HPMC (Hydroxypropyl Methylcellulose) yomwe imagwiritsidwa ntchito mumatope osakaniza owuma ndi chinthu chofunika kwambiri cha mankhwala, chomwe chimagwiritsidwa ntchito ngati thickener, madzi osungira madzi ndi kupanga mafilimu. HPMC ndi non-ionic cellulose ether yopangidwa kuchokera ku cellulose yachilengedwe posintha mankhwala. Amagwiritsidwa ntchito kwambiri muzomangamanga, makamaka mumatope osakaniza owuma.
1. Basic katundu wa HPMC
HPMC ndi polima pawiri mu mawonekedwe a ufa woyera kapena opanda woyera, ndi makhalidwe sanali kawopsedwe, odorlessness ndi solubility wabwino. Ikhoza kusungunuka m'madzi ozizira kuti ipange njira yowonekera kapena yamkaka pang'ono ya viscous, ndipo imakhala yokhazikika komanso yomatira. HPMC ali katundu sanali ionic, kotero izo akhoza kusintha kwa zosiyanasiyana TV, makamaka m'madera zamchere. Ikhozabe kukhalabe ndi ntchito yake ndipo sichimakonda kusintha kwa mankhwala.
Makhalidwe akuluakulu a HPMC ndi awa:
Kusunga madzi: Imatha kusunga chinyezi m'zinthu, kutalikitsa nthawi yowumitsa, ndikupangitsa kuti zomangamanga zikhale zosavuta.
Kukulitsa mphamvu: Powonjezera kukhuthala kwa matope, ntchito yake yomanga imakulitsidwa kuti zisagwe komanso kuyenda.
Mphamvu yothira mafuta: Sinthani magwiridwe antchito azinthu ndikupangitsa kuti matope azikhala osalala panthawi yomanga.
Katundu wopangira filimu: Panthawi yowumitsa matope, filimu yofanana imatha kupangidwa, yomwe imathandiza kuti zinthu zikhale bwino.
2. Udindo wa HPMC mumatope osakaniza owuma
Muzomangamanga, matope owuma (omwe amadziwikanso kuti premixed mortar) ndi ufa wouma womwe umapangidwa bwino mufakitale. Pomanga, zimangofunika kusakaniza ndi madzi pamalopo. HPMC nthawi zambiri imawonjezedwa kuti ipititse patsogolo ntchito yake yomanga, kuwonjezera nthawi yogwira ntchito ndikuwongolera mtundu wa chinthu chomaliza. Makamaka, ntchito ya HPMC mumtondo wosakanizika ndi izi:
Konzani kasungidwe ka madzi
Mu matope, kugawa yunifolomu ndi kusungidwa kwa madzi ndiye chinsinsi chowonetsetsa kuti mphamvu zake zimakhala zolimba, zomangirira ndikugwira ntchito. Monga chosungira madzi, HPMC imatha kutseka madzi mumtondo ndikuchepetsa kutayika kwa madzi. Izi ndizofunikira makamaka pazinthu monga simenti ndi gypsum zomwe zimafuna hydration reaction. Ngati madzi atayika mofulumira kwambiri, zinthuzo sizingathe kumaliza hydration reaction, zomwe zimapangitsa kuchepa kwa mphamvu kapena ming'alu. Makamaka pansi pa kutentha kwakukulu, kuuma kapena kuyamwa kwambiri, mphamvu yosungiramo madzi ya HPMC imatha kupititsa patsogolo ntchito yomanga ndi kutha kwa matope.
Limbikitsani ntchito yomanga
Kugwira ntchito kwa matope kumakhudza mwachindunji kumasuka kwa ntchito panthawi yomanga. HPMC imathandizira kukhuthala komanso kununkhira kwa matope, kupangitsa kuti ikhale yosavuta kugwira ntchito panthawi yomanga. Kaya ndi kupukulidwa, kufalikira kapena kupopera mankhwala, matope omwe ali ndi HPMC amatha kukhala bwino komanso ogwirizana ndi malo omanga, potero kumapangitsa kuti ntchito yomanga ikhale yabwino komanso kuchepetsa zinyalala.
