CMC feem ntau yog anionic polymer compound npaj txhij los ntawm kev rov ua kom muaj cov pa qaub motustic alkali thiab monochloroacetic acid, nrog molecular hnyav ntawm 6400 (± 1 000). Lub ntsiab ntawm-cov khoom yog sodium chloride thiab sodium glycolate. CMC Belongs rau kev hloov kho cellulose ntuj hloov kho. Nws tau raug hu raug hu ua "cellulose" los ntawm cov zaub mov thiab lub koom haum ua liaj ua teb ntawm United Nations (FAO) thiab Lub Koom Haum Ntiaj Teb Kev Noj Qab Haus Huv (tus).
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Cov ntsuas tseem ceeb los ntsuas qhov zoo ntawm CMC yog cov qib hloov pauv (DS) thiab purity. Feem ntau, cov khoom ntawm CMC muaj sib txawv thaum DS txawv; Qhov siab dua qib ntawm kev hloov pauv, zoo dua qub solubility, thiab qhov zoo dua lub pob tshab thiab kev ruaj khov ntawm kev daws. Raws li cov lus tshaj tawm, cov pob tshab ntawm CMC zoo dua thaum cov qib hloov pauv yog 0.7-1.2 loj tshaj plaws thaum tus nqi py yog 6-9. Txhawm rau kom nws zoo, ntxiv rau kev xaiv ntawm kev sib raug zoo ntawm alkali, qee yam uas muaj kev sib raug zoo ntawm Alkali, qee lub sijhawm, lub sijhawm dej, qhov system , P muaj nuj nqis, kev daws teeb meem thiab ntsev.
Kev tsom xam ntawm qhov zoo thiab qhov tsis zoo ntawm sodium carboxymethyl cellulose
Kev txhim kho ntawm cov sodium carboxymethyl cellulose yog tseeb tsis tau ua. Tshwj xeeb tshaj yog nyob rau hauv xyoo tsis ntev los no, kev nthuav dav ntawm cov ntawv thov thiab txo cov nqi tsim khoom tau ua qhov tsim cov carboxymethyl cellulose ntau thiab nrov dua. Cov khoom ntawm kev muag khoom yog sib xyaw.
Tom qab ntawd, yuav ua li cas txiav txim siab qhov zoo ntawm cov sodium carboxymethyl cellulose, peb tshawb xyuas los ntawm qee qhov kev xav txog lub cev thiab tshuaj lom neeg:
Ua ntej tshaj plaws, nws tuaj yeem txawv ntawm nws cov pa kub. Cov dav hlau dav dav ntawm sodium carboxymethyl cellulose yog 280-300 ° Cellulose ua ntej qhov kub no tau mus txog, tom qab ntawv no muaj teeb meem teeb meem. (Feem ntau cov pa roj carbonancy siv muffle cua sov)
Thib ob, nws yog qhov txawv los ntawm nws cov ntsiab lus kub. Feem ntau, sodium carboxymethyl cellulose yuav hloov xim thaum nws mus txog ib qho kub. Qhov ntsuas kub yog 190-200 ° C.
Thib peb, nws tuaj yeem txheeb tau los ntawm nws cov tsos. Cov tsos ntawm feem ntau cov khoom yog cov hmoov dawb, thiab nws cov particle loj yog feem ntau 100 mesh, thiab qhov tshwm sim ntawm kev hla dhau yog 98.5%.
Sodium Carboxymethyl cellulose yog cov khoom siv cellulose cellulose ntau thiab muaj ntau cov ntawv thov, yog li tej zaum muaj qee yam kev cuam tshuam ntawm kev ua lag luam. Yog li yuav txheeb xyuas seb nws puas yog cov khoom lag luam uas xav tau los ntawm cov neeg siv tau dhau cov kev xeem ntawv hauv qab no.
Xaiv 0.5g ntawm sodium carboxymethyl cellulose, uas tsis paub meej tias nws yog ib qho me me txhua lub sijhawm, do me me txhua lub sijhawm, thiab cua sov li 20 feeb rau Ua ib qho kev daws teeb meem, txias tom qab kuaj cov kua kom tau, cov kev ntsuas hauv qab no tau ua tiav.
1. Ntxiv rau dej rau qhov kev sim tshuaj kom dilute 5 zaug, ntxiv 0.5ml ntawm nws, thiab ua kom sov nws hauv dej da dej li 10 feeb los tshwm rau liab-liab doog.
2. Ntxiv 10 ml
3. Ntxiv 1ml ntawm Ketone Sulfate sim daws rau 5mL ntawm kev ntsuas kev ntsuas, sib tov thiab co los tsim lub teeb xiav flocculent nag daus.
4. Cov khoom seem tau txais los ntawm ashing ntawm cov khoom no qhia cov tshuaj tiv thaiv ntawm sodium ntsev, uas yog, sodium carboxymethyl cellulose.
Los ntawm cov kauj ruam no, koj tuaj yeem txheeb xyuas seb cov khoom yuav yog sodium carboxymethyl cellulose thiab nws txoj kev ua kom yooj yim thiab cov tswv yim rau cov khoom raug
Lub Sijhawm Post: Nov-12-2022