Carboxymethyl celluloseSodium Carboxymethyl Cellulose), ake magana a kai da CMC, wani fili ne na polymer na fili mai aiki colloid. Ba shi da wari, mara ɗanɗano, wanda ba shi da guba mai narkewar ruwa mai narkewa. Abin da aka samu Organic cellulose binder, wani nau'in ether ne na cellulose, kuma ana amfani da gishiri na sodium gaba ɗaya, don haka cikakken sunansa ya kamata ya zama sodium carboxymethyl cellulose, wato, CMC-Na.
Kamar methyl cellulose, carboxymethyl cellulose za a iya amfani da matsayin surfactant for refractory kayan da kuma a matsayin wucin gadi daure ga refractory kayan.
Sodium carboxymethyl cellulose ne roba polyelectrolyte, don haka za a iya amfani da a matsayin dispersant da stabilizer ga refractory laka da castables, kuma shi ne ma wani wucin gadi high-inganci Organic ɗaure. Yana da fa'idodi masu zuwa:
1. Carboxymethyl cellulose za a iya adsorbed da kyau a kan surface na barbashi, da kyau infiltrated da kuma alaka da barbashi, don haka high-ƙarfi refractory blanks za a iya samar;
2. Tun carboxymethyl cellulose ne anionic polymer electrolyte, shi zai iya rage hulɗar tsakanin barbashi bayan da ake adsorbed a kan barbashi surface, da kuma aiki a matsayin dispersant da m colloid, don haka inganta yawa da kuma ƙarfi daga cikin samfurin da kuma rage afterburning Inhomogeneity. tsarin kungiya;
3. Yin amfani da carboxymethyl cellulose a matsayin mai ɗaure, babu toka bayan ƙonawa, kuma akwai ƙananan ƙananan kayan narkewa, wanda ba zai shafi yanayin sabis na samfurin ba.
Siffofin samfur:
1. CMC fari ko yellowish fibrous granular foda, m, wari, mara guba, sauƙi mai narkewa a cikin ruwa, da kuma Forms wani m viscous colloid, da kuma bayani ne tsaka tsaki ko dan kadan alkaline. Ana iya adana shi na dogon lokaci ba tare da lalacewa ba, kuma yana da kwanciyar hankali a ƙarƙashin ƙananan zafin jiki da hasken rana. Koyaya, saboda saurin canjin yanayin zafi, acidity da alkalinity na maganin zasu canza. A karkashin rinjayar ultraviolet haskoki da microorganisms, shi ma zai haifar da hydrolysis ko hadawan abu da iskar shaka, da danko na bayani zai ragu, kuma ko da bayani za a gurbace. Idan maganin yana buƙatar adana na dogon lokaci, ana iya zaɓar abubuwan da suka dace, kamar su formaldehyde, phenol, benzoic acid, da mahadi na mercury.
2. CMC daidai yake da sauran polymer electrolytes. Idan ya narke, sai ya fara kumbura, sai barbashi su manne da juna su samar da fim ko gungun viscose, ta yadda ba za a iya tarwatsa su ba, amma sai a hankali narkar da su. Saboda haka, a lokacin da shirya ta aqueous bayani, idan barbashi za a iya uniformly wetted farko, da rushe kudi za a iya muhimmanci ƙara.
3. CMC ne hygroscopic. Matsakaicin danshi na CMC a cikin yanayi yana ƙaruwa tare da karuwar zafin iska kuma yana raguwa tare da karuwar yawan zafin jiki. Lokacin da matsakaicin zafin jiki na dakin ya kasance 80% -50%, danshin ma'auni yana sama da 26%, kuma danshin samfurin ƙasa da 10%. Sabili da haka, marufi da ajiya ya kamata su kula da tabbatar da danshi.
4. Gishiri mai nauyi irin su zinc, jan karfe, gubar, aluminum, azurfa, baƙin ƙarfe, tin, chromium, da dai sauransu, na iya haifar da hazo a cikin maganin ruwa na CMC, kuma har yanzu ana iya sake narkar da hazo a cikin sodium hydroxide ko ammonium hydroxide bayani. sai dai ainihin gubar acetate .
5. Organic ko inorganic acid shima zai haifar da hazo a cikin maganin wannan samfurin. Lamarin hazo ya banbanta saboda nau'i da tattarawar acid din. Gabaɗaya, hazo yana faruwa ƙasa da pH 2.5, kuma ana iya dawo da shi bayan neutralization ta ƙara alkali.
6. Gishiri irin su calcium, magnesium da gishiri na tebur ba su da tasirin hazo akan maganin CMC, amma yana rinjayar rage danko.
7. CMC ya dace da sauran manne masu narkewa da ruwa, masu laushi da resins.
8. Fim ɗin da CMC ya zana yana nutsewa a cikin acetone, benzene, butyl acetate, carbon tetrachloride, castor oil, masara mai, ethanol, ether, dichloroethane, man fetur, methanol, methyl acetate, methyl ethyl ether a dakin da zafin jiki Ketone, toluene, turpentine. , xylene, man gyada, da dai sauransu na iya canzawa cikin sa'o'i 24.
Lokacin aikawa: Janairu-05-2023