Tasirin Hydroxypropyl Methyl Cellulose HPMC akan Saitin Lokacin Kankara

Lokacin saita siminti yana da alaƙa da lokacin saita siminti, kuma tasirin tarawa ba shi da kyau. Saboda haka, sakamakon hydroxypropyl methylcellulose HPMC a kan saitin lokaci na karkashin ruwa ba dispersible kankare cakuda za a iya karatu ta wurin saitin lokaci na turmi. Tun lokacin da aka saita lokacin turmi ruwa ya shafa, don kimanta tasirin HPMC akan lokacin saita turmi, ana buƙatar daidaita ma'aunin ruwa-ciminti da rabon turmi na turmi.

Sakamakon gwaji ya nuna cewa ƙari na hydroxypropyl methylcellulose HPMC yana da tasiri mai mahimmanci a kan cakuda turmi, kuma lokacin saitin turmi yana tsawaita tare da karuwar adadin hydroxypropyl methylcellulose. Dangane da abin da ke cikin HPMC iri ɗaya, turmi da aka kafa a ƙarƙashin ruwa ya fi turmi da aka yi a cikin iska. Matsakaici gyare-gyare yana ɗaukar tsayi don saitawa. Lokacin da aka auna a cikin ruwa, idan aka kwatanta da samfurin mara kyau, lokacin saitin farko na turmi da aka haɗe da hydroxypropyl methylcellulose ya jinkirta da sa'o'i 6-18, kuma lokacin saitin ƙarshe ya jinkirta da 6-22 hours. Saboda haka, ya kamata a yi amfani da HPMC tare da haɗin gwiwa tare da magunguna na farko.

HPMC babban polymer kwayoyin halitta ne tare da tsarin layi na macromolecular. Ƙungiya mai aiki tana da ƙungiyoyin hydroxyl, waɗanda za su iya samar da haɗin gwiwar hydrogen tare da gaurayewar kwayoyin ruwa da kuma ƙara dankon ruwa mai gauraya. Dogayen sarƙoƙi na ƙwayoyin cuta na HPMC za su jawo hankalin junansu, suna sa ƙwayoyin HPMC su haɗa juna don samar da tsarin hanyar sadarwa, nannade siminti da hada ruwa. Tunda HPMC ta samar da tsarin cibiyar sadarwa mai kama da fim don kunsa siminti, yana iya hana haɓakar ruwa a cikin turmi yadda ya kamata, kuma ya hana ko rage yawan hydration na siminti.