Txau ceev-teeb roj hmab asphalt waterproof txheej yog txheej txheej dej. Yog hais tias lub diaphragm tsis tau khaws cia tag nrho tom qab txau, cov dej yuav tsis evaporate tag nrho, thiab huab cua npuas yuav yooj yim tshwm sim thaum kub kub, ua rau nyias nyias ntawm cov yeeb yaj kiab tsis zoo, thiab cov dej tsis zoo, tiv thaiv corrosion, thiab huab cua tsis kam. . Vim hais tias kev saib xyuas ib puag ncig ntawm qhov chaw tsim kho feem ntau tsis tuaj yeem tswj tau, nws yog qhov tsim nyog los txhim kho qhov kub thiab txias tsis kam ntawm cov tshuaj tsuag sai-teeb roj hmab asphalt waterproof coatings los ntawm kev xav ntawm formulation.
Cov dej-soluble cellulose ether tau raug xaiv los txhim kho qhov kub thiab txias tsis kam ntawm cov tshuaj tsuag sai-setting roj hmab asphalt waterproofing cov ntaub ntawv. Nyob rau tib lub sijhawm, qhov cuam tshuam ntawm hom thiab tus nqi ntawm cellulose ether ntawm cov khoom siv kho tshuab, kev ua haujlwm txau, tiv thaiv tshav kub thiab khaws cia cov tshuaj tsuag sai-teeb roj hmab asphalt waterproof coatings tau kawm. kev ua haujlwm cuam tshuam.
Kev npaj ua qauv
Dissolve hydroxyethyl cellulose hauv 1/2 deionized dej, do kom txog thaum nws yaj tag, ces ntxiv emulsifier thiab sodium hydroxide rau cov dej ntxiv 1/2 deionized thiab do sib npaug los npaj cov tshuaj xab npum, thiab thaum kawg, sib tov cov saum toj no ob txoj kev daws teeb meem. sib tov sib xyaw kom tau txais cov tshuaj aqueous ntawm hydroxyethyl cellulose, thiab nws tus nqi pH yog tswj ntawm 11 thiab 13.
Sib tov emulsified asphalt, neoprene latex, hydroxyethyl cellulose aqueous tov, defoamer, thiab lwm yam raws li ib qho piv txwv kom tau txais cov khoom A.
Npaj ib qho concentration ntawm Ca (NO3) 2 aqueous tov raws li cov khoom B.
Siv cov cuab yeej siv hluav taws xob tshwj xeeb los tshuaj tsuag cov khoom A thiab cov khoom B mus rau hauv daim ntawv tso tawm tib lub sijhawm, kom cov ntaub ntawv ob leeg tuaj yeem tiv tauj thiab teeb tsa sai rau hauv zaj duab xis thaum lub sijhawm hla atomization txheej txheem.
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 cov txheej txheem tom qab ntxiv tau raug coj los kawm txog qhov cuam tshuam ntawm cov viscosity thiab qhov sib ntxiv ntawm hydroxyethyl cellulose ntawm kev txau ntawm kev ceev ceev. roj hmab asphalt waterproof coatings, Film-forming zog, tshav kub tsis kam, mechanical zog thiab cia khoom. Txhawm rau kom tsis txhob muaj kev puas tsuaj rau lub cev sib npaug los ntawm kev ntxiv cov tshuaj hydroxyethyl cellulose, uas ua rau demulsification, ib qho emulsifier thiab pH regulator tau ntxiv thaum lub sij hawm npaj cov tshuaj hydroxyethyl cellulose.
Kev cuam tshuam ntawm Viscosity ntawm Hydroxyethyl Cellulose (HEC) ntawm Kev Txau thiab Zaj Duab Xis Cov Khoom Ntawm Cov Txheej Txheem Dej
Qhov ntau dua qhov viscosity ntawm hydroxyethyl cellulose (HEC), qhov ntau dua qhov cuam tshuam rau cov tshuaj tsuag thiab zaj duab xis-tsim cov khoom ntawm cov dej tsis zoo. Thaum nws cov nyiaj ntxiv yog 1‰, HEC nrog viscosity ntawm 50 000 mPa·s ua rau cov viscosity ntawm cov txheej txheem waterproof Thaum nws nce 10 npaug, txau yuav nyuaj heev, thiab lub diaphragm shrinks hnyav, thaum HEC nrog viscosity ntawm 10 000 mPa·s muaj kev cuam tshuam me ntsis rau kev txau, thiab lub diaphragm shrinks ib txwm.
