Hydroxyethyl cellulose (HEC) yog cov dej-soluble polymer nquag siv los ua cov tuab tuab, emulsifier, stabilizer, stabilizer, tog, thiab lwm yam.
Hydroxyethyl cellulose cov kauj ruam kawg
Npaj cov khoom thiab khoom siv:
Hydroxyethyl cellulose hmoov
Cov kuab tshuaj (feem ntau yog dej)
Stirring Doice (xws li cov neeg kho mob ntaus pob)
Ntsuas cov cuab yeej (ntsuas lub tog raj kheej, sib npaug, thiab lwm yam)
Lub hwj
Muab cua sov cov tshuaj:
Txhawm rau ua kom nrawm dua cov txheej txheem sib cais, cov kuab tshuaj tuaj yeem ua kom muaj zog kom tsim nyog, tab sis feem ntau yuav tsum tsis pub dhau 50 ° C kom tsis txhob muaj qhov ua rau thermal. Dej kub ntawm 30 ° C thiab 50 ° C yog qhov zoo tagnrho.
Maj mam ntxiv hec hmoov:
Maj mam nphoo hec hmoov rau hauv dej sov. Txhawm rau kom tsis txhob agglomeration, ntxiv nws los ntawm ib sab cib los yog maj mam li nphoo nws. Nco ntsoov tias HEC hmoov yog tusyees dispersed thaum lub sij hawm stirringing.
Txuas ntxiv mus do:
Thaum lub sij hawm cov txheej txheem stirring, txuas ntxiv maj mam ntxiv ntxiv hec hmoov kom ntseeg tau tias cov hmoov yog tusyees dispersed hauv dej. Lub nrawm nrawm yuav tsum tsis txhob yoo mov kom tiv thaiv npuas thiab agglomeration. Nruab nrab ceev stirring yog feem ntau pom zoo.
Sawv ntsug xaus: Tom qab ua tiav dispersion, nws yog feem ntau yuav tsum tau sawv ntsug rau ib lub sijhawm (feem ntau yog ob peb teev lossis ntev dua) kom yaj tag nrho thiab tsim cov tshuaj sib dhos. Lub sijhawm sawv ntsug yog nyob ntawm cov molecular hnyav ntawm HEC thiab cov concentration ntawm kev daws teeb meem.
Kho viscosity: Yog tias viscosity yuav tsum tau hloov kho, tus nqi ntawm HEC tuaj yeem tsim nyog nce lossis poob qis. Ntxiv rau, nws kuj tseem tuaj yeem hloov kho los ntawm kev ntxiv cov electrolytes, hloov tus lej pH tus nqi, thiab lwm yam.
Kev ceev faj hauv kev sib nrauj
Zam kev agglomeration: hydroxyethyl cellulose yog yooj yim rau agglomerate, yog li thaum ntxiv cov hmoov, them nyiaj tshwj xeeb kom muaj. Ib sab cib lossis lwm yam khoom siv dispersing tuaj yeem siv los pab kom cov tsis taus.
Tswj kub: lub ntsuas kub yuav tsum tsis txhob siab dhau, txwv tsis pub nws yuav ua rau thecal degradation ntawm HEC thiab cuam tshuam kev ua haujlwm ntawm kev daws teeb meem. Nws feem ntau yog tsim nyog los tswj nws ntawm 30 ° C thiab 50 ° C.
Tiv thaiv huab cua los ntawm kev nkag mus: Tsis txhob txhib kom ceev ceev kom tiv thaiv huab cua los ntawm kev daws teeb meem los ua npuas. Cov npuas yuav cuam tshuam cov kev sib txuam thiab pob tshab ntawm kev daws teeb meem.
Xaiv cov khoom siv stirring: Xaiv cov khoom siv stirringing raws li cov viscosity ntawm kev daws. Rau kev daws teeb meem qis-viscosity, stirrers zoo tib yam yuav siv tau; Rau kev daws teeb meem siab, muaj zog stirrer yuav tsum tau ua.
Cia thiab khaws cia:
Qhov kev tshem tawm hec yaj yuav tsum muab cia rau hauv cov thawv ntim khoom kom tsis txhob muaj kev ya raws lossis paug. Thaum khaws cia rau lub sijhawm ntev, zam kev ua tshav ntuj ncaj qha thiab ntsuas kub kom muaj kev ruaj ntseg ntawm kev daws.
Cov teeb meem thiab kev daws teeb meem
Tsis xwm yeem:
Yog tias tsis muaj kev sib cais tsis tau, nws yuav yog vim tias cov hmoov yog sprinkled sai dhau los yog do tsis txaus. Txoj kev daws teeb meem yog txhawm rau txhim kho kev hnav ris tsho ntawm stirring, nce lub sijhawm stirring, lossis kho qhov nrawm ntawm cov hmoov ntxiv thaum lub sij hawm stirring.
Nkauj npuas:
Yog tias muaj ntau ntawm cov npuas tshwm sim hauv kev daws teeb meem, cov npuas tuaj yeem txo los ntawm kev ceev nrawm lossis cia nws sawv ntsug ntev. Rau npuas uas twb tau tsim, tus neeg sawv cev Degassing tuaj yeem siv lossis siv tau ultrasonic siv tau los tshem tawm lawv.
Daws viscosity yog qhov siab dhau los lossis qis dhau:
Thaum qhov kev daws viscosity tsis tau raws li cov cai, nws tuaj yeem tswj hwm los ntawm kev kho tus nqi ntawm HEC. Ib qho ntxiv, kho tus nqi PH thiab ionic lub zog ntawm kev daws teeb meem kuj tseem cuam tshuam rau cov viscosity.
Koj tuaj yeem cuam tshuam nrog hydroxyethyl cellulose thiab tau txais ib qho kev niaj hnub thiab cov tshuaj ruaj khov. Mastering cov kauj ruam kev ua haujlwm kom raug thiab ceev faj tuaj yeem ua kom zoo tshaj plaws ntawm hydroxyethyl cellulose hauv ntau yam kev siv.
Lub sij hawm Post: Lub Yim Hli 08-2024