Hydroxypropyl methylcellulose (HPMC) ndi chowonjezera chosunthika chomwe chimagwiritsidwa ntchito kwambiri pantchito yomanga, makamaka popanga pulasitala.Plasta ya Gypsum, yomwe imadziwikanso kuti pulasitala wa ku Paris, ndi nyumba yotchuka yomwe imagwiritsidwa ntchito kumatira makoma ndi kudenga.HPMC imagwira ntchito yofunikira pakuwongolera magwiridwe antchito ndi ntchito ya pulasitala ya gypsum.
HPMC ndi non-ionic cellulose ether yotengedwa kuchokera ku cellulose yachilengedwe ya polima kudzera muzosintha zingapo zamankhwala.Amapangidwa pochiza cellulose ndi propylene oxide ndi methyl chloride.Chotsatiracho ndi ufa woyera umene umasungunuka m'madzi ndipo umapanga njira yowonekera yowonekera.
Nazi zina mwazinthu zazikulu za HPMC pa pulasitala:
1. Kusunga madzi:
Imodzi mwa ntchito zazikulu za HPMC mu gypsum ndi mphamvu yake yosungira madzi.Zimathandiza kupewa kutaya msanga kwa chinyezi panthawi yowumitsa, zomwe zimapangitsa kuti pakhale kuwongolera komanso kuyika pulasitala.Izi ndizofunikira kuti mukwaniritse mphamvu yofunikira komanso kusasinthasintha kwa pulasitala.
2. Konzani kachitidwe:
HPMC imakulitsa kugwirira ntchito kwa pulasitala ya gypsum popereka nthawi yabwino yotseguka komanso kukana kuterera.Izi zimapangitsa kuti zikhale zosavuta kuyika ndi kufalitsa stucco pamwamba, zomwe zimapangitsa kuti zikhale zosalala, zomaliza.
3. Kulumikizana ndi kulumikizana:
HPMC imathandizira kumamatira kwa gypsum pulasitala ku magawo osiyanasiyana.Imawongolera kumamatira pakati pa stucco ndi pansi, kuonetsetsa kuti kutha kwanthawi yayitali komanso kolimba.Komanso, HPMC kumawonjezera mgwirizano wa pulasitala palokha, potero kuwonjezera mphamvu ndi kuchepetsa akulimbana.
4. Kukulitsa zotsatira:
Mu gypsum formulations, HPMC amachita monga thickener, zimakhudza mamasukidwe akayendedwe a gypsum osakaniza.Kukhuthala kumeneku ndikofunikira kwambiri kuti mukwaniritse kukhazikika komanso kapangidwe kake panthawi yogwiritsira ntchito.Zimathandizanso kuti stucco asagwere kapena kugwa pamalo oyimirira.
5. Khazikitsani nthawi:
Kuwongolera nthawi yoyika gypsum pulasitala ndikofunikira kwambiri pamapangidwe omanga.HPMC ikhoza kusintha nthawi yokhazikitsira kuti ipereke kusinthasintha kuti ikwaniritse zofunikira za polojekiti.Izi ndizofunikira kwambiri pamapulojekiti akuluakulu omwe angafunike nthawi zosiyanasiyana zokhazikitsa.
6. Mmene porosity:
Kukhalapo kwa HPMC kumakhudza porosity ya gypsum.Chopangidwa bwino pulasitala ndi HPMC akhoza kuonjezera kukana madzi kulowa ndi kuchepetsa porosity, potero kuonjezera durability ndi kukana zinthu zachilengedwe.
7. Kugwirizana ndi zina zowonjezera:
HPMC n'zogwirizana ndi zosiyanasiyana zina zambiri ntchito gypsum formulations.Kusinthasintha kumeneku kumapangitsa kuti zosakaniza za pulasitala zisinthidwe kuti zikwaniritse zofunikira zantchito komanso zofunikira pakugwiritsa ntchito.
8. Zoganizira zachilengedwe:
HPMC nthawi zambiri imawonedwa ngati yotetezeka komanso yosamalira zachilengedwe.Sichiwopsezo ndipo sichitulutsa zinthu zovulaza panthawi kapena pambuyo popaka pulasitala.Izi zikugwirizana ndi kugogomezera komwe kukukulirakulira kwa njira zomanga zokhazikika komanso zothandiza zachilengedwe.
Hydroxypropyl methylcellulose (HPMC) imagwira ntchito yofunika kwambiri pakuwongolera magwiridwe antchito a gypsum pomanga.Kusungidwa kwa madzi ake, kuwongolera magwiridwe antchito, kumamatira, kukulitsa mphamvu, kuwongolera nthawi, kuwongolera kwa porosity, kuyanjana ndi zina zowonjezera komanso malingaliro achilengedwe kumapangitsa kuti ikhale chowonjezera chofunikira pamapangidwe apamwamba kwambiri a gypsum.Pamene ntchito zomanga zikupitilirabe, HPMC ikadali chinthu chofunikira kwambiri pakuwongolera bwino komanso kulimba kwa pulasitala ya gypsum pama projekiti osiyanasiyana omanga ndi zomangamanga.
Nthawi yotumiza: Jan-22-2024