HPMC muri plaster ya gypsum

Hydroxypropyl Methylcellulose (HPMC)ni eteri ya cellulose idafite ionic, ikoreshwa cyane mu bikoresho by'ubwubatsi, cyane cyane mu byuma byumye bivanze, kole y'amatafari, ifu ya putty n'ibikomoka kuri gypsum.

1. Incamake ya plaster ya gypsum

Plasta ya Gypsum ni ibikoresho byo kugereka ku rukuta aho plasta y’ubwubatsi ari yo sima nyamukuru, ifite ibyiza byo kubaka byoroshye, kuma vuba no kubungabunga ibidukikije. Dukurikije igipimo cy’inyongera zitandukanye, ibicuruzwa bifite imiterere itandukanye nko gusigwa n'intoki, gusukura plasta ya Gypsum na plasta yigenga birashobora gutegurwa. Nubwo plasta ya Gypsum mu buryo busanzwe ifite uburyo bwo gufatana no gukomera, iracyafite ibibazo nko kutabika amazi neza, gucikamo ibice byoroshye no kubaka nabi mu gihe cyo kubaka, bityo ni ngombwa kongeramo ibikoresho bikwiye byahinduwe kugira ngo inoze imikorere yayo yose.

2. Uburyo HPMC ikora

Kubera ko polymer ishongesha amazi neza cyane, HPMC irushaho kunoza imikorere ya plaster ya gypsum binyuze mu ngingo zikurikira:

2.1. Kurushaho kubika amazi:

HPMC ifite ubushobozi bwo kubika amazi neza kandi ishobora kugabanya cyane igipimo cy’amazi ya gypsum mu gihe cyo kubaka. Iki kintu ni ingenzi cyane mu kongera igihe cyo gushyiraho gypsum no kunoza igihe cyo kubaka, cyane cyane ku bushyuhe bwinshi cyangwa ku bice by’ibanze bitonyanga cyane, bishobora kwirinda gucika no kugabanuka k’uburyo bufatana.

2.2. Imirimo yo kubaka no gukora neza:

HPMC ishobora kongera imiterere n'ubushyuhe bw'urutare, bigatuma plasta ya gypsum irushaho kuba nziza mu gihe cyo gusigwa no kuringaniza inkuta, ikagabanya ubushobozi bw'ibikoresho kandi ikanoza imikorere myiza y'ubwubatsi. Ku bijyanye na gypsum iterwa n'imashini, HPMC ni urwego rw'ingenzi mu kugenzura rheology.

2.3. Kongera ubushobozi bwo kurwanya kugwa:

Mu bwubatsi bw'inkuta nini cyangwa iy'uburebure, kongeramo HPMC bishobora kongera cyane imikorere ya sima idacika, bigatuma igumana imiterere myiza kandi idashobora kugwa.

2.4. Gukomera kw'ibiceri no gukwirakwira kimwe:

Udupfumu duto tuba tworoshye mu gihe cyo kuvanga. HPMC ishobora gushimangira utu dupfumu, ibyo bikaba ingirakamaro mu kugabanya ubucucike bwa sima no kunoza imikorere yo gukingira ubushyuhe, ariko ntibizagira ingaruka ku miterere yatwo.

2.5. Guhuza neza:

HPMC ishobora gukora imiterere ya filime ihindagurika hagati ya gypsum na substrate, bityo ikarushaho kunoza imikorere yo gufatanya no kugabanya ibibazo by’ubwiza nko gushwanyagurika no gushishwa.

3. Ibyifuzo ku mikoreshereze ya HPMC n'ibipimo byayo

Ubusanzwe HPMC yongerwa mu mvange yumye ya gypsum mu buryo bw'ifu kandi ikavangwa neza n'ibindi bice (nk'umusenyi woroshye, umucanga wa quartz, retarder, nibindi) binyuze mu kuvanga yumye. Ingano yayo isanzwe igenzurwa kuri 0.1% ~ 0.3% (ishingiye ku bikoresho byumye), kandi igipimo cyihariye kigomba kunozwa no guhindurwa hakurikijwe ibintu nk'uburyo bw'ibicuruzwa, uburyo bw'ubwubatsi n'ikirere.

Mu gutera gypsum, kugira ngo hongerwe uburyo bworoshye bwo kubaka no koroshya imashini, hashobora gutoranywa HPMC ifite ubunini bwo gusimbuza kandi ifite ubukana bukwiye (nk'ubunini bwa 50.000100.000 mPa.s), mu gihe muri gypsum ikozwe mu ntoki, hashobora gutoranywa ubwoko bw'ubukana buringaniye (20.00060.000 mPa.s) kugira ngo harebwe imiterere y'ubwubatsi n'ubushobozi bwo kwirinda kugwa.

4. Ingorane n'imbogamizi

Nubwo HPMC yazanye ibyiza byinshi kuri plaster ya gypsum, ingingo zikurikira zigomba kwitabwaho mu gihe cyo gushushanya no gukoresha imvange:

Gukwirakwira mu buryo bumwe: HPMC igomba gukwirakwira neza kugira ngo hirindwe kwivanga, kandi ingaruka zayo zishobora kunozwa no kuvanga byumye cyangwa mbere yo gushonga.

Guhuza n'izindi nyongeramusaruro: HPMC igomba gukorana neza n'ibikoresho bigabanya amazi, ibikoresho bigabanya ubushyuhe, n'ibindi kugira ngo hirindwe ingaruka mbi.

Guhitamo neza ubukana: ubukana bwinshi ntabwo ari bwo bwiza. Ubukana bwinshi cyane butera ingorane zo kuvanga, ubukana buke, ndetse bukagira ingaruka ku mikorere y'imashini.

Bitewe n’iterambere ry’ibikoresho by’ubwubatsi bihumanya ibidukikije no gukwirakwiza imashini, ibisabwa mu mikorere ya plasta ya gypsum nabyo biriyongera. HPMC izakomeza kugira uruhare runini mu kugenzura imikorere y’ubwubatsi no kunoza ubuziranenge. Muri icyo gihe, ibikoresho bya eteri ya cellulose byahinduwe bizakoreshwa hamwe naHPMCkuzuza ibisabwa byihariye by'imikorere, nka sisitemu yo guhuza HPMC / HEMC n'imikorere myinshiifu ya latex ishobora kongera gushongaumuti uvanze, kugira ngo ufashe ibicuruzwa bya gypsum gutera imbere mu cyerekezo cyo gukora neza no gukora ibintu byinshi.