Hydroxypropyl methylcellulose (HPMC) ni ether ya selile idafite ionic ikozwe muri polymer naturel ya selile isanzwe ikoresheje uburyo bwa chimique.Ni ifu yera itagira impumuro nziza, itaryoshye kandi idafite ubumara bwabyimbye mubisubizo bisobanutse cyangwa bicu byoroheje byamazi mumazi akonje.Ifite umubyimba, guhambira, gutatanya, kwigana, gukora firime, guhagarika, adsorbing, gell, hejuru yubutaka, kugumana ubushuhe no kurinda colloid.Hydroxypropyl methyl selulose na methyl selulose irashobora gukoreshwa mubikoresho byubaka, inganda zisiga amarangi, resinike yubukorikori, inganda zubutaka, ubuvuzi, ibiryo, imyenda, ubuhinzi, imiti ya buri munsi nizindi nganda.
Ingaruka yo gufata amazi nihame rya hydroxypropyl methylcellulose HPMC
Cellulose ether HPMC igira uruhare runini mu gufata amazi no kubyimba muri sima ya sima na gypsumu ishingiye kuri slurry, kandi irashobora kunoza neza imbaraga zifatika hamwe no kurwanya sag.
Ibintu nkubushyuhe bwikirere, ubushyuhe numuvuduko wumuyaga bizagira ingaruka kumuvuduko wamazi mumazi ya sima nibicuruzwa bishingiye kuri gypsumu.Kubwibyo, mubihe bitandukanye, hariho itandukaniro mubikorwa byo gufata amazi yibicuruzwa hamwe na HPMC yongeyeho.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 munsi yubushyuhe 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 akwirakwizwa neza murwego rwa selile ya molekile ya selile, ishobora kuzamura ubushobozi bwa atome ya ogisijeni kuri hydroxyl na ether ihuza amazi kugirango ikore hydrogene., kugirango amazi yubusa ahinduke amazi aboshye, kugirango agenzure neza ihinduka ryamazi yatewe nikirere cyinshi, kandi agere kumazi menshi.
Cellulose yo mu rwego rwohejuru HPMC irashobora gukwirakwizwa kimwe kandi neza mubutaka bwa sima na gypsumu, hanyuma igapfunyika ibice byose bikomeye, hanyuma igakora firime itose, ubuhehere buri mukibanza burekurwa buhoro buhoro igihe kirekire, hamwe na kole ya organique The hydration reaction yibikoresho byegeranijwe bizemeza imbaraga zumubano nimbaraga zo kwikuramo ibintu.Kubwibyo, mubwubatsi bwubushyuhe bwo hejuru, kugirango tugere ku ngaruka zo gufata amazi, birakenewe ko hongerwaho ibicuruzwa byiza bya HPMC muburyo buhagije ukurikije formulaire, bitabaye ibyo, hazabaho hydrated idahagije, imbaraga zigabanuka, guturika, gutobora no kumena biterwa no gukama cyane.ibibazo, ariko kandi byongere ingorane zo kubaka abakozi.Mugihe ubushyuhe bugabanutse, ubwinshi bwamazi HPMC yongeyeho burashobora kugabanuka buhoro buhoro, kandi ingaruka zimwe zo gufata amazi zirashobora kugerwaho.
Kugumana amazi ya hydroxypropyl methylcellulose HPMC ubwayo ikunze kwibasirwa nimpamvu zikurikira:
HPMC iringaniye, mikorobe na hydroxypropoxyl iragabanijwe neza, kandi igipimo cyo gufata amazi ni kinini;
Cellulose ether HPMC ubushyuhe bwa gel ni ubushyuhe, igipimo cyo gufata amazi ni kinini;bitabaye ibyo, igipimo cyo gufata amazi kiri hasi;
Iyo ubwiza bwa selile ether HPMC bwiyongereye, igipimo cyo gufata amazi nacyo cyiyongera;iyo viscosity igeze kurwego runaka, kwiyongera k'igipimo cyo gufata amazi bikunda kuba byoroheje;
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 kwinyongera;iyo amafaranga yinyongera arushijeho kwiyongera, kwiyongera kwikigero cyo gufata amazi biratinda.
Igihe cyo kohereza: Jun-01-2023