Compatibility ntawm polycarboxylate superplasticizer nrog rau lwm yam admixtures

Compatibility ntawm polycarboxylate superplasticizer nrog rau lwm yam admixtures

Txhawm rau kom zoo dua qhov kev ua tau zoo ntawm superplasticizers, kev sib xyaw ntawm cov khoom siv feem ntau yog xaiv. Ib txwm lignin, naphthalene, aliphatic, thiab lwm yam tuaj yeem sib xyaw thiab sib xyaw ua ke hauv ib qho kev faib ua feem, tab sis polycarboxylate superplasticizer yuav pom tias muaj cov txiaj ntsig zoo dua ntawm cov khoom sib xyaw vim nws tus kheej rhiab heev thaum siv. Kev xaiv muaj zog, txog ib nrab ntawm cov dej hauv tsev txo cov neeg ua haujlwm tsis sib haum nrog nws.

Sun Zhenping cov txiaj ntsig kev tshawb fawb pom tau tias: tsuas yog los ntawm nam ntawm kev sib nrig sib solubility, kev sib xyaw ntawm polycarboxylic acid nrog aliphatic thiab melamine dej txo cov neeg ua haujlwm hauv cov haujlwm ua haujlwm yuav ua rau nag lossis daus thiab tsis tuaj yeem sib xyaw ua ke; los ntawm cov yam ntxwv ntawm cov nyhuv plasticizing Nws tuaj yeem pom tau tias kev sib xyaw ntawm polycarboxylic acid nrog naphthalene series thiab melamine series txo nws cov nyhuv plasticizing, tshwj xeeb tshaj yog thaum carboxylic acid compounded nrog naphthalene series, nws muaj qhov cuam tshuam loj tshaj plaws ntawm cov nyhuv plasticizing thiab slump tuav. Tom qab ntau cov dej reducers ntxiv rau cov pob zeb, lawv cov dej ntws yuav nce ntxiv nrog kev nce ntxiv, tab sis polycarboxylate dej reducer muaj qhov teeb meem uas thaum ntau npaum li cas, nws cov fluidity yuav txo qis heev. Thaum muaj cov ntsiab lus ntawm huab cua yuav tsum tau ua hauv pob zeb, defoamer thiab tus neeg saib xyuas huab cua feem ntau yog ntxiv. Thaum siv cov khoom siv tshuaj pleev ib ce, nws tuaj yeem ua lub luag haujlwm zoo, tab sis thaum siv polycarboxylate dej reducer, Qee zaum nws tsis hloov cov khoom npuas.

Compounding tshuab ntawm polycarboxylate superplasticizer

Raws li cov tiam tshiab ntawm kev ua tau zoo ntawm cov dej-txo tus neeg saib xyuas, polycarboxylate dej-txo tus neeg saib xyuas txawv ntawm cov tshuaj txo cov dej zoo tib yam. Nws muaj zog dispersibility rau pob zeb, siab dej-txo tus nqi, thiab me me slump poob ntawm pob zeb. Nws yog ib qho kev tawg loj hauv keeb kwm ntawm cov neeg ua haujlwm tshuaj, yog li nws yuav dhau los ua qhov tseem ceeb ntawm cov kws tshawb fawb kev tshawb fawb txog kev ua kom zoo tshaj plaws yav tom ntej.

Ntxiv rau txoj kev "molecular design" hauv niam cawv synthesis thev naus laus zis, polycarboxylate high-performance water-reduced agent products kuj yog tsim los ntawm kev ntxiv cov khoom me me xws li retarders, air-entraining agents, defoaming agents, thickeners, and anti- sludge agents. Nws yoog raws li kev tsim vaj tsev xav tau ntawm cov caij nyoog sib txawv, cov khoom sib txawv thiab kev sib xyaw ua ke, thiab thaum kawg tau txais cov dej ua haujlwm siab nrog kev ua haujlwm zoo heev. Rau polycarboxylic acid manufacturers nrog niam cawv synthesis technology, pib los ntawm lub polycarboxylic acid synthesis technology los tsim high-zoo polycarboxylate superplasticizers yuav tsum tau rau pob zeb thiab tau ntau hom kev haumxeeb niam cawv yog ib qho yuav tsum tau.

Txawm li cas los xij, kev sib xyaw ua ke thiab siv tswv yim ntawm niam cawv yuav tsum muaj lub sijhawm, thiab ib hom cawv niam tsis tuaj yeem daws tau ntau yam teeb meem hauv engineering daim ntawv thov ntawm superplasticizers. Nws yog ib qho tsim nyog ntxiv rau daim ntawv thov ntawm polycarboxylate superplasticizer, thiab nws yog ib qho tseem ceeb heev los daws cov teeb meem kev lag luam uas ntsib los ntawm qhov chaw engineering los ntawm cov yam ntxwv ntawm niam cawv thiab lub cev sib xyaw ua ke ntawm cov khoom me me. Yog li ntawd, kev sib xyaw thev naus laus zis ntawm polycarboxylate superplasticizer yog tsom rau cov kws tshawb fawb yav tom ntej.

Kev sib xyaw ntawm niam cawv ntawm polycarboxylate superplasticizers

Lub compounding ntawm niam cawv ntawm polycarboxylate dej-txo tus neeg saib xyuas tuaj yeem kho cov molecular sab saw ntom ntom ntawm cov khoom, thiab kawm los ntawm ib leeg. Nws tuaj yeem ua tiav los ntawm kev sib xyaw ntawm ntau yam niam cawv. Tau kawg, qhov yuav tsum tau ua ua ntej yog los ua ke ntau yam ntawm monomer niam cawv nrog cov khoom zoo thiab cov khoom sib txawv. Nws yog tsim nyog sau cia tias cov polycarboxylate series tsis tuaj yeem sib xyaw nrog naphthalene series, melamine series, amino sulfonate, thiab lwm yam.

