Hydroxypropyl methylcellulose (HPMC)chinhu chinonyungudika nemvura polymer chinoshandiswa zvakanyanya mumishonga, kuvaka, chikafu, zvizorwa uye mamwe minda. Yayo viscosity pfuma inokosha parameter kuyera maitiro ayo rheological pasi pemamiriro akasiyana. Kunzwisisa iyo viscosity pfuma yeHPMC aqueous solution inotibatsira kunzwisisa zviri nani maitiro ayo uye basa mumashandisirwo akasiyana siyana.
1. Chimiro chemakemikari uye zvinhu zveHPMC
HPMC inowanikwa nekugadziriswa kwemakemikari echisikigo cellulose, inonyanya kuumbwa nehydroxypropylation uye methylation yemamorekuru e cellulose. Muchigadzirwa chemakemikari cheHPMC, kuiswa kwemethyl (-OCH₃) uye hydroxypropyl (-OCH₂CHOHCH₃) mapoka anoita kuti inyunguduke nemvura uye ine yakanaka viscosity kugadzirisa kugona. Iyo viscosity kuita kweiyo aqueous mhinduro pane akasiyana mazinga uye tembiricha inokanganiswa nezvinhu zvakawanda senge molecular uremu, dhigirii rekutsiva, kugadzirisa kugadzirisa, nezvimwe.
2. Ukama pakati pe viscosity uye kuisa pfungwa
Iyo viscosity yeAnxinCel®HPMC aqueous solution inowanzo wedzera nekuwedzera concentration. Izvi zvinodaro nekuti pamatunhu akakwirira, kudyidzana pakati pemamorekuru kunowedzerwa, zvichikonzera kuwedzera kuyerera kwekuramba. Nekudaro, iyo solubility uye viscosity maitiro eHPMC mumvura anokanganisawo nehuremu hwemamorekuru. HPMC ine huremu hwemamorekuru hwepamusoro kazhinji inotaridza viscosity yepamusoro, nepo huremu hwakaderera hwemamorekuru hushoma.
Pakudzika kwakadzika: HPMC mhinduro inoratidza yakaderera viscosity pakudzika kwakadzika (senge pazasi 0.5%). Panguva ino, kudyidzana pakati pemamorekuru hakuna simba uye fluidity yakanaka. Inowanzo shandiswa mumashandisirwo akadai semajasi uye zvinodhaka zvinoburitswa.
Pakukwirisa kwakanyanya: Pakukwirisa kwakanyanya (senge 2% kana kupfuura), viscosity yeHPMC aqueous solution inowedzera zvakanyanya, ichiratidza zvimiro zvakafanana necolloidal solution. Panguva ino, fluidity yemhinduro iri pasi pekupikisa kukuru.
3. Ukama pakati pe viscosity uye tembiricha
Iyo viscosity yeHPMC aqueous solution inonzwa zvakanyanya kune tembiricha. Sezvo tembiricha inowedzera, kufamba pakati pemamorekuru emvura kunowedzera, uye kudyidzana pakati peHPMC mamorekuru kunova kushoma, zvichikonzera kuderera kweviscosity. Hunhu uhu hunoita kuti kushandiswa kweHPMC patembiricha dzakasiyana kuratidze kurongeka kwakasimba. Semuenzaniso, pasi pemamiriro ekupisa kwepamusoro, viscosity yeHPMC inowanzodzikira, iyo inonyanya kukosha mukugadzirwa kwemishonga, kunyanya mumishonga yakaramba ichibudiswa mafomu ekuenzanisa, apo kuchinja kwekushisa kunogona kukanganisa kugadzikana uye mhedzisiro yemhinduro.
4. Mhedzisiro yepH paViscosity
Iyo viscosity yeHPMC aqueous solution inogonawo kukanganiswa ne pH kukosha kwemhinduro. Kunyangwe HPMC isiri-ionic chinhu, iyo hydrophilicity uye viscosity zvimiro zvinonyanya kukanganiswa neiyo molecular chimiro uye mhinduro nharaunda. Nekudaro, pasi peyakanyanya acidic kana alkaline mamiriro, iyo solubility uye molecular chimiro cheHPMC inogona kuchinja, nekudaro ichikanganisa viscosity. Semuenzaniso, pasi pemamiriro ane acidic, kunyungudika kweHPMC kunogona kuderedzwa zvishoma, zvichiita kuti kuwedzera viscosity; nepo pasi pemamiriro ealkaline, iyo hydrolysis yeimwe HPMC inogona kuita kuti huremu hwayo huderere, nekudaro ichideredza viscosity yayo.
5. Molecular Weight uye Viscosity
Molecular huremu ndechimwe chezvinhu zvakakosha zvinokanganisa viscosity yeHPMC aqueous solution. Huremu hwemamorekuru hunowedzera kubatwa uye kuyambuka-kubatanidza pakati pemamorekuru, zvichikonzera kuwedzera viscosity. Yakaderera molecular uremu AnxinCel®HPMC ine zviri nani solubility mumvura uye yakaderera viscosity. Zvakasiyana zvinodiwa zvekushandisa zvinowanzoda kusarudzwa kweHPMC ine uremu hwakasiyana hwemamorekuru. Semuyenzaniso, mune coatings uye adhesives, yakakwirira molecular uremu HPMC kazhinji kusarudzwa nani adhesion uye fluidity; panguva yekugadzirira kwemishonga, yakaderera molecular uremu HPMC inogona kushandiswa kudzora kuburitswa kwezvinodhaka.
6. Ukama pakati peshear rate uye viscosity
Iyo viscosity yeHPMC aqueous solution inowanzochinja neshear rate, ichiratidza hunhu hwepseudoplastic rheological. Pseudoplastic fluid imvura ine viscosity inoderera zvishoma nezvishoma nekuwedzera kweshear rate. Hunhu uhwu hunogonesa HPMC mhinduro kuchengetedza yakakwira viscosity payakaderera shear rate kana yaiswa, uye kuwedzera fluidity pakakwirira shear rate. Semuenzaniso, muindasitiri yekupfeka, HPMC mhinduro inowanzoda kuratidza yakakwira viscosity pane yakaderera shear mwero kana ichiiswa kuti ive nechokwadi chekunamatira uye kuenzana kwejasi, nepo panguva yekuvaka, zvinodikanwa kuwedzera shear rate kuti iwedzere kuyerera.
7. Kushandisa uye viscosity maitiro eHPMC
Iyo viscosity maitiro eHPMCita kuti ishandiswe zvakanyanya mundima dzakawanda. Semuenzaniso, muindasitiri yemishonga, HPMC inowanzoshandiswa semushonga wakasimba-kusunungurwa, uye mutemo wayo we viscosity unoshandiswa kudzora kusunungurwa kwechirwere; muindasitiri yekuvaka, HPMC inoshandiswa seyakakora yekuvandudza kushanda uye fluidity yedhaka uye zvinonamira; muindasitiri yezvekudya, HPMC inogona kushandiswa seyakakora, emulsifier uye stabilizer kuvandudza kuravira uye kutaridzika kwechikafu.
Iyo viscosity maitiro eAnxinCel®HPMC aqueous solution ndiyo kiyi yekushandiswa kwayo munzvimbo dzakasiyana. Kunzwisisa hukama hwayo nezvinhu zvakaita sekutarisa, tembiricha, pH, uremu hwemamorekuru uye shear rate kwakakosha kwazvo pakugadzirisa kuita kwechigadzirwa uye kugadzirisa mashandisiro ekushandisa.
Nguva yekutumira: Jan-27-2025