Udindo wa hydroxypropyl methyl cellulose mu mortar yonyowa

Udindo waHPMCmu matope onyowa

Mtondo wosakaniza wonyowa: Mtondo wosakaniza ndi mtundu wa simenti, wosakaniza bwino, wosakaniza ndi madzi, ndipo malinga ndi makhalidwe a zigawo zosiyanasiyana, mu gawo linalake, pambuyo poyezedwa pamalo osakaniza, umasakanizidwa, umasamutsidwa kupita kumalo omwe galimoto imagwiritsa ntchito, kupita ku chidebe chosungiramo zinthu zapadera, ndipo umagwiritsidwa ntchito munthawi yodziwika bwino kusakaniza konyowa komalizidwa.

Hydroxypropyl methyl cellulose imagwiritsidwa ntchito ngati chosungira madzi pa simenti, kupompa matope oletsa kupopera. Mu gypsum ngati chomangira kuti chiwongolere kugwiritsa ntchito ndikuwonjezera nthawi yogwirira ntchito, hydroxypropyl methylcellulose HPMC imasunga madzi kuti matope akauma asachepe kwambiri, zomwe zimapangitsa kuti mphamvu ikhale yolimba. Kusunga madzi ndi chinthu chofunikira kwambiri cha hydroxypropyl methyl cellulose HPMC, komanso ndi nkhawa ya opanga matope ambiri onyowa. Zinthu zomwe zimakhudza momwe matope onyowa amasungira madzi ndi monga kuchuluka kwa HPMC komwe kumawonjezeredwa, kukhuthala kwa HPMC, kusalala kwa tinthu tating'onoting'ono komanso kutentha kwa malo ogwiritsira ntchito.
Hydroxypropyl methyl cellulose HPMC mu matope onyowa amagwira ntchito yaikulu m'mbali zitatu, imodzi ndi mphamvu yabwino kwambiri yosungira madzi, yachiwiri ndi kusinthasintha kwa matope onyowa ndi thixotropy ya mphamvu, yachitatu ndi kuyanjana ndi simenti. Kusunga madzi a ether kumadalira kuchuluka kwa kuyamwa kwa madzi m'munsi, kapangidwe ka matope onyowa, makulidwe a matope, kufunika kwa madzi a matope, ndi nthawi yoyika. Kuwonekera bwino kwa hydroxypropyl methyl cellulose, kumakhala bwino kusunga madzi.
Zinthu zomwe zimakhudza kusunga madzi mu matope onyowa ndi monga kukhuthala kwa etha ya cellulose, kuwonjezera kuchuluka, kukula kwa tinthu tating'onoting'ono ndi kutentha. Kukhuthala kwa etha ya cellulose, kumachititsanso kuti madzi azisungidwa bwino. Kukhuthala ndi chinthu chofunikira kwambiri pakugwira ntchito kwa HPMC. Pa chinthu chomwecho, kugwiritsa ntchito njira zosiyanasiyana poyesa kukhuthala kwa zotsatira kumasiyana kwambiri, zina ngakhale ndi ziwiri. Chifukwa chake, kuyerekeza kukhuthala kuyenera kuchitika mwanjira yofanana yoyesera, kuphatikiza kutentha, rotor, ndi zina zotero.

Kawirikawiri, kukhuthala kwa madzi kumakhala kwakukulu, ndipo kusungunuka kwa madzi kumakhala bwino. Komabe, kukhuthala kwa madzi kumakhala kwakukulu, kulemera kwa mamolekyu a HPMC kumakhala kwakukulu, ndipo kusungunuka kwa HPMC kumachepa, zomwe zimakhudza mphamvu ndi kapangidwe ka matope. Kukhuthala kwa madzi kumakhala kwakukulu, ndipo kukhuthala kwa matope kumakhala koonekeratu, koma sikukhudzana mwachindunji. Kukhuthala kwa madzi kumakhala kwakukulu, ndipo matope onyowa amakhala omata kwambiri, ntchito yabwino yomanga, ntchito yokanda yokhuthala komanso kumamatira kwambiri ku substrate. Komabe, kusintha kwa mphamvu yomanga ya matope onyowa sikunathandize. Kapangidwe konse, magwiridwe antchito si odziwika bwino otsutsana ndi kugwedezeka. Mosiyana ndi zimenezi, kukhuthala kwapakati ndi kotsika koma kosinthidwa hydroxypropyl methylcellulose kuli ndi magwiridwe antchito abwino kwambiri pakukweza mphamvu yomanga ya matope onyowa.
Kuchuluka kwa matope onyowa a PMC cellulose ether akawonjezeredwa, kumakhala bwino kusunga madzi, kukhuthala kwa madzi kumakwera, komanso kumakhala bwino kusunga madzi. Kusalala ndi chizindikiro chofunikira cha ntchito ya hydroxypropyl methyl cellulose.
Kusalala kwa hydroxypropyl methyl cellulose kumakhudzanso kusunga madzi. Nthawi zonse, kukhuthala komweko ndi kusalala kosiyana kwa hydroxypropyl methyl cellulose, pansi pa kuchuluka komweko kwa kuwonjezera, kuchepa kwa kusalala kwa mphamvu yosungira madzi kumakhala bwino.
Mu matope onyowa, kuwonjezera kwa ether ya celluloseHPMCndi yotsika kwambiri, koma imatha kusintha kwambiri momwe matope onyowa amagwirira ntchito, ndiye chowonjezera chachikulu chomwe chimakhudza kwambiri momwe matope amagwirira ntchito. Kugwira ntchito kwa matope onyowa kumakhudzidwa kwambiri ndi kusankha koyenera kwa hydroxypropyl methyl cellulose.