HydroxyPropyl methylcellose (HPMC) iri polymer inoshandiswa zvakanyanya mumishonga, cosmetics, uye maindasitiri ezvekudya nekuda kwezvivakwa zvaro, kusanganisira kugona kwayo kugadzirisa maitiro uye kuchengetwa kwemvura. Kupfuura basa rayo rekutanga senge rakakomberedza kana gelling mumiririri, HPMC inogona kupesvedzera kuchengetwa kwemvura muPoders kuburikidza nemirairo dzakasiyana siyana, chimwe nechimwe chinoita basa rakakosha mune dzakasiyana mashandisirwo.
1. Hydration uye kuzvimba
HPMC iri hydrophilic, zvichireva kuti inowirirana nemamolekyudhi emvura kuburikidza neHydrogen kusungwa uye van der waals mauto. Kana ikasanganiswa muPowder mafomu, HPMC inotora mvura kubva kunharaunda yakakomberedzwa kana kupaza midhiya, inotungamira ku hydration uye kuzvimba kwemaketani emapolitani. Iyi nzira yekudyira inowedzera vhoriyamu yakagara neHPMC mukati me poda matrix, nekuwedzera mvura uye kuwedzera kuchengetwa kwemvura.
2. Film formation
HPMC inogona kuumba firimu rakatetepa, rinochinja-famba kana rakapararira mumvura uye rakaomeswa. Iyi firimu inoshanda sechipinganidzo, kudzivirira mvura mamorekuru kubva pakupukunyuka iyo poda matrix. Nekugadzira iyo hydrophilic network, iyo HPMC firimu inochengetedza unyoro mukati meupfu, nekukasira kugadzirisa mamiriro ekuchengetwa kwemvura. Izvi zvinonyanya kubatsira mukushandisa zvakadai sekudzorwa-kubudiswa mishonga yemishonga yemishonga kana kuti unyoro-hunyoro hwezvigadzirwa zvecommetic.
3.
MuPowder Kugadzirisa, HPMC inogona kushandiswa sechinhu chinobatanidza zvinhu zvekugadzirisa zvinhu zvemukati zvemunhu. Nekubatanidza powder zvidimbu zvine mutete zveHPMC solution, iyo pamusoro inowedzera hydrophilic, inofambisa adsorption yemamolekyudhi emvura. Izvi zvinoguma nekuwedzera mvura yekuchengetwa kwemvura seyakagadziriswa zvidimbu zvinobudirira musungo mumubhedha wepfuma.
4. Kusunga uye kuderedza
Mukuumbwa uko Powds vanoda kumanikidzwa kuita mahwendefa kana granules, hpmc inoshanda seyakawisirwa, ichikurudzira kuderedza pakati pezvikamu. Munguva yekumanikidza, HPMC hydrate uye inoumba viscous gel iyo inosungira iyo poda mapato zvikamu pamwechete. Ichi chiitiko chinosungira chisingavhenekesa chemuchina simba rechigadzirwa chekupedzisira asi zvakare vanowedzera kudzokorora kwemvura nekudzora porosity yeiyo misa yakadzvanywa, nekudaro kuderedza kurasikirwa kwemvura kuburikidza neCapillary chiito.
5. Rheological smigadziriso
HPMC inopa pseudoplastic kana yekutsvaira-kuonda maitiro kumhinduro mhinduro, zvichireva zvavakatarisa zvinodzikira pasi pekushushikana. MuPowder mafomu, izvi zvivakwa zvivakwa zvinopesvedzera maitiro ekuyerera uye kubata hunhu hwezvinyorwa. Nekuderedza iyo vhiza yeKutambanudza, HPMC inofambisa iri nyore kusanganisa uye yunifomu yekugoverwa mukati mehomwe inosanganisa, ichitungamira kuyamwisa hydration uye yekuchengetedzeka kwemvura.
6. Kuumbwa kweGel
Kana HPMC hydrate pamberi pemvura, inogadzirisa gelige, inogadzira matatu-dimensional network chimiro. Iyi gel network inopa mamalecules yemvura, ichigadzira reservoir yemanyoro mukati me poda matrix. Kukura kweiyo gel kuumbwa kunoenderana nezvinhu zvakadai seHPMC kusimba, zvinyoro-nyoro uremu, uye tembiricha. Nekudzora iyi paramita, mafuro anogona kugadzirisa iyo gel simba uye kumvura kuchengetedza kugona kukodzera chaiyo application zvinodiwa.
HPMC ine simba rakakosha pane iyo yekuchengetwa kwemvura yezvivakwa zve poder Nekusunga maitiro aya, mafomu anogadzira gadziriso yehupfumi ehupfumi hwekushandisa zvakasiyana-siyana, kubva pamishonga yemishonga yemishonga nemakapuru uye zvigadzirwa zvekuvaka uye zvigadzirwa zvekuchengetedza. Kunzwisisa basa reHPMC mukuchengetwa kwemvura kwakakosha kuti uwane zvavanoda kuita zvigadzirwa uye kushanda.
Kutumira Nguva: Kukadzi-18-2025