Vim li cas thiaj yuav tsum ua kom cov dej txo qis?

Dej reducer yog ib tug admixture siv nyob rau hauv qhob uas txo tus nqi ntawm cov dej sib xyaw thaum tswj cov pob zeb ua ke tsis tau hloov pauv. Nws disperses cement rau, txhim kho kev ua haujlwm, txo cov dej siv, thiab txhim kho cov dej ntawm cov pob zeb sib xyaw. Xwb, nws txo cov nyiaj ntawm cov xis mas siv, txuag cov cement.

2. Kev cais tawm ntawm Dej Reducer

Dej Reducers tuaj yeem raug cais raws li lawv qhov kev ua tau zoo rau cov dej reducers, high-efficiency dej reducers, thiab kev ua haujlwm dej siab thiab kev ua haujlwm siab ua haujlwm.

Dog dig reducer: Hom dej Reducer txo cov ntsiab lus dej los ntawm tsis muaj tsawg tshaj li 8% raws li cov xwm txheej uas ua pob zeb uas tsis hloov.

High-efficiency dej reducer: Hom no txo ​​cov ntsiab lus dej los ntawm tsis muaj tsawg tshaj li 14% raws li cov xwm txheej uas cov pob zeb ua pob zeb tsis hloov pauv.

Kev ua haujlwm siab dej reducer: Cov hom no txo ​​cov ntsiab lus dej los ntawm tsis muaj tsawg dua 25% nyob rau hauv tib qho poob. Piv rau cov dej ntws loj-efficiency reducers, nws muab cov swb qis dua, txo qis kom qhuav shrinkage, thiab tej yam cua-entraining cov khoom.

Vim tias cov dej uas muaj peev xwm tseem ceeb ntawm cov dej khov kho rau kev hloov pauv ntawm pob zeb ua kev txhim kho, raws li cov pob zeb ua haujlwm thiab ua pob zeb ua ke. Qhov kev nce qib no ua kom muaj kev siv ua vaj tse los ntawm phau ntawv lossis kev ua haujlwm zoo, thiab ua rau muaj kev ua haujlwm zoo, thiab ua rau muaj kev ua haujlwm tseem ceeb, thiab ua rau muaj kev sib tw tseem ceeb, thiab ua rau muaj kev sib tw tseem ceeb, thiab ua rau muaj kev sib tw ua kom zoo dua qub thiab cov qauv siv.

3. Mechanisms ntawm kev ua ntawm dej reducers

Dispersion nyhuv

Thaum cov hmoov av yog tov nrog dej, cov qauv flocculent, thiab 10% ntawm cov dej sib xyaw ua ke thiab ntub, uas cuam tshuam rau kev ua haujlwm ntawm cov pob zeb ua ke. Thaum lub taub dej txo tau ntxiv, nws cov molecules tuaj yeem ua kom pom cov khoom noj kom zoo ib yam (feem ntau yog tus nqi tsis zoo uas ua rau muaj kev hloov pauv tsis zoo rau kev tawg. Qhov no tawg cov qauv flocculent, tso cov dej uas tau tso rau hauv qhov khiav, yog li nce qhov ua haujlwm ntawm cov qhob sib xyaw.

Lubrication nyhuv

Cov pab pawg hydrophilic hauv cov reducer muaj zog polarity, thiab cov dej reducer adsorbed ntawm cov hmoov av cov dej ua yeeb yaj kiab nrog cov dej lwg me me. Cov yeeb yaj kiab dej no tau muab lubrication zoo tshaj plaws, ua rau muaj lub zawv zawg ua haujlwm ntawm Caas hais tawm, txhim kho kom zoo ntxiv txog cov qhob.

Storyer cuam tshuam nyhav

Dej Reducers, tshwj xeeb yog cov uas muaj cov saw hlau, txuas ntxiv mus rau cov txheej txheem aqueous thiab tsim cov txheej hydrophilic adsorption txheej ntawm cov Maas paltle nto. Thaum cov Maas hais tawm ntawm ib leeg, cov adsorption pascers pib sib tshooj, tsim cov qauv staper thaiv ntawm cov khoom. Qhov ntau dua qhov sib tshooj, ntau dua tus steeter yuam kev yuam kev, uas cuam tshuam ntawm kev sib koom ua ke ntawm cov paj tsib thiab pab tswj hwm cov pob zeb hauv qab.

Kev Tso Tawm Tso Tawm Ntawm Cov Phooj Ywg

TSHIAB HOM DEJ REDUCERS, xws li cov dej polycarboxylate-based-based tso tawm mus rau hauv lub latecule thaum lub sijhawm npaj. Cov saw txuas no tsis tsuas yog muab cov ntawv sib koom ua ke hauv qab, yog li kev txhim kho polcariny, Li tshem tawm cov kev hloov pauv ntawm kev rho tawm ntawm kev rho tawm cov nyhuv thiab tswj cov poob qis.