HPMC (hydroxypropyl methylcellulose)ndi polima pawiri ntchito kwambiri mu zinthu simenti. Ili ndi kukhuthala bwino kwambiri, kufalikira, kusunga madzi komanso zomatira, kotero imatha kupititsa patsogolo magwiridwe antchito a simenti. Popanga ndi kugwiritsa ntchito zinthu za simenti, nthawi zambiri amakumana ndi mavuto monga kuwongolera madzi, kukulitsa kukana kwa ming'alu, komanso kulimbitsa mphamvu. Kuwonjezera kwa HPMC kumatha kuthetsa mavutowa.
1. Kupititsa patsogolo kusungunuka ndi kugwirira ntchito kwa simenti slurry
Popanga zinthu za simenti, fluidity ndi chinthu chofunikira chomwe chimakhudza ntchito yomanga komanso mtundu wazinthu. Monga polima thickener, HPMC akhoza kupanga khola colloidal maukonde dongosolo mu slurry simenti, potero bwino kuwongolera fluidity ndi operability wa slurry. Zingathe kuchepetsa kukhuthala kwa makulidwe a simenti slurry, kupanga slurry kwambiri pulasitiki ndi yabwino yomanga ndi kuthira. Kuphatikiza apo, HPMC imatha kusunga matope a simenti, kuletsa matope a simenti kupatukana panthawi yosakaniza, ndikuwongolera magwiridwe antchito panthawi yomanga.
2. Limbikitsani kusunga madzi kwa zinthu za simenti
Njira ya hydration ya simenti ndiyo chinsinsi cha kupanga mphamvu ya zinthu za simenti. Komabe, ngati madzi mu simenti slurry amasanduka nthunzi kapena kutayika mofulumira kwambiri, hydration anachita kukhala chosakwanira, motero zimakhudza mphamvu ndi compactness wa mankhwala simenti. HPMC ili ndi kusungirako madzi amphamvu, omwe amatha kuyamwa madzi bwino, kuchedwetsa kutuluka kwa madzi, ndikusunga chinyezi cha simentiyo pamlingo wokhazikika, motero kumathandizira kuti simentiyo ikhale ndi madzi okwanira, potero kumapangitsa mphamvu ndi mphamvu ya simenti. zinthu za simenti. Kuchulukana.
3. Limbikitsani kukana ming'alu ndi kulimba kwa zinthu za simenti
Zopangira simenti zimakhala ndi ming'alu panthawi yowumitsa, makamaka ming'alu ya shrinkage chifukwa cha kutaya msanga kwa chinyezi panthawi yowumitsa. Kuphatikizika kwa HPMC kumatha kupititsa patsogolo kukana kwa zinthu za simenti powonjezera kukhuthala kwa slurry. Maselo a HPMC amatha kupanga maukonde mu simenti, omwe amathandizira kumwaza kupsinjika kwamkati ndikuchepetsa kupsinjika kwa shrinkage panthawi yowumitsa simenti, potero kuchepetsa kuchitika kwa ming'alu. Kuphatikiza apo, HPMC imathanso kukonza kulimba kwa zinthu za simenti, kuzipangitsa kuti zisakhale zong'ambika pansi pamikhalidwe yowuma kapena yotsika.
4. Kupititsa patsogolo kukana kwa madzi ndi kulimba kwa zinthu za simenti
Kukhalitsa komanso kukana madzi kwa zinthu za simenti kumakhudzana mwachindunji ndi momwe amagwirira ntchito m'malo ovuta. HPMC akhoza kupanga khola filimu mu slurry simenti kuchepetsa malowedwe a chinyezi ndi zinthu zina zoipa. Ikhozanso kupititsa patsogolo kukana kwamadzi kwa zinthu za simenti mwa kukonza kachulukidwe ka simenti ndikuwonjezera kukana kwa zinthu za simenti ku chinyezi. Pogwiritsa ntchito nthawi yayitali, zinthu za simenti zimakhala zokhazikika m'malo otentha kwambiri kapena m'malo apansi pamadzi, sizitha kusungunuka ndi kukokoloka, ndikuwonjezera moyo wawo wautumiki.
