Tshuaj tsuag cov roj hmab asphalt tiv thaiv dej txheej yog cov txheej dej ua los ntawm dej. Yog tias lub diaphragm tsis tau khaws cia tag nrho tom qab txau, cov dej yuav tsis ua pa tag, thiab cov pa npuas yuav yooj yim tshwm sim thaum lub sijhawm ci kub siab, ua rau cov zaj duab xis tiv thaiv dej nyias nyias, thiab tsis tiv thaiv dej, tiv thaiv xeb, thiab tiv thaiv huab cua tsis zoo. Vim tias qhov chaw kho vaj tse feem ntau tsis tuaj yeem tswj tau, nws yog qhov tseem ceeb uas yuav tsum txhim kho qhov tiv thaiv kub siab ntawm cov roj hmab asphalt tiv thaiv dej txheej los ntawm kev pom ntawm cov mis.
Cov cellulose ether uas yaj tau hauv dej tau raug xaiv los txhim kho qhov kub thiab txias ntawm cov roj hmab asphalt uas txau sai sai. Tib lub sijhawm, cov teebmeem ntawm hom thiab qhov ntau ntawm cellulose ether rau cov khoom siv kho tshuab, kev ua haujlwm txau, kev tiv taus cua sov thiab kev khaws cia ntawm cov roj hmab asphalt uas txau sai sai tau raug kawm. Kev cuam tshuam ntawm kev ua tau zoo.
Kev npaj qauv
Yaj hydroxyethyl cellulose hauv 1/2 dej deionized, do kom txog thaum nws yaj tag, tom qab ntawd ntxiv emulsifier thiab sodium hydroxide rau hauv 1/2 dej deionized seem thiab do kom sib npaug los npaj cov tshuaj xab npum, thiab thaum kawg, sib tov cov saum toj no. Ob qho kev daws teeb meem sib xyaw kom sib npaug kom tau txais cov tshuaj hydroxyethyl cellulose, thiab nws cov pH tus nqi yog tswj ntawm 11 thiab 13.
Sib tov cov asphalt emulsified, neoprene latex, hydroxyethyl cellulose aqueous solution, defoamer, thiab lwm yam raws li qee qhov piv kom tau txais cov khoom A.
Npaj ib qho concentration ntawm Ca (NO3) 2 aqueous kua ua B khoom.
Siv cov khoom siv hluav taws xob tshwj xeeb los tsuag cov khoom A thiab cov khoom B rau ntawm daim ntawv tso tawm tib lub sijhawm, kom ob yam khoom tuaj yeem tiv tauj thiab teeb tsa sai sai rau hauv zaj duab xis thaum lub sijhawm hla atomization.
Cov txiaj ntsig thiab kev sib tham
Hydroxyethyl cellulose nrog viscosity ntawm 10 000 mPa · s thiab 50 000 mPa · s tau raug xaiv, thiab txoj kev ntawm kev ntxiv tom qab tau raug saws los kawm txog cov teebmeem ntawm viscosity thiab ntxiv ntau ntawm hydroxyethyl cellulose ntawm kev ua haujlwm txau ntawm cov roj hmab asphalt dej txheej ceev, Cov khoom tsim zaj duab xis, kev tiv taus cua sov, cov khoom siv kho tshuab thiab cov khoom khaws cia. Txhawm rau kom tsis txhob muaj kev puas tsuaj rau qhov sib npaug ntawm lub kaw lus los ntawm kev ntxiv cov tshuaj hydroxyethyl cellulose, ua rau demulsification, ib qho emulsifier thiab pH regulator tau ntxiv thaum lub sijhawm npaj cov tshuaj hydroxyethyl cellulose.
Kev cuam tshuam ntawm Viscosity ntawm Hydroxyethyl Cellulose (HEC) ntawm kev txau thiab cov khoom tsim zaj duab xis ntawm cov txheej txheem dej tsis muaj zog
Qhov viscosity ntawm hydroxyethyl cellulose (HEC) ntau dua, qhov cuam tshuam loj dua rau kev txau thiab cov khoom ua yeeb yaj kiab ntawm cov txheej txheem dej tsis muaj dej. Thaum nws ntxiv tus nqi yog 1‰, HEC nrog viscosity ntawm 50 000 mPa · s ua rau viscosity ntawm cov txheej txheem dej tsis muaj dej. Thaum nws nce 10 zaug, kev txau ua rau nyuaj heev, thiab lub diaphragm shrinks hnyav, thaum HEC nrog viscosity ntawm 10 000 mPa · s muaj me ntsis cuam tshuam rau kev txau, thiab lub diaphragm shrinks feem ntau yog ib txwm muaj.