Qhov cuam tshuam ntawm Hydroxyethyl Cellulose (HEC) ntawm Kev Tiv Thaiv Kub Kub ntawm Cov Txheej Txheem Dej
Cov tshuaj tsuag sai-txhim kho cov roj hmab asphalt waterproof txheej tau txau rau ntawm daim ntawv txhuas los npaj cov qauv ntsuas kub, thiab nws tau kho raws li kev kho mob ntawm cov dej-raws li asphalt waterproof txheej tau teev tseg hauv lub teb chaws tus qauv GB / T 16777- Xyoo 2008. Hydroxyethyl cellulose nrog viscosity ntawm 50 000 mPa·s muaj qhov hnyav molecular hnyav. Ntxiv nrog rau kev ncua sijhawm dej evaporation, nws kuj muaj qee yam ntxiv dag zog, ua rau nws nyuaj rau cov dej evaporate los ntawm cov txheej sab hauv, yog li nws yuav tsim cov bulges loj. Qhov hnyav molecular ntawm hydroxyethyl cellulose nrog viscosity ntawm 10 000 mPa·s yog me me, uas tsis tshua muaj kev cuam tshuam rau lub zog ntawm cov khoom thiab tsis cuam tshuam rau volatilization ntawm dej, yog li tsis muaj npuas tiam.
Cov nyhuv ntawm tus nqi ntawm hydroxyethyl cellulose (HEC) ntxiv
Hydroxyethyl cellulose (HEC) nrog viscosity ntawm 10 000 mPa·s raug xaiv los ua cov khoom tshawb fawb, thiab cov txiaj ntsig ntawm qhov sib txawv ntawm HEC ntawm cov tshuaj txau thiab kev ua haujlwm kub ntawm cov dej tsis muaj dej tau tshawb xyuas. Xav txog qhov kev ua tau zoo ntawm cov tshuaj txau, tiv thaiv tshav kub thiab cov khoom siv hluav taws xob ntawm cov txheej txheem dej tsis zoo, nws tau txiav txim siab tias qhov zoo tshaj plaws ntawm hydroxyethyl cellulose yog 1‰.
Cov neoprene latex nyob rau hauv cov tshuaj tsuag sai-teeb roj hmab asphalt waterproof txheej thiab cov emulsified asphalt muaj qhov sib txawv loj hauv polarity thiab ntom, uas ua rau delamination ntawm cov khoom A hauv lub sijhawm luv luv ntawm lub sijhawm khaws cia. Yog li ntawd, thaum lub sij hawm tsim kho ntawm qhov chaw nws yuav tsum tau nplawm tusyees ua ntej nws yuav tsum tau txau, txwv tsis pub nws yuav yooj yim ua rau zoo raug xwm txheej. Hydroxyethyl cellulose tuaj yeem daws tau qhov teeb meem delamination ntawm cov tshuaj tsuag sai-teeb roj hmab asphalt waterproof txheej. Tom qab ib hlis ntawm kev khaws cia, tseem tsis muaj delamination. Lub viscosity ntawm lub system tsis hloov ntau, thiab stability yog zoo.
tsom
1) Tom qab hydroxyethyl cellulose ntxiv rau cov tshuaj tsuag sai-txhim kho roj hmab asphalt waterproof txheej, lub tshav kub tsis kam ntawm cov dej tsis zoo yog txhim kho zoo heev, thiab cov teeb meem ntawm cov npuas ntom ntom ntawm cov txheej txheej zoo heev.
2) Raws li qhov tseeb tias tsis cuam tshuam rau cov txheej txheem txau, kev ua yeeb yaj kiab thiab cov khoom siv kho tshuab, cov hydroxyethyl cellulose tau txiav txim siab los ua hydroxyethyl cellulose nrog viscosity ntawm 10 000 mPa·s, thiab qhov ntxiv yog 1‰.
3) Qhov sib ntxiv ntawm hydroxyethyl cellulose txhim kho kev ruaj ntseg ntawm cov tshuaj tsuag sai-teeb roj hmab asphalt waterproof txheej, thiab tsis muaj delamination tshwm sim tom qab cia rau ib hlis.
Post lub sij hawm: May-29-2023