Dab tsi yog qhov txawv ntawm Naphthalene Superplasticizer Thiab Polycarboxylic Acid Superplasticizer

Qhov sib txawv ntawm Dej-txo tus nqi

Cov dej-txo tus nqi ntawm polycarboxylate superplasticizers yog siab dua li ntawm naphthalene-based superplasticizers. Rau kev ua tiav tib qhov dej-txo tus nqi, qhov ntau npaum ntawm polycarboxylate superplasticizer feem ntau qis dua li ntawm naphthalene-based superplasticizers. Ntxiv mus, raws li kev noj ntau ntxiv, qhov kawg dej-txo tus nqi ntawm polycarboxylate superplasticizer deb tshaj li ntawm naphthalene-based superplasticizers. Qhov tom kawg nce mus txog nws qhov txwv nyob ib ncig ntawm 2.0% noj. Qhov no qhia tau hais tias polycarboxylate superplasticizers yog qhov tsim nyog rau kev tsim cov pob zeb muaj zog nrog cov dej-cement ratios tsawg.

Qhov txawv ntawm Mechanism of Action

Cov txheej txheem ntawm kev txiav txim rau polycarboxylate superplasticizers feem ntau cuam tshuam steric hindrance. Ntxiv nrog rau kev cuam tshuam steric, lawv kuj pom muaj qhov muaj zog huab cua-entraining cais "pob-cov kabmob" cov nyhuv thiab txo qis hauv cov kua-kua interfacial zog. Nyob rau hauv sib piv, lub mechanism ntawm kev txiav txim rau naphthalene-raws li superplasticizers yog tsuas yog raws li electrostatic repulsion, nrog rau yuav luag tsis muaj lwm yam teebmeem uas muaj txiaj ntsig txo dej.

Qhov twg yog qhov zoo dua: Polycarboxylate lossis Naphthalene-Based Superplasticizers?

Ntau tus neeg txhawj xeeb txog seb puas yog polycarboxylate superplasticizers lossis naphthalene-based superplasticizers zoo dua. Cov lus teb yeej nyob ntawm qhov xwm txheej tshwj xeeb.

Kev siv tau: Polycarboxylate superplasticizers muaj cov yas tuav ruaj ruaj, zoo tswj kev poob qis thaum lub sijhawm tsis muaj kev cuam tshuam rau lub sijhawm hardening ntawm pob zeb. Lawv muab kev txhawb zog ntau dua thiab muaj cov khoom tiv thaiv shrinkage, txhim kho cov impermeability thiab te kuj ntawm cov pob zeb ua tau zoo dua li naphthalene-based superplasticizers. Qhov no ua rau kev txhim kho durability ntawm cov pob zeb.

Nqi: Feem ntau, naphthalene-based superplasticizers yog pheej yig dua li polycarboxylate superplasticizers. Txawm li cas los xij, xav txog qhov ntau npaum li cas thiab kev ua tau zoo, tag nrho cov nqi siv ntawm polycarboxylate superplasticizers yuav qis dua.

Environmental Performance: Cov txheej txheem tsim khoom ntawm naphthalene-based superplasticizers muaj qee qhov kev ua qias tuaj ib puag ncig, thaum polycarboxylate superplasticizers yog tsim los siv cov txheej txheem ntsuab ntsuab ntsuab. Lawv pab txuag cov cement, txhim kho pob zeb ua haujlwm, thiab txhawb kev txhim kho kom ruaj khov ntawm cov pob zeb ntsuab thiab cov pa roj carbon tsawg.

Hauv cov ntsiab lus, polycarboxylate superplasticizers zoo dua li naphthalene-based superplasticizers. Polycarboxylate superplasticizers sawv cev rau yav tom ntej qauv hauv kev loj hlob ntawm superplasticizers.