Kudaka lwesamente kunye nodaka olusekwe kwigypsum,ihydroxypropyl methylcelluloseubukhulu becala idlala indima yokugcinwa kwamanzi kunye nokuqina, okunokuphucula ngokufanelekileyo ukudibanisa kunye nokuxhatshazwa kwe-slurry.Izinto ezifana nobushushu bomoya, ubushushu kunye noxinzelelo lomoya ziyakuchaphazela izinga lokumka kwamanzi kudaka lwesamente kunye neemveliso ezisekwe kwigypsum.Ngoko ke, ngamaxesha ahlukeneyo, kukho ukungafani kwisiphumo sokugcinwa kwamanzi kwiimveliso ezinomlinganiselo ofanayo we-hydroxypropyl methylcellulose eyongeziweyo.Kulwakhiwo oluthile, umphumo wokugcinwa kwamanzi we-slurry unokulungiswa ngokunyuka okanye ukunciphisa inani le-HPMC elongezelelweyo.Ukugcinwa kwamanzi kwe-methyl cellulose ether kwiqondo lokushisa eliphezulu luphawu olubalulekileyo lokuhlukanisa umgangatho we-methyl cellulose ether.
Iimveliso ezigqwesileyo ze-hydroxypropyl methylcellulose zinokucombulula ngempumelelo ingxaki yokugcinwa kwamanzi kwiqondo lokushisa eliphezulu.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, kunye nokufana okuhle kakhulu, amaqela ayo e-methoxy kunye ne-hydroxypropoxy asasazwa ngokulinganayo kunye nekhonkco ye-cellulose ye-molecular chain, enokuphucula amandla e-athom ze-oksijini kwi-hydroxyl kunye ne-ether bonds ukudibanisa namanzi ukwenza iibhondi ze-hydrogen , ukuze amanzi akhululekileyo aba ngamanzi abophekileyo, ukuze kulawulwe ngokufanelekileyo ukufuduka kwamanzi okubangelwa yimozulu yobushushu obuphezulu kunye nokufezekisa ukugcinwa kwamanzi aphezulu.Amanzi ayafuneka ukuze kufakwe amanzi ukuze kusete izixhobo zesamente ezifana nesamente kunye negypsum.Isixa esichanekileyo se-HPMC sinokugcina amanzi kudaka ixesha elide ngokwaneleyo ukuvumela ukusetwa kunye nenkqubo yokuqina ukuba iqhubeke.
Isixa se-HPMC esifunekayo ukufumana umthamo owaneleyo wokugcina amanzi sixhomekeke koku:
1. I-absorbency yomgangatho wesiseko
2. Ukuqulunqwa kodaka
3. Ubukhulu bodaka
4. Imfuneko yamanzi yodaka
5. Ixesha lokumiselwa kwemathiriyeli yesamente
Umgangatho ophezulu we-hydroxypropyl methylcellulose unokuchithwa ngokulinganayo kwaye uhlakazeke ngokufanelekileyo kwi-samente yodaka kunye neemveliso ezisekelwe kwi-gypsum, kwaye zibophe zonke iinqununu eziqinileyo, kwaye zenze ifilimu yokumanzisa, kwaye ukufuma kwisiseko kukhululwa ngokuthe ngcembe ixesha elide., kunye nokuphendula kwe-hydration kwenzeka kunye ne-inorganic cementitious material, ngaloo ndlela iqinisekisa amandla okubambisana kunye namandla okunyamezela kwezinto.
umfanekiso
Ke ngoko, ekwakhiweni kwehlobo lobushushu obuphezulu, ukuze kufezekiswe umphumo wokugcinwa kwamanzi, kuyimfuneko ukongeza iimveliso ze-HPMC ezikumgangatho ophezulu ngobungakanani obaneleyo ngokwefomula, ngaphandle koko, kuya kubakho ukungonelanga kwe-hydration, ukunciphisa amandla, ukuqhekeka, umngxuma kunye nokuwa okubangelwa kukomisa ngokukhawuleza.Kwakhona kwandisa ubunzima bokwakha kubasebenzi.Njengoko iqondo lobushushu liyehla, isixa esongezelelweyo se-HPMC sinokuncitshiswa ngokuthe ngcembe, kwaye umphumo ofanayo wokugcinwa kwamanzi unokufumaneka.
Ixesha lokuposa: Oct-20-2022