Limbikitsani zomatira ndi anti-sagging katundu
Kukhuthala kwa HPMC kumalola kuti matopewo amamatire mwamphamvu pakumanga kwa facade ndipo samakonda kugwa kapena kutsetsereka. Izi ndizofunikira makamaka pazogwiritsidwa ntchito monga matope omangira matayala, matope opaka mkati ndi kunja kwa khoma. Makamaka pomanga wosanjikiza matope, ntchito yomatira ya HPMC imatha kutsimikizira kukhazikika kwa matope ndikupewa vuto la matope osanjikiza chifukwa cha kulemera kwakukulu kwakufa.
Wonjezerani nthawi yotsegula
Pakumanga kwenikweni, nthawi yotseguka (ie, nthawi yogwira ntchito) yamatope ndiyofunikira kuti nyumbayo ikhale yabwino. Makamaka muzochitika zazikulu zomanga, ngati matope auma mofulumira, zingakhale zovuta kuti ogwira ntchito yomanga amalize ntchito zonse, zomwe zimapangitsa kuti pakhale kusalingana kwapamwamba. HPMC ikhoza kuwonjezera nthawi yotseguka yamatope, kuwonetsetsa kuti ogwira ntchito yomanga ali ndi nthawi yokwanira yosintha ndikugwira ntchito.
3. Ubwino wa ntchito HPMC
Kusinthasintha kwakukulu
HPMC angagwiritsidwe ntchito kwambiri mu mitundu yosiyanasiyana ya matope osakaniza youma, monga matope matope, pulasitala matope, matailosi zomatira, self-leveling matope, etc. ntchito yokhazikika.
Otsika kuwonjezera, mkulu dzuwa
Kuchuluka kwa HPMC nthawi zambiri kumakhala kochepa (pafupifupi 0.1% -0.5% ya ufa wonse wouma), koma zotsatira zake zowonjezera ntchito ndizofunika kwambiri. Izi zikutanthawuza kuti ntchito yomanga ndi khalidwe la matope likhoza kusintha kwambiri popanda kuonjezera ndalama zambiri.
Okonda zachilengedwe komanso osawononga
HPMC palokha si poizoni, fungo, ndipo saipitsa chilengedwe. Ndi kupititsa patsogolo chidziwitso cha chilengedwe, kufunikira kwa zomangira zobiriwira kukukulirakulira. HPMC, monga chowonjezera chotetezeka komanso chogwirizana ndi chilengedwe, chimakwaniritsa miyezo yachilengedwe ya zida zamakono zomangira.
4. Njira zopewera kugwiritsa ntchito
Ngakhale HPMC imagwira ntchito yofunika kwambiri mumatope osakaniza owuma, mfundo zotsatirazi ziyenera kudziwidwa pakagwiritsidwe ntchito:
Kuwongolera kwa Solubility: HPMC iyenera kuwonjezeredwa pang'onopang'ono m'madzi pakugwedeza kuti mupewe kuphatikizika chifukwa cha kusungunuka kosagwirizana, komwe kumakhudza zotsatira zomaliza za matope.
Mphamvu ya kutentha: Kusungunuka kwa HPMC kumatha kukhudzidwa ndi kutentha. Kutentha kwambiri kapena kutsika kwamadzi kungayambitse kusintha kwa kusungunuka, motero kumakhudza nthawi yomanga ndi zotsatira za matope.
Kuphatikiza ndi zina zowonjezera: HPMC nthawi zambiri imagwiritsidwa ntchito ndi zina zowonjezera mankhwala, monga zochepetsera madzi, mpweya wolowetsa mpweya, ndi zina zotero. Popanga ndondomekoyi, tcheru chiyenera kulipidwa ku chikoka chapakati pakati pa zigawozo kuti tipewe zotsatira zoipa.
Kugwiritsa ntchito HPMC mumatope osakaniza owuma kuli ndi ubwino wambiri. Itha kupititsa patsogolo magwiridwe antchito amatope pothandizira kusunga madzi, kukulitsa ntchito yomanga, komanso kumamatira. Pakuwongolera bwino kwa zomangamanga komanso zofunikira pamakampani omanga, HPMC, ngati chowonjezera chofunikira chamankhwala, itenga gawo lofunikira kwambiri pamatope osakanizika.
Nthawi yotumiza: Oct-09-2024