Ƙaƙƙarfan ƙanƙara mai zurfi, wanda ke taka muhimmiyar rawa wajen inganta aikin ginin busassun busassun, yana da fiye da kashi 40 cikin 100 na farashin kayan a cikin busassun turmi. Yawancin abubuwan da aka haɗa a cikin kasuwannin cikin gida masana'antun ƙasashen waje ne ke kawo su, kuma adadin adadin samfuran kuma masu samar da kayayyaki suna samar da su. Farashin kayan busassun busassun turmi ya kasance mai girma haka, kuma yana da wahala a yada turmi na gama-gari da plastering tare da adadi mai yawa da kewayo. Kamfanonin kasashen waje ne ke sarrafa kayayyakin kasuwa masu inganci, kuma masu sana'ar busassun turmi da aka cakude suna da karancin riba da karancin farashi; aikace-aikace na admixtures ba shi da tsari da bincike da aka yi niyya, kuma a makance yana bin ka'idodin ƙasashen waje. Anan, abin da muke raba tare da ku shine, menene matsayin hydroxypropyl methylcellulose a cikin hadaddiyar giyar busassun turmi?
Hydroxypropyl methylcellulose wani nau'in cellulose ne wanda kayan aiki da amfaninsa ke karuwa cikin sauri a cikin 'yan shekarun nan. Hydroxypropyl methylcellulose an yi shi da auduga mai ladabi bayan maganin alkalization, ta amfani da propylene oxide da methyl chloride a matsayin etherification jamiái , wanda ba ionic cellulose gauraye ether yi ta hanyar jerin halayen. Matsakaicin maye gaba ɗaya shine 1.2 ~ 2.0. Kaddarorinsa sun bambanta dangane da rabon abun ciki na methoxyl da abun ciki na hydroxypropyl. Halayen hydroxypropyl methylcellulose sune kamar haka:
1. Hydroxypropyl methylcellulose yana da sauƙin narkewa a cikin ruwan sanyi, kuma zai gamu da matsaloli wajen narkewa cikin ruwan zafi. Amma zafinsa na gelation a cikin ruwan zafi yana da girma fiye da na methyl cellulose. Solubility a cikin ruwan sanyi kuma yana inganta sosai idan aka kwatanta da methyl cellulose.
2. Dankowar hydroxypropyl methylcellulose yana da alaƙa da nauyin kwayoyinsa. Girman nauyin kwayoyin halitta, mafi girma da danko. Hakanan yanayin zafi yana rinjayar danko, yayin da zafin jiki ya karu, danko yana raguwa. Duk da haka, tasirin babban danko da zafinsa ya yi ƙasa da na methyl cellulose. Maganin sa yana da ƙarfi idan an adana shi a cikin zafin jiki.
3. Riƙewar ruwa na hydroxypropyl methylcellulose ya dogara da adadin adadinsa, danko, da dai sauransu, kuma yawan ajiyar ruwa a ƙarƙashin adadin adadin adadin ya fi na methyl cellulose.
4. Hydroxypropyl methylcellulose yana da kwanciyar hankali ga acid da alkali, kuma maganinsa na ruwa yana da matukar kwanciyar hankali a cikin kewayon pH = 2 ~ 12. Caustic soda da ruwan lemun tsami suna da ɗan tasiri akan aikin sa, amma alkali na iya hanzarta rushewar kuma ya ɗan ƙara danko. Hydroxypropyl methylcellulose ya tsaya tsayin daka ga gishiri na kowa, amma lokacin da maida hankali na maganin gishiri ya yi girma, dankowar maganin hydroxypropyl methylcellulose yana kula da karuwa.
5. Hydroxypropyl methylcellulose za a iya gauraye da ruwa-soluble polymers don samar da wani uniform da mafi girma danko bayani. Kamar polyvinyl barasa, sitaci ether, kayan lambu danko, da dai sauransu.
6. Hydroxypropyl methylcellulose yana da mafi kyawun juriya na enzyme fiye da methylcellulose, kuma yiwuwar lalatawar enzymatic na maganin sa yana ƙasa da na methylcellulose.
7. Adhesion na hydroxypropyl methylcellulose zuwa turmi gini ya fi na methylcellulose.
Lokacin aikawa: Mayu-09-2023