Cellulose etherrike ruwa
Riƙewar ruwa na turmi yana nufin iyawar turmi don riƙewa da kulle ruwa. Mafi girman danko na ether cellulose, mafi kyawun riƙewar ruwa. Domin tsarin cellulose ya ƙunshi hydroxyl da ether bond, hydroxyl da ether bond kungiyar oxygen atom da ruwa kwayoyin don hada hydrogen bond, sabõda haka, free ruwa a cikin dauri ruwa, winding ruwa, don taka rawa na ruwa riƙewa.
Solubility na cellulose ether
1. The m cellulose ether ne mai sauki watsawa a cikin ruwa ba tare da agglomerating, amma rushe kudi ne sosai a hankali. Cellulose ether da ke ƙasa 60 raga yana narkar da cikin ruwa na kimanin minti 60.
2. Fine barbashi na cellulose ether a cikin ruwa yana da sauƙi don tarwatsa kuma ba agglomerate ba, kuma adadin rushewa yana da matsakaici. Cellulose ether sama da raga 80 narkar da cikin ruwa na kimanin mintuna 3.
3. Ultrafine cellulose ether yana watsawa da sauri cikin ruwa, ya narke da sauri kuma ya haifar da danko mai sauri. Cellulose ether sama da raga 120 yana narkar da shi a cikin ruwa na kimanin 10-30 seconds.
Mafi kyawun ƙwayoyin ether na cellulose, mafi kyawun riƙewar ruwa, ƙananan barbashi na ether cellulose da ruwa lamba surface nan da nan narkar da kuma kafa gel sabon abu. Manne yana nannade kayan don hana kwayoyin ruwa daga ci gaba da shiga. Wani lokaci, ko da zuga na dogon lokaci, da bayani ba za a iya ko'ina tarwatsa da kuma narkar da, forming wani laka flocculent bayani ko agglomerate. Kyawawan barbashi suna watse kuma suna narke nan da nan bayan haɗuwa da ruwa don samar da ɗanko iri ɗaya.
PH darajar cellulose ether (jinkirta coagulation ko farkon ƙarfin)
Ƙimar PH na masana'antun ether cellulose a gida da waje ana sarrafa su a kusan 7, wanda shine acidic. Domin har yanzu akwai tsarin zoben glucose da ba su da ruwa da yawa a cikin tsarin kwayoyin halitta na ether na cellulose, zoben glucose da aka bushe shi ne babban rukunin da ke haifar da jinkirin siminti. Dehydrated glucose zobe iya yin calcium ions a cikin ciminti hydration bayani form sugar alli kwayoyin mahadi, rage alli ion maida hankali a cikin ciminti hydration lokacin shigar, hana samuwar da hazo na calcium hydroxide da calcium gishiri lu'ulu'u, don haka jinkirta aiwatar da ciminti hydration. Idan darajar PH ta zama yanayin alkaline, turmi zai bayyana yanayin ƙarfin da wuri. Yanzu mafi yawan masana'antu don daidaita ƙimar PH ta amfani da sodium carbonate, sodium carbonate wani nau'i ne na wakili mai haɓakawa, sodium carbonate na iya inganta aikin simintin siminti, yana haifar da haɗin kai tsakanin ƙwayoyin cuta, ƙara haɓaka danko na slurry, turmi da sodium carbonate da calcium ion fili da sauri, ya haifar da samuwar ettingite, ciminti da sauri. Sabili da haka, ya kamata a daidaita ƙimar PH bisa ga abokan ciniki daban-daban a cikin ainihin tsarin samarwa.
Cellulose ether iskar gas
A iska entraining cellulose ether ne yafi saboda cellulose ether ne kuma surfactant, da dubawa aiki na cellulose ether yafi faruwa a cikin gas-ruwa-m dubawa, na farko shi ne gabatarwar kumfa, bi da watsawa da wetting. Cellulose ether ƙunshi alkyl kungiyar, muhimmanci rage surface tashin hankali da interfacial makamashi na ruwa, ruwa bayani a kan aiwatar da agitation ne mai sauki don samar da yawa kananan rufaffiyar kumfa.
Gelation na cellulose ether
Cellulose ether narkar da a cikin turmi saboda ta kwayoyin sarkar methoxy da hydroxypropyl kungiyar a cikin slurry tare da alli ions da aluminum ions a cikin samuwar danko gel gel da kuma cika a ciminti turmi rata, inganta yawa na turmi, taka rawa na m cika da ƙarfafawa. Koyaya, lokacin da aka danna matrix ɗin haɗin gwiwa, polymer ba zai iya taka tsayayyen tallafi ba, don haka ƙarfi da matsi na turmi suna raguwa.
Samuwar fimcellulose ether
An kafa fim ɗin latex na bakin ciki tsakanin ether cellulose da siminti bayan hydration. Fim ɗin yana da tasirin rufewa kuma yana haɓaka busasshen busasshen busassun busassun turmi. Saboda ether cellulose yana da kyau ruwa riƙewa, kula da isasshen ruwa kwayoyin a cikin ciki na turmi, don haka tabbatar da ƙarfin siminti hydration da hardening da gaba daya ci gaba, inganta bonding ƙarfi na turmi, a lokaci guda inganta adhesiveness na siminti turmi, turmi yana da kyau plasticity da taurin, rage turmi nakasawa.
Lokacin aikawa: Afrilu-26-2024