Ihame ryakazi rya hydroxypropyl methylcellulose muri minisiteri

Hydroxypropyl methylcellulose (HPMC)ni ifumbire mvaruganda polymer ikoreshwa cyane mubikorwa byubwubatsi, cyane cyane mumabuye ashingiye kuri sima, gypsumu ishingiye kuri minisiteri hamwe na tile. Nka nyongeramusaruro, HPMC irashobora kunoza imikorere yubwubatsi, kunoza imikorere, gufatira hamwe, gufata amazi no guhangana na minisiteri, bityo bikazamura ubwiza rusange bwa minisiteri.

1. Ibintu shingiro bya HPMC

HPMC iboneka cyane cyane muguhindura etherification ya selile, kandi ifite amazi meza, kubyimba, gukora firime, amavuta no gutuza. Ibintu byingenzi byingenzi bifatika birimo:

Amazi meza: Irashobora gushonga mumazi akonje cyangwa ashyushye kugirango ibe igisubizo kiboneye cyangwa cyoroshye.
Ingaruka yibyibushye: Irashobora kongera cyane ubwiza bwigisubizo kandi ikerekana ingaruka nziza yo kubyibuha mukutitonda kwinshi.
Kubika amazi: HPMC irashobora gukuramo amazi no kubyimba, kandi ikagira uruhare mukubungabunga amazi muri minisiteri kugirango amazi atakara vuba.
Imiterere ya rheologiya: Ifite thixotropy nziza, ifasha kunoza imikorere yubwubatsi bwa minisiteri.

2. Uruhare runini rwa HPMC muri minisiteri

Uruhare rwa HPMC muri minisiteri rugaragarira cyane cyane mu bice bikurikira:

2.1 Kunoza uburyo bwo gufata amazi ya minisiteri

Mugihe cyubwubatsi bwa sima ya sima, niba amazi azimye vuba cyangwa yakiriwe cyane na base, bizatera reaction ya sima idahagije kandi bigira ingaruka kumikurire. HPMC ikora imiterere imwe meshi muri minisiteri ikoresheje hydrophilique hamwe no kwinjiza amazi hamwe nubushobozi bwo kwaguka, gufunga amazi, kugabanya gutakaza amazi, bityo bikongerera igihe cyo gufungura minisiteri no kunoza imiterere yubwubatsi.

2.2 Ingaruka yibyibushye, kunoza imikorere ya minisiteri

HPMC ifite ingaruka nziza yo kubyimba, ishobora kongera ubwiza bwa minisiteri, bigatuma minisiteri igira plastike nziza, kandi ikarinda minisiteri gutandukana, gutandukanya no kuva amaraso. Muri icyo gihe, umubyimba ukwiye urashobora kunoza iyubakwa rya minisiteri, bikoroha kuyikoresha no kuringaniza mugihe cyubwubatsi, no kunoza imikorere yubwubatsi.

2.3 Kongera ubumwe no kunoza ifatizo rya minisiteri

Mubisabwa nka tile adhesive, masonry mortar na plaster, imbaraga zo guhuza minisiteri ningirakamaro. HPMC ikora firime imwe ya polymer hagati yigitereko nigifuniko binyuze mubikorwa byo gukora firime, bitezimbere imbaraga zihuza za minisiteri na substrate, bityo bikagabanya ibyago byo guturika no kugwa.

2.4 Kunoza imikorere yubwubatsi no kugabanya sag

Kuburyo bwubatswe bwubatswe (nko guhomeka kurukuta cyangwa kubaka tile yometseho), minisiteri ikunda kugabanuka cyangwa kunyerera kubera uburemere bwayo. HPMC yongerera imbaraga umusaruro hamwe na anti-sag ya minisiteri, kugirango minisiteri irusheho kwizirika hejuru yikibanza mugihe cyubwubatsi buhagaritse, bityo bitezimbere ubwubatsi.

2.5 Kongera imbaraga zo guhangana no kunoza igihe kirekire

Mortar ikunda gucika kubera kugabanuka mugihe cyo gukomera, bigira ingaruka kumiterere yumushinga. HPMC irashobora guhindura imihangayiko yimbere ya minisiteri no kugabanya igipimo cyo kugabanuka. Muri icyo gihe, mu kunoza imiterere ya minisiteri, ifite uburyo bwiza bwo guhangana n’imihindagurikire y’ubushyuhe cyangwa imihangayiko yo hanze, bityo bikazamura igihe kirekire.

2.6 Hindura igihe cyagenwe cya minisiteri

HPMC igira ingaruka mugihe cyo gushiraho minisiteri muguhindura umuvuduko wa sima hydrata reaction. Umubare ukwiye wa HPMC urashobora kongera igihe cyubwubatsi bwa minisiteri kandi ukemeza ko igihe cyo guhinduka gihagije mugihe cyubwubatsi, ariko gukoresha cyane birashobora kongera igihe cyagenwe kandi bikagira ingaruka kubikorwa byumushinga, bityo dosiye igomba kugenzurwa neza.

3. Ingaruka ya dosiye ya HPMC kumikorere ya minisiteri

Igipimo cya HPMC muri minisiteri muri rusange ni gito, mubisanzwe hagati ya 0.1% na 0.5%. Igipimo cyihariye giterwa n'ubwoko bwa minisiteri n'ibisabwa kubaka:

Igipimo gito (≤0.1%): Irashobora kunoza amazi kandi ikongerera gato imikorere ya minisiteri, ariko ingaruka zo kubyimba ni ntege.

Igipimo giciriritse (0.1% ~ 0.3%): Itezimbere cyane gufata amazi, gufatira hamwe no kurwanya kugabanuka kwa minisiteri kandi byongera imikorere yubwubatsi.

Igipimo kinini (≥0.3%): Bizongera cyane ubwiza bwa minisiteri, ariko birashobora kugira ingaruka kumazi, bikongerera igihe cyagenwe, kandi ntibikwiye kubakwa.

Nka nyongera yingirakamaro kuri minisiteri,HPMCigira uruhare runini mugutezimbere gufata amazi, kunoza imikorere yubwubatsi, kongera imbaraga hamwe no guhangana. Kwiyongera neza kwa HPMC birashobora kunoza cyane imikorere rusange ya minisiteri no kuzamura ireme ryumushinga. Mugihe kimwe, dosiye igomba kugenzurwa kugirango birinde ingaruka mbi mugushiraho igihe nubwubatsi bwubwubatsi. Mugihe kizaza, hamwe niterambere rihoraho ryinganda zubwubatsi, ibyifuzo bya HPMC mubikoresho bishya byubaka bizaba binini.