Kedu ihe dị iche n'etitihydroxypropyl methylcellulose(HPMC) nwere ma ọ bụ na-enweghị S?
1. A na-ekewa HPMC n'ime ụdị ngwa ngwa na ụdị mgbasa ozi ngwa ngwa
Ụdị nkesa ngwa ngwa HPMC na-ejikọta ya na mkpụrụedemede S. N'oge usoro mmepụta, glycoxal kwesịrị ịgbakwunye.
Ụdị ngwa ngwa HPMC anaghị agbakwunye mkpụrụedemede ọ bụla, dị ka "100000" bụ "100000 viscosity fast dispersion type HPMC".
2. Na ma ọ bụ na-enweghị S, njirimara dị iche iche
HPMC na-agbasa ngwa ngwa na-agbasa ngwa ngwa na mmiri oyi wee pụọ n'ime mmiri.N'oge a, mmiri mmiri enweghị viscosity, n'ihi na HPMC na-agbasasị naanị na mmiri, ọ dịghịkwa ezigbo mgbasa.Mgbe ihe dị ka nkeji abụọ gachara, viscosity nke mmiri mmiri na-eji nwayọọ nwayọọ na-abawanye, na-eme ka mmiri na-egbuke egbuke na-egbuke egbuke.Colloid siri ike.
Ngwa ngwa HPMC nwere ike ịgbasa ngwa ngwa na mmiri ọkụ na ihe dịka 70 Celsius.Mgbe okpomọkụ na-adaba na ụfọdụ okpomọkụ, viscosity na-apụta nwayọọ nwayọọ ruo mgbe a na-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, ihe mkpuchi na ihe nhicha, mkpọkọta ga-eme ma enweghị ike iji ya mee ihe.
HPMC na-achụsasị ngwa ngwa nwere ngwa dị ukwuu.Enwere ike iji ya na ntụ ntụ putty, ngwa agha, gluu mmiri mmiri, agba, na ngwaahịa ịsacha na-enweghị ihe ọ bụla.
Usoro mgbasa
1. Were mmiri ọkụ dị mkpa, tinye ya n'ime akpa ma kpoo ya n'elu 80 Celsius C, ma jiri nwayọọ nwayọọ tinye ngwaahịa a n'okpuru ngwa ngwa.Cellulose na-ese n'elu mmiri na mbụ, ma a na-eji nwayọọ nwayọọ gbasaa ka ọ ghọọ otu slurry.Mee ka ngwọta ahụ dị jụụ na edemede.
2. Ma ọ bụ 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, na-akpali akpali, ma mee ka ngwakọta ahụ dị jụụ.
3. Cellulose nwere a dịtụ mma ntupu nọmba, na dị ka otu obere urughuru na uniformly kpaliri ntụ ntụ, na ọ dissolves ngwa ngwa mgbe ọ na-ezute mmiri na-etolite chọrọ viscosity.
4. Tinye nwayọọ nwayọọ na cellulose na ọnụ ụlọ okpomọkụ, ma nọgide na-akpali akpali n'oge usoro mgbakwunye ruo mgbe a na-emepụta ngwọta na-egbuke egbuke.
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. Cellulose ether HPMC homogeneity
HPMC a na-emeghachi omume n'otu n'otu nwere nkesa otu nke methoxy na otu hydroxypropoxy yana njigide mmiri dị elu.
2. Cellulose ether HPMC thermal gel okpomọkụ
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-eme ka ọ dị nro.
Ọnụ ego mgbakwunye cellulose ether HPMC
Ọnụ ọgụgụ dị ukwuu nke cellulose ether HPMC agbakwunyere, ọnụ ọgụgụ dị elu nke njide mmiri na-eme ka mmetụta njide mmiri dịkwuo mma.
Na nso nke 0.25-0.6%, njigide mmiri na-abawanye ngwa ngwa na mmụba nke mgbakwunye ego;mgbe ego mgbakwunye na-abawanye, mmụba na-arịwanye elu nke njide mmiri na-eji nwayọọ nwayọọ.
Oge nzipu: Ọktoba 17-2022