Hydroxypropyl methylcellulose (HPMC) ndi cellulose ether yomwe imagwiritsidwa ntchito m'mafakitale osiyanasiyana, kuphatikiza gypsum pomangamanga.Gulu lochita ntchito zambirili limagwira ntchito yofunika kwambiri pakuwongolera magwiridwe antchito komanso mawonekedwe a gypsum plaster.
1. Chiyambi cha HPMC:
Hydroxypropyl methylcellulose ndi chochokera ku chilengedwe cha polima cellulose.Amapangidwa pochiza cellulose ndi propylene oxide ndi methyl chloride.Zotsatira zake ndi polima yosungunuka m'madzi yokhala ndi zinthu zapadera zomwe zimatha kupeza ntchito m'mafakitale osiyanasiyana.
2. Kachitidwe ka HPMC:
Kusungunuka kwamadzi: HPMC imasungunuka mosavuta m'madzi, ndikupanga njira yowonekera komanso yopanda mtundu.
Kupanga filimu: Kupanga mafilimu kumathandiza kupanga filimu yoteteza pamwamba.
Thermal gelation: HPMC imalowa mu reversible thermal gelation, kutanthauza kuti imatha kupanga gel pa kutentha kwambiri ndikubwerera ku yankho ikazizira.
Viscosity: Kukhuthala kwa yankho la HPMC kumatha kusinthidwa kutengera kuchuluka kwa m'malo ndi kulemera kwa maselo.
3. Kugwiritsa ntchito HPMC mu gypsum:
Kusungirako madzi: HPMC imagwira ntchito ngati chosungira madzi mu gypsum, kuteteza kutaya madzi mofulumira panthawi yokonzekera.Izi zimakulitsa kuwongolera komanso kumapereka moyo wautali wogwiritsa ntchito.
Kumamatira Kwabwino: Zopanga filimu za HPMC zimathandizira kumamatira kwa stucco ku magawo osiyanasiyana, ndikupanga mgwirizano wolimba.
Consistency Control: Poyang'anira mamasukidwe a gypsum osakaniza, HPMC imathandizira kusasinthika kwa ntchito, kuwonetsetsa kutha kwa yunifolomu.
Kulimbana ndi Mng'alu: Kugwiritsa ntchito HPMC mu pulasitala kumathandizira kusinthasintha komanso kumachepetsa mwayi wa ming'alu pazomwe zamalizidwa.
Kukhazikitsa Nthawi: HPMC imatha kukhudza nthawi yoyika gypsum kotero kuti ikhoza kusinthidwa kuti ikwaniritse zofunikira za pulogalamuyo.
4. Mlingo ndi kusakaniza:
Kuchuluka kwa HPMC komwe kumagwiritsidwa ntchito mu gypsum kumadalira zinthu zosiyanasiyana monga katundu wofunidwa, kupanga gypsum ndi zofunikira zogwiritsira ntchito.Kawirikawiri, amawonjezeredwa kusakaniza kowuma panthawi yosakaniza.Njira zosakanikirana ndizofunikira kwambiri kuti zitsimikizire kufalikira kofanana komanso kugwira ntchito bwino.
5.Kugwirizana ndi chitetezo:
HPMC n'zogwirizana ndi zosiyanasiyana zina zina ntchito pulasitala formulations.Kuphatikiza apo, imawonedwa ngati yotetezeka kuti igwiritsidwe ntchito pazomangira ndipo imagwirizana ndi malamulo oyenera.
6. Mapeto:
Hydroxypropyl methylcellulose (HPMC) imagwira ntchito yofunikira pakuwongolera magwiridwe antchito a gypsum plaster.Makhalidwe ake apadera amathandizira kukonza magwiridwe antchito, kumamatira komanso mtundu wonse wa pulasitala.Chowonjezera chomwe chimagwiritsidwa ntchito kwambiri pantchito yomanga, HPMC imakhalabe gawo lofunikira pamapangidwe apamwamba a pulasitala.
Nthawi yotumiza: Jan-19-2024