HPMC (Hydroxypropyl Methylcellulose) ndi chowonjezera chomwe chimagwiritsidwa ntchito pomanga pulasitala, makamaka pakuwongolera kukana kwamadzi, katundu wa rheological ndi ntchito yomanga pulasitala.
1. Kupititsa patsogolo kasungidwe ka madzi pa pulasitala
HPMC ndi madzi sungunuka polima pawiri kuti akhoza kupanga maukonde dongosolo simenti kapena gypsum ofotokoza pulasitala. Kapangidwe kameneka kamathandizira kusunga madzi ndikulepheretsa simenti kapena gypsum kutaya madzi mwachangu panthawi yowumitsa, potero kupewa kusweka kapena kuchepetsa kukana madzi. Powonjezera kuchuluka koyenera kwa HPMC pa pulasitala, njira ya hydration ya simenti imatha kuchedwa, kupangitsa pulasitala kukhala ndi luso losunga madzi. The hydrate opangidwa ndi simenti pa ndondomeko hydration amafuna madzi okwanira kulimbikitsa anachita. Kuchedwetsa kutayika kwa madzi kumatha kupititsa patsogolo kachulukidwe ndi anti-malowedwe azinthu zomaliza.
2. Sinthani kumamatira ndi kachulukidwe ka pulasitala
Monga polima zowonjezera, HPMC akhoza kumapangitsanso rheological zimatha pulasitala, komanso bwino adhesion ake. HPMC ikawonjezeredwa, mphamvu yomangirira ya pulasitala imakulitsidwa, yomwe imathandiza kuti ikhale yomatira mwamphamvu ku gawo lapansi (monga njerwa, konkire kapena gypsum khoma). Nthawi yomweyo, HPMC imapangitsa pulasitala kukhala yolimba kwambiri panthawi yowumitsa, kuchepetsa kupezeka kwa ma pores a capillary. Ma pores ochepa amatanthauza kuti ndizovuta kwambiri kuti madzi alowe, potero kumawonjezera kukana kwa madzi kwa pulasitala.
3. Kulimbikitsa permeability kukana
Mapangidwe a mamolekyu a HPMC amatha kupanga chinthu chofanana ndi colloid mu pulasitala, kulola pulasitala kuti ipange mawonekedwe ofananirako panthawi yakuchiritsa. Kapangidwe kake kakamakula, pulasitala pamwamba pake imakhala yosalala komanso yowuma, ndipo madzi amachepa. Chifukwa chake, kukana kwamadzi kwa pulasitala kumakhala bwino, makamaka m'malo onyezimira kapena odzaza madzi, kuwonjezera kwa HPMC kumatha kuletsa chinyezi kulowa khoma kudzera pansanjika ya pulasitala.
4. Kupititsa patsogolo kukhazikika ndi kutetezedwa kwa madzi
Kukana madzi kumadalira osati pa mphamvu ya madzi ya zinthu zakuthupi, komanso zogwirizana kwambiri ndi kapangidwe ka mkati mwa pulasitala. Powonjezera HPMC, kukhazikika kwakuthupi ndi kwamankhwala kwa pulasitala kumatha kusintha. HPMC bwino mankhwala dzimbiri kukana pulasitala ndi kupewa dzimbiri simenti chifukwa cha kulowa madzi. Makamaka pakumizidwa m'madzi kwanthawi yayitali kapena m'malo achinyezi, HPMC imathandizira kukulitsa moyo wautumiki wa pulasitala ndikuwonjezera zotsutsana ndi ukalamba.
5. Sinthani mamasukidwe akayendedwe ndi magwiridwe antchito
Mtengo wa HPMC alinso ndi ntchito ya kusintha mamasukidwe akayendedwe ndi rheological katundu. Pomanga kwenikweni, kukhuthala koyenera kungapangitse kuti pulasitala ikhale yovuta kuyenda ikagwiritsidwa ntchito, ndipo imatha kutsekedwa mofanana pakhoma popanda kuchititsa kuti pulasitala igwe pomanga chifukwa cha chinyezi chochuluka. Poyang'anira ntchito ya pulasitala, ogwira ntchito yomanga amatha kuwongolera kufanana kwa pulasitala, potero kumapangitsa kuti pulasitala isalowe madzi.
6. Limbikitsani kukana ming'alu
Panthawi yomanga, pulasitala imakonda kuchepa chifukwa cha zinthu zakunja monga kusintha kwa kutentha ndi kusinthasintha kwa chinyezi, zomwe zimayambitsa ming'alu. Kukhalapo kwa ming'alu sikumangokhudza maonekedwe a pulasitala, komanso kumapereka njira yolowera madzi. Kuphatikizika kwa HPMC kumatha kukulitsa kulimba kwa pulasitala, ndikupangitsa kuti ikhale yolimba yolimbana ndi ming'alu panthawi yowumitsa, potero kupeŵa chinyezi kulowa mkati mwa ming'alu ndikuchepetsa chiwopsezo cha kulowa kwamadzi.
7. Kupititsa patsogolo kusinthasintha ndi kupanga mosavuta
Kuwonjezera kwa HPMC kungapangitsenso pulasitala kukhala yosinthika kwambiri pa nyengo zosiyanasiyana. Pamalo otentha kwambiri, chinyontho cha pulasitala chimasanduka nthunzi mofulumira kwambiri ndipo chimakonda kusweka. Kukhalapo kwa HPMC kumathandizira pulasitala kusunga madzi pamalo owuma, kotero kuti liwiro lake lakuchiritsa liwongoleredwa komanso ming'alu ndi kuwonongeka kosanjikiza madzi komwe kumachitika chifukwa cha kuyanika mwachangu kumapewedwa. Kuphatikiza apo, HPMC imathanso kuwongolera kumamatira kwa pulasitala, kuti ikhale yomatira bwino pamagawo osiyanasiyana oyambira ndipo sizovuta kugwa.
HPMC imagwira ntchito yofunikira pakuwongolera kukana kwamadzi kwa pulasitala, makamaka kudzera m'magawo awa:
Kusunga madzi: kuchedwetsa kuyanika kwa simenti, kusunga chinyezi, ndikupewa kuyanika mwachangu.
Kumamatira ndi kachulukidwe: onjezerani kumamatira kwa pulasitala pamwamba pamunsi ndikupanga mawonekedwe owundana.
Permeability kukana: kuchepetsa pores ndi kupewa kulowa madzi.
Kukhalitsa komanso kusalowa madzi: sinthani kukhazikika kwazinthu komanso kukhazikika kwazinthu ndikukulitsa moyo wautumiki.
Kulimbana ndi mng'alu: kuonjezera kulimba kwa pulasitala ndikuchepetsa mapangidwe a ming'alu.
Kuthekera kwa zomangamanga: Sinthani mawonekedwe a rheological a pulasitala ndikuwongolera magwiridwe antchito pakumanga. Choncho, HPMC si zowonjezera kuti ntchito yomanga pulasitala, komanso bwino madzi kukana pulasitala kudzera njira zingapo, kuti pulasitala akhoza kukhala bata wabwino ndi yaitali durability m'madera osiyanasiyana nkhanza.
Nthawi yotumiza: Nov-20-2024