HPMC (hydroxypruppyl methylcellose) inzvimbo yemvura ine mvura inoumbwa yakawedzera kushandiswa mumishonga yemishonga, chikafu, kuvaka, zvidhori uye mamwe maindasitiri. HPMC ndeye semi-synthetic mheremalose inobviswa yakawanikwa nemakemikari kugadziridzwa kwemasikirwo emusangano, uye inowanzo shandiswa seyechienda, stabilizer, emulsifier uye inonamatira.
Zvivakwa zvemuviri zveHPMC
Iyo yekunyungudutsa poindi yeHPMC inonyanya kuomarara nekuti nzvimbo yayo yekunyungudika haina kuoneka seiyo yemidziyo yakajairika crystalline. Pfungwa yayo yekunyungudika inokanganiswa nemanyorerwo uye suremu uye degree rekutsiva kwehydroxyprupyl uye methyl mapoka, saka zvinogona kusiyana zvinoenderana neiyo hpmc chigadzirwa. Kazhinji, sePoluble-Soluble Polymer, HPMC haina nzvimbo yakajeka uye yunifomu yekunyungudika, asi soffans uye inogadzirisa mukati meimwe tembiricha yekupisa.
Kunyungudika Pfungwa Range
Maitiro ekupisa ekushushikana emawere Kubva kumabhuku, inogona kuwanikwa kuti inonyungudika poindi yeHPMC iri pakati pe200°C uye 300°C, asi iyi mhando haina kumiririra iyo chaiyo yekunyungudza pfungwa yezvinhu zvese zveHPMC zvigadzirwa. Mhando dzakasiyana dzeHPMC Zvigadzirwa zvinogona kuve nemhando dzakasiyana dzekunyungudika uye kugadzikana kwekunyungudika nekuda kwezvinhu zvakaita sehuremu hwemanyoreri (degree rekutsiva), degree re hydroxypruslation (degree rekutsiva).
Yakaderera molecular uremu hpmc: kazhinji inonyungudika kana kuti inonyungudika pakudziya tembiricha, uye inogona kutanga pyronyze kana kunyungudika panguva dzakatenderedza 200°C.
Yakakwira Molecular uremu HPMC: HPMC Polymers ine huremu hwepamusoro ingangoda kupisa kumusoro kuti inyunguzane kana kupfava nekuda kwekurara kwemafuta, uye kazhinji tanga pyronyze uye kunyungudika pakati pe250°C uye 300°C.
Zvinhu zvinokanganisa nzvimbo yekunyungudika yeHPMC
Sollear uremu: uremu hwehurume hweHPMC zvine simba rakakura pane yayo yekunyungudika. Yakadzika molecular uremu kazhinji inoreva kudzikisira kudziya kwekunyungudza, nepo yakakura molecular huremu inogona kutungamira kune yakakwira yekunyungudika.
Dare rekutsiva Kazhinji, dhigirii yepamusoro yekutsiva inowedzera iyo solubility yeHPMC uye inoderedza nzvimbo yayo yekunyungudika.
Zvinyorwa zvekunyorovedzera: Sechinyorwa chakanyungudutswa nemvura, iyo yekunyungudika yeHPMC inokanganiswawo nezvinonyoroverwa. HPMC ine yakakwira manyoro zvemukati zvinogona kuvezwa hydration kana kupaza kupaza, zvichikonzera shanduko mumakwikwi ekupisa kwechidhori.
Kugadzikana kwekutonga uye kupisa kwechidhori kweHPMC
Kunyangwe HPMC isina nzvimbo yakasimba yekunyungudika, kugadzikana kwayo kunogadziriswa ndeye kiyi performance chiratidzo. Sekureva kwaTirmogravimetric kuongorora (tga) data, HPMC inowanzo tanga kuora mukudziya mune tembiricha ye250°C kusvika 300°C. Iyo chaiyo yekushongedza tembiricha inotsemuka pamusoro peiyo molecular uremu, degree rekutsiva uye zvimwe zvemuviri uye zvemakemikari zvivakwa zveHPMC.
Kurapwa kwemarapi muHPMC application
Mukushandisa, iyo yekunyungudika poindi uye yekudzikisira kugadzikana kweHPMC yakanyanya kukosha. Semuenzaniso, muindasitiri yechechi, HPMC inowanzoshandiswa seyakagadzirwa nemakapu, mafirimu efirimu, uye vatakuri vezvinodhaka zvinosunungurwa. Mune izvi zvekushandisa, kugadzikana kweHPMC kunoda kusangana nezvinodiwa zvekutadza kwekutadza
Mundima yekuvaka, kusagadzikana®hpmc inowanzoshandiswa seanoshandiswa sedhickener mune yakaoma mota, majasi uye anomisheni. Mune izvi zvekushandisa, iyo inogadziriswa yeHPMC zvakare inoda kuve mukati meimwe huwandu kuve nechokwadi kuti hazviratidzi panguva yekuvaka.
Hpc, Sechinyorwa chePolymer, haina poindi yakatarwa yekunyungudika, asi inoratidza kupfava uye pyrolysis hunhu mukati meimwe tembiricha yekupisa. Yayo inonyungudika point renji kazhinji iri pakati pe200°C uye 300°C, uye chaiyo yekunyungudika inonyungudika zvinoenderana nezvinhu zvakaita sehuremu hwemanyorerwe, degree re hydroxyprirtilation, degree remagetsi, uye zvinyoro-nyoro zveHPMC. Mune zviitiko zvakasiyana zvekushandisa
Kutumira Nguva: Jan-04-2025