Hydroxypropyl methylcellulose (HPMC) ndi etha ya cellulose yomwe imagwiritsidwa ntchito ngati chowonjezera muzinthu zopangidwa ndi simenti. Makhalidwe ake osunthika amapangitsa kuti ikhale yamtengo wapatali pamagwiritsidwe osiyanasiyana pamakampani omanga. Ntchito zazikulu za HPMC mu simenti ndi:
1. Kusunga madzi:
Ntchito: HPMC imagwira ntchito posungira madzi.
Zofunika: Zimalepheretsa kutuluka kwamadzi mwachangu mumsanganizo wa simenti, kuwonetsetsa kuti madzi okwanira akupezeka kuti hydration ya tinthu tating'ono ta simenti. Izi zimathandiza kukonza magwiridwe antchito ndikupanga konkriti yomaliza yolimba komanso yolimba.
2. Kukula ndi rheology control:
Ntchito: HPMC imagwira ntchito ngati thickener ndikuthandizira pakuwongolera ma rheology.
Chofunika: Poyang'anira kukhuthala kwa simenti kusakaniza, HPMC imathandiza kupewa kupatukana ndi kukhazikika kwa tinthu tating'onoting'ono. Imakulitsa magwiridwe antchito ndi magwiridwe antchito azinthu zopangidwa ndi simenti, zomwe zimapangitsa kuti zikhale zosavuta kuzigwira.
3. Konzani kumamatira:
Ntchito: HPMC imathandizira kumamatira.
Zofunika: Kuphatikizika kwa HPMC kumathandizira kumamatira pakati pa zida za simenti ndi magawo osiyanasiyana. Izi ndizofunikira kwambiri pazogwiritsa ntchito monga zomatira za matailosi, komwe kumamatira mwamphamvu ndikofunikira kuti pakhale moyo wautali komanso magwiridwe antchito a tile pamwamba.
4. Khazikitsani nthawi:
Ntchito: HPMC imathandiza kulamulira nthawi ya clotting.
Chofunika: M’pofunika m’ntchito yomanga kusintha nthaŵi yoikika kuti ikwaniritse zofunika zinazake. HPMC imatha kukonza bwino nthawi yoyika zinthu zopangidwa ndi simenti, ndikupangitsa kuti pakhale kusinthasintha kwazinthu zosiyanasiyana.
5. Wonjezerani maola otsegulira:
Ntchito: HPMC imakulitsa nthawi yotsegulira.
Zofunika: Nthawi yotsegula ndi nthawi yomwe zida za simenti zimakhalabe zogwiritsidwa ntchito pambuyo pomanga. HPMC yawonjezera nthawiyi kuti ipangitse kugwiritsa ntchito ndikusintha zinthuzo kukhala zosavuta.
6. Kukana kwa mng'alu:
Ntchito: HPMC imathandizira kukana ming'alu.
Chofunika: Powonjezera kusinthasintha ndi kumamatira kwa matrix a simenti, HPMC imathandizira kuchepetsa kuthekera kwa ming'alu ya zinthu zochiritsidwa. Izi ndizopindulitsa makamaka m'malo omwe kusintha kwa kutentha kapena kusuntha kwapangidwe kungachitike.
7. Chepetsani kuchepa:
Zomwe zimachita: HPMC imathandizira kuchepetsa kuchepa.
Zofunika: Kutsika kungayambitse kusweka kwa zinthu zopangidwa ndi simenti. HPMC imathandizira kukwaniritsa voliyumu yokhazikika pakuchiritsa, kuchepetsa chiopsezo cha zovuta zokhudzana ndi kuchepa.
8. Zomatira matailosi opangidwa ndi simenti:
Ntchito: HPMC imagwiritsidwa ntchito kwambiri pazomatira matailosi a ceramic.
Chifukwa chiyani kuli kofunikira: M'mapangidwe omatira matailosi, HPMC imapereka kumamatira koyenera, kugwirira ntchito komanso nthawi yotseguka yofunikira pakuyika koyenera. Zimatsimikizira mgwirizano wamphamvu pakati pa tile ndi gawo lapansi.
9. Kudzikongoletsa pansi:
Ntchito: HPMC imagwiritsidwa ntchito podzipangira nokha.
Chifukwa chake kuli kofunikira: Podzipangira nokha, HPMC imathandizira kukwaniritsa zomwe mukufuna komanso imalepheretsa kulekana ndi kukhazikika. Imathandiza kupanga yosalala komanso yosalala pamwamba.
10. Tondo ndi Pulasita:
Cholinga: HPMC nthawi zambiri imawonjezeredwa kumatope ndi mapulasitala.
Zofunika: HPMC imathandizira kugwirira ntchito, kumamatira komanso magwiridwe antchito onse amatope ndi pulasitala popaka pulasitala ndi kumaliza ntchito.
Kugwiritsa ntchito hydroxypropyl methylcellulose muzinthu zopangira simenti ndizochulukirapo. Imathetsa mavuto osiyanasiyana okhudzana ndi kupanga, kugwiritsa ntchito ndi kugwiritsira ntchito zipangizozi, zomwe zimapangitsa kuti zikhale zosinthika komanso zodalirika pamapangidwe osiyanasiyana omanga.
Nthawi yotumiza: Dec-18-2023