Poly (carboxylic acid high efficiency water လျှော့ချ tus neeg sawv cev yog hom kev ua tau zoo ntawm cov khoom lag luam, feem ntau thiab cov pob zeb ua ke yog siv, tab sis qee tus neeg tsis muaj kev sib cuag nrog cov khoom no, nyob rau hauv tus txheej txheem ntawm kev siv yuav nkag mus siv thaj chaw erroneous, xws li tus neeg tso dej txo nrog rau lwm yam ntau yam, los koom nrog qhov tsis zoo ntawm kev ua haujlwm ruaj khov ntawm kev ua tau zoo ntawm cov khoom hloov kho lossis cov teeb meem khoom, cov teeb meem no tau yooj yim nkag mus rau thaj chaw erroneous, ntawm no peb piav qhia rau txhua tus peb cov dab neeg uas koj tom qab lub sijhawm siv yuav ua tau zam, ntawm no peb ua ke thiab pom nws!
1, nrog rau lwm yam ntau yam ntawm cov dej tso tus neeg sawv cev siv, tsis muaj cov nyhuv superposition
Yav dhau los, thaum cov pob zeb ua tiav, ntau yam ntawm tus neeg sawv cev rau lub tshuab tso kua mis tuaj yeem hloov ntawm qhov yuav ua tau, thiab yuav tsis muaj qhov sib txawv ntawm cov yam ntxwv ntawm kev sib xyaw ua vaj tse thiab kuaj pom, thiab yuav tsis muaj kev hloov pauv tam sim ntawd ntawm pob zeb sib tov.
Tab sis txij li kev sib xyaw chaw nres tsheb npaj raws li cov kev xav tau ntawm tus neeg siv tom qab tov poly carboxylic acid series ntawm cov qhob dej txo tus neeg sawv cev, feem ntau yuav tshwm sim qee qhov teeb meem tsis meej heev: cov khoom siv hauv kev ua haujlwm ntawm cov pob zeb ua kev sib xyaw ua kom tawg tau ua ntej los ntawm kev soj ntsuam, qee zaum dej cov ntsiab lus muaj qhov loj, pob zeb tseem qhuav heev, qee zaum cov pob zeb ua kev poob qis dua qhov sib xyaw dua sai dua qhov ntxiv cov khoom siv ua kom tsis tu ncua, qee zaum cov pob zeb ua kev sib xyaw tsis tuaj yeem tawm, thiab qhov sib zog ntawm cov qhob coj los ntsuas qhov quav, nws tsawg dhau los ntseeg ntau!
Peb txhua tus paub tias cov tsoos superplasticizer, xws li lignosulfonate superplasticizer, naphthalene superplasticizer, melamine superplasticizer, aliphatic superplasticizer thiab sulfonate superplasticizer, tuaj yeem sib xyaw rau hauv ib qho kev sib txig kom tau raws li cov kev npaj tshwj xeeb ntawm cov haujlwm sib txawv, lossis tau txais kev lag luam zoo dua.
Cov superplasticizer compound siv tau tuaj yeem muab cov superposition (feem ntau zoo dua li ib qho sib xyaw) siv cov nyhuv, thiab cov kev daws teeb meem ntawm cov superplasticizer no tuaj yeem sib xyaw tau yooj yim (ntxiv rau lignosulfonate superplasticizer thiab naphthalene series superplasticizer ob leeg soluble los tsim ib feem ntawm cov nag lossis daus tab sis ua tsis cuam tshuam rau cov nyhuv siv).
Tab sis polycarboxylic acid system superplasticizer thiab lwm yam ntawm superplasticizer compound siv, tab sis tsis yooj yim rau superimpose cov nyhuv, thiab polycarboxylic acid system superplasticizer tov thiab lwm yam ntau yam ntawm superplasticizer ntawm kev sib nrig sib solubility nws tus kheej yog qhov tsis zoo heev.
2. Nws tsis muaj qhov hloov kho nyhuv tom qab ntxiv cov khoom siv hloov kho feem ntau
Tam sim no rau poly (carboxylic acid siab ua hauj lwm dej txo tus neeg saib xyuas kev tshawb fawb siv tsawg dua, feem ntau, lub hom phiaj ntawm kev tshawb fawb txog kev tshawb fawb yog txhawm rau txhim kho cov yas kom tsawg dua cov dej nkaus xwb, nws' s nyuaj ua raws li kev sib txawv engineering xav tau , los ntawm cov qauv molecular tsim synthesis nrog cov sib txawv retarding nyhuv ntawm coagulation, roj, lossis roj sib txawv, sib txawv viscosity ntawm poly (carboxylic acid dej txo tus neeg sawv cev series khoom).
Vim tias muaj ntau haiv neeg thiab tsis txaus ntseeg ntawm cov cement, admixture thiab kev sib sau ua ke hauv engineering, nws yog ib qho tseem ceeb heev rau cov chaw tsim khoom ntxiv los ua cov kev hloov kho sib txuas ntawm polycarboxylic acid superplasticizer raws li cov kev xav tau engineering.
