Haɗin turmi mai zurfi, wanda ke taka muhimmiyar rawa wajen inganta aikin gina turmi mai gauraye busasshe, ya kai fiye da kashi 40% na farashin kayan aiki a turmi mai gauraye busasshe. Yawancin haɗin da ke kasuwar gida masana'antun ƙasashen waje ne ke samar da su, kuma masu samar da kayayyaki ma suna samar da ƙimar da aka yi amfani da ita. Farashin samfurin turmi mai gauraye busasshe ya kasance mai yawa saboda haka, kuma yana da wuya a yaɗa turmi mai gauraye da filastik na yau da kullun tare da adadi mai yawa da kewayon da yawa. Kayayyakin kasuwa masu tsada suna ƙarƙashin ikon kamfanonin ƙasashen waje, kuma masana'antun turmi mai gauraye busasshe suna da ƙarancin riba da ƙarancin araha; aikace-aikacen haɗin ba shi da bincike mai tsari da niyya, kuma yana bin dabarun ƙasashen waje a makance. A nan, abin da muke raba muku shine, menene rawar da hydroxypropyl methylcellulose ke takawa a cikin haɗin turmi mai gauraye busasshe?
Hydroxypropyl methylcellulose nau'in cellulose ne wanda fitarwa da amfaninsa ke ƙaruwa cikin sauri a cikin 'yan shekarun nan. Ana yin Hydroxypropyl methylcellulose ne da auduga mai tsafta bayan maganin alkali, ana amfani da propylene oxide da methyl chloride a matsayin sinadaran etherification, wani gaurayen cellulose wanda ba ionic ba ne wanda aka samar ta hanyar jerin halayen. Matsayin maye gurbin gabaɗaya shine 1.2~2.0. Abubuwan da ke cikinsa sun bambanta dangane da rabon abun ciki na methoxyl da abun ciki na hydroxypropyl. Halayen hydroxypropyl methylcellulose sune kamar haka:
1. Hydroxypropyl methylcellulose yana narkewa cikin ruwan sanyi cikin sauƙi, kuma zai fuskanci matsaloli wajen narkewa a cikin ruwan zafi. Amma zafin gelation ɗinsa a cikin ruwan zafi ya fi na methyl cellulose girma sosai. Narkewar da ke cikin ruwan sanyi kuma yana da kyau sosai idan aka kwatanta da methyl cellulose.
2. Dankowar hydroxypropyl methylcellulose tana da alaƙa da nauyin kwayoyin halittarta. Girman nauyin kwayoyin halittar, haka nan girman dankowar. Zafin jiki kuma yana shafar dankowarta, yayin da zafin jiki ke ƙaruwa, dankowar yana raguwa. Duk da haka, tasirin dankowarta da zafin jikinta ya yi ƙasa da na methyl cellulose. Maganinta yana da ƙarfi idan aka adana shi a zafin jiki na ɗaki.
3. Rikewar ruwa na hydroxypropyl methylcellulose ya dogara da adadin ƙarinsa, dankonsa, da sauransu, kuma yawan riƙewar ruwa a ƙarƙashin adadin ƙarin ya fi na methyl cellulose girma.
4. Hydroxypropyl methylcellulose yana da daidaito ga acid da alkali, kuma ruwan da ke cikinsa yana da daidaito sosai a cikin pH = 2 ~ 12. Soda mai kauri da ruwan lemun tsami ba su da tasiri sosai kan aikinsu, amma alkali na iya hanzarta narkewarsa da kuma ƙara ɗanɗanonsa. Hydroxypropyl methylcellulose yana da daidaito ga gishirin da aka saba da shi, amma idan yawan ruwan gishiri ya yi yawa, ɗanɗano na ruwan hydroxypropyl methylcellulose yana ƙaruwa.
5. Ana iya haɗa Hydroxypropyl methylcellulose da polymers masu narkewa cikin ruwa don samar da mafita mai kama da juna kuma mafi girma. Kamar polyvinyl alcohol, sitaci ether, kayan lambu danko, da sauransu.
6. Hydroxypropyl methylcellulose yana da juriyar enzyme mafi kyau fiye da methylcellulose, kuma yiwuwar lalacewar enzyme na maganin sa ya yi ƙasa da na methylcellulose.
7. Mannewar hydroxypropyl methylcellulose ga ginin turmi ya fi na methylcellulose girma.
Lokacin Saƙo: Mayu-09-2023