Ana iya haɗa HPMC da CMC
Methyl cellulosefari ne ko fari kamar fibrous ko granular foda; Mara wari, mara daɗi. Wannan samfurin a cikin kumburin ruwa zuwa cikin bayani mai haske ko ɗan turbid colloidal; Rashin narkewa a cikin cikakken ethanol, chloroform ko diethyl ether. Yana da sauri tarwatse da kumbura a cikin ruwan zafi a 80-90 ℃, kuma cikin sauri narkar da bayan sanyaya. Maganin ruwa mai ruwa yana da kwanciyar hankali a dakin da zafin jiki, kuma zai iya gel a babban zafin jiki, kuma gel zai iya canzawa tare da bayani tare da zafin jiki.
Yana da kyau kwarai wettability, watsawa, mannewa, thickening, emulsification, ruwa riƙewa da kuma fim samuwar, kazalika da man fetur impermeability. Fim ɗin yana da kyakkyawan tauri, sassauci da bayyana gaskiya. Domin shi ba ionic, zai iya zama jituwa tare da sauran emulsifiers, amma yana da sauki ga gishiri fita, da kuma bayani ne barga a cikin kewayon PH2 - 12. Sodium carboxymethyl cellulose Wannan samfurin ne sodium gishiri na cellulose carboxymethyl ether, nasa ne anionic cellulose ether, shi ne fari ko milky fari fibrous foda ko barbashi 7.5.5sity centile. wari, m, hygroscopic. Sauƙi don watsawa cikin ruwa cikin bayani na gelatinous m, wanda ba zai iya narkewa a cikin ethanol da sauran kaushi na halitta.
Lokacin da pH na mai ruwa bayani ne 6.5 - 8.5, da danko na slurry rage muhimmanci a lokacin da pH ne> 10 ko <5, da kuma yi shi ne mafi kyau a lokacin da pH ne 7. Domin thermal kwanciyar hankali, da danko yakan da sauri a kasa 20 ℃, canje-canje a hankali a 45 ℃, canje-canje a hankali a 45 ℃, da kuma collo. lokaci sama da 80 ℃. Sauƙi mai narkewa a cikin ruwa, bayani mai gaskiya; Yana da matukar kwanciyar hankali a cikin bayani na alkaline, kuma yana da sauƙin yin amfani da ruwa a cikin yanayin acid. Lokacin da darajar pH ta kasance 2-3, hazo zai faru, kuma hazo kuma zai faru a cikin yanayin gishirin ƙarfe mai yawa. Hydroxypropyl methyl cellulose, kuma aka sani da hydroxypropyl methyl cellulose, cellulose hydroxypropyl methyl ether, shi ne zaɓi na sosai tsarki auduga cellulose a matsayin albarkatun kasa, karkashin alkaline yanayi ta musamman etherification da shiri.
Soluble a cikin ruwa da mafi yawan iyakacin duniya C da kuma daidai gwargwado na ethanol / ruwa, propanol / ruwa, dichloroethane, da dai sauransu, insoluble a cikin diethyl ether, acetone, cikakken ethanol, kumburi a cikin ruwan sanyi a cikin wani fili ko dan kadan turbidized colloidal bayani. Maganin ruwa mai ruwa yana da aiki na saman, babban nuna gaskiya da aikin barga.HPMCyana da dukiya na zafi gel. Bayan dumama, samfurin aqueous bayani yana haifar da hazo gel, sannan ya narke bayan sanyaya. Gel zafin jiki na daban-daban bayani dalla-dalla ne daban-daban.
Lokacin aikawa: Afrilu-25-2024