▲Hydroxypropyl methyl cellulose (HPMC)bụ ntụ ọcha na-enweghị isi, enweghị uto, ọ naghịkwa egbu egbu. Mgbe ọ gbazere kpamkpam n'ime mmiri, hydroxypropyl methyl cellulose ga-emepụta colloid viscous doro anya.
▲ Isi ihe ndị e ji hydroxypropyl methyl cellulose (HPMC) mee: owu a nụchara anụcha, methyl chloride, propylene oxide, na ihe ndị ọzọ e ji arụpụta ihe, caustic soda, acid, toluene, isopropanol, wdg.
Ntụnyere uru na ọghọm nke hydroxypropyl methyl cellulose:
1. hydroxypropyl methyl cellulose dị ọcha HPMC na-adị nro n'anya ma nwee obere njupụta buru ibu, yana nha nke 0.3–0.4/ml.
HPMC a gwakọtara agwakọta nwere ezigbo mmiri mmiri ma na-adị arọ, nke dị nnọọ iche na ezigbo ngwaahịa ahụ n'ọdịdị ya.
2.Ngwọta mmiri dị ọcha nke hydroxypropyl methyl cellulose HPMC doro anya, nnyefe ọkụ dị elu, ọnụego njigide mmiri > 97%.
Mmiri HPMC a gwakọtara agwakọta ruru unyi, ọ na-esikwa ike iru pasentị iri asatọ.
3. HPMC dị ọcha ekwesịghị isi ísì ammonia, starch na mmanya.
HPMC a gwakọtara agwakọta nwere ike isi ụdị ụtọ dị iche iche, ọbụlagodi na ọ nweghị ụtọ, ọ ga-adị arọ.
4. Ntụ ntụ hydroxypropyl methyl cellulose HPMC dị ọcha na-adị nro n'okpuru igwe microscope ma ọ bụ iko na-eme ka ọ dị elu.
Enwere ike ịhụ HPMC a gwakọtara agwakọta dị ka ihe siri ike ma ọ bụ kristal n'okpuru microscope ma ọ bụ iko na-eme ka ọ dị elu.
Site n'akụkụ dị aṅaa ka a ga-esi mata uru na ọghọm nke hydroxypropyl methyl cellulose?
1. ọkwa ọcha
Ọ bụ ezie na ọcha enweghị ike ikpebi ma HPMC ọ dị mfe iji, ọ bụrụkwa na etinyere ihe ndị na-eme ka ọcha dị ọcha n'oge mmepụta, ọ ga-emetụta àgwà ya. Agbanyeghị, ọtụtụ n'ime ngwaahịa ndị dị mma nwere ezigbo ọcha.
2. Ịdị mma
Ịdị mma nke HPMC na-enwekarị ntupu 80 na ntupu 100, ka ịdị mma ahụ na-aka mma, n'ozuzu ya, ka ọ na-aka mma.
3. Nnyefe
Tinyehydroxypropyl methyl cellulose (HPMC)n'ime mmiri iji mepụta colloid doro anya, ma lelee nnyefe ìhè ya. Ka nnyefe ìhè dị elu, otú ahụ ka ọ ka mma, nke na-egosi na enweghị ihe ndị na-agbaze na ya. Njupụta nke reactors kwụ ọtọ na-adịkarị mma, ebe nke reactors kwụ ọtọ ka njọ.
4. Oke
Ka ike ndọda ahụ buru ibu, otú ahụ ka ọ na-adị arọ karị. Nkọwapụta ya buru ibu, n'ozuzu ya n'ihi na ọdịnaya nke otu hydroxypropyl dị na ya dị elu, na ọdịnaya nke otu hydroxypropyl dị elu, otú ahụ ka njide mmiri ka mma.
Oge ozi: Eprel-25-2024