Ngatitaure nezve hydroxypropyl methyl cellulose HPMC uye maitiro ekuyera viscosity yayo.Iyo viscosity pano inoreva iyo inooneka viscosity, inova yakakosha kunongedzera kune hydroxypropyl methyl cellulose.
Standard.Iyo yakajairika nzira dzekuyera ndeyekutenderera viscosity kuyerwa, capillary viscosity kuyerwa uye kudonha kwema viscosity kuyerwa.Iyo yekutsunga nzira yehydroxypropyl methyl cellulose yaive capillary adhesion.
Iyo nzira yekugadzika dhigirii, uchishandisa iyo Uchs viscometer.Kazhinji kutsunga kwemhinduro ndeye 2% aqueous solution, fomula ndeiyi: V=Kdt.V ndiyo viscosity mu mpa.s uye K ndiyo viscometer inogara iripo.
D ndiyo density pakupisa nguva dzose uye T ndiyo nguva kubva kumusoro kusvika pasi kuburikidza ne viscometer mumasekonzi.Iyi nzira yekushanda inonyanya kuoma, kana pane isingagadziriswi.
Mashoko ari nyore kukonzera zvikanganiso, zvakaoma kuziva mhando yehydroxypropyl methyl cellulose.Iye zvino inowanzoshandiswa kuyera viscosity ye rotary viscometer, iyo inoshandiswa muChina.
Iyo formula yeNDJ-1 viscometer ndeye η=Kα.η ndiyo viscosity, zvakare mumpa.s, K ndiyo coefficient ye viscometer, uye α ndiyo kuverenga kwe viscometer pointer.
Hydroxypropyl methyl cellulose 2% viscosity yekuedza nzira:
1, nzira iyi yakakodzera kutariswa kweiyo dynamic viscosity yezvisiri-Newtonian zvinwiwa (polymer solution, suspension, emulsion dispersion liquid kana surfactant solution, nezvimwewo).
2. Zvishandiso nemidziyo
2.1 Rotary viscometer (NdJ-1 uye NDJ-4 inodiwa neChinese Pharmacopoeia)
2.2 Constant tembiricha yemvura yekugezesa inogara tembiricha kunyatsoita 0.10C
2.3 The tembiricha scoring degree i 0.20C, iyo nguva nenguva inosimbiswa.
2.4 Frequency mita Viscometers anoshandisa frequency kudzikamisa matanho (akadai seNDJ-1 uye NDJ-4) achachengetwa.Kururama kwe1%.A
8. Og sampuro yakayerwa nemazvo uye yakaiswa muome, toned 400mL refu beaker.Wedzera nezve 100mL ye80-90 dhigirii inopisa mvura uye simbisa kwe10min kuti iparadzanise.
Zvakafanana kuparadzira, kumutsa uye kuwedzera mvura inotonhora kusvika 400mL zvachose.Zvichakadaro, kurunga uchienderera mberi kwemaminetsi makumi matatu kugadzira 2% (W/W) mhinduro, woiisa mufiriji kuti kugeza nechando kutonhore kusvika yaita chando chitete pamusoro.
Bvisa kunze uye uise mutangi rinogara retembiricha kuchengetedza tembiricha yepakati kusvika 20 ℃ 0.1 ℃.
3.1 Kuiswa uye kushanda kwechiridzwa kuchaitwa zvinoenderana nemirairo yekushandisa yechiridzwa, uye iyo yakakodzera rotor uye rotor ichasarudzwa zvinoenderana neiyo viscosity renji yechigadzirwa chakaedzwa uye kupihwa kwepharmacopoeia pasi pechinyorwa cheiyo. chigadzirwa
Kutenderera kumhanya.
3.2 Gadzirisa tembiricha yenguva dzose tembiricha yemvura zvinoenderana nekutemerwa pasi pechinhu chimwe nechimwe chemushonga.
3.3 Chigadzirwa chekuyedza chakaiswa mumudziyo wakatsanangurwa nechiridzwa, uye deflection Angle (a) yakayerwa zvinoenderana nemutemo mushure memaminitsi makumi matatu ekugara tembiricha.Dzima mota uye woitangazve kuti usarudze zvakare
Musiyano pakati pezviyero zvinorehwa haufanire kudarika 3%, kana zvisina kudaro chiyero chechitatu chinofanira kuitwa.
3.4 Verenga kukosha kwezviyedzo zviviri zvinoenderana neformula kuti uwane inoshanduka viscosity yechigadzirwa chakaedzwa.
4. Rekodha uye uverenge
4.1 Rekodha iyo rotary viscometer modhi, nhamba yerotor uye kumhanya kwakashandiswa, viscometer yenguva dzose (K 'kukosha), kuyerwa tembiricha, uye kuyerwa kwega kwega.Value.
Iyo yekuverenga formula ye4.2
Dynamic viscosity (MPa”s)=Ka apo K ndiyo inoyera viscometer inogara ichiyerwa neyakajairwa mvura yeviscosity inozivikanwa uye A ndiyo inotsauka Engle
Nguva yekutumira: May-18-2022