I-Hydroxypropyl Methylcellulose (HPMC) yi-ether ye-cellulose engekho eyenziwe kusuka ku-Natural Polymer Matelioser cellulose ngochungechunge lwezinqubo zamakhemikhali. Bangamaphunga, angenambisi futhi angenambiseki omhlophe we-powder emhlophe egcwele isixazululo esicacile noma esinamafu kancane emanzini abandayo. Inokuqina, ukubopha, ukusabalalisa, ukuhambisa, ukwakha amafilimu, ukumisa amafilimu, ukumisa ama-adsorbing, ukugada, indawo esebenzayo ye-colloid ye-colloid. I-Hydroxypropyllylyl methyllulose kanye ne-methyl cellulose ingasetshenziswa ezintweni zokwakha, imboni yokupenda, i-sonthetic resin, imboni ye-ceramic, umuthi, izindwangu zansuku zonke, izimboni zansuku zonke.
Umphumela wokugcinwa kwamanzi kanye nomgomo we-hydroxypropylllylyll methylcellulose hpmc
I-CelsuleOse Ether HPMC ikakhulukazi idlala indima yokugcinwa kwamanzi futhi ikhule ku-mendertar kasimende kanye ne-gypsum-based slurry, futhi ingathuthukisa ngempumelelo amandla okubumbana kanye nokumelana kwe-slurry.
Izici ezinjengokushisa komoya, izinga lokushisa nejubane lokucindezela komoya lizothinta izinga lokuzithambisa kwamanzi emikhiqizweni yodaka kasimende nemikhiqizo esekwe e-gypsum. Ngakho-ke, ngezinkathi ezahlukahlukene zonyaka, kukhona umehluko othile emthethweni wokugcina amanzi wemikhiqizo ngenani elifanayo le-HPMC elingeziwe. Ekwakhiweni okuthize, umphumela wokugcinwa kwamanzi we-slurry ungashintshwa ngokwanda noma ukwehlisa inani le-HPMC elingeziwe. Ukugcinwa kwamanzi kwe-methyl cellulose ether ngaphansi kwezimo zokushisa okuphezulu kuyinkomba ebalulekile yokuhlukanisa ikhwalithi ye-methyl cellulose ether. Imikhiqizo emihle yochungechunge lwe-HPMC ingaxazulula inkinga yokugcinwa kwamanzi ngaphansi kokushisa okuphezulu. Esikhathini sokushisa esiphakeme, ikakhulukazi ezindaweni ezishisayo nezomile kanye nokwakhiwa kwesendlalelo ohlangothini olunelanga, i-HPMC esezingeni eliphakeme iyadingeka ukuthuthukisa ukugcinwa kwamanzi kwe-slurry. I-HPMC esezingeni eliphakeme inokufana okuhle kakhulu. Amaqembu ayo we-methoxy ne-hydroxypropopoxy asatshalaliswa ngokulinganayo kanye ne-cellulose molecular chain, engathuthukisa amandla ama-athomu omoya-mpilo kuma-hydroxyl kanye ne-ether izibopho zokuzihlanganisa namanzi ukuze ahlangane namanzi e-hydrogen. , ukuze amanzi angenamanzi aboshwe amanzi, ukuze alawule ngempumelelo ukuhwamuka kwamanzi okubangelwa isimo sezulu esiphakeme kakhulu sezulu, futhi kufinyelelwe ukugcinwa kwamanzi okuphezulu.
I-cellulose hpmc ephezulu ye-cellulose hpmc ingahlakazeka ngendlela efanayo futhi ngempumelelo imikhiqizo esekwe omende kanye ne-gypsum esekwe ku-gypsum, futhi yamboza ifilimu eliqinile, futhi umswakama osolwa ngokushesha, umswakama osolwa ngokufanelekileyo, futhi umswakama wangaphambi kwe-hydration azoqinisekisa amandla ebhondi. Ngakho-ke, ekwakhiweni kwehlobo lokushisa okuphezulu, ukuze kufinyelelwe umphumela wokugcina amanzi, kuyadingeka ukwengeza imikhiqizo ye-HPMC ephezulu ngamanani anele ngokuya ngefomula, okuncishisiwe, ukuqhekeka, okukhohlisayo nokuchichima okubangelwa ukomisa ngokweqile. Izinkinga, kepha futhi zandisa ubunzima bezisebenzi. Njengoba amazinga okushisa ehla, inani lamanzi we-HPMC angeziwe angancishiswa kancane kancane, futhi umphumela wokugcina amanzi afanayo angatholakala.
Ukugcinwa kwamanzi kweHydroxyproppropylylylylylylylylylyl hpmc umkhiqizo uqobo uvame ukuthinteka yizinto ezilandelayo:
I-HPMC ephendulwe ngokulinganayo, i-methoxyl ne-hydroxypropoposyls zisatshalaliswa ngokulinganayo, futhi izinga lokugcina lamanzi liphezulu;
Izinga lokushisa le-ger we-cellulose ether HPMC liphezulu, izinga lokugcina amanzi liphezulu; Ngaphandle kwalokho, inani lokugcinwa kwamanzi liphansi;
Lapho i-viscosity ye-cellulose ether hpmc inyuka, izinga lokugcina amanzi liyanda; Lapho i-viscosity ifinyelela ezingeni elithile, ukwanda kwamazinga okugcina amanzi kuvame ukuba mnene;
Lapho inani elikhulu kakhulu le-cellulose ether hpmc elingezwe, liphezulu inani lokugcina amanzi kanye ne-NEP ENDLELA YOKUQHAWULA KWAMANZI. Ngobubanzi bokungezelelwa kwe-0.25-0.6%, inani lokugcina amanzi likhuphuka ngokushesha ngokwanda kwenani lokungezwa; Lapho inani lokungeza liyanda, ukukhuphuka kwenani lokugcinwa kwamanzi lincibilika.
Isikhathi sePosi: Jun-01-2023