Ukuthandwa kolwazi lwe-hydroxypropyl methylcellulose HPMC

I-Hydroxypropyl 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 ngokuphumelelayo 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 ukhululwa 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.