Hydroxypylmmyl methylcellulose (hpmc) omwe amagwiritsidwa ntchito polima-polymer omwe amagwiritsidwa ntchito kwambiri popanga zida zomangira, makamaka ma tiile omata a Smenti. Mankhwala apadera ndi zinthu zapadera za HPMC zimapangitsa kuti azichitapo kanthu pokonza, zomangamanga, ndi kulimba kwa zomata za matayala.
(1) Chidziwitso choyambira cha HPMC
1. Kapangidwe ka HPMC
HPMC ndi cellulose yopezeka mwa kusintha kwa cellulose mwachilengedwe. Kapangidwe kake kamapangidwa ndi methoxy (-och₃) ndi hydroxypropoxy (-ch₂choch₃) amasintha magulu ena a hydroxyl pa unyolo wa cellulose. Kapangidwe kameneka kamapatsa mphamvu ya HPMC yabwino ndi kuthekera kwa hydraction.
2. Mphamvu za HPMC
Kusungunuka: HPMC imatha kusungunuka m'madzi ozizira kuti apange yankho lowonekera la colloidal ndipo ili ndi hydration ndi luso lakumwamba.
Thermoget: hpmc yankho la HPMC lidzapanga gel osakaniza mukamacheza ndikubwerera ku madzi mutazizira.
Zochitika Pamaso: HPMC ili ndi ntchito yabwino mu yankho, zomwe zimathandiza kupanga mawonekedwe okhazikika.
Izi zakuthupi ndi mankhwala zimapangitsa kuti hpmc ikhale yabwino kusintha ma tiile omata a sile.
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1. Sinthani kusungidwa kwamadzi
Mfundo: HPMC imapanga ma network a viscous mu yankho, lomwe limatha kutseka mu chinyezi. Kutha kwa madzi kumeneku kumachitika chifukwa cha magulu ambiri a hydrophilic (monga magulu a hydroxyl) mu mamolekyulu a HPMC, omwe amatha kuyanjani ndikusunga chinyezi chachikulu.
Sinthani zomatira: Zingwe zomata za sile zimafuna chinyezi kutenga nawo mbali munthawi yaukali. HPMC imasungabe kupezeka kwa chinyezi, kulola simenti kuti ikhale hydrate kwathunthu, potero kumathandizira chizungulire chomatira cha zomatira.
Pafupi Nthawi Yotseguka: Kusungidwa kwamadzi kumalepheretsa zomatira kuti zisafoke mwachangu pakumanga, ndikusintha nthawi yosinthira masile.
2. Sinthani magwiridwe antchito
Mfundo Yofunika Kukula Kwambiri, ndipo mamolekyulu ake amatha kupanga ma network ngati am'madzi, potero akuwonjezera ufa wa yankho.
Sinthani katundu wa odana ndi mbiri yakale.
Kusintha madzimadzi: chidwi choyenera chimapangitsa kuti zotsatsa zizigwiritsa ntchito ndikufalikira panthawi yomanga, ndipo nthawi yomweyo imakhala ndi mwayi wabwino, kuchepetsa zovuta zomanga.
3. Kulimbikitsa Kulimbikitsidwa
Mfundo Yofunika: HPMC imathandizira kusungidwa kwamadzi ndi kutsatira kwa zomatira, potengera kukonza kulimba kwa matayala a sile.
Sinthani Mphamvu Yogwiriritsa: Gawo lolimba la simenti limapereka zomatira zomatira ndipo sizikuyenda bwino pakugwiritsa ntchito nthawi yayitali.
Kuthetsa Kukana: Kusunga kwamadzi kumapeputsa zomatira zazikulu pakumatira nthawi youma powuma, potero kuchepetsa vuto lakuyatsidwa chifukwa cha shliza.
(3) Chithandizo cha Data
1. Kuyesera kwamadzi
Kafukufuku wasonyeza kuti kusunga madzi kutsatsa mapime omata a sile ndi kuwonjezera kwa HPMC kumasintha kwambiri. Mwachitsanzo, kuwonjezera 0,2% hpmc ku zomatira kumatha kuwonjezera kuchuluka kwamadzi kuyambira 70% mpaka 95%. Kusintha kumeneku ndikofunikira kukonza mphamvu ndi kulimba kwa zomatira.
2. Kuyesa kwa Viscton
Kuchuluka kwa hpmc kuwonjezeredwa kumakhala ndi vuto lalikulu pa mafayilo. Kuphatikiza 0.3% hpmc to zomatira za sile kumatha kuwonjezera mapangidwe kangapo, onetsetsani kuti zomatira zimakhala ndi ntchito yabwino yotsutsa.
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Mwa zoyesayesa zofananira, zidapezeka kuti kugwirizanitsa pakati pa matailosi ndi magawo a zomatira zomwe zili ndi HPMC kuli bwino kuposa zomatira zopanda HPMC. Mwachitsanzo, mutatha kuwonjezera 0,5% hpmc, mphamvu yolumikizana imatha kuwonjezeka ndi 30%.
(4) Zitsanzo za ntchito
1. Kugona kwa matailosi apansi ndi makoma a khoma
Mu kuyika kwa matailosi otsika pansi ndi matanga, zomata za HPMC-zotsatsa za sile zomwe zidapanga magwiridwe antchito abwino komanso kugwiririra kosatha. Panthawi yomanga, zododometsa sizophweka kutaya madzi mwachangu, ndikuonetsetsa zomangamanga ndi mawonekedwe a matailosi.
2. Khoma lakunja lakumanja
Zochita za HPMC-zopambana zimagwiritsidwanso ntchito kwambiri pamakina akunja. Madzi ake abwinobwino amadzi ndi kutsatira mwamphamvu pakati pa bolodi yotchinga ndi khoma, potero amalimbikitsa kulimba mtima ndi kukhazikika kwa khoma lakumanja.
Kugwiritsa ntchito HPMC mu zomata za sile zomata kwambiri kumasintha magwiridwe antchito. Pokonza madzi osungirako madzi, anathandizira kugwira ntchito ndi kukonza magwiridwe antchito, hpmc amapanga zomatira ndi matanthwe a sile yoyenera pazinthu zamakono zomanga. Ndi chitukuko cha ukadaulo ndi kufunika kowonjezereka kwa zinthu zomanga zapamwamba, chiyembekezo cha ntchito cha HPMC chidzakhala chowonjezera.
Post Nthawi: Jun-26-2024