Kev sib xyaw ntawm polycarboxylate superplasticizer thiab cov khoom siv me me

Txhawm rau daws cov teeb meem uas tau ntsib los ntawm ntau qhov haujlwm ntawm qhov chaw tsim kho tiag tiag, qhov no yuav tsum muaj kev ua haujlwm siab dua ntawm cov pob zeb. Lub sijhawm no, kev sib xyaw ua ke ntawm niam cawv yuav tsis ua raws li qhov yuav tsum tau ua, thiab kev ua haujlwm ntawm cov pob zeb yuav raug txhim kho ntxiv los ntawm kev ntxiv qee cov khoom siv me me (retarders, air-entraining agents, thickeners, etc.).

Qhov sib ntxiv ntawm retarder yog ib qho tseem ceeb ntawm cov khoom me me los kho lub sijhawm teeb tsa ntawm cov dej reducer kom hloov mus rau qhov sib txawv ntawm qhov kub thiab txias. Qee zaum ntxiv qee cov retarders yuav pab txo qhov poob qis, tab sis nws tsis tuaj yeem siv los ua ib txoj hauv kev zoo los tiv thaiv qhov poob qis. Nyob rau tib lub sij hawm, nyob rau hauv tus txheej txheem ntawm compounding lub retarder, peb yuav tsum tau xyuam xim rau lub fact tias cov retarder muaj ib tug tej yam dej-txo cov nyhuv, uas yuav tsum tau txiav txim siab nyob rau hauv tus txheej txheem ntawm compounding nrog cov dej-txo tus neeg sawv cev.

Cov pob zeb los ntshav yog ib qho teeb meem tshwm sim hauv engineering, thiab cov khoom siv xws li cov khoom siv cua nkag thiab cov thickeners tuaj yeem ua lub luag haujlwm. Ntxiv tus neeg saib xyuas huab cua tuaj yeem ua kom cov huab cua hauv cov pob zeb ua kom zoo dua qub thiab txhim kho nws cov ntshav thiab viscosity. Txawm li cas los xij, nws yuav tsum raug sau tseg tias huab cua cov ntsiab lus ntawm cov pob zeb tsis tuaj yeem siab dhau, txwv tsis pub lub zog ntawm cov pob zeb yuav tsawg dhau.

Hauv cov txheej txheem ntawm kev sib xyaw polycarboxylate superplasticizers thiab cov khoom siv me me, cov kws tshawb fawb yuav tsum ua cov teeb meem kev sib raug zoo nrog polycarboxylate superplasticizers ua ntej, thiab cov khoom siv me me yuav tsum tsim nyog. tswj kom tsis txhob muaj kev phiv.

Xaus thiab Outlook

Saib rov qab rau txoj kev loj hlob, nce qib thiab kev siv cov polycarboxylate superplasticizers hauv Suav teb hauv kaum xyoo dhau los, lub sijhawm no, peb tau ua tiav kev txhim kho txuas ntxiv thiab hloov tshiab ntawm polycarboxylate superplasticizers, thiab kev ua haujlwm kuj tau txhim kho. sib txawv nyob rau hauv lub teb chaws xws li Nyiv. Txawm hais tias polycarboxylate superplasticizers tseem muaj qee qhov teeb meem hauv kev tsim vaj tsev thiab lwm yam kev lag luam, uas txwv tsis pub siv dav ntawm polycarboxylate superplasticizers rau qee qhov, peb ntseeg siab tias nrog kev txhim kho ntawm polycarboxylate nrog rau kev sib sau thiab kev tshawb fawb tob ntawm cov kev xav ntawm cov superplasticizers thiab. cov ntsiab lus thiab kev txhim kho ntawm engineering xyaum kev, polycarboxylate superplasticizers yuav twv yuav raug hu mus rau engineering nrog zoo technicality thiab kev lag luam, yog li txhawb kev loj hlob sai ntawm cov pob zeb siv tshuab.

Nyob rau hauv lub neej yav tom ntej, polycarboxylate superplasticizers yog khi rau maj mam hloov cov tsoos ib txwm superplasticizers thiab tuav ib feem loj nyob rau hauv kev ua lag luam. Cov kws tshawb fawb yuav tsum ceev cov txheej txheem tshawb fawb ntawm ntau yam thiab sib txawv. Tam sim no, tag nrho peb hom niam cawv ntawm hom zoo tib yam, hom retardation thiab lub zog thaum ntxov ntawm kev ua lag luam nyob deb ntawm qhov txaus. Ntau cov niam dej cawv yuav tsum tau tsim kom muaj kev sib koom ua ke lossis lwm lub sijhawm kom ua tau raws li qhov xav tau ntawm engineering rau kev ua tau zoo. kev xav tau.

Txoj kev loj hlob ntawm polycarboxylate superplasticizers nrog cov haujlwm tshwj xeeb kuj tseem yog kev txhim kho yav tom ntej. Raws li cov xuab zeb ntuj tau maj mam tag, ntau lub tshuab ua cov xuab zeb thiab cov xuab zeb dag yuav siv rau hauv qhov chaw tsim kho yav tom ntej. Xuab zeb nrog cov av nkos siab thiab cov hmoov pob zeb siab cov ntsiab lus yuav inevitably cuam tshuam rau kev ua haujlwm ntawm pob zeb. Cov kws tshawb fawb yuav tsum siv zog los tsim cov polycarboxylate superplasticizers uas tiv taus cov av nkos thiab pob zeb hmoov.