IHydroxypropyl methylcelluloseHPMCyi-ether ye-cellulose engeyo-ionic eyenziwe kwi-cellulose ye-polymer yendalo yendalo ngokusebenzisa uchungechunge lwe-chemical processing.Azinavumba, azinancasa kwaye zingumgubo omhlophe ongenatyhefu odumba emanzini abandayo ukuya kwisisombululo se-colloidal esicacileyo okanye esimnyama kancinci.Ineempawu zokuqina, ukubopha, ukusabalalisa, i-emulsifying, ifilimu-ifom, ukumisa, i-adsorbing, i-gelling, i-surface-active, igcina umswakama kunye ne-colloid ekhuselayo.I-Hydroxypropyl methylcellulose, i-methylcellulose ingasetyenziselwa kwizinto zokwakha, i-coating industry, i-synthetic resin, i-ceramics industry, amayeza, ukutya, i-textile, ezolimo, iikhemikhali zemihla ngemihla kunye namanye amashishini.
Isiphumo sokugcinwa kwamanzi kunye nomgaqo we-hydroxypropyl methylcellulose HPMC
I-Cellulose ether HPMC idlala indima enkulu yokugcina amanzi kunye nokuqina kwi-cement mortar kunye ne-gypsum-based slurry, enokuthi iphucule ngokufanelekileyo ubumbano kunye nokuxhathisa kwe-slurry.
Izinto ezifana nobushushu bomoya, ubushushu kunye noxinzelelo lomoya ziya kuchaphazela izinga lokuguquguquka kwamanzi kudaka lwesamente kunye neemveliso ezisekelwe kwigypsum.Ke ngoko, ngamaxesha ahlukeneyo, kukho umahluko kwisiphumo sokugcinwa kwamanzi kwiimveliso ezinobungakanani obufanayo be-HPMC bongeziweyo.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-HPMC zinokusombulula ngempumelelo ingxaki yokugcinwa kwamanzi phantsi kobushushu obuphezulu.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.
Umgangatho ophezulu we-cellulose we-HPMC unokuthi uhlakazwe ngokulinganayo kwaye ngokufanelekileyo kwiimveliso ze-samente kunye ne-gypsum-based based, kwaye ifake zonke iinqununu eziqinileyo, kwaye zenze ifilimu yokumanzisa, kwaye ukufuma kwisiseko kukhishwa ngokuthe ngcembe kwixesha elide.I-hydration reaction ye-coagulating material iyenzeka, ngaloo ndlela iqinisekisa amandla okudibanisa kunye namandla oxinzelelo lwezinto.Ke ngoko, kulwakhiwo lobushushu obuphezulu ehlotyeni, ukuze kufezekiswe umphumo wokugcinwa kwamanzi, kuyimfuneko ukongeza iimveliso ze-HPMC ezikumgangatho ophezulu ngokwefomula, kungenjalo kuya kubakho ukungonelanga kwe-hydration, ukunciphisa amandla, ukuqhekeka, ukugoba 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.
Ukugcinwa kwamanzi kwe-hydroxypropyl methylcellulose HPMC imveliso ngokwayo ihlala ichatshazelwa zezi zinto zilandelayo:
1. Iselulosi ether HPMC homogeneity
I-HPMC ephendule ngokufanayo inokusasazwa okufanayo kwamaqela e-methoxy kunye ne-hydroxypropoxy kunye nokugcinwa kwamanzi aphezulu.
2. Cellulose ether HPMC thermal gel lobushushu
Ukuphakama kobushushu bejeli ye-thermal, kuphezulu izinga lokugcinwa kwamanzi;kungenjalo, isantya esezantsi yokugcina amanzi.
3. Iselulosi ether HPMC viscosity
Xa i-viscosity ye-HPMC inyuka, izinga lokugcinwa kwamanzi liyenyuka;xa i-viscosity ifikelela kwinqanaba elithile, ukunyuka kwezinga lokugcinwa kwamanzi kudla ngokuba mnene.
4. Imali eyongeziweyo yeSelulosi ether HPMC
Ubukhulu bexabiso elongeziweyo le-cellulose ether HPMC, liphezulu izinga lokugcinwa kwamanzi kwaye ngcono isiphumo sokugcina amanzi.Kuluhlu lwe-0.25-0.6%, izinga lokugcinwa kwamanzi landa ngokukhawuleza ngokunyuka kwenani elongezelelweyo;xa isixa-mali esongeziweyo sinyuka ngakumbi, indlela eyandayo yokugcinwa kwamanzi iyacotha.
Ixesha lokuposa: Oct-20-2022