Hpmc (hydroxypropyl methylcellulose)ndi zinthu za m'mapata polymer zomwe zimagwiritsidwa ntchito pomanga malonda. Amagwiritsidwa ntchito kwambiri m'matope a simenti, matope osakanikirana-osakaniza ndi zinthu zina kuti alalikire, kusunga madzi, kusintha kumakhala kolunjika ndi ntchito yopanga. Udindo wake ku matope ndilofunika kwambiri, makamaka pokonza zolimba za matope.
1. Kusunga kwamadzi kowonjezera
HPMC ili ndi chisungiko chabwino chamadzi, chomwe chimatanthawuza kuti madzi sadzayamba msanga mkati mwa matope, motero kupewa ming'alu yobweredwa ndi madzi ambiri. Makamaka m'malo owuma komanso otentha kwambiri, madzi osungira HPMC ndi abwino kwambiri. Chinyezi mu matope chimatha kukhala chokhazikika kwakanthawi kwakanthawi kopewa kuyanika kamodzi kokha, komwe ndikofunikira kwambiri kukonza kukana kwa matope. Kusungidwa kwamadzi kumatha kuchedwetsa matenda a simenti, kulola tinthu tating'onoting'ono kuti tichite ndi madzi kwakanthawi, motero zimakulitsa kukana kwa matope.
2. Sinthani chotsatsa cha matope
Monga thickener, hpmc imatha kupanga mawonekedwe abwino a matope a matope kuti apititse patsogolo chotsatsa ndi madzimadzi. Izi sizingosintha mphamvu yomwe ili pakati pa matope ndi maziko a mawonekedwe ndikuchepetsa kuvuta kwa matope, komanso kumachepetsa kuvuta kwa matope ndikuchepetsa kupezeka kwaming'alu zakunja pa ntchito yomanga. Kutsatsa kwabwino kumapangitsa matope ambiri panthawi yomanga ndikuchepetsa ming'alu yoyambitsidwa ndi makulidwe osagwirizana ndi mafupa.
3. Sinthani pulasitiki ndi kugwirira ntchito matope
HPMC imathandizira pulasitiki ndi mwayi wa matope, omwe amatha kusintha bwino ntchito yomanga. Chifukwa cha kukula kwake, hpmc imatha kupanga matope kukhala ndi chizolowedwe chabwino, moyenera kuchepetsa kupezeka kwa matope omwe amayambitsidwa ndi matope osagwirizana ndi madzi osavala bwino panthawi yomanga. Kupumira bwino kumapangitsa matope opsinjika nthawi youma ndi shrinkage, kuchepetsa kuthekera kwa ming'alu chifukwa chosagwirizana.
4. Chepetsani ming'alu ya shrin
Kuuma kouma ndi kuchuluka kwa shrinka woyambitsidwa ndi madzi osinthika nthawi youma matope. Kuuma kopuwala kwambiri kumayambitsa ming'alu pamtunda kapena mkati mwa matope. HPMC imachepetsa madzi ofulumira ndikuchepetsa kupezeka kwa shiza shriza pogwiritsa ntchito madzi osungirako madzi ambiri. Kafukufuku akuwonetsa kuti matope awonjezedwa ndi HPMC ali ndi mtengo wouma wowuma ndi voliyumu yake yochepa kwambiri panthawi yowuma, moyenera kupewa ming'alu yoyambitsidwa ndi kuyanika. Kwa makoma kapena pansi, makamaka nyengo yotentha kapena yowuma komanso yowuma, udindo wa HPMC ndikofunika kwambiri.
5. Sinthani chosokoneza cha matope
Makina a HPMC amatha kupanga mgwirizano wina ndi simenti ndi zinthu zina zopangira matope, kupanga matope kukhala ndi kukana kwambiri pambuyo polimbana. Mphamvu yowonjezera iyi imangochokera kuphatikizidwe ndi hpmc pa simenti hydraction njira, komanso imasintha mphamvu ya matope pamlingo wina. Kulimba kwa matontho atalima, komwe kumathandizira kupirira kupsinjika kwakukulu ndipo sikunatenge ming'alu. Makamaka m'malo okhala ndi kutentha kwakukulu kapena kusintha kwakukulu kwa katundu wakunja, hpmc kumatha kukonza bwino kukana kwa matope.
6. Onjezerani ungwiro wa matope
Monga momwe orlymer polymer zinthu, hpmc imatha kupanga ma netiweki microscopic mu matope kuti zithandizire matopewo. Khalidwe ili limapangitsa matope kukhala opanda ungwiro ndipo amachepetsa kukhazikika kwa chinyezi ndi manyuzipepala ena akunja. M'chilengedwe chonyowa kapena chonyowa m'madzi, mkati mwa matope ndi mwayi wokhazikika ndi chinyezi, zomwe zimayambitsa kukuwonjezeranso ming'alu. Kuphatikiza kwa HPMC kumatha kuchepetsa kulowera kwa madzi ndikulepheretsa kukula kwa ming'alu yoyambitsidwa ndi kulowerera kwamadzi, potero kumathandizira kukana kwa matope pamlingo wina.
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Pa nthawi yowuma ndi kuumitsa matope, nthawi zambiri miyala ya micro nthawi zambiri imachitika mkati, ndipo ming'alu ya micro imatha kukulitsa pang'onopang'ono ndikupanga ming'alu yowoneka motsogozedwa ndi mphamvu zakunja. HPMC imatha kupanga mawonekedwe a vanifolomu mkati mwa matope kudzera muzomera zake, kuchepetsa kuthekera kwa ming'alu ya micro. Ngakhale ming'alu yaying'ono imachitika, hpmc imatha kusewera ndi gawo lina la odana ndi kuwalepheretsa kukula. Izi ndichifukwa choti maunyolo a polymer a HPMC amatha kufalitsa nkhawa ndi mbali zonse ziwiri za mtundu kudzera munkhani kudzera mu matope mu matope, potengera kukula kwa mpweya.
8. Sinthani blastic modulus ya matope
Elastic modulus ndi chizindikiro chofunikira kwambiri chopewa kusokoneza. Kwa matope, modulu ya elastic imatha kupangitsa kuti ikhale yokhazikika ikagonjetsedwa ndi mphamvu zakunja ndipo sizingayambitse kuwonongeka kwamphamvu kapena ming'alu. Monga pulasitiki, hpmc imatha kuwonjezera modulu ya elastic modulu mu matope, kuloleza matope kuti azikhala bwino malinga ndi mawonekedwe a mphamvu zakunja, motero zimachepetsa kupezeka kwa ming'alu.
HpmcMothandizidwa bwino ndi matope muzinthu zambiri pokonza madzi, kutsatira matope a matope, ndikusintha mphamvu yolimba, yopanda tanthauzo modulus. magwiridwe antchito. Chifukwa chake, kugwiritsa ntchito kwa HPMC pakupanga zomanga sikungangosintha chitoliro cha matope, komanso kusintha mapangidwe ake ndikuwonjezera moyo wa matope.
Post Nthawi: Disembala 16-2024