Danko shine muhimmin ma'aunin dukiya na cellulose ether. Gabaɗaya magana, mafi girman danko, mafi kyawun tasirin riƙon ruwa na turmi gypsum. Duk da haka, mafi girman danko shine, mafi girman nauyin kwayoyin halitta na cellulose ether shine, kuma solubility na ether cellulose yana raguwa daidai. Mafi girman danko shine, mafi bayyananniyar tasirin thickening shine, amma ba daidai bane. Mafi girma da danko, da karin m da rigar turmi zai zama, a cikin ginin, yi na danko scraper da high mannewa ga substrate. Amma ba taimako don ƙara ƙarfin tsarin jikakken turmi kanta ba. Bugu da kari, a lokacin gini, aikin rigar turmi anti-sagging ba a bayyane yake ba. Sabanin haka, wasu gyare-gyaren Methyl cellulose tare da ƙananan danko zuwa matsakaici sun nuna ci gaba a cikin ƙarfin tsarin tsarin jika. Kayayyakin bangon gine-gine galibi sassa ne masu rarrafe, suna da shayar da ruwa. Kuma kayan gini na gypsum da ake amfani da su don ginin bango, bayan an ƙara ruwa a jikin bangon, danshin yana da sauƙi don ɗaukar bangon, yana haifar da gypsum rasa danshin da ake bukata don samar da ruwa, yana haifar da matsala wajen gina ginin da kuma rage ƙarfin haɗin gwiwa. , don haka akwai tsagewa, ganguna mara kyau, spalling da sauran matsalolin inganci. Inganta riƙewar ruwa na kayan gini na gypsum zai iya magance matsalar ingancin ginin da inganta ƙarfin haɗin gwiwa tare da bango. Sabili da haka, wakili mai kula da ruwa ya zama ɗaya daga cikin mahimman abubuwan haɓaka kayan gini na gypsum.
Don sauƙaƙe aikin, ana amfani da kayan aikin foda na ginin kamar filasta, filasta mai ƙyalli, plaster ɗin haɗin gwiwa da plaster putty, kuma ana ƙara gypsum retarder a cikin samarwa don tsawaita lokacin ginin plaster ɗin, saboda tsarin hydration na hemihydrate. An hana gypsum ta hanyar ƙara retarder zuwa gypsum, irin wannan nau'in gypsum manna yana buƙatar kasancewa a kan bango na tsawon sa'o'i 1-2 kafin saitawa, kuma yawancin ganuwar suna da kayan shayar da ruwa, musamman, sababbin kayan bango masu nauyi kamar bangon tubali, ganuwar siminti mai ƙyalli, ɓangarori masu ɓarna na thermal insulation, don haka don gudanar da aikin kiyaye ruwa na gypsum slurry, don kauce wa canja wurin wasu slurry na ruwa zuwa bango, yana haifar da gypsum manna ya taurare lokacin da karancin ruwa, hydration bai cika ba. , yana haifar da gypsum da bangon farfajiyar haɗin gwiwa wuri rabuwa, harsashi. Ƙara wakili mai kula da ruwa shine kiyaye danshin da ke cikin gypsum manna, don tabbatar da yanayin hydration na gypsum manna a wurin dubawa, don haka tabbatar da ƙarfin haɗin gwiwa. Ma'aikatan kula da ruwa na kowa sune cellulose ethers, irin su Methyl cellulose (MC) , hypromellose (HPMC, hydroxyethyl methyl cellulose (HEMC) da sauransu. Bugu da kari, polyvinyl barasa, sodium alginate, modified sitaci, diatomite da rare ƙasa foda kuma za a iya amfani da su inganta ruwa rike.
Lokacin aikawa: Yuli-26-2023