Yuav ua li cas thiaj kuaj tau cov ntoo tshauv ntawm hydroxypropyyl methylulose?

Cov hmoov tshauv yog qhov taw qhia tseem ceeb ntawmHydroxyPropyyl MethylcelluloseCov. Ntau tus neeg muas zaub feem ntau nug thaum lawv nkag siab hydroxypropylenchylulose: tus nqi tshauv yog dab tsi? HydroxyPropyyl methylcellulose nrog ib cov hmoov tshauv me me txhais tau tias muaj kev coj dawb huv ntau dua; Cellulose nrog lub loj tshauv cov ntsiab lus txhais tau tias muaj ntau cov impurities nyob rau hauv nws, uas yuav cuam tshuam rau kev siv cuam tshuam lossis nce tus nqi ntxiv. Thaum cov neeg muas zaub xaiv hydroxypropy, lawv feem ntau pom ib co cellulose nrog hluav taws kub thiab hlawv nws los sim cov hmoov tshauv ntawm cellulose. Tab sis txoj kev kuaj pom no yog qhov tsis zoo heev, vim tias muaj ntau lub tuam ntxhab ntxiv cov kev sib txuas ua ke rau lub cellulose. Nyob rau saum npoo, cellulose muaj tshauv me me tom qab hlawv, tab sis hauv kev coj ua, dej rov qab ntawm hydroxypropylulose tsis zoo heev.

Yog li peb yuav tsum ua kom pom cov ntoo tshauv cov ntsiab lus ntawm hydroxypropyyl methylulose? Qhov tseeb nrhiav cov qauv yog kom siv lub muffle cua sov los ntes.

Ntsuas kev ntsuas kev sib npaug, kev kub siab qog sov kom sov sov, hluav taws xob cua sov.

Cov txheej txheem sim:

1) Ua ntej, tso 30ml porcelin crucible nyob rau hauv lub high-kub ua kom qis dua nyob rau hauv (500) ° (500) °

2) hnyav 1.0 g ntawmHydroxyPropyyl MethylcelluloseNtawm ib qho kev ntsuas pom kev sib npaug, muab cov khoom hnyav tso rau hauv cov qauv crucible, tom qab ntawd tso cov qauv hluav taws xob rau cov pa hluav taws xob, txias rau cov tshuab hluav taws xob, thiab muab tso rau ntawm lub cub hluav taws xob kom tiav. Tom qab ntawd txav mus rau qhov kev kub siab muffle rauv taws ua kom sov, thaum lub zog cua sov ua kom sov li 200 ℃

Xam cov kev nyob ntawm cov chaw nyob yog suav raws li cov mis (3):

M2-M1

The Igitionpition Retidue (%) = × 100 ....................... (3)

m

Hauv cov qauv: M1 - qhov loj ntawm qhov khoob ntoo, hauv g;

M2 - Pawg ntawm cov seem thiab Crucible, hauv g;

m - Qhov loj ntawm tus qauv, hauv g.