Nyob rau tam sim no, lub tshuab ua ke cov kev hloov kho ntawm cov neeg ua haujlwm superplasticizer yog qhov pib raws li kev hloov kho ntawm cov tsoos superplasticizer xws li lignosulfonate system thiab naphthalene system.
Cov kev sim pom tau qhia tias cov kev hloov kho yav dhau los tsis tsim nyog rau cov kab mob polycarboxylic acid superplasticizer.
Piv txwv li, sodium citrate tsis haum rau polycarboxylic acid superplasticizer hauv kev hloov kho sai ntawm cov naphthalene superplasticizer. Nws tsis tsuas yog tsis ua kom zoo li qub, tab sis yuav txhawb kev coagulation, thiab kev sib nrig sib solubility ntawm sodium citrate tov thiab polycarboxylic acid superplasticizer kuj tsis zoo.
Ntxiv mus, ntau ntau yam ntawm tus neeg sawv cev tiv thaiv huab cua, tus neeg sawv cev huab cua thiab tus neeg sawv cev thickening tsis haum rau polycarboxylic acid system dej ua haujlwm.
Raws li kev ntsuam xyuas saum toj no thiab tshuaj xyuas, peb pom tsis nyuaj, vim tias qhov tshwj xeeb ntawm poly carboxylic acid yog cov qauv txheej txheem ntawm cov dej txo tus neeg sawv cev, yog tam sim no theem ntawm kev tshawb nrhiav qhov tob thiab kev siv, dhau los ntawm lwm yam tshuaj lom neeg muaj txiaj ntsig ntawm kev hloov kho poly ( carboxylic acid yog dej txo tus neeg sawv cev txhais tau tias tsis muaj ntau, tab sis yav dhau los rau lwm yam ntau yam dej txo tus neeg sawv cev hloov kho los ntawm kev tsim qauv thiab cov qauv tshwj xeeb, rau poly (carboxylic acid yog dej txo tus neeg sawv cev, tej zaum yuav xav tau kev tshawb nrhiav tob dua txog kev hloov kho thiab ntxiv.
3. Kev ua haujlwm ruaj khov ntawm cov khoom yog qhov tsis zoo
Qhob dej-txo tus neeg sawv cev synthesis qhauj tuaj yeem suav tau tias cov khoom lag luam tshuaj zoo yog tsis muaj ntau, ntau lub lag luam tsuas yog nyob hauv theem pib theem ntawm kev sib xyaw tshuab thiab ntim tshuab, cov khoom lag luam zoo yog txwv los ntawm cov khoom siv zoo.
Hais txog kev tswj kev tsim khoom, qhov tsis txaus ntseeg ntawm cov khoom siv raw khoom thiab qhov zoo tau ib txwm muaj qhov cuam tshuam loj rau kev ua haujlwm ntawm polycarboxylic acid superplasticizer.
Raws li tau paub rau txhua tus, ib qho ntawm cov khoom siv ntawm naphthalene series cov dej muaj txiaj ntsig txo tus neeg sawv cev ntau qib ntawm kev lag luam naphthalene, kev muab khoom thiab thov kev sib cav tsis sib haum naphthalene series cov dej muaj txiaj ntsig txo tus neeg saib xyuas cov khoom lag luam tus nqi thiab cov khoom lag luam zoo hloov pauv, kev tswj cov khoom lag luam npaj txhij -mixed cov tuam txhab ua vaj tse thiab muaj qhov cuam tshuam rau qhov zoo ntawm cov pob zeb ua vaj tse engineering, tab sis cov dej ntws tsis zoo feem ntau ntawm naphthalene series cov dej ua kom muaj zog txo tus neeg ua haujlwm tseem tsuas yog hauv cov khoom ua yas thiab ua kom muaj zog.
Lub tuam tsev ntawm poly carboxylic acid dej txo tus neeg sawv cev cov khoom siv los ntawm thaum pib ntawm lub ntsiab raw cov khoom tuaj ntawm lub teb chaws Yelemees, Kaus lim qab teb, txog rau tam sim no txhua yam yog ua los ntawm cov khoom lag luam hauv tsev, cov khoom ua tau zoo thiab cov txiaj ntsig tau hloov loj heev, qhov no tsis yog ntawm cov ntsiab lus plasticizing, thiab lub sijhawm no, cov qauv ua npuas, rov ua haujlwm qeeb, poob qis thiab viscosity, thiab lwm yam.
Txhawm rau kom nce cov txiaj ntsig, cov khoom lag luam rau ib tus neeg hloov pauv cov ntsiab lus ntawm masterbatch lossis qhov sib xyaw ntawm cov khoom tseem ceeb ntawm qhov yuav, uas ua rau cov ntses-qhov muag sib xyaw ntawm polycarboxylic acid cov dej ua lag luam reducer kev lag luam, uas ua rau nws nyuaj rau kev tiv thaiv.
