Cov khoom lag luam

Polyethylene Glycol 6000 Peg6000

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Khoom Nthuav dav

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Cov khoom lag luam

IMG20180320115916

Polyethylene glycol 6000 tau npaj los ntawm polymerization ntawm kua ethylene glycol ntawm qhov kub, ntsuas kub siab lossis qis qis.
Polyethylene glycol 6000 (PEG-6000) Lus Askiv Lub Npe: macrogol 6000-992 cov khoom no yog sib xyaw ua ke ntawm ethylene oxide thiab dej polycondensation, cov qauv tshuaj molecular yog ho (CH2CH2O) NH, qhov twg n sawv cev rau nruab nrab ntawm oxygenvinyls.
cim
Cov khoom no yog cov dawb waxy khoom flake lossis hmoov hmoov, muaj tsw me ntsis tsw. Cov khoom yog soluble hauv dej los yog ethanol, tab sis insoluble hauv ether. Qhov khov ntawm qhov khoom no (Qhia Ntxiv VI d) yog 53 ~ 58 ℃. Viscosity noj 25.0g ntawm cov khoom no, muab tso rau hauv 100ml ntsuas lub raj mis, ntxiv cov dej kom yaj thiab dilute mus rau hauv qhov ntsuas, co zoo, siv cov Pinker viscometer nrog lub taub ntawm 1.0 hli los txiav txim raws li txoj cai (Cov Lus Qhia Ntxiv VI g txoj kev 1 )). Lub kinematic viscosity ntawm 40 ℃ yog 10.5-16.5 hli <2> / s.

Kev Nyab Xeeb
Nws muaj kev tsis haum xeeb rau daim tawv nqaij thiab qhov muag, thiab nyuaj rau qhov nqus tau txoj hnyuv tom qab kev tswj hwm ntawm qhov ncauj, thiab cov tshuaj lom muaj tsawg heev. Kev txhaj tshuaj ntawm 5% (huab hwm coj) aqueous kev daws ntawm polyethylene oxide rau hauv lub qhov muag ntawm luav tshwm sim tsuas yog hlawv me ntsis. PEO tau cuam tshuam txog qhov kev tuag ntawm ntses, roob ris, Anemone, cws lossis algae. Nws cov khoom hnyav thiab cov kua dej aqueous muaj cov tshuaj lom tsawg, thiab muaj kev nyab xeeb siv thiab lis. Tsoom Fwv Teb Chaws Asmeskas Khoom Noj thiab Tshuaj (FDA) tau pom zoo siv polyethylene oxide aqueous tov cob rau tshwj xeeb ntim khoom noj thiab npias ncaj qha ntxiv.

soj ntsuam
Qhov nruab nrab molecular phaus ntawm cov khoom no yog kwv yees li 12.5g, uas yog ntsuas kom hnyav. Tso nws rau hauv ib txheej 250ml conical hwj nrog nres, ntxiv 25ml pyridine, sov nws kom yaj nws, thiab txias rau nws. Raws li cov txheej txheem ntawm polyethylene glycol 400, pib los ntawm "pyridine tov ntxiv nrog phthalic anhydride muaj tseeb", qhov nruab nrab cev hnyav yuav tsum yog 5400-7800. Cov kua qaub (acidity), qhov meej meej thiab cov xim ntawm cov kev daws teeb meem, thiab qhov seem ntawm qhov kev tsis quav ntsej yuav raug kuaj xyuas raws li txoj hauv kev qhia hauv polyethylene glycol 400.

Kev ntsuas kev ntsuas

Cov Lus Qhia Tshwj Xeeb

Tsos (25))

Colorandlustre

Pt-Paib

Hydroxylvalue

mgKOH / g

Molecular phaus

Qhov ua kom pom tseeb ℃

Cov ntsiab lus dej (%)

PH tus nqi

1% Kev daws teeb meem que

PEG-6000

Milky Dawb khoom

20

17.5 ~ 20

5500 ~ 7000

54 ~ 60

≤0.5

5.0 ~ 7.0

Ceeb toom: peb lub tuam txhab tseem muab ntau hom PEG series cov khoom.


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