Hydroxypropyl methyl selulose HPMC ni ether idafite ionic selulose ether ikozwe muri polymer naturel selile selile binyuze murwego rwo gutunganya imiti. Ni ifu yera itagira impumuro nziza, idafite uburyohe kandi idafite uburozi bwabyimbye mumuti usobanutse cyangwa uhindagurika gato mumazi akonje. Ifite ibiranga kubyimba, guhuza, gutatanya, emulisation, gukora firime, guhagarikwa, adsorption, gelation, ibikorwa byubutaka, kugumana ubushuhe hamwe na colloid ikingira. Hydroxypropyl methylcellulose irashobora gukoreshwa mubikoresho byubwubatsi, inganda zitwikiriye, ibisigazwa byubukorikori, inganda zubutaka, ubuvuzi, ibiryo, imyenda, ubuhinzi, inganda zimiti ya buri munsi nizindi nganda.
Igikorwa cyo gufata amazi nihame: selulose ether HPMC igira uruhare runini mu gufata amazi no kubyimba muri sima ya sima na gypsumu ishingiye ku gihuru, gishobora kunoza neza imbaraga zihuza hamwe no kurwanya sag. Ibintu nkubushyuhe bwikirere, ubushyuhe numuvuduko wumuyaga bizagira ingaruka kumuvuduko wamazi mumazi ya sima nibicuruzwa bishingiye kuri gypsumu. Kubwibyo, mu bihe bitandukanye, hari itandukaniro mubikorwa byo gufata amazi yibicuruzwa bimwe bya HPMC. Mu bwubatsi bwihariye, ingaruka zo gufata amazi ya slurry zirashobora guhinduka mukwongera cyangwa kugabanya umubare wa HPMC wongeyeho.
Kugumana amazi ya methyl selulose ether mubihe byubushyuhe bwo hejuru nikimenyetso cyingenzi cyo gutandukanya ubwiza bwa methyl selulose ether. Ibicuruzwa byiza bya HPMC birashobora gukemura neza ikibazo cyo gufata amazi mubushyuhe bwinshi. Mu bihe by'ubushyuhe bwinshi, cyane cyane ahantu hashyushye kandi humye no kubaka ibice bito ku ruhande rw'izuba, HPMC yo mu rwego rwo hejuru irasabwa kunoza uburyo bwo gufata neza amazi.
HPMC yo mu rwego rwo hejuru ifite uburinganire bwiza cyane. Amatsinda ya methoxy na hydroxypropoxy agabanijwe neza kumurongo wa selile ya selile, ushobora kuzamura ubushobozi bwa atome ya ogisijeni kuri hydroxyl na ether ihuza amazi kugirango ikore hydrogene. , Kugira ngo amazi yubusa ahinduke amazi aboshye, bityo agenzure neza ihinduka ryamazi yatewe nubushyuhe bwo hejuru, kandi agere kumazi menshi.
Cellulose yo mu rwego rwohejuru HPMC irashobora gukwirakwizwa kimwe kandi neza mugisima cya sima hamwe nibicuruzwa bishingiye kuri gypsumu, hanyuma ugapfunyika ibice byose bikomeye, hanyuma ugakora urwego rwa firime itose. Amazi muri base arekurwa buhoro buhoro mugihe kirekire. Ibikoresho byegeranye bigira hydrata reaction, kugirango habeho imbaraga zo guhuza imbaraga nimbaraga zo kwikuramo ibintu. Kubwibyo, mubwubatsi bwubushyuhe bwo hejuru bwubushyuhe, kugirango tugere ku ngaruka zo gufata amazi, ibicuruzwa byiza bya HPMC bigomba kongerwaho ubwinshi bihagije ukurikije formulaire, bitabaye ibyo, hydrated idahagije, kugabanya imbaraga, guturika, gutobora no kugwa bizabaho kubera gukama cyane. Ibibazo, ariko kandi byongera ingorane zabakozi bubaka. Mugihe ubushyuhe bugabanutse, umubare wa HPMC wongeyeho urashobora kugabanuka buhoro buhoro, kandi ingaruka zimwe zo gufata amazi zirashobora kugerwaho.
Kugumana amazi ya HPMC bigira ingaruka ku bintu bikurikira:
1. Guhuza ibitsina bya selile ether HPMC
Muri HPMC yakiriye kimwe, amatsinda ya methoxy na hydroxypropoxy aragabanijwe neza, kandi igipimo cyo gufata amazi ni kinini.
2. Ubushyuhe bwa gel ubushyuhe bwa selile ether HPMC
Ubushyuhe bwa gel ubushyuhe buri hejuru, igipimo cyo gufata amazi ni kinini; kurundi ruhande, igipimo cyo gufata amazi kiri hasi.
3. Viscosity ya selulose ether HPMC
Iyo ubwiza bwa HPMC bwiyongereye, igipimo cyo gufata amazi nacyo cyiyongera; iyo ibishishwa bigeze kurwego runaka, kwiyongera k'igipimo cyo gufata amazi bikunda kuba byiza.
4. Kwiyongera kwa selile ether HPMC
Umubare munini wa selile ether HPMC wongeyeho, niko igipimo cyo gufata amazi ningaruka nziza yo gufata amazi. Mu ntera ya 0.25-0,6% yongeyeho, igipimo cyo gufata amazi cyiyongera vuba hamwe no kwiyongera kwinshi; iyo amafaranga yiyongereye arushijeho kwiyongera, kwiyongera kwikigero cyo gufata amazi biratinda.
Igihe cyo kohereza: Ukuboza-16-2021