1. Mtondo wosakaniza wonyowa: Mtondo wosakaniza ndi mtundu wa simenti, wosakaniza bwino, wosakaniza ndi madzi, ndipo malinga ndi makhalidwe a zigawo zosiyanasiyana, malinga ndi chiŵerengero china, pambuyo poyezedwa pamalo osakaniza, wosakaniza, wonyamulidwa kupita kumalo komwe galimotoyo ikugwiritsidwa ntchito, ndikulowetsedwa mu malo apadera. Sungani chidebecho ndikugwiritsa ntchito chisakanizo chonyowa chomalizidwa kwa nthawi yomwe yatchulidwa.
2. Hydroxypropyl methyl cellulose imagwiritsidwa ntchito ngati chosungira madzi cha simenti ndi retarder popopera matope. Pankhani ya gypsum ngati chomangira kuti chigwiritsidwe ntchito bwino ndikuwonjezera nthawi yogwira ntchito, kusunga madzi kwa HPMC kumalepheretsa matope kusweka mwachangu kwambiri akauma, ndipo kumawonjezera mphamvu pambuyo pouma. Kusunga madzi ndi chinthu chofunikira kwambiri cha hydroxypropyl methyl cellulose HPMC, ndipo ndi nkhawa ya opanga matope ambiri osakaniza madzi m'nyumba. Zinthu zomwe zimakhudza momwe matope osakanikirana ndi madzi amasungidwira ndi monga kuchuluka kwa HPMC komwe kumawonjezeredwa, kukhuthala kwa HPMC, kusalala kwa tinthu tating'onoting'ono ndi kutentha kwa malo ogwiritsidwa ntchito.
3. Ntchito zazikulu za hydroxypropyl methyl celluloseHPMCMu matope osakanikirana ndi madzi, mbali zitatu zazikulu ndi izi: imodzi ndi mphamvu yabwino yosungira madzi, ina ndi momwe matope osakanikirana ndi madzi amagwirira ntchito, ndipo yachitatu ndi momwe amagwirira ntchito ndi simenti. Kusunga madzi kwa cellulose ether kumadalira kuchuluka kwa madzi omwe amayamwa pansi, kapangidwe ka matope, makulidwe a matope, kufunika kwa madzi kwa matope, ndi nthawi yoyika. Pamene hydroxypropyl methyl cellulose ikuwonekera bwino, kusunga madzi kumakhala bwino.
4. Zinthu zomwe zimakhudza kusunga madzi mu matope osakaniza ndi madzi ndi monga kukhuthala kwa etha ya cellulose, kuchuluka kwa kuwonjezera, kukula kwa tinthu tating'onoting'ono ndi kutentha. Kukhuthala kwa etha ya cellulose kumakhala kwakukulu, kusunga madzi kumakhala bwino. Kukhuthala ndi gawo lofunikira pakugwira ntchito kwa HPMC. Pa chinthu chomwecho, zotsatira za kugwiritsa ntchito njira zosiyanasiyana poyesa kukhuthala zimasiyana kwambiri, ndipo zina zimakhala ndi mipata iwiri. Chifukwa chake, kufananiza kukhuthala kuyenera kuchitika mwanjira yoyesera yomweyo, kuphatikiza kutentha, spindle, ndi zina zotero.
5. Kawirikawiri, kukhuthala kwakukulu, kumakhala bwino kusunga madzi. Komabe, kukhuthala kwakukulu, kulemera kwa mamolekyulu a HPMC kumakhala kwakukulu komanso kusungunuka kwa HPMC kumachepa, zomwe zimakhudza mphamvu ndi magwiridwe antchito a matope. Kukhuthala kwakukulu, kukhuthala kwa matope kumaonekera bwino, koma sikukhudzana mwachindunji. Kukhuthala kwakukulu, kukhuthala kwa matope kumakhala kolimba, ndipo kapangidwe kake kamakhala bwino, kukhuthala kwa matope kumakhala kolimba komanso kumamatira kwambiri ku substrate. Komabe, mphamvu yowonjezera ya matope onyowa yokha siithandiza. Mapangidwe awiriwa alibe mphamvu yodziwika bwino yotsutsana ndi kutsika. Mosiyana ndi zimenezi, kukhuthala kwina kwapakati ndi kotsika koma kosinthidwa hydroxypropyl methyl cellulose kuli ndi magwiridwe antchito abwino kwambiri pakukweza mphamvu ya matope onyowa.
6. Kuchuluka kwa ether ya cellulose ikawonjezeredwa ku HPMC wet mortar, kumakhala bwino kusunga madzi, ndipo kukhuthala kwake kumakhala kwakukulu, kumakhala bwino kusunga madzi. Kusalala kwake ndi chizindikiro chofunikira cha magwiridwe antchito a hydroxypropyl methyl cellulose.
7. Kusalala kwa hydroxypropyl methyl cellulose kumakhudzanso kusunga madzi. Kawirikawiri, pa hydroxypropyl methyl cellulose yokhala ndi kukhuthala kofanana ndi kusalala kosiyana, kuchepa kwake kukakhala kochepa, kuchepa kwake kumakhala kochepa posunga madzi pansi pa kuchuluka komweko kowonjezera. Ndikobwino.
8. Mu matope osakanikirana ndi madzi, kuchuluka kwa HPMC ya cellulose ether kumakhala kochepa kwambiri, koma kumatha kusintha kwambiri magwiridwe antchito a matope onyowa, ndipo ndicho chowonjezera chachikulu chomwe chimakhudza kwambiri magwiridwe antchito a matope. Kusankha koyenera kwa hydroxypropyl methyl cellulose, magwiridwe antchito a matope onyowa amakhudzidwa kwambiri.
Nthawi yotumizira: Epulo-28-2024