Index ea viscosity ea hydroxypropyl methylcellulose ke index ea bohlokoa haholo.Viscosity ha e emele bohloeki.The viscosity ea cellulose HPMC itšetlehile ka tshebetso ya tlhahiso.Libaka tse fapaneng tsa ts'ebeliso li lokela ho khetha HPMC ea cellulose e nang le li-viscosity tse fapaneng, eseng ho phahama ha viscosity ea cellulose HPMC, ho molemo!Se loketseng se nepahetse.
Taolo ea Viscosity
1. Tlhahisong ea high-viscosity hydroxypropyl methylcellulose, vacuuming le naetrojene feela e ke keng ea hlahisa selulose e phahameng haholo.Ka kakaretso, tlhahiso ea cellulose e phahameng ea viscosity Chaena e ke ke ea laoloa.Leha ho le joalo, haeba meter ea trace oksijene e ka kenngoa ka kettle, tlhahiso ea viscosity ea eona e ka laoloa ka maiketsetso.
Tšebeliso ea moemeli oa mokhatlo
2. Ho phaella moo, ha ho nahanoa ka lebelo la ho fetola naetrojene, ho bonolo ho hlahisa lihlahisoa tse nang le viscosity e phahameng ho sa tsotellehe hore na tsamaiso e na le moea o matla hakae.Ehlile, tekanyo ea polymerization ea k'hothone e hloekisitsoeng le eona e bohlokoa.Haeba seo se sa sebetse, se etse ka hydrophobic association.Ho na le baemeli ba mekhatlo sebakeng sena Chaena.Ke mofuta ofe oa moemeli oa mokhatlo oo u ka o khethang o nang le tšusumetso e kholo ts'ebetsong ea sehlahisoa sa ho qetela.
Likahare tsa Hydroxypropyl
3. Oksijene e setseng ka har'a reactor e lebisa ho senyeha ha selulose le ho theola boima ba limolek'hule.Leha ho le joalo, haeba oksijene e setseng e lekanyelitsoe, hafeela limolek'hule tse robehileng li kopantsoe hape, ha ho thata ho etsa viscosity e phahameng.Leha ho le joalo, sekhahla sa saturation se amana haholo le litaba tsa hydroxypropyl.Lifeme tse ling li batla feela ho fokotsa litšenyehelo le theko, empa ha li ikemisetse ho eketsa litaba tsa hydroxypropyl, kahoo boleng bo ke ke ba fihla boemong ba lihlahisoa tse tšoanang tsa linaheng tse ling.
lintlha tse ling
4. Tekanyo ea ho boloka metsi ea sehlahisoa e na le kamano e kholo le hydroxypropyl, empa e boetse e etsa qeto ea tekanyo ea ho boloka metsi, phello ea alkalization, karolelano ea methyl chloride le propylene oxide, le mahloriso a alkali bakeng sa ts'ebetso eohle ea ho itšoara.Bobeli karo-karolelano ea metsi le k'hothone e hloekisitsoeng e khetholla ts'ebetso ea sehlahisoa.
Nako ea poso: Apr-03-2023