HPMC, kana Hydroxypropyl Methylcellulose, i polymer yekugadzira inoshandiswa zvakanyanya mumishonga, chikafu, cosmetic neminda yekuvaka. Iyo ine akawanda akanakisa zvimiro sesolubility, kugadzikana, pachena uye firimu-kugadzira zvimiro semukobvu, anonamira, firimu rekare, kumisa mumiriri uye inodzivirira colloid.
Nezve viscosity yeHPMC, ipfungwa yakaoma kunzwisisa nekuti viscosity inobatwa nezvinhu zvakawanda, senge concentration, molecular weight, solvent, tembiricha uye shear rate.
Hukama pakati pehuremu hwemamorekuru uye viscosity: Huremu hwemamorekuru hweHPMC ndechimwe chezvinhu zvakakosha zvinotaridza viscosity yayo. Kazhinji kutaura, kukwira kwema molecular huremu, ndiko kukwira kwe viscosity yeHPMC. Naizvozvo, vagadziri vanowanzopa zvigadzirwa zveHPMC zvine uremu hwakasiyana hwemamorekuru kusangana nezvinodiwa zvemaindasitiri akasiyana. Huremu hwemamorekuru hunowanzo kuratidzwa seK kukosha (seK100, K200, nezvimwewo). Iyo yakakura iyo K kukosha, iyo yakakwirira viscosity.
Mhedzisiro yekuisa pfungwa: Iyo viscosity yeHPMC mhinduro mumvura inowedzera nekuwedzera kwekunzwa. Semuyenzaniso, 1% yekumisikidzwa kweHPMC mhinduro inogona kunge iine viscosity yakapetwa kakati wandei kupfuura iyo ye0.5% yekumisikidza mhinduro. Izvi zvinobvumira iyo viscosity yemhinduro kudzorwa nekugadzirisa kusungwa kweHPMC mukushandisa.
Mhedzisiro yezvinonyungudutsa: HPMC inogona kunyungudika mumvura kana organic zvinonyungudutsa, asi zvakasiyana zvinonyungudutsa zvinokanganisa viscosity yayo. Kazhinji, HPMC ine yakanaka solubility mumvura uye mhinduro viscosity yakakwira, nepo viscosity muorganic solvents inosiyana zvichienderana nepolar yezvinonyungudutsa uye dhigirii rekutsiva HPMC.
Mhedzisiro yekushisa: Iyo viscosity yeHPMC mhinduro inoshanduka nekushisa. Kazhinji, viscosity yeHPMC mhinduro inodzikira kana tembiricha yawedzera. Izvi zvinodaro nekuti kuwedzera kwekushisa kunotungamirira kukurumidza kufamba kwema molecular uye kuwedzera fluidity yemhinduro, iyo inoderedza viscosity.
Mhedzisiro yeshear rate: HPMC mhinduro isiri yeNewtonian fluid, uye viscosity yayo inoshanduka neshear rate. Izvi zvinoreva kuti panguva yekukurudzira kana kupomba, viscosity inoshanduka nekusimba kwekushanda. Kazhinji, HPMC mhinduro inoratidza shear kuonda maitiro, ndiko kuti, viscosity inodzikira pakakwirira shear mitengo.
HPMC mamakisi uye zvakatemwa: Akasiyana mamakisi ezvigadzirwa zveHPMC anewo misiyano yakakura muviscosity. Semuyenzaniso, yakaderera viscosity giredhi HPMC chigadzirwa anogona kuva viscosity 20-100 mPas pa 2% concentration, nepo high viscosity giredhi HPMC chigadzirwa anogona kuva viscosity anosvika 10,000-200,000 mPas panguva yakafanana concentration. Naizvozvo, kana uchisarudza HPMC, zvakakosha kuti usarudze iyo yakakodzera viscosity giredhi zvichibva pane chaiyo application zvinodiwa.
Yakajairwa bvunzo nzira: Iyo viscosity yeHPMC inowanzo kuyerwa ne viscometer kana rheometer. Nzira dzakajairika dzekuyedza dzinosanganisira kutenderera viscometer uye capillary viscometer. Mamiriro ekuyedza akadai setembiricha, kutarisisa, rudzi rwe solvent, nezvimwe zvinogona kuve nemhedzisiro yakakosha pamhedzisiro, saka aya ma paramita anofanirwa kudzorwa zvakanyanya panguva yekuyedzwa.
Iyo viscosity yeHPMC yakaoma paramende inobatwa nezvakawanda zvinhu, uye kugadzirisa kwayo kunoita kuti ishandiswe zvakanyanya mukushandisa kwakasiyana. Zvingave mune zvekudya, zvemishonga, zvekuvaka kana maindasitiri ezvizoro, kunzwisisa uye kudzora viscosity yeHPMC ndechimwe chezvinhu zvakakosha kuve nechokwadi chemhando yechigadzirwa uye kuita.
Nguva yekutumira: Aug-28-2024