Xab npum ua kua yog ib yam tshuaj ntxuav uas siv tau ntau yam thiab siv tau dav vim nws yooj yim thiab ua haujlwm tau zoo. Txawm li cas los xij, qee zaum, cov neeg siv yuav xav tau cov khoom tuab dua kom ua tau zoo dua thiab siv tau zoo dua. Hydroxyethylcellulose (HEC) yog ib yam tshuaj ua kom tuab uas siv los ua kom tau cov viscosity uas xav tau hauv cov kua xab npum.
Kawm txog Hydroxyethyl Cellulose (HEC):
Cov qauv tshuaj lom neeg thiab cov khoom:
HEC yog cov polymer uas yaj tau hauv dej los ntawm cellulose, ib qho polymer ntuj pom muaj nyob rau hauv cov phab ntsa ntawm cov nroj tsuag.
Nws cov qauv tshuaj muaj xws li cellulose backbone nrog hydroxyethyl pawg, ua rau nws yaj tau zoo hauv dej thiab sib xws nrog ntau yam formulations.
Txoj kev ua kom tuab:
HEC ua rau cov kua dej tuab los ntawm kev nce viscosity los ntawm kev khaws dej thiab cov khoom ua yeeb yaj kiab.
Nws tsim ib lub network peb-seem hauv dej, tsim cov qauv zoo li gel uas ua rau cov kua sib xws.
Kev sib raug zoo nrog cov surfactants:
HEC muaj kev sib raug zoo nrog cov surfactants feem ntau siv rau hauv cov kua xab npum.
Nws qhov kev ruaj khov nyob rau hauv qhov muaj cov tshuaj sib txawv ua rau nws zoo tagnrho rau cov khoom xab npum tuab.
Cov yam tseem ceeb uas cuam tshuam rau kev ua kom xab npum tuab:
Daim ntawv qhia ua xab npum:
Nws yog ib qho tseem ceeb heev uas yuav tsum nkag siab txog cov khoom xyaw tseem ceeb ntawm xab npum ua kua. Qhov muaj qee cov ions, pH, thiab lwm yam khoom tuaj yeem cuam tshuam rau HEC kev ua tau zoo.
Qhov xav tau viscosity:
Ib qho viscosity uas tau txhais meej meej yog qhov tseem ceeb rau kev txiav txim siab qhov concentration ntawm HEC uas yuav siv.
kub:
Qhov kub thaum lub sijhawm tsim cov tshuaj cuam tshuam rau kev yaj thiab kev ua haujlwm ntawm HEC. Tej zaum yuav xav tau kev hloov kho raws li qhov kub ua haujlwm.
Kev siv HEC rau hauv cov zaub mov ua kua xab npum:
Cov ntaub ntawv thiab khoom siv:
Sau cov khoom xyaw tsim nyog suav nrog cov xab npum ua kua, hmoov HEC, dej, thiab lwm yam khoom ntxiv.
Nruab nrog lub thawv sib tov, stirrer thiab pH meter.
Kev npaj ntawm HEC kua:
Ntsuas qhov xav tau ntawm HEC hmoov raws li qhov xav tau viscosity.
Maj mam ntxiv HEC rau hauv dej sov, do tas li kom tsis txhob sib sau ua ke.
Cia qhov sib tov kom hydrate thiab o.
Ua ke HEC kua nrog cov kua xab npum ua ke:
Maj mam ntxiv cov tshuaj HEC rau hauv lub hauv paus xab npum thaum do maj mam.
Nco ntsoov faib kom sib npaug zos kom tsis txhob muaj cov pawg thiab tsis sib xws.
Saib xyuas qhov viscosity thiab kho raws li qhov xav tau.
Kev kho pH:
Ntsuas cov pH ntawm cov khoom sib tov thiab kho yog tias tsim nyog siv citric acid lossis sodium hydroxide.
Kev tswj kom muaj pH zoo yog qhov tseem ceeb rau kev ruaj khov ntawm cov mis.
Sim thiab ua kom zoo dua:
Kev ntsuam xyuas viscosity tau ua tiav ntawm ntau theem kom ua kom zoo dua qhov concentration ntawm HEC.
Kho cov zaub mov raws li cov txiaj ntsig ntawm kev xeem kom txog thaum tau txais qhov sib xws xav tau.
Kev ruaj khov thiab kev cia khoom xav txog:
Lub kaw lus tiv thaiv xeb:
Siv cov txheej txheem tiv thaiv kom tsim nyog los tiv thaiv kev kis kab mob microbial thiab ua kom cov xab npum ua kua tuab ntev dua.
Pob:
Xaiv cov ntaub ntawv ntim khoom uas tsim nyog uas yuav tsis ua rau xab npum ua xua lossis ua rau HEC tsis ruaj khov.
Cov xwm txheej cia khoom:
Khaws cov xab npum ua kua tuab rau hauv qhov chaw txias, qhuav kom deb ntawm tshav ntuj ncaj qha kom nws ruaj khov thiab zoo rau lub sijhawm ntev.
Hydroxyethylcellulose yog ib qho khoom siv ua kom tuab uas muaj txiaj ntsig zoo uas muab kev daws teeb meem rau kev ua tiav qhov xav tau viscosity hauv cov kua xab npum. Los ntawm kev nkag siab txog nws cov khoom, cov yam ntxwv cuam tshuam rau qhov tuab, thiab cov txheej txheem sib xyaw ua ke, cov neeg tsim khoom tuaj yeem tsim cov xab npum zoo nrog kev sib xws thiab kev ua tau zoo dua. Kev sim, kev sim thiab kev ua kom zoo dua yog cov ntsiab lus tseem ceeb ntawm cov txheej txheem, kom ntseeg tau tias cov khoom kawg ua tau raws li qhov yuav tsum tau ua haujlwm thiab kev zoo nkauj. Los ntawm kev xav txog cov khoom xyaw thiab cov txheej txheem tsim khoom, cov chaw tsim khoom xab npum tuaj yeem muab cov neeg siv khoom nrog cov khoom zoo thiab lom zem.
Lub sijhawm tshaj tawm: Lub Kaum Ob Hlis-26-2023