Hydroxypylropyl (HPMC) ndi yothandiza kwambiri polymer yolimba kwambiri pomanga zida zomangira, makamaka posinthira zinthu za mmenga. Zinthu zozikidwa ndime monga matope, otentheka ndi monkriti amagwiritsidwa ntchito pomanga malonda. Kutsatsa kwake ndi chinthu chofunikira chokhudza ntchito yomanga komanso kugwira ntchito kwa nthawi yayitali. Zinthu zomwe zimakhazikitsidwa ndi simenti nthawi zambiri zimakonda kutsatira, makamaka ngati maziko ndi osalala kapena owopsa. Chifukwa chake, kukonza zotsatsa zake zakhala nkhani yofunika yaukadaulo. HPMC yawonetsa zotsatira zabwino pakulimbika mtima kutsatsa zinthu za simenti chifukwa cha kapangidwe kake ka mankhwala ndi katundu.
1. Mankhwala ndi makina a zochita za HPMC
HPMC ndi njira yosungunuka yamadzi yopanda madzi opangidwa ndi kusintha kwa mankhwala kwa cellulose yachilengedwe. Kapangidwe kake kosiyanasiyana kumapereka kusungidwa kwabwino kwamadzi, kumakula ndi mawonekedwe opanga mafilimu. Izi zimagwira ntchito yofunika kwambiri pakuwongolera magwiridwe antchito a simenti.
Sinthani kusungidwa kwamadzi
Chimodzi mwazinthu zazikulu za HPMC ndikuwongolera chitetezo chamadzi chazogulitsa za simenti. Panthawi yomanga zida za mmenga, makamaka m'malo owuma kapena otentha, kutentha kwambiri kumadzetsa kusakwanira kwa simenti yokwanira ya simenti, motero kumakhudza zotsatsa ndi mphamvu zake. HPMC ili ndi mayamwa abwino kwambiri amadzi ndi kuthekera kwa madzi, ndipo imatha kupanga filimu yolumikizira ya hydration padziko lapansi kuti asachedwe kutentha ndikuwonetsetsa kuti simenti ikhale hydration yazinthuzo.
Sinthani Kuthana ndi Kuchita Zinthu
HPMC imatha kuwonjezera kusasinthika ndi ufa wa zinthu zopangidwa ndi simenti, potero kumawonjezera kugwiritsidwa ntchito kwa nkhaniyo. Pamapulogalamu othandiza, kugwira ntchito bwino kumatanthauza kuti zinthuzo zitha kufalitsa ngakhale pang'ono pantchito yomanga ndi kutsatira popanda madzimadzi kwambiri kapena zouma kwambiri, zomwe zimachepetsa chotsatira. Pokulitsa mafatiwo, hpmc amapereka zinthu zina, kupatsa zomangamanga ndikupewa zomangamanga za slurry, motero kumawongolera zomata za simenti pamtunda wosalala kapena wosakhazikika.
Kuwonjezera maola otseguka
Nthawi yotseguka yazinthu za simenti, mwachitsanzo, kuchokera ku kumaliza kusakaniza mpaka nthawi yomwe kutsatira kumatayika, ndi njira yomanga yolimbitsa thupi. Zinthu zachikhalidwe za mmapi zamitsempha zimasintha kwambiri ndipo zimakhala ndi nthawi yotseguka, yomwe imatha kuyambitsa mavuto mosavuta panthawi yomanga. Pochedwetsa madzi osinthika, hpmc kwambiri amafikira nthawi yotseguka yazogulitsa za simenti, kupatsa antchito nthawi yambiri kuti asinthe ndi kusintha kuonetsetsa kuti akutsatirani zinthu za gawo la gawo lapansi.
