Hydroxypropyl methyl cellulose, koj puas paub?

1.HPMCmuab faib ua hom instant thiab ceev dispersion hom.

HPMC ceev dispersion hom yog suffixed nrog tsab ntawv S, thiab glyoxal yuav tsum tau ntxiv thaum lub sij hawm ntau lawm txheej txheem.

HPMC hom instant tsis ntxiv cov ntawv, xws li "100000" txhais tau tias "100000 viscosity.

2. Nrog lossis tsis muaj S, cov yam ntxwv sib txawv

HPMC dispersing sai sai sai thaum nws ntsib dej txias thiab ploj mus rau hauv dej. Lub sijhawm no, cov kua dej tsis muaj viscosity, vim tias HPMC tsuas yog tawg mus rau hauv dej yam tsis muaj kev sib cais tiag tiag. Tom qab li ob feeb, cov viscosity ntawm cov kua maj mam nce, tsim ib pob tshab viscous Thick colloid.

Instant HPMC tuaj yeem tawg sai sai hauv dej kub ntawm li 70 ° C. Thaum qhov kub thiab txias poob rau qee qhov kub, qhov viscosity yuav tshwm sim maj mam kom txog thaum lub pob tshab viscous colloid tsim.

3.Nrog lossis tsis muaj S, lub hom phiaj sib txawv

Instant HPMC tsuas yog siv tau rau hauv cov hmoov putty thiab mortar. Hauv cov kua nplaum nplaum, cov xim pleev xim thiab cov khoom siv ntxuav, yuav muaj kev sib koom ua ke thiab siv tsis tau.

Dispersed sai heevHPMCmuaj ntau yam kev siv thiab tuaj yeem siv rau hauv cov hmoov putty, mortar, kua kua nplaum, xim, thiab cov khoom siv ntxhua khaub ncaws yam tsis muaj contraindications.

4.Dissolving txoj kev

4-1. Nqa cov dej kub uas xav tau, muab tso rau hauv lub thawv thiab kub kom siab tshaj 80 ° C, thiab maj mam ntxiv cov khoom no nyob rau hauv qeeb stirring. Cov cellulose ntab saum npoo dej thaum xub thawj, tab sis maj mam dispersed los ua ib qho slurry. Cov tshuaj tau txias thaum stirring.

4-2. Xwb, cua sov 1/3 los yog 2/3 ntawm cov dej kub kom siab tshaj 85 ° C, ntxiv cellulose kom tau ib tug dej kub slurry, ces ntxiv cov seem ntawm cov dej txias, stirring, thiab txias lub resulting sib tov.

4-3. Lub mesh ntawm cellulose yog qhov zoo, thiab nws tshwm sim raws li ib tug neeg me me nyob rau hauv cov hmoov sib tov sib xyaw, thiab nws yaj sai sai thaum nws ntsib dej los tsim cov viscosity xav tau.

4-4. Maj mam thiab sib npaug ntxiv cellulose nyob rau hauv chav tsev kub, thiab stirring kom txog thaum ib tug pob tshab tov yog tsim.

5.Dab tsi cuam tshuam rau cov dej tuav ntawm hydroxypropyl methyl cellulose?

5-1. Cellulose ether HPMC homogeneity

Cov tshuaj tiv thaiv HPMC, methoxyl thiab hydroxypropoxyl sib npaug sib npaug, thiab cov dej tuav tau siab.

5-2. Cellulose ether HPMC thermal gel kub

Qhov siab dua cov thermal gel, qhov siab dua cov dej tuav tus nqi; txwv tsis pub, qhov qis dua tus nqi tuav dej.

5-3. Cellulose Ether HPMC Viscosity

Thaum lub viscosity ntawm HPMC nce, cov dej tuav tus nqi kuj nce; Thaum lub viscosity nce mus txog ib theem, qhov nce hauv dej tuav tus nqi yuav maj mam.

6.Ntxiv tus nqi ntawm cellulose ether HPMC

Qhov ntau dua ntawm cellulose etherHPMCntxiv, qhov siab dua cov dej tuav tus nqi thiab qhov zoo dua cov dej tuav cov nyhuv.

Nyob rau hauv qhov ntau ntawm 0.25-0.6%, cov dej tuav tau nce sai nrog qhov nce ntawm qhov sib ntxiv; Thaum cov nyiaj ntxiv tau nce ntxiv, qhov kev nce ntxiv ntawm cov dej tuav tau qeeb qeeb.