HydroxyPropyl methylcellose (HPMC, hydroxypruppyl methylcellose) ndiyo polymer yakawedzera kushandiswa munzvimbo dzekuvaka, mushonga, chikafu uye mamwe minda. Iyo yakakwezva kutarisisa kwakawanda nekuda kweiyo yakasarudzika mvura yekuchengetwa kwemvura. Kuchengetwa kwemvura kunokanganisa kuita kwechigadzirwa uye kushanda kwayo kwekushandisa, saka zvakakosha kuongorora nenzira chaiyo yekuchengetedza mvura yeHPMC.
1. Chemical chimiro uye mamorekuru uremu
1.1 makemikari chimiro
HPMC ndeye polymer yakashandurwa ne methylcellose (mc) chikamu uye hydroxypruppropyl (HP) chikamu. Kuyera kwemapoka ehydrophic (senge hydroxyl uye mapoka mapoka) uye mapoka e hydrophobic (senge mapoka ePropoxic) mune yayo molecular chimiro chemucherechedzo wemvura. HPMC ine madhigirii akasiyana ekutsiva ichave nemisiyano yakakosha mumvura yayo yekuchengetwa nekuda kweiyo nhamba dzakasiyana uye kugoverwa kwemapoka ehydrophic. Dhigirii rakakwirira re hydroxyprusyl substitution inowanzoita inowedzera kudzokorora kwemvura kuita HPMC.
1.2 Molecular uremu
MaELECULAR Uremu ndechimwe chinhu chakakosha chinokanganisa kuita kweHPMC. Kazhinji, HPMC ine yakakwira molecular uremu inoumba yakasimba network network mamiriro nekuda kweiyo nguva yakareba molecular ketani, iyo inogona kutora uye kuchengetedza kunyorova zvakanyanya. Nekudaro, yakanyanya kukwirira iyo smecular uremu inogona kutungamira mukushamisira kusarudzika, iyo isiri kubaiti kune zvinoshanda zvinoshanda.
2. Solubility
Iyo solubility yeHPMC mumvura zvakananga inobata nayo mvura yayo yekuchengeta kwemvura. HPMC inoratidza yakanaka solubility mumvura inotonhora, ichigadzira yakajeka kana zvishoma turbid colodal solution. Yayo solubility inokanganiswa nekushisa, ph uye electrolyte yekusimbisa.
Kupisa
PH Kukosha: HPMC ine iyo yepamusoro solubility iri pasi peyakagwinya kana isina kusimba alkaline mamiriro. Pasi pane zvakanyanyisa acidic kana alkaline mamiriro, iyo solubility uye yekuchengetwa kwemvura inogona kukanganiswa.
Electrolyte Kusimbisa: Yakakwira Electrolyte Kunopedza Kuroverera kwemvura Kuchengetwa kweHPMC nekuti Electrolyte inogona kudyidzana nemapoka eHydrophilic muHPMC morekuru, inokanganisa kugona kwayo kusunga mvura.
3. Solution viscosity
Solution viscosity chiratidzo chakakosha kuyera kudzokorora kwemvura kuita HPMC. Iyo viscosity yeHPMC Solution inonyanya kutemwa neyechioni inorema uye yakasungirirwa. Yakakwira-viscosity HPMC Solutions inogona kuumba yakawanda yakagadziriswa hydration network network network nekuwedzera kuchengetedza kwemvura. Nekudaro, yakanyanya kukwirira viscosity inogona kukonzera matambudziko mukugadzirisa uye kushandiswa, saka chiyero chinoda kuwanikwa pakati pekuchengetwa kwemvura uye kuiswa.
4. Mhedzisiro yekuwedzera
Thihts
Mapurasitiki: Akaita seGlycrol uye ethylene Glycol, anogona kuwedzera kuchinjika uye kushanduka kweHPMC mhinduro uye kubatsira kuvandudza kudzokorora kwemvura.
