Mayeso a Cellulose Ether Viscosity Test

The mamasukidwe akayendedwe ama cellulose ethers, monga Hydroxypropyl Methylcellulose (HPMC) kapena Carboxymethyl Cellulose (CMC), ndi gawo lofunikira lomwe lingakhudze momwe amagwirira ntchito zosiyanasiyana. Viscosity ndi muyeso wa kukana kwa madzimadzi kuti asayende, ndipo imatha kutengera zinthu monga ndende, kutentha, ndi kuchuluka kwa m'malo mwa cellulose ether.

Nayi chiwongolero chonse cha momwe kuyezetsa kukhuthala kwa ma cellulose ether kungachitidwe:

Brookfield Viscometer Njira:

Brookfield viscometer ndi chida chodziwika bwino chomwe chimagwiritsidwa ntchito kuyeza kukhuthala kwamadzimadzi. Masitepe otsatirawa amapereka ndondomeko yoyambira yoyesera mamasukidwe akayendedwe:

1. Kukonzekera Zitsanzo:
   • Konzani ndende yodziwika bwino ya cellulose ether solution. Kukonzekera kosankhidwa kudzadalira zofunikira zenizeni za ntchitoyo.
2. Kulinganiza kwa Kutentha:
   • Onetsetsani kuti chitsanzocho chikufanana ndi kutentha komwe mukufuna. Viscosity ikhoza kudalira kutentha, kotero kuyesa pa kutentha koyendetsedwa n'kofunika kuti muyese molondola.
3. Kuwongolera:
   • Sinthani viscometer ya Brookfield pogwiritsa ntchito madzi oyezera kuti mutsimikizire kuwerengedwa kolondola.
4. Kutsegula Chitsanzo:
   • Kwezani njira yokwanira ya cellulose ether muchipinda cha viscometer.
5. Kusankhidwa kwa Spindle:
   • Sankhani spindle yoyenera kutengera mtundu wa viscosity womwe ukuyembekezeka wa chitsanzo. Ma spindles osiyanasiyana amapezeka pamitundu yotsika, yapakatikati, komanso ma viscosity apamwamba.
6. Muyeso:
   • Mizereni spindle mu chitsanzo, ndikuyamba viscometer. Spindle imazungulira pa liwiro lokhazikika, ndipo kukana kwa kuzungulira kumayesedwa.
7. Zojambulira:
   • Lembani kuwerengera kwa mamasukidwe a viscosity kuchokera pa chiwonetsero cha viscometer. Muyezo woyezera nthawi zambiri umakhala centipoise (cP) kapena millipascal-sekondi (mPa·s).
8. Bwerezani Miyeso:
   • Chitani miyeso ingapo kuti mutsimikizire kuberekana. Ngati mamasukidwe akayendedwe amasiyanasiyana ndi nthawi, miyeso yowonjezera ingafunike.
9. Kusanthula Zambiri:
   • Yang'anani deta ya viscosity potengera zofunikira zogwiritsira ntchito. Ntchito zosiyanasiyana zimatha kukhala ndi zolinga za viscosity.

Zomwe Zimakhudza Kukhuthala:

1. Kuyikira Kwambiri:
   • Kuchulukirachulukira kwa mayankho a cellulose ether nthawi zambiri kumabweretsa ma viscosity apamwamba.
2. Kutentha:
   • Viscosity imatha kukhala yosamva kutentha. Kutentha kwapamwamba kumatha kuchepetsa kukhuthala.
3. Digiri ya Kusintha:
   • Kuchuluka kwa m'malo mwa cellulose ether kumatha kukhudza kukhuthala kwake, motero, kukhuthala kwake.
4. Mtengo wa shear:
   • Viscosity imatha kusiyanasiyana ndi kumeta ubweya wa ubweya, ndipo ma viscometer osiyanasiyana amatha kugwira ntchito pamitengo yosiyana.

Nthawi zonse tsatirani malangizo enieni operekedwa ndi wopanga cellulose ether pofuna kuyesa mamasukidwe akayendedwe, chifukwa njira zimatha kusiyanasiyana kutengera mtundu wa cellulose ether komanso momwe amagwirira ntchito.