IHydroxypropyl methylcelluloseI-HPMCi-non-ionic cellulose ether eyenziwe nge-cellulose ye-polymer yemvelo ngochungechunge lokucutshungulwa kwamakhemikhali. Ziyimpushana emhlophe engenaphunga, engenabuthi futhi engenabuthi evuvukala emanzini abandayo ibe isixazululo se-colloidal esicacile noma esilufifi kancane. Inezici zokuqina, ukubopha, ukusabalalisa, i-emulsifying, ukwenza ifilimu, ukumisa okwesikhashana, i-adsorbing, i-gelling, i-surface-active, igcina umswakama kanye ne-colloid evikelayo. I-Hydroxypropyl methylcellulose, i-methylcellulose ingasetshenziswa ezintweni zokwakha, imboni yokuhlanganisa, i-resin yokwenziwa, imboni ye-ceramics, imithi, ukudla, izindwangu, ezolimo, amakhemikhali nsuku zonke nezinye izimboni.
Umphumela wokugcina amanzi kanye nomgomo we-hydroxypropyl methylcellulose HPMC
I-Cellulose ether HPMC idlala indima enkulu yokugcina amanzi kanye nokujiya odakeni lukasimende kanye nodaka olusekelwe ku-gypsum, olungathuthukisa ngempumelelo ukuhlangana nokumelana nokucwila kwe-slurry.
Izinto ezifana nezinga lokushisa lomoya, izinga lokushisa kanye nomfutho womoya zizothinta izinga lokuguquguquka kwamanzi odaka lukasimende kanye nemikhiqizo esekelwe ku-gypsum. Ngakho-ke, ezinkathini ezihlukene zonyaka, kunomehluko othile kumphumela wokugcina amanzi wemikhiqizo enenani elifanayo le-HPMC elingeziwe. Ekwakhiweni okuthile, umphumela wokugcina amanzi we-slurry ungalungiswa ngokwandisa noma ukwehlisa inani le-HPMC elingeziwe. Ukugcinwa kwamanzi kwe-methyl cellulose ether ezingeni lokushisa eliphezulu kuyinkomba ebalulekile yokuhlukanisa ikhwalithi ye-methyl cellulose ether. Imikhiqizo emihle kakhulu yochungechunge lwe-HPMC ingaxazulula ngokuphumelelayo inkinga yokugcinwa kwamanzi ngaphansi kwezinga lokushisa eliphezulu. Ezikhathini zokushisa okuphezulu, ikakhulukazi ezindaweni ezishisayo nezomile kanye nokwakhiwa kongqimba oluncane ohlangothini olushisayo, i-HPMC yekhwalithi ephezulu iyadingeka ukuze kuthuthukiswe ukugcinwa kwamanzi odaka. Ikhwalithi ephezulu ye-HPMC, enokufana okuhle kakhulu, amaqembu ayo e-methoxy kanye ne-hydroxypropoxy asatshalaliswa ngokulinganayo eceleni kweketango lamangqamuzana e-cellulose, elingathuthukisa ikhono lama-athomu omoya-mpilo ku-hydroxyl ne-ether bond ukuze ahlangane namanzi ukuze akhe izibopho ze-hydrogen , ukuze amanzi amahhala aba amanzi abophekile, ukuze alawule ngempumelelo ukuhwamuka kwamanzi okubangelwa izinga lokushisa eliphezulu futhi kuzuzwe ukugcinwa kwamanzi aphezulu.
Ikhwalithi ephezulu ye-cellulose HPMC ingahlakazwa ngokulinganayo nangempumelelo ku-cement mortar kanye nemikhiqizo esekelwe ku-gypsum, futhi ihlanganise zonke izinhlayiya eziqinile, futhi yakha ifilimu yokumanzisa, futhi umswakama osesisekelweni ukhishwa kancane kancane isikhathi eside. Ukusabela kwe-hydration kwe-coagulating material kwenzeka, ngaleyo ndlela kuqinisekiswe amandla okubopha kanye namandla acindezelayo wento. Ngakho-ke, ekwakhiweni kwehlobo lokushisa eliphezulu, ukuze kuzuzwe umphumela wokugcina amanzi, kuyadingeka ukwengeza imikhiqizo yekhwalithi ephezulu ye-HPMC ngokusho kwefomula, ngaphandle kwalokho, kuyoba khona ukugeleza kwamanzi okwanele, ukunciphisa amandla, ukuqhekeka, ukugoba nokuwa. okubangelwa ukoma ngokushesha okukhulu. Kuphinde kwandise ubunzima bokwakha kubasebenzi. Njengoba izinga lokushisa lincipha, inani elingeziwe le-HPMC lingancishiswa kancane kancane, futhi umphumela ofanayo wokugcina amanzi ungafinyelelwa.
Ukugcinwa kwamanzi komkhiqizo we-hydroxypropyl methylcellulose HPMC ngokwawo kuvame ukuthintwa yizinto ezilandelayo:
1. I-cellulose ether HPMC homogeneity
I-HPMC esabela ngokufanayo inokusabalalisa okufanayo kwamaqembu e-methoxy kanye ne-hydroxypropoxy nokugcinwa kwamanzi okuphezulu.
2. I-Cellulose ether HPMC izinga lokushisa elishisayo lejeli
Lapho izinga lokushisa lejeli elishisayo liphakeme, izinga lokugcinwa kwamanzi liphakeme; uma kungenjalo, izinga lokugcinwa kwamanzi liphansi.
3. I-Cellulose ether HPMC viscosity
Lapho i-viscosity ye-HPMC ikhula, izinga lokugcinwa kwamanzi liyanda; lapho i-viscosity ifinyelela ezingeni elithile, ukwanda kwezinga lokugcinwa kwamanzi kuvame ukuba mnene.
4. Inani elingeziwe le-Cellulose ether HPMC
Uma likhulu inani elingeziwe le-cellulose ether HPMC, likhuphuka izinga lokugcinwa kwamanzi kanye nomphumela wokugcina amanzi ube ngcono. Ebangeni lika-0.25-0.6%, izinga lokugcinwa kwamanzi likhuphuka ngokushesha ngokunyuka kwenani elingeziwe; lapho inani elingeziwe likhuphuka, inkambiso ekhulayo yezinga lokugcinwa kwamanzi iba kancane.
Isikhathi sokuthumela: Oct-20-2022