1. A na-ekewa HPMC n'ime ụdị ngwa ngwa na ụdị mgbasa ozi ngwa ngwa
Ụdị mgbasa ozi ngwa ngwa HPMC ka ejiri mkpụrụedemede S, na glioxal ga-agbakwunye n'oge usoro mmepụta.
Ụdị ngwa ngwa HPMC anaghị atụkwasị mkpụrụedemede ọ bụla, dị ka "100000" pụtara "100000 viscosity fast dispersion type HPMC".
2. Na ma ọ bụ na-enweghị S, njirimara dị iche iche
HPMC gbasasịrị ngwa ngwa na-agbasa ngwa ngwa mgbe ọ zutere mmiri oyi wee pụọ n'ime mmiri. N'oge a, mmiri mmiri enweghị viscosity, n'ihi na HPMC na-agbasasị naanị na mmiri na-enweghị ezigbo mgbasa. Mgbe ihe dị ka nkeji abụọ gachara, viscosity nke mmiri mmiri na-eji nwayọọ nwayọọ na-abawanye, na-akpụ a transperent viscous Thick colloid.
Enwere ike ịgbasa HPMC ngwa ngwa n'ime mmiri ọkụ na ihe dịka 70 Celsius. Mgbe okpomọkụ na-adaba n'otu ọnọdụ okpomọkụ, viscosity ga-apụta nwayọọ nwayọọ ruo mgbe a ga-emepụta colloid viscous transperent.
3. Na ma ọ bụ na-enweghị S, ebumnuche dị iche
Enwere ike iji HPMC ozugbo na ntụ ntụ na ngwa agha. N'ime gluu mmiri mmiri, agba na ngwaahịa ịsacha, a ga-enwe mkpokọta mkpokọta na enweghị ike iji ya.
HPMC gbasasịrị ngwa ngwa nwere ngwa dị iche iche enwere ike iji ya na ntụ ntụ, ngwa agha, gluu mmiri, agba na ngwaahịa ịsa na-enweghị ihe ọ bụla.
Usoro mgbaze
1. Were mmiri ọkụ dị mkpa achọrọ, tinye ya n'ime akpa ma kpoo ya n'elu 80 Celsius C, ma jiri nwayọọ nwayọọ tinye ngwaahịa a n'okpuru nwayọọ nwayọọ. Cellulose na-ese n'elu mmiri na mbụ, mana ejiri nwayọọ nwayọọ gbasaa ka ọ ghọọ otu slurry. A na-eme ka ihe ngwọta dị mma mgbe ọ na-akpali.
2. N'aka nke ọzọ, kpoo 1/3 ma ọ bụ 2/3 nke mmiri ọkụ na-ekpo ọkụ n'elu 85 Celsius C, tinye cellulose iji nweta mmiri ọkụ na-ekpo ọkụ, tinyezie ihe fọdụrụ nke mmiri oyi, nọgide na-akpali akpali, ma mee ka ngwakọta ahụ dị jụụ.
3. Ntupu nke cellulose bụ dịtụ mma, na ọ dị dị ka onye ọ bụla obere ahụ na evenly kpaliri ntụ ntụ, na ọ dissolves ngwa ngwa mgbe o zutere mmiri na-etolite chọrọ viscosity.
4. Jiri nwayọọ na ọbụna tinye cellulose n'ime ụlọ okpomọkụ, na-akpalite na-aga n'ihu ruo mgbe a na-emepụta ngwọta transperent.
Kedu ihe na-emetụta njigide mmiri nke hydroxypropyl methylcellulose?
Ihe ndị a na-emetụtakarị njide mmiri nke hydroxypropyl methylcellulose HPMC ngwaahịa n'onwe ya:
1. Uniformity nke cellulose ether HPMC
A na-ekesa HPMC na-emeghachi omume nke ọma, metoxyl na hydroxypropoxyl, yana ọnụ ọgụgụ njide mmiri dị elu.
2. Thermal gelation okpomọkụ nke cellulose ether HPMC
Nke dị elu nke okpomọkụ gel thermal, nke dị elu nke njide mmiri; ma ọ bụghị ya, na-ebelata ọnụ ọgụgụ njide mmiri.
3. Cellulose ether HPMC viscosity
Mgbe viscosity nke HPMC na-abawanye, njigide mmiri na-abawanye; mgbe viscosity ruru ọkwa ụfọdụ, mmụba nke njide mmiri na-adịkarị larịị.
Mgbakwunye ego nke cellulose ether HPMC
Ọnụ ọgụgụ dị ukwuu nke cellulose ether HPMC gbakwunyere, ọnụ ọgụgụ dị elu nke njide mmiri na-eme ka mmetụta njide mmiri dịkwuo mma.
N'ihe dị iche iche nke 0.25-0.6% mgbakwunye, ọnụ ọgụgụ njide mmiri na-abawanye ngwa ngwa na mmụba nke mgbakwunye ego; mgbe ego mgbakwunye na-abawanye, mmụba na-arịwanye elu nke njide mmiri na-ebelata.
Oge nzipu: Nov-17-2022