Muchinjiko-chinobatanidza mumiririri: Izvo zvinobatanidza, izvo zvinowedzera simba rekugadzirisa kweHPMC Solution kuburikidza nekuyambuka-kubatanidza uye kunovandudza kuchengetedza kwemvura kwayo.
5. Kugadzirira maitiro
Mhinduro yekugadzirisa: HPMC yakanyungudutswa mumvura uye yakagadzirirwa nekudziya, kubuda, kusununguka-kupisa uye dzimwe nzira. Kuchengetwa kwemvura kwekuita kwechigadzirwa chinokonzerwa zvakanyanya neyakaenderana nekudzora tembiricha nekugadziriswa kwekugadziriswa panguva yekudzvinyirira.
Nzira yakaoma: inosanganisira yakaoma powder inosanganisa nzira, melt Extrussion nzira, nezvimwe, izvo zvinowedzera kuita kweHPMC kuburikidza nekusanganisa kwemuviri kana makemikari kugadziridzwa. Kuchengeta kwemvura kwayo kunokanganiswa nezvinhu zvakaita sekudziya tembiricha uye kusanganisa nguva.
6. Mamiriro ekunze
Mamiriro ekunze eHPMC panguva yekushandisa, akadai sekushisa, humidity, nezvimwe, zvichakanganisawo mari yayo yekuchengetedza mvura.
Kupisa
Humidity: Mune yakakwirira-yakashata nharaunda, HPMC inogona kutora zviri nani kunyorova uye kusimudzira kudzokorora kwemvura, asi kunyorova kwakanyanyisa kunogona kukonzera kuwedzera kwechigadzirwa.
Ultraviolet mwenje: Kurarama kwenguva refu kuIltraviolet mwenje kunogona kukonzera hpmc kusvibisa uye kuderedza mari yayo yekuchengetwa kwemvura.
7. Nzvimbo dzekushandisa
Minda yakasarudzika yekushandisa ine zvakasiyana zvinodikanwa zvekuchengetedza kwemvura kweHPMC. Mumunda wezvivakwa zvekuvaka, HPMC inoshandiswa seyemumiriri wekuchengetedza mvura kuti ive motsi yemvura, uye kuita kwayo kwemvura-kudzora kunobata basa rekushanda uye kupenga kuramba kwemarara. Mumunda wemishonga, HPMC inowanzoshandiswa se piritsi yekuvhara zvinyorwa, uye zvivakwa zvemvura zvipo zvinokanganisa zvinyoronyoro nekumhanya kwemapiritsi. Mundima yekudya, HPMC inoshandiswa seanoshandiswa sediki uye stabilizer, uye zvivakwa zvemvura zvacho zvinokonzeresa zvinokanganisa kuravira uye kuumbwa kwechigadzirwa.
8. Nzira dzekuongorora
Mvura Kupfuura Kuyera
Kurasikirwa kwemvura chiyero chekuyera
Kubata kwemvura kwemvura: Iko kuita kwemvura-mango kweHPMC kunoongororwa nekuongorora kugona kwayo kubata mvura pasi pemamiriro akasiyana-siyana.
Kuchengetwa kwemvura kweHPMC kwakatemerwa nezvinhu zvakasiyana-siyana zvakadai semakemikari zvimiro, soluluilation, solubility, pesvedzero yekuwedzera, maitiro ekugadzirira, mamiriro ekugadzirira uye minda yekushandisa. Mune zvinoshanda zvinoshandiswa, izvi zvinhu zvinofanirwa kuve zvakanangana nekufungidzirwa kuti zvinokwanisa kurongedza formula uye maitiro eHPMC kuti uwane iyo yakanakisa mvura yekuchengetedza mvura. Kuburikidza nekururamisa Fomu Dhizaini uye Kugadzirisa Kwekuita, Kugadziriswa kwemvura kweHPMC kunogona kuzoshandiswa zvizere uye kunaka uye kuita kwechigadzirwa kunogona kuvandudzwa.
Kutumira Nguva: Kukadzi-17-2025