Ma'aunin danko na hydroxypropyl methylcellulose ma'auni ne mai matuƙar muhimmanci. Danko ba ya wakiltar tsarki. Danko na cellulose HPMC ya dogara ne akan tsarin samarwa. Yanayin amfani daban-daban ya kamata a zaɓi cellulose HPMC tare da danko daban-daban, ba girman danko na cellulose HPMC ba, mafi kyau! Abin da ke daidai shine daidai!
1. Kula da danko
Hydroxypropyl methylcellulose mai yawan danko ba zai iya samar da cellulose mai yawan danko ba sai ta hanyar amfani da injin tsotsar ruwa da kuma maye gurbin nitrogen a lokacin samarwa. Gabaɗaya, ba za a iya sarrafa samar da cellulose mai yawan danko a China ba. Duk da haka, idan za a iya sanya na'urar auna iskar oxygen a cikin injin, za a iya sarrafa samar da dankonsa ta hanyar wucin gadi.
2. Amfani da wakilin haɗin gwiwa
Bugu da ƙari, idan aka yi la'akari da saurin maye gurbin nitrogen, yana da sauƙi a samar da samfuran da ke da ɗanɗano mai yawa komai yadda tsarin yake rufewa da iska. Tabbas, matakin polymerization na auduga mai kyau shima yana da mahimmanci. Idan hakan bai yi aiki ba, to yi shi da haɗin hydrophobic. Akwai wakilan haɗin gwiwa a wannan yanki a China. Wace irin wakilin haɗin gwiwa za a zaɓa tana da babban tasiri akan aikin samfurin ƙarshe.
3. Abubuwan da ke cikin Hydroxypropyl
Iskar oxygen da ke cikin reactor yana haifar da lalacewar cellulose da raguwar nauyin kwayoyin halitta, amma iskar oxygen da ta rage tana da iyaka, matuƙar an sake haɗa ƙwayoyin da suka karye, ba shi da wahala a sami ɗanko mai yawa. Duk da haka, ƙimar jikewa tana da alaƙa da yawan sinadarin hydroxypropyl. Wasu masana'antu suna son rage farashi da farashi ne kawai, amma ba sa son ƙara yawan sinadarin hydroxypropyl, don haka ingancin ba zai iya kaiwa ga matakin irin waɗannan samfuran ƙasashen waje ba.
4. Wasu dalilai
Yawan riƙe ruwa na samfurin yana da kyakkyawar alaƙa da hydroxypropyl, amma ga dukkan tsarin amsawar, yana kuma ƙayyade yawan riƙe ruwa, tasirin alkali, rabon methyl chloride da propylene oxide, yawan alkali da riƙe ruwa. Rabon da aka samu da auduga mai tsafta yana ƙayyade aikin samfurin.
Lokacin Saƙo: Afrilu-04-2023