Carboxymethyl cellulose (Sodium Carboxymethyl Cellulose) ake magana a kai a matsayin CMC, shi ne wani surface aiki colloid polymer fili, shi ne wani irin wari, m, ba mai guba da ruwa mai narkewa cellulose wanda aka samu, An yi shi da absorbent auduga ta jiki-sunadarai magani. 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 a kira shi 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 shi za a iya amfani da matsayin dispersant da stabilizer ga refractory slurries 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 saman barbashi, infiltrating da kuma haɗa barbashi da kyau, don haka mafi girma ƙarfi refractory jiki za a iya samu;
2. Tun da carboxymethyl cellulose ne anionic polymer electrolyte, zai iya rage hulɗar tsakanin barbashi bayan an adsorbed a saman da barbashi, da kuma taka rawar da dispersant da m colloid, don haka inganta yawa da kuma ƙarfi daga cikin samfurin da kuma rage. bayan-ƙonawa. Rashin daidaituwa na tsarin kungiya;
3. Yin amfani da carboxymethyl cellulose a matsayin mai ɗaure, babu toka bayan ƙonawa, kuma akwai ƙananan ƙananan abubuwa masu narkewa, wanda ba ya shafar yawan zafin jiki na samfurin.
Siffofin Samfur
1. CMC fari ne ko dan kadan rawaya fibrous granular foda, m, wari, mara guba, sauƙi mai narkewa a cikin ruwa, da kuma Forms wani m viscous colloid, da 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. Duk da haka, saboda saurin canjin zafin jiki, acidity da alkalinity na bayani sun canza. A ƙarƙashin rinjayar ultraviolet radiation 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 formaldehyde, phenol, benzoic acid, mahadi na mercury, da dai sauransu.
2. CMC daidai yake da sauran polymer electrolytes. Idan ya narke, sai ya fara haifar da kumburi, kuma ɓangarorin suna manne da juna don samar da fim ko viscose, wanda ya sa ba zai yiwu ya tarwatse ba, amma a hankali ya narke. 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. A cikin yanayi, matsakaicin matsakaicin abun ciki na ruwa na CMC yana ƙaruwa tare da haɓakar yanayin iska kuma yana raguwa tare da karuwar yawan zafin jiki. Lokacin da matsakaicin zafin jiki na dakin ya kasance 80%-50%, ma'aunin ruwa yana sama da 26%, kuma abun cikin ruwan samfurin 10% ko ƙasa da haka. Sabili da haka, marufi da ajiya ya kamata su kula da tabbatar da danshi.
4. Zinc, jan karfe, gubar, aluminum, azurfa, baƙin ƙarfe, tin, chromium da sauran gishiri mai nauyi na iya haifar da maganin CMC mai ruwa. Sai dai acetate gubar tushen gishiri, ana iya sake narkar da hazo a cikin sodium hydroxide ko maganin ammonium hydroxide. .
5. Organic ko inorganic acid shima zai haifar da hazo ga maganin wannan samfurin. Lamarin hazo ya bambanta da nau'i da tattarawar acid. Gabaɗaya, hazo yana faruwa lokacin da pH ke ƙasa da 2.5, kuma ana iya dawo da shi bayan neutralization tare da alkali.
6. A cikin gishiri irin su calcium, magnesium da gishiri na tebur, ba shi da tasirin hazo akan maganin CMC, amma yana rinjayar raguwar danko.
7. CMC ya dace da sauran manne masu narkewa da ruwa, masu laushi da resins.
8. Fim ɗin da aka zana daga CMC, wanda aka nutsar da shi a cikin acetone, benzene, butyl acetate, carbon tetrachloride, man castor, man masara, ethanol, ether, dichloroethane, man fetur, methanol, methyl acetate, methyl ethyl acetate a dakin da zafin jiki Ketone, toluene, turpentine, xylene, man gyada, da sauransu na iya canzawa cikin sa'o'i 24
Lokacin aikawa: Nuwamba-07-2022