Kukulitsa kukana
Pomanga manda ena kapena malo ophatikizika, kukana kwa osanja ndi chizindikiro chofunikira kwambiri chazinthu za simenti. HPMC imatha kusintha zinthu zosanja za simenti ndikuletsa zida kuti zisame kapena kugwa pomanga. Izi zimatheka kudzera mu kukula kwake komanso kosangalatsa kwambiri kwa HPMC, yomwe imatha kupewa bwino kuti izi zitheke pavesi, potero kukonza zinthu zakuthupi ndi zomatira.
2. Zotsatira za HPMC pa microstructuctuctuctuctuctuctuctuctuctuctuctuctuctuctunce of simenti-potengera
HPMC siimasintha zotsatsa za zinthu za simenti molingana ndi ma mucroscopic, komanso zimagwiranso gawo lofunikira mu microstructuction za mfundozo.
Pangani mawonekedwe azomwe amaphatikizira
HPMC imalimbikitsa hydration ya zigawo monga ma tcalcium sikoloti (c3s) ndi dicamu sini ndi silm romer (c2s) mu Smemer Caltium sharium (Chuma) nels. Gel iyi ndi gawo lalikulu posankha mphamvu ndi zotsatsa za simenti. HPMC imatha kuthandiza kupanga zowonda komanso zopitilira patsogolo pa intaneti, ndikusintha kwambiri coutheon ndi kutsatira zomwe zidalipo.
Kuchepetsa kupezeka kwa ming'alu
Pakachiritso, zinthu zochokera kumenti nthawi zambiri zimayamba kupanga ma microcracks chifukwa cha kutayika kwa madzi ndi shrinkage. Kusunga kwamadzi kwa HPMC kumathandizira kuchepetsa kuchepa kwa madzi, potero kuchepetsa ming'alu yamaliro yomwe imayambitsidwa chifukwa cha zinthu zazing'ono zochokera m'magawo oyambira kuchiritsa. Kuphatikiza apo, kanema wopangidwa ndi HPMC ali ndi kuchuluka kwina ndipo amatha kuyamwa kupsinjika ndikupewa kukula kwina. Kuchepetsa muming'alu kumathandizira kukonza mphamvu ndi kulimba kwa nkhaniyi.
3. Zitsanzo za ntchito za HPMC muzogulitsa zosiyanasiyana
Tile zomatira
M'masewera a tile, zotsatsa ndi imodzi mwazovuta kwambiri. Kudzera mu kukula kwake ndi madzi osasunga, hpmc kumathandizira kuti matayala azitsatira kukhoma ndi matailosi pomanga, kupewa matailosi kuti asamasule ndikugwa. Nthawi yomweyo, imatha kusinthanso kukana kusanja kuti zitsimikizire kuti matailosi sawathamangitsa.
Khoma lakunja
Kugwiritsa ntchito HPMC mu khoma lakunja kwa putty ufa kumatha kusintha mosamala madzi ndi kutsatira kwamphamvu kwa khoma lakunja, kulola kuti kuwonongeka kwa khomalo, kuloleza kuthyoka chifukwa chopukutira kapena kuyanika chifukwa choyanika kwambiri. Kuphatikiza apo, HPMC imathanso kusintha kugwiritsidwa ntchito kwa otchinga, ndikupangitsa kuti isagwiritse ntchito motsatsa komanso kulimbikitsa zomatira ku malo osanjikiza.
HPMC imasintha kwambiri zotsatsa za mankhwala opangidwa ndi mmenga kudzera pamalo ake apadera monga kusungidwa kwamadzi, kusungunuka, kupanga mafilimu ndikuwonjezera nthawi yotseguka. HPMC imatenga mbali yofunika kwambiri pokonza zinthu zogwiritsira ntchito simenti ndikulimbikitsa kutumikira mphamvu zawo microstction. Pamene makampani omanga akupitilizabe kukonza zofuna zake kukhala zabwino komanso kulimba, hpmc zimagwiritsidwa ntchito kwambiri m'magawo a simenti, ndikugwiritsa ntchito njira zothetsera mavuto ambiri, ndikupereka njira zothetsera mavuto azotsatira zamitundu ya simenti.
Post Nthawi: Feb-17-2025