Hydroxypropyl methylcellulose (hpmc)Ndilo nyumba yofunika yowonjezera, yomwe imagwiritsidwa ntchito kwambiri matope a simenti, zokutira ndi minda ina. HPMC imachita mbali yofunika kwambiri m'matope a matope, ndipo imatha kusintha kwambiri kugwirira ntchito, madzimadzi, zotsatsa komanso kuphwanya matope. Makamaka pamakonzedwe amakono, imagwira ntchito yothandiza kukonza mtundu wa matope ndi kapangidwe ka matope.
1. Makhalidwe oyambira a HPMC
HPMC ndi yochokera kwa cellulose yosinthidwa ndi machulidwe apanja, ndi madzi abwino osungunuka, zotsatsa ndi zokumba. Mamolekyulu olefutsira a Evancence®h Ntchito zake zazikulu zimaphatikizapo kukula, kusungidwa kwamadzi, kukonza rheology ndi kutsatsa matope, etc.
2. Tanthauzo ndi kufunikira kwa kusungidwa kwamadzi
Kusunga kwamadzi kwa matope kumatanthauza kuthekera kwa matope kuti asunge madzi pomanga. Kutayika kwa madzi mu matope mwachindunji kumakhudza kulimba kwake, kulimba ndi kumaliza ntchito. Madzi akatuluka mwachangu kwambiri, simenti ndi zina zopangira matope sizikhala ndi nthawi yokwanira yothana ndi mavuto othandiza, zomwe zimapangitsa kuti mphamvu zosagwirizana ndi zosungunuka. Chifukwa chake, kusungidwa kwa madzi ndiko njira yofunikira kuwonetsetsa kuti matope.
3. Mphamvu ya HPMC pa Survar Kusunga kwamadzi
Kuphatikiza kwa HPMC ku matope kumatha kusintha kwambiri kusungidwa kwamadzi kwa matope, komwe kumawonekera mwachindunji mgawo:
(1) Kuwongolera kuchuluka kwa madzi osungika
HPMC imatha kupanga mawonekedwe a hadrogel ngati matope, omwe amatha kuyamwa ndikusunga madzi ambiri, poyerekeza ndi madzi. Makamaka mukamamanga kutentha kwakukulu kapena malo owuma, kugwiritsa ntchito madzi ku HPMC kumakhala ndi gawo lofunikira. Pokonza madzi osungidwa, hpmc amatha kuwonetsetsa kuti madzi m'mwemo amatha kutenga nawo mbali mokwanira munthawi ya matope ndikusintha mphamvu yamatope.
(2) Kukonza madzi ndi mwayi wa matope
Panthawi yomanga, matope akufunika kukhalabe ndi madzi ena kuti azitsogolera ntchito yomanga. Kusungidwa kwabwino kwamadzi kumatha kuchepetsa kuthamanga kwa matope, kumapangitsa kuti zikhale zochulukirapo komanso zosavuta zomanga ogwira ntchito kuti azichita opareshoni monga kuwonongeka. Kuphatikiza apo, HPMC imatha kusintha mafayilo a matope ndikuletsa kulekanitsidwa ndi matope kapena storimet, motero kusunga umodzi wake.
(3) Kuletsa kuwonongeka kwa matope
HPMC itasintha madzi osungira matope, imatha kuchepetsa madzi ofulumira pamtanda ndikuchepetsa chiopsezo cha kusweka. Makamaka m'malo okhala ndi kutentha kwambiri kapena chinyezi chochepa, madzi osintha madzi amatha kuyambitsa ming'alu pachimato. HPMC imathandizira kuwongolera matope osenda matope mwa kuchepa kwa kuchepa kwa madzi, kusunga umphumphu wa matope ndikupewa mapangidwe a ming'alu.
(4) Kupitilira nthawi yotseguka kwa matope
Nthawi yotseguka ya matope imanena za nthawi yomwe matope atha kugwiritsidwa ntchito pomanga. Nthawi yayifupi kwambiri yotseguka imakhudza luso la zokambirana. Kuphatikiza kwa HPMC kumatha kupitirira nthawi yotseguka kwa matope, kupereka ndalama zomanga, ogwira ntchito nthawi yambiri kuti agwire ntchito monga kukanda ndi kuwononga. Makamaka mu malo omanga omanga, kutalikirana nthawi yotseguka kumatha kuonetsetsa kutengera ndi kuterera kwa matope.
4. Chimango cha HPMC champhamvu cha HPMC pa kusungidwa kwamadzi
Zochita zazikulu za HPMC pakukonzanso matope matope ndi motere:
(1) hydration ndi kapangidwe kake
Ma molekyulu a HPMC ali ndi kuchuluka kwa hydrophilic hydroxyl (-Oh) ndi hydroxypropyl (-KoOh) magulu a hydroxypropyl (-KoOh) Kuphatikiza apo, HPMC ili ndi kapangidwe kambiri kamoleko ndipo imatha kupanga mawonekedwe atatu okhala ndi matope, omwe amatha kugwira ndikusunga madzi ndikuchepetsa madzi opopera.
(2) Kuchulukitsa kusasinthasintha ndi matope a matope
Matanda akadawonjezedwa ku matope ngati wokulirapo, zimachulukitsa kusinthasintha ndi mapangidwe ake, ndikupanga matonthowo komanso kuchepetsa kuchepa kwa madzi. Makamaka pamalo opangira zomangamanga, kusintha kwakukulu kwa HPMC kumathandizira kukonza matope a anti-ofota.
(3) Sinthani kukhazikika kwa matope
HPMC imatha kukulitsa chilupe cha matope ndikuwongolera kukhazikika kwa matope kudzera munjira yake yolumikizirana. Kukhazikika kumeneku kumathandizira chinyezi cha matope kuti chisungidwe pakati pa tinthu tating'onoting'ono tanthawi yayitali, potero ndikuwonetsetsa kuti simenti ndi madzi ndikuwonjezera mphamvu yamatope.
5. Mphamvu ya hpmc mu mapulogalamu othandiza
Ntchito zothandiza,HpmcNthawi zambiri amagwiritsidwa ntchito limodzi ndi zina zowonjezera (monga mapira owonjezera, osamwa, etc.) kuti akwaniritse matope abwino. Kudzera mu malingaliro oyenera, hpmc amatha kusewera maudindo osiyanasiyana m'mitundu yosiyanasiyana ya matope. Mwachitsanzo, matope wamba, sitatope, matope owuma, etc., amatha kusintha mosamala madzi osungira madzi ndi matope ena.
Udindo wa HPMC ku malita sungathe kuchepetsedwa. Imasintha kwambiri mtundu wa matope pokonza madzi posungira matope a matope, ndikuwonjezera nthawi yotseguka, ndikuwongolera magwiridwe antchito. M'madera amakono, powonjezera zovuta za umisilo yomanga ndi kusinthasintha kwa matope pazofunikira, hpmc, monga chowonjezera, ndikusewera gawo lofunikira kwambiri.
Post Nthawi: Feb-15-2025