5. Sinthani mphamvu ndi kuuma liwiro la zinthu za simenti
Pa hydration anachita ndondomeko ya mankhwala simenti, Kuwonjezera HPMC akhoza kulimbikitsa kubalalitsidwa kwa particles simenti mu slurry simenti ndi kuonjezera kukhudzana m'dera pakati pa simenti particles, potero kuonjezera mlingo hydration ndi mphamvu kukula mlingo wa simenti. Kuphatikiza apo, HPMC imatha kukhathamiritsa kulumikizana bwino kwa simenti ndi madzi, kupititsa patsogolo kukula kwamphamvu koyambirira, kupanga kuuma kwa zinthu za simenti yunifolomu, ndikuwonjezera mphamvu yomaliza. Muzinthu zina zapadera, HPMC imathanso kusintha masinthidwe a simenti kuti agwirizane ndi zofunikira zomanga m'malo osiyanasiyana.
6. Kupititsa patsogolo maonekedwe ndi khalidwe lapamwamba la zinthu za simenti
Mawonekedwe a zinthu za simenti ndizofunikira kwambiri pakugwiritsa ntchito komaliza, makamaka pakumanga kwapamwamba komanso zokongoletsa, komwe kusalala ndi kusalala kwa mawonekedwe ndi chimodzi mwazinthu zofunika kwambiri zoyezera khalidwe. Ndi kusintha mamasukidwe akayendedwe ndi rheological katundu wa simenti slurry, HPMC akhoza bwino kuchepetsa mavuto monga thovu, zilema, ndi kugawa m'njira zosiyanasiyana, potero kupanga pamwamba zinthu simenti yosalala ndi yosalala, ndi kuwongolera maonekedwe. Muzinthu zina zodzikongoletsera za simenti, kugwiritsa ntchito HPMC kumathanso kupangitsa kuti mtundu wawo ukhale wofanana komanso wosasunthika, ndikupangitsa kuti zinthuzo ziwoneke bwino.
7. Sinthani kukana kwa chisanu kwa zinthu za simenti
Zinthu za simenti zomwe zimagwiritsidwa ntchito m'malo otentha kwambiri zimayenera kukhala ndi gawo lina la kukana chisanu kuti ziteteze ming'alu ndi kuwonongeka komwe kumachitika chifukwa cha kuzizira kozizira. HPMC ikhoza kupititsa patsogolo kukana kwachisanu kwa zinthu za simenti mwa kupititsa patsogolo kukhazikika kwa matope a simenti. Pothandizira kuphatikizika kwa zinthu za simenti komanso kuchepetsa chinyezi cha ma pores a simenti, HPMC imathandizira kuti zinthu za simenti zisamafe chisanu m'malo otentha komanso kupewa kuwonongeka kwa kapangidwe ka simenti chifukwa cha kuzizira kwa madzi.
Kugwiritsa ntchito kwaMtengo wa HPMCmuzinthu za simenti zimakhala ndi ubwino wambiri ndipo zimatha kusintha kwambiri ntchito za simenti pogwiritsa ntchito njira zosiyanasiyana. Iwo sangakhoze kokha kusintha fluidity, kasungidwe madzi, kukana ming'alu ndi mphamvu mankhwala simenti, komanso kusintha pamwamba khalidwe, durability ndi chisanu kukana mankhwala simenti. Pamene makampani omangamanga akupitirizabe kukonza zofunikira za ntchito za simenti, HPMC idzagwiritsidwa ntchito mowonjezereka kuti ipereke chithandizo chokhazikika komanso chogwira ntchito pakupanga ndi kugwiritsa ntchito zinthu za simenti.
Nthawi yotumiza: Dec-06-2024