Cov Nyhuv ntawm Hydroxyethyl Cellulose (HEC) ntawm Kev Tiv Thaiv Kub ntawm Cov Txheej Txheem Tsis Muaj Dej
Cov txheej txheem tiv thaiv dej asphalt roj hmab uas tau txau sai sai tau txau rau ntawm daim ntawv txhuas los npaj cov qauv ntsuas kev tiv thaiv cua sov, thiab nws tau kho raws li cov xwm txheej kho ntawm cov txheej txheem tiv thaiv dej asphalt uas tau teev tseg hauv tus qauv hauv tebchaws GB / T 16777-2008. Cov hydroxyethyl cellulose nrog viscosity ntawm 50 000 mPa · s muaj qhov hnyav molecular loj. Ntxiv nrog rau kev ncua sijhawm dej evaporation, nws kuj muaj qee qhov kev ua kom muaj zog, ua rau nws nyuaj rau dej kom evaporation ntawm sab hauv ntawm cov txheej txheem, yog li nws yuav tsim cov bulges loj dua. Qhov hnyav molecular ntawm hydroxyethyl cellulose nrog viscosity ntawm 10 000 mPa · s yog me me, uas muaj me ntsis cuam tshuam rau lub zog ntawm cov khoom siv thiab tsis cuam tshuam rau kev volatilization ntawm dej, yog li tsis muaj npuas tsim.
Qhov cuam tshuam ntawm qhov ntau ntawm hydroxyethyl cellulose (HEC) ntxiv
Hydroxyethyl cellulose (HEC) nrog viscosity ntawm 10 000 mPa · s tau raug xaiv ua qhov khoom tshawb fawb, thiab cov teebmeem ntawm kev ntxiv sib txawv ntawm HEC rau kev ua haujlwm txau thiab kev tiv thaiv cua sov ntawm cov txheej txheem dej tau raug tshawb xyuas. Xav txog kev ua haujlwm txau, kev tiv thaiv cua sov thiab cov khoom siv kho tshuab ntawm cov txheej txheem dej kom meej, nws tau txiav txim siab tias qhov ntau ntxiv zoo tshaj plaws ntawm hydroxyethyl cellulose yog 1‰.
Cov roj hmab neoprene latex hauv cov roj hmab asphalt uas tau txau sai thiab cov asphalt emulsified muaj qhov sib txawv loj hauv polarity thiab density, uas ua rau cov khoom A tawg hauv lub sijhawm luv luv thaum khaws cia. Yog li ntawd, thaum lub sijhawm tsim kho nws yuav tsum tau do kom sib npaug ua ntej nws tuaj yeem txau, txwv tsis pub nws yuav yooj yim ua rau muaj kev raug mob zoo. Hydroxyethyl cellulose tuaj yeem daws tau qhov teeb meem delamination ntawm cov roj hmab asphalt uas tau txau sai. Tom qab ib hlis ntawm kev khaws cia, tseem tsis muaj delamination. Lub viscosity ntawm lub kaw lus tsis hloov pauv ntau, thiab qhov ruaj khov zoo.
tsom ntsoov
1) Tom qab ntxiv hydroxyethyl cellulose rau hauv cov roj hmab asphalt uas tau txau sai sai, qhov tiv taus cua sov ntawm cov txheej tiv thaiv dej tau zoo dua qub, thiab qhov teeb meem ntawm cov npuas ntom ntom ntawm qhov chaw ntawm cov txheej tau zoo dua qub.
2) Raws li lub hauv paus ntawm kev tsis cuam tshuam rau cov txheej txheem txau, kev ua yeeb yaj kiab thiab cov khoom siv kho tshuab, hydroxyethyl cellulose tau txiav txim siab tias yog hydroxyethyl cellulose nrog viscosity ntawm 10 000 mPa · s, thiab qhov ntxiv yog 1‰.
3) Qhov ntxiv ntawm hydroxyethyl cellulose txhim kho qhov ruaj khov ntawm cov roj hmab asphalt uas tau txau sai sai, thiab tsis muaj kev tawg tom qab khaws cia rau ib hlis.
Lub sijhawm tshaj tawm: Tsib Hlis-29-2023