Uruhare nihame ryo gufata amazi ya hydroxypropyl methylcellulose HPMC

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 byoroheje mumazi akonje. Ifite umubyimba, guhambira, gutatanya, kwigana, gukora firime, guhagarika, adsorbing, gell, hejuru yubutaka, kugumana ubushuhe no kurinda colloid. Hydroxypropyl methylcellulose na methylcellulose irashobora gukoreshwa mubikoresho byubaka, inganda zisiga amarangi, resinike yubukorikori, inganda zubutaka, ubuvuzi, ibiryo, imyenda, ubuhinzi, imiti ya buri munsi nizindi nganda.

Hydroxypropyl methylcellulose HPMC igereranya imiti:
[C6H7O2 (OH) 3-mn (OCH3) m (OCH2CH (OH) CH3) n] x

Ingaruka yo gufata amazi nihame rya hydroxypropyl methylcellulose HPMC:
Cellulose ether HPMCahanini igira uruhare 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 bwinshi 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 methoxyl na hydroxypropoxyl akwirakwizwa neza murwego rwa selile ya selile, ishobora kuzamura ubushobozi bwa atome ya ogisijeni kuri hydroxyl na ether ihuza amazi kugirango ikore imigozi ya hydrogen. , 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:

1. Guhuza selile ya ether HPMC
HPMC iringaniye, metoxyl na hydroxypropoxyl iragabanijwe neza, kandi igipimo cyo gufata amazi ni kinini.

2. Cellulose ether HPMC ubushyuhe bwa gel
Iyo ubushyuhe bwa gel ubushyuhe buri hejuru, niko igipimo cyo gufata amazi kiri hejuru; bitabaye ibyo, gabanya igipimo cyo gufata amazi.

3. Cellulose Ether HPMC Viscosity
Iyo ubwiza bwa HPMC bwiyongereye, igipimo cyo gufata amazi nacyo cyiyongera; iyo viscosity igeze kurwego runaka, kwiyongera k'igipimo cyo gufata amazi bikunda kuba byoroheje.

4. Ongeraho umubare wa 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 kwinyongera; iyo amafaranga yiyongereye arushijeho kwiyongera, ubwiyongere bwikigero cyo gufata amazi kiratinda.