Yuav ua li cas txheeb xyuas cov hmoov tshauv ntawm Hydroxypropyl Methylcellulose (HPMC)?

Kev tshuaj xyuas cov hmoov tshauv ntawm Hydroxypropyl Methylcellulose (HPMC) suav nrog kev txiav txim siab feem pua ​​​​ntawm inorganic residue sab laug tom qab cov organic Cheebtsam tau incinerated. Nov yog cov txheej txheem dav dav rau kev kuaj cov hmoov tshauv rau HPMC:

Cov ntaub ntawv xav tau:

1. Hydroxypropyl Methylcellulose (HPMC) qauv
2. Muffle furnace los yog ashing furnace
3. Crucible thiab hau (ua los ntawm inert khoom xws li porcelain los yog quartz)
4. Desiccator
5. Kev ntsuas ntsuas
6. combustion nkoj (yeem)
7. Tongs los yog crucible tuav

Txheej txheem:

1. Qhov hnyav ntawm tus qauv:
   • Ntsuas qhov khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob.
   • Muab tus nqi ntawm HPMC tus qauv (feem ntau yog 1-5 grams) rau hauv lub crucible thiab sau qhov hnyav ntawm cov qauv thiab crucible (m2).
2. Txheej txheem ashing:
   • Muab lub crucible uas muaj cov qauv HPMC nyob rau hauv lub qhov cub muffle los yog ashing rauv.
   • Ua kom sov lub cub tawg maj mam mus rau qhov ntsuas kub (feem ntau 500-600 ° C) thiab tswj qhov kub no rau lub sijhawm teem tseg (feem ntau 2-4 teev).
   • Xyuas kom tiav combustion ntawm cov khoom siv organic, tawm hauv qab tsuas yog inorganic tshauv.
3. Cooling thiab hnyav:
   • Tom qab cov txheej txheem ashing tiav, tshem tawm cov crucible los ntawm lub qhov cub siv cov tongs los yog crucible tuav.
   • Muab lub crucible thiab nws cov ntsiab lus nyob rau hauv ib tug desiccator kom txias rau chav tsev kub.
   • Thaum txias, rov ua dua lub crucible thiab tshauv residue (m3).
4. Kev suav:
   • Xam cov hmoov tshauv ntawm cov qauv HPMC siv cov qauv hauv qab no: Cov ntsiab lus tshauv (%) = [(m3 - m1) / (m2 - m1)] * 100
5. Txhais lus:
   • Cov txiaj ntsig tau los sawv cev rau qhov feem pua ​​​​ntawm cov hmoov tshauv tsis muaj nyob hauv cov qauv HPMC tom qab combustion. Tus nqi no qhia txog qhov purity ntawm HPMC thiab tus nqi ntawm cov khoom seem inorganic tam sim no.
6. Qhia:
   • Tshaj tawm cov ntsiab lus tshauv nrog rau cov ntsiab lus tseem ceeb xws li cov xwm txheej sim, kev txheeb xyuas tus qauv, thiab cov qauv siv.

Nco tseg:

• Xyuas kom tseeb tias lub crucible thiab lub hau yog huv si thiab tsis muaj kab mob ua ntej siv.
• Siv lub tshuab hluav taws xob los yog lub tshuab hluav taws xob uas muaj peev xwm tswj tau qhov kub thiab txias kom ntseeg tau tias cov cua sov tsis sib xws thiab cov txiaj ntsig raug.
• Tuav lub crucible thiab nws cov ntsiab lus ua tib zoo kom tsis txhob poob ntawm cov khoom lossis kev sib kis.
• Ua cov txheej txheem ashing nyob rau hauv qhov chaw zoo-ventilated kom tsis txhob raug combustion by-products.

Los ntawm kev ua raws li cov txheej txheem no, koj tuaj yeem txiav txim siab cov ntsiab lus tshauv ntawm Hydroxypropyl Methylcellulose (HPMC) cov qauv thiab ntsuas lawv cov purity thiab zoo.