypropyl methyl cellulose ether phantsi kweemeko eziphezulu zokushisa luphawu olubalulekileyo lokuhlukanisa umgangatho we-hydroxypropyl methyl cellulose ether. Iimveliso ezigqwesileyo ze-HPMC zinokusombulula ngempumelelo ingxaki yokugcinwa kwamanzi kumaqondo obushushu aphezulu.
Ngamaxesha obushushu obuphezulu, ngakumbi kwiindawo ezishushu nezomileyo kunye nolwakhiwo olubhityileyo kwicala elinelanga, i-HPMC ekumgangatho ophezulu iyafuneka ukuze kuphuculwe ukugcinwa kwamanzi kwi-slurry. Umgangatho ophezulu we-HPMC unokufana okuhle kakhulu. Amaqela ayo e-methoxy kunye ne-hydroxypropoxy asasazwa ngokulinganayo kunye ne-cellulose molecular chain, enokuphucula amandla e-athomu ze-oksijini kwi-hydroxyl kunye ne-ether bonds ukudibanisa namanzi ukwenza iibhondi ze-hydrogen, ukuze amanzi akhululekile abe ngamanzi adibeneyo, ngaloo ndlela alawule ngokufanelekileyo. ukuguquka kwamanzi okuba ngumphunga obangelwa yimozulu yobushushu obuphezulu, kunye nokuphumeza ukugcinwa kwamanzi aphezulu.
Umgangatho ophezulu we-cellulose we-HPMC unokusasazwa ngokulinganayo nangokufanelekileyo kudaka lwesamente kunye neemveliso ezisekelwe kwi-gypsum, kwaye zibophe zonke iinqununu eziqinileyo, kwaye zenze ifilimu yokumanzisa. Amanzi akwisiseko akhululwa ngokuthe ngcembe kwixesha elide. Isixhobo esincitshisiweyo sifumana i-hydration reaction ukuze kuqinisekiswe amandla okudibanisa kunye namandla oxinzelelo lwento. Ke ngoko, kulwakhiwo oluphezulu lobushushu behlobo, ukuze kufezekiswe umphumo wokugcinwa kwamanzi, iimveliso ze-HPMC ezikumgangatho ophezulu kufuneka zongezwe ngobungakanani obaneleyo ngokwefomula, kungenjalo, ukungonelanga kwe-hydration, ukunciphisa amandla, ukuqhekeka, ukugoba kunye nokuwa kubangelwa. ngokomisa ngokugqithisileyo kuya kwenzeka. Kwakhona kwandisa ubunzima bokwakha kubasebenzi. Njengoko iqondo lokushisa liyancipha, inani le-HPMC elongezelelweyo lingancitshiswa ngokuthe ngcembe, kwaye umphumo ofanayo wokugcinwa kwamanzi unokufumaneka.
Ixesha lokuposa: Epreli-25-2020