MHEC (Methyl Hydroxyethyl Cellulose) wani polymer ne da aka yi da cellulose wanda aka saba amfani da shi azaman ƙari a aikace-aikacen zane-zanen siminti. Yana da fa'idodi iri ɗaya da HPMC, amma yana da wasu bambance-bambance a cikin kaddarorin. Ga yadda ake amfani da MHEC a cikin fale-falen siminti:
Rike ruwa: MHEC yana ƙara riƙe ruwa a cikin cakuda mai rufi, don haka yana tsawaita lokacin aiki. Yana taimakawa hana haɗin ya bushe da wuri, yana ba da isasshen lokaci don amfani da shi da kuma kammala shi.
Tsarin Aiki: MHEC yana inganta iya aiki da kuma yaduwar kayan shafa. Yana inganta haɗin kai da kuma kwararar ruwa, yana sauƙaƙa shafawa da kuma cimma kyakkyawan ƙarewa a saman.
Mannewa: MHEC yana inganta mannewa mai kyau na simintin a kan abin da aka yi amfani da shi. Yana taimakawa wajen tabbatar da haɗin gwiwa mai ƙarfi tsakanin simintin da saman da ke ƙasa, yana rage haɗarin wargajewa ko rabuwa.
Juriyar Tsagewa: MHEC tana ba da thixotropy ga cakudar filastar, tana inganta juriyarsa ga tsagewa ko faɗuwa idan aka shafa ta a tsaye ko a sama. Yana taimakawa wajen kiyaye kauri da siffar da ake so na filastar yayin amfani da ita.
Juriyar Tsagewa: Ta hanyar ƙara MHEC, kayan da aka yi amfani da su wajen yin siminti suna samun sassauci sosai kuma hakan yana ƙara juriyar tsagewa. Yana taimakawa wajen rage faruwar tsagewa sakamakon raguwar bushewa ko faɗaɗa/matsewar zafi.
Dorewa: MHEC yana taimakawa wajen dorewar tsarin simintin. Yana samar da fim mai kariya idan ya bushe, yana ƙara juriya ga shigar ruwa, yanayi da sauran abubuwan muhalli.
Kula da Rheology: MHEC tana aiki a matsayin mai gyara rheology, tana shafar kwararar da kuma iya aiki na cakuda mai juyawa. Yana taimakawa wajen sarrafa danko, inganta halayen famfo ko fesawa, kuma yana hana narkewa ko rabuwa da ƙwayoyin halitta masu tauri.
Ya kamata a lura cewa takamaiman adadin da zaɓin MHEC na iya bambanta dangane da takamaiman buƙatun tsarin siminti, kamar kauri da ake buƙata, yanayin warkarwa da sauran abubuwa. Masana'antun galibi suna ba da jagorori da takaddun bayanai na fasaha tare da shawarar matakan amfani da umarni don haɗa MHEC cikin tsarin gypsum na siminti.
Lokacin Saƙo: Yuni-08-2023