Sodium carboxymethyl cellulose (CMC-Na luv luv) yog ib qho tseem ceeb ntawm cov dej-soluble polymer compound, dav siv hauv cov khoom noj, tshuaj, tshuaj pleev ib ce, textile, papermaking thiab kev lag luam. Raws li feem ntau siv thickener, stabilizer thiab emulsifier,
1. Cov khoom siv raw xaiv thiab kev tswj kom zoo
Thaum xaiv CMC-Na, koj yuav tsum xyuam xim rau kev xaiv cov khoom zoo. Cov ntsuas zoo ntawm cov khoom suav nrog qib kev hloov pauv, viscosity, purity thiab pH tus nqi. Qib ntawm kev hloov pauv yog hais txog cov ntsiab lus ntawm carboxylmethyl pawg hauv CMC-Na molecule. Feem ntau, qhov siab dua qhov kev hloov pauv, qhov zoo dua qhov solubility. Viscosity txiav txim siab qhov sib xws ntawm cov tshuaj, thiab qib viscosity tsim nyog yuav tsum raug xaiv raws li qhov xav tau ntawm daim ntawv thov. Tsis tas li ntawd, xyuas kom meej tias cov khoom tsis muaj ntxhiab tsw, tsis muaj impurities, thiab ua tau raws li cov qauv tsim nyog, xws li qib zaub mov, qib tshuaj, thiab lwm yam.
2. Cov dej yuav tsum tau ua kom zoo rau kev npaj cov tshuaj
Thaum npaj CMC-Na tov, qhov zoo ntawm cov dej siv yog qhov tseem ceeb heev. Nws yog feem ntau yuav tsum tau siv cov dej ntshiab lossis dej deionized kom tsis txhob muaj kev cuam tshuam ntawm impurities hauv dej ntawm CMC-Na tov. Cov impurities xws li hlau ions thiab chloride ions hauv dej tuaj yeem ua rau cov tshuaj lom neeg nrog CMC-Na, cuam tshuam rau kev ruaj ntseg thiab kev ua haujlwm ntawm cov tshuaj.
3. Txoj kev sib cais thiab cov kauj ruam
Kev tawg ntawm CMC-Na yog cov txheej txheem qeeb, uas feem ntau yuav tsum tau ua hauv cov kauj ruam:
Pre-wetting: Ua ntej ntxiv CMC-Na hmoov rau dej, nws raug nquahu kom ntub nws nrog me me ntawm ethanol, propylene glycol lossis glycerol. Qhov no pab tiv thaiv cov hmoov los ntawm agglomerating thaum lub sij hawm dissolution txheej txheem thiab tsim ib tug uneven tov.
Kev pub mis qeeb: Maj mam ntxiv CMC-Na hmoov hauv qab nplawm. Sim kom tsis txhob ntxiv cov hmoov ntau ntawm ib lub sij hawm kom tsis txhob tsim cov lumps thiab nyuaj rau dissolving.
Kev nplawm tag nrho: Tom qab ntxiv cov hmoov, txuas ntxiv stirring kom txog thaum nws yaj tag. Lub stirring ceev yuav tsum tsis txhob ceev heev los tiv thaiv cov tiam ntawm ntau npuas thiab cuam tshuam rau lub pob tshab ntawm cov tshuaj.
Kev tswj qhov kub thiab txias: Qhov kub thiab txias thaum lub sij hawm dissolution txheej txheem muaj qee yam cuam tshuam rau tus nqi dissolution. Feem ntau hais lus, qhov kub ntawm 20 ° C thiab 60 ° C yog qhov tsim nyog dua. Qhov kub thiab txias dhau tuaj yeem ua rau cov tshuaj viscosity txo qis thiab tseem ua rau cov qauv ntawm CMC-Na puas.
4. Cia thiab ruaj khov ntawm kev daws
Cov tshuaj CMC-Na npaj yuav tsum muab khaws cia rau hauv lub thawv ntim thiab tsis txhob sib cuag nrog huab cua kom tiv thaiv kom tsis txhob ya raws thiab oxidation. Nyob rau tib lub sij hawm, ncaj qha tshav ntuj thiab kub ib puag ncig yuav tsum tau zam kom ntau li ntau tau kom muaj kev ruaj ntseg ntawm cov tshuaj. Thaum lub sij hawm ntev cia, cov tshuaj yuav deteriorate vim kev loj hlob ntawm cov kab mob, yog li koj muaj peev xwm txiav txim siab ntxiv preservatives xws li sodium benzoate thiab poov tshuaj sorbate thaum npaj nws.
5. Siv thiab kho cov tshuaj
Thaum siv cov tshuaj CMC-Na, koj yuav tsum tau ceev faj kom tsis txhob muaj kev sib cuag nrog cov kua qaub uas muaj zog thiab cov hauv paus muaj zog kom tsis txhob muaj tshuaj lom neeg uas cuam tshuam rau kev ruaj ntseg thiab kev ua haujlwm ntawm cov tshuaj. Tsis tas li ntawd, cov tshuaj CMC-Na ua rau khaus ntawm daim tawv nqaij thiab qhov muag rau qee qhov, yog li koj yuav tsum hnav cov khoom tiv thaiv tsim nyog thaum siv nws, xws li hnab looj tes, tsom iav, thiab lwm yam.
6. Kev tiv thaiv ib puag ncig thiab pov tseg pov tseg
Thaum siv CMC-Na, koj yuav tsum xyuam xim rau kev tiv thaiv ib puag ncig ntawm pov tseg. Cov khib nyiab CMC-Na cov tshuaj yuav tsum tau ua raws li cov kev cai cuam tshuam kom tsis txhob muaj kuab paug rau ib puag ncig. Cov khib nyiab feem ntau tuaj yeem kho los ntawm biodegradation lossis tshuaj kho.
Thaum npaj cov tshuaj sodium carboxymethyl cellulose, nws yog ib qho tsim nyog yuav tsum tau ua tib zoo xav thiab ua haujlwm los ntawm ntau yam xws li kev xaiv raw khoom, txoj kev sib cais, kev cia khoom thiab kev tiv thaiv ib puag ncig. Tsuas yog nyob rau hauv qhov kev tswj hwm nruj ntawm txhua qhov txuas tuaj yeem npaj cov kev daws teeb meem muaj kev ua tau zoo thiab ruaj khov kom tau raws li qhov xav tau ntawm cov ntawv thov sib txawv.
Post lub sij hawm: Aug-03-2024