Hali:Hydroxyethyl Cellulose (HEC CAS: 9004-62-0) fari ne ko rawaya mara wari, mara wari, kuma foda mai sauƙi.Mai narkewa a cikin ruwan sanyi da ruwan zafi, amma gabaɗaya maras narkewa a cikin mafi yawan kaushi na halitta.Ƙimar pH tana canzawa kaɗan a cikin kewayon 2-12, amma danko yana raguwa fiye da wannan kewayon.
Daraja:Hydroxyethyl Cellulose (HEC CAS: 9004-62-0) shine mai kauri da aka saba amfani da shi don tawada na tushen ruwa mai tushe na cellulose ether.Yana da wani fili nonionic mai narkewa mai ruwa wanda ke da kyakkyawan iya yin kauri don ruwa, ana iya lalata shi ta hanyar oxygen, acid, da enzymes, kuma Cu2+ na iya haye shi a ƙarƙashin yanayin alkaline.Yana da kwanciyar hankali, ba ya bayyana gel a lokacin dumama, ba ya haɓaka a ƙarƙashin yanayin acidic, kuma yana da kyawawan kayan aikin fim.Maganin sa na ruwa za a iya sanya shi cikin fina-finai masu haske, wanda za'a iya samuwa ta hanyar aikin alkaline cellulose da Chemicalbook ethylene oxide, kuma yana da kaddarorin kauri, emulsification, adhesion, dakatarwa, yin fim, riƙe da danshi, da kariya ta colloid.Matsayin masu kauri a cikin tawada na tushen ruwa shine a yi kauri.Ƙara masu kauri zuwa tawada yana ƙara danko, wanda zai iya inganta daidaiton jiki da sinadarai na tawada;Saboda karuwa a cikin danko, ana iya sarrafa rheology na tawada a lokacin bugawa;Launi da filler a cikin tawada ba su da sauƙi don hazo, yana ƙaruwa da kwanciyar hankali na tawada na tushen ruwa.
Hanyar samarwa: Alkalin cellulose shine polymer na halitta wanda ya ƙunshi ƙungiyoyin hydroxyl guda uku akan kowane zoben tushe na fiber.Ƙungiyar hydroxyl mafi aiki tana amsawa don samar da hydroxyethyl cellulose.A jiƙa ɗanyen auduga ko kuma tsaftataccen ɓangaren litattafan almara a cikin alkali ruwa 30%, sannan a fitar da shi don dannawa bayan rabin sa'a.Latsa har sai ruwan alkaline ya kai 1:2.8, sannan a murkushe shi.Ana saka alkali cellulose da aka niƙasa a cikin reactor, a rufe, a shafe shi, kuma a cika shi da nitrogen.Littattafan sinadarai akai-akai ana sharewa kuma an cika shi da nitrogen don maye gurbin duk iskar da ke cikin reactor.Latsa cikin precooled ethylene oxide ruwa, shigar da ruwa mai sanyaya cikin jaket ɗin reactor, kuma sarrafa zafin zafin jiki zuwa kusan 25 ℃ na 2h don samun samfurin ɗanyen hydroxyethyl cellulose.An wanke danyen samfurin tare da barasa, an cire shi da acetic acid zuwa pH 4-6, kuma an haɗa shi da glioxal don tsufa.Sa'an nan kuma a wanke da ruwa, centrifuge, dehydrate, bushe, da niƙa don samun hydroxyethyl cellulose.
Lokacin aikawa: Maris 28-2023
