Amfani da cellulose a matsayin albarkatun kasa.CMC-Naan shirya ta hanyar mataki biyu. Na farko shine tsarin alkalization na cellulose. A cellulose reacts da sodium hydroxide don samar da alkali cellulose, sa'an nan kuma alkali cellulose reacts da chloroacetic acid don samar da CMC-Na, wanda ake kira etherification.
Dole ne tsarin amsawa ya zama alkaline. Wannan tsari yana cikin hanyar haɗin ether na Williamson. Hanyar amsawa shine maye gurbin nucleophilic. Tsarin amsawa shine alkaline, kuma yana tare da wasu halayen gefe a gaban ruwa, irin su sodium glycolate, glycolic acid da sauran abubuwan da aka samu. Saboda kasancewar halayen gefe, za a ƙara yawan amfani da alkali da etherification wakili, don haka rage yawan etherification; A lokaci guda, sodium glycolate, glycolic acid da ƙarin ƙazanta na gishiri za a iya haifar da su a cikin halayen gefe, yana haifar da tsafta da raguwar aikin. Don kawar da halayen gefe, ba lallai ba ne kawai don amfani da alkali a hankali ba, har ma don sarrafa yawan tsarin ruwa, ƙaddamar da alkali da kuma hanyar motsa jiki don manufar isassun alkali. A lokaci guda, ya kamata a yi la'akari da buƙatun samfurin akan danko da digiri na maye gurbin, kuma ya kamata a yi la'akari da saurin motsawa da zafin jiki gabaɗaya. Sarrafa da sauran dalilai, ƙara yawan etherification, da kuma hana abin da ya faru na halayen gefe.
A cewar daban-daban etherification kafofin watsa labarai, da masana'antu samar na CMC-Na za a iya raba kashi biyu Categories: ruwa-tushen hanya da sauran ƙarfi tushen hanya. Hanyar yin amfani da ruwa a matsayin matsakaiciyar amsawa ana kiranta hanyar ruwa mai mahimmanci, wanda ake amfani dashi don samar da matsakaici na alkaline da ƙananan CMC-Na. Hanyar yin amfani da kwayoyin halitta kamar yadda ake kira matsakaiciyar amsawa ana kiranta hanyar warwarewa, wanda ya dace da samar da matsakaici da babban darajar CMC-Na. Wadannan halayen guda biyu ana yin su ne a cikin kullun, wanda ke cikin tsarin kullun kuma a halin yanzu shine babbar hanyar samar da CMC-Na.
Hanyar matsakaicin ruwa:
Hanyar hanyar ruwa shine tsarin samar da masana'antu a baya, wanda shine amsa alkali cellulose da etherification wakili a ƙarƙashin yanayin alkali da ruwa kyauta. A lokacin alkalization da etherification, babu wani matsakaicin kwayoyin halitta a cikin tsarin. Abubuwan da ake buƙata na kayan aiki na hanyar watsa labaru na ruwa suna da sauƙi, tare da ƙananan zuba jari da ƙananan farashi. Rashin hasara shine rashin babban adadin matsakaicin ruwa, zafin da aka haifar da shi yana ƙara yawan zafin jiki, yana haɓaka saurin halayen gefe, yana haifar da ƙarancin etherification, da ƙarancin samfurin. Ana amfani da hanyar don shirya samfuran CMC-Na matsakaita da ƙarancin ƙima, kamar kayan wanke-wanke, ma'aunin ƙima da makamantansu.
Hanyar narkewa:
Har ila yau ana kiran hanyar warwarewar hanyar hanyar narkewar kwayoyin halitta, kuma babban fasalinsa shine cewa alkalization da etherification halayen ana aiwatar da su a ƙarƙashin yanayin kaushin kwayoyin halitta azaman matsakaiciyar amsawa (diluent). Dangane da adadin diluent mai amsawa, an raba shi zuwa hanyar kneading da hanyar slurry. Hanyar warwarewa iri ɗaya ce da tsarin amsawar hanyar ruwa, kuma ta ƙunshi matakai biyu na alkalization da etherification, amma matsakaicin amsawar waɗannan matakan biyu ya bambanta. Hanyar mai narkewa tana adana tsarin jiƙa alkali, dannawa, murƙushewa, tsufa da sauran abubuwan da ke cikin hanyar ruwa, kuma alkalization da etherification ana aiwatar da su a cikin ƙwanƙwasa. Rashin hasara shi ne cewa yanayin zafin jiki yana da ƙarancin talauci, kuma buƙatun sararin samaniya da farashi suna da yawa. Tabbas, don samar da shimfidu na kayan aiki daban-daban, wajibi ne don sarrafa tsarin zafin jiki sosai, lokacin ciyarwa, da sauransu, don samfuran samfuran da ke da inganci da inganci za a iya shirya su.
Lokacin aikawa: Afrilu-25-2024