Hydroxypropyl Methylcellulose HPMC E3, E5, E6, E15, E50, E4M

Hydroxypropyl Methylcellulose (HPMC) yog ib qho cellulose ether uas muaj ntau qib, qhia los ntawm cov tsiaj ntawv thiab cov lej. Cov qhab nia no sawv cev rau ntau qhov tshwj xeeb, suav nrog kev hloov pauv hauv qhov hnyav molecular, cov ntsiab lus hydroxypropyl, thiab viscosity. Nov yog qhov kev faib tawm ntawm HPMC qib koj tau hais:

1. HPMC E3:
   • Qib no yuav yog hais txog HPMC uas muaj viscosity 2.4-3.6CPS. Tus naj npawb 3 qhia qhov viscosity ntawm 2% aqueous tov, thiab cov lej siab dua feem ntau qhia tias muaj viscosity ntau dua.
2. HPMC E5:
   • Zoo ib yam li E3, HPMC E5 sawv cev rau qib viscosity sib txawv. Tus lej 5 qhia txog kwv yees li viscosity 4.0-6.0 CPS ntawm 2% aqueous tov.
3. HPMC E6:
   • HPMC E6 yog lwm qib nrog qhov sib txawv viscosity profile. Tus lej 6 qhia qhov viscosity 4.8-7.2 CPS ntawm 2% kev daws.
4. HPMC E15:
   • HPMC E15 yuav sawv cev rau qib viscosity siab dua piv rau E3, E5, lossis E6. Tus naj npawb 15 qhia qhov viscosity 12.0-18.0CPS ntawm 2% aqueous tov, qhia txog qhov sib xws.
5. HPMC E50:
   • HPMC E50 qhia txog qib viscosity siab dua, nrog tus lej 50 sawv cev rau viscosity 40.0-60.0 CPS ntawm 2% kev daws teeb meem. Qib no yuav muaj qhov viscosity ntau dua piv rau E3, E5, E6, lossis E15.
6. HPMC E4m:
   • Qhov "m" hauv E4m feem ntau qhia txog nruab nrab viscosity 3200-4800CPS. HPMC E4m sawv cev rau qib kawm nrog qib qis viscosity. Nws tuaj yeem tsim nyog rau cov ntawv thov uas xav tau qhov sib npaug ntawm fluidity thiab thickness.

Thaum xaiv HPMC qib rau ib daim ntawv thov tshwj xeeb, kev txiav txim siab suav nrog qhov xav tau viscosity, solubility, thiab lwm yam kev ua tau zoo. HPMC feem ntau siv hauv kev lag luam xws li kev tsim kho, tshuaj, tshuaj pleev ib ce, thiab khoom noj.

Hauv cov khoom noj, HPMC feem ntau yog siv los ua ib qho ntxiv hauv cov khoom siv mis nyuj uas tsis yog siv los txhim kho cov khoom zoo li dej tuav, kev ua haujlwm, thiab adhesion. Hauv cov tshuaj thiab tshuaj pleev ib ce, HPMC yog siv rau nws cov yeeb yaj kiab-tsim thiab thickening zog.

Nws yog ib qho tseem ceeb uas yuav tau sab laj nrog cov chaw tsim khoom lossis tus neeg muag khoom kom tau txais cov ntaub ntawv ntxaws ntxaws, suav nrog cov lus qhia tshwj xeeb thiab cov ntawv pom zoo rau txhua qib HPMC. Cov neeg tsim khoom feem ntau muab cov ntaub ntawv cov ntaub ntawv thiab cov ntaub ntawv khoom siv los qhia cov neeg siv xaiv cov qib uas tsim nyog tshaj plaws rau lawv cov kev xav tau tshwj xeeb.