Cov cim tseem ceeb los ntsuas qhov zoo ntawm CMC yog qhov kev hloov pauv (DS) thiab purity. Feem ntau, cov khoom ntawm CMC txawv thaum DS txawv; qhov siab dua qhov kev hloov pauv, qhov zoo dua qhov solubility, thiab qhov zoo dua qhov pom thiab ruaj khov ntawm cov tshuaj. Raws li cov lus ceeb toom, lub pob tshab ntawm CMC yog qhov zoo dua thaum qhov kev hloov pauv yog 0.7-1.2, thiab viscosity ntawm nws cov kua dej yog qhov loj tshaj plaws thaum pH tus nqi yog 6-9.
Txhawm rau kom ntseeg tau nws qhov zoo, ntxiv rau kev xaiv tus neeg sawv cev etherifying, qee yam uas cuam tshuam rau qib kev hloov pauv thiab purity yuav tsum tau txiav txim siab, xws li kev sib raug zoo ntawm alkali thiab etherifying tus neeg sawv cev, lub sijhawm etherification, cov ntsiab lus dej, qhov kub thiab txias. , pH tus nqi, kua concentration thiab ntsev.
Sodium carboxymethyl cellulose yog siv dav hauv roj av, khoom noj khoom haus, tshuaj, textile, papermaking thiab lwm yam lag luam, yog li nws yog ib qho tseem ceeb heev kom txiav txim siab nws cov purity, thiab nws kuj yog ib qho kev ntsuas los xyuas kom meej nws cov nyhuv siv, ces, peb yuav pom li cas, hnov, kov, thiab lick los txiav txim nws purity?
1. Sodium carboxymethyl cellulose nrog purity siab muaj cov dej tsis tshua muaj siab, zoo lub teeb xa mus, thiab nws cov dej tuav tus nqi siab li 97%.
2. Cov khoom uas muaj purity siab yuav tsis hnov tsw tsw ntawm ammonia, hmoov txhuv nplej siab thiab cawv, tab sis yog tias lawv tsis muaj purity tsawg, lawv tuaj yeem hnov qab ntau yam saj.
3. Cov ntshiab sodium carboxymethyl cellulose yog fluffy visually, thiab bulk ntom yog me me, qhov ntau yog: 0.3-0.4 / ml; qhov fluidity ntawm kev deev luag poj luag txiv yog qhov zoo dua, txhais tes xav tias hnyav dua, thiab muaj qhov sib txawv tseem ceeb nrog qhov zoo li qub.
4. Cov ntsiab lus chloride ntawm CMC feem ntau suav nrog hauv CL, tom qab ntsuas cov ntsiab lus CL, cov ntsiab lus NaCl tuaj yeem hloov mus rau CL% * 1.65.
Muaj qee qhov kev sib raug zoo ntawm CMC cov ntsiab lus thiab cov tshuaj chloride, tab sis tsis yog tag nrho, muaj cov impurities xws li sodium glycolate. Tom qab paub qhov purity, NaCl cov ntsiab lus tuaj yeem kwv yees kwv yees NaCl% = (100-purity) / 1.5
Cl% = (100-purity)/1.5/1.65
Yog li ntawd, tus nplaig-licking khoom muaj ib tug muaj zog ntsev saj, qhia tias purity tsis siab.
Nyob rau tib lub sijhawm, high-purity sodium carboxymethyl cellulose yog lub xeev fiber ntau, thaum cov khoom tsis muaj purity yog granular. Thaum yuav khoom, koj yuav tsum kawm ntau txoj hauv kev yooj yim ntawm kev txheeb xyuas. Tsis tas li ntawd, koj yuav tsum xaiv ib lub chaw tsim khoom nrog lub koob npe zoo, kom cov khoom zoo tau lees paub ntau dua.
Lub sij hawm xa tuaj: Nov-11-2022