Hydroxypropyl methylcellulose, yitwa: HPMC cyangwa MHPC. Ibigaragara ni ifu yera cyangwa yera-ifu; imikoreshereze nyamukuru ni nkikwirakwiza mugukora polyvinyl chloride, kandi nikintu nyamukuru gifasha mugutegura PVC muguhagarika polymerisation. Mubikorwa byubwubatsi bwinganda zubaka, bikoreshwa cyane mubwubatsi bwimashini nko kubaka urukuta, guhomesha, gutobora, nibindi.; cyane mubwubatsi bwo gushushanya, bikoreshwa mugushiraho amabati yubutaka, marble, na plastike. Ifite imbaraga nyinshi zo guhuza kandi irashobora kugabanya urugero rwa sima. . Ikoreshwa nkibyimbye mu nganda zisiga amarangi, zishobora gutuma urwego ruba rwiza kandi rworoshye, kurinda kuvanaho ifu, kunoza imikorere iringaniye, nibindi.
Muri sima ya sima na gypsumu ishingiye kuri slurry, hydroxypropyl methylcellulose igira uruhare runini mu gufata amazi no kubyimba, ibyo bikaba bishobora guteza imbere imbaraga zifatika hamwe no guhangana nigituba.
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 hydroxypropyl methylcellulose 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 hydroxypropyl methylcellulose 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 agabanijwe neza kumurongo wa selile ya selile, ushobora 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.
Amazi arakenewe kugirango hydrasiyo ashyireho ibikoresho bya sima nka sima na gypsumu. Umubare nyawo wa HPMC urashobora kugumana ubuhehere muri minisiteri igihe kirekire bihagije kugirango igenamigambi no gukomera bikomeze.
Umubare wa HPMC usabwa kugirango ubone amazi ahagije biterwa na:
1. Kwinjira kwurwego rwibanze
2. Ibigize minisiteri
3. Uburebure bwa Mortar
4. Gukenera amazi ya minisiteri
5. Igihe cyo gushiraho ibikoresho bya gelling
Hydroxypropyl methylcellulose yo mu rwego rwo hejuru irashobora gukwirakwizwa kimwe kandi neza mugisima cya sima hamwe nibicuruzwa bishingiye kuri gypsumu, hanyuma ugapfunyika ibice byose bikomeye, hanyuma ugakora firime itose, kandi ubuhehere buri munsi bukarekurwa buhoro buhoro mugihe kirekire, kandi hydration reaction hamwe nibikoresho bya gorganic organique kugirango tumenye imbaraga zihuza 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.
Igihe cyo kohereza: Mutarama-16-2023