Dab tsi yog cov txiaj ntsig ntawm polycarboxylic acid superplasticizers?

Dab tsi yog cov txiaj ntsig ntawm polycarboxylic acid superplasticizers?

Cov tshuaj muaj pes tsawg leeg txiav txim siab lawv cov khoom zoo heev.

Cov txiaj ntsig ntawm polycarboxylic acid superplasticizers yog txuas rau cov hom kev xaiv polymer monomers thiab muaj pes tsawg leeg ntawm cov saw ib ntus. Cov polymer electrolytes, npaj los ntawm cov dawb radical tov polymerization, tuaj yeem ua tiav qhov cuam tshuam loj heev ntawm qhov ntau npaum li cas ({{0}}.1% mus rau 0.2%), thiab ua kom pom kev zoo heev, txhim kho lub zog thaum ntxov, lossis txo qis qis. teebmeem. Cov ethoxy saw segments ntawm polymer sab chains, qee zaum hu ua graft chains, ua lub luag haujlwm tseem ceeb tsis yog hauv kev cuam tshuam cov dej txo qis tab sis kuj tseem cuam tshuam kev poob qis.

Polycarboxylic acid-raws li superplasticizers adsorb tsawg dua ntawm cov cement particle nto tab sis, vim lawv ntau sab chains, lawv tuaj yeem tsim qhov cuam tshuam tsis zoo. Yog li, txawm tias tsawg npaum li cas, lawv tuaj yeem ua tiav kev tswj dej kom zoo. Lub xub ntiag ntawm sab chains tso cai rau adsorption nyob rau hauv ib tug zoo li comb yam, ua rau nws nyuaj rau thawj cement hydration khoom los npog cov dej reducer molecule adsorption txheej. Yog li ntawd, cov superplasticizers muaj cov yam ntxwv ntawm qhov tsawg npaum li cas, zoo slump tuav, thiab zoo heev adaptability nrog cement particle nto, ua rau lawv nyiam xaiv rau kev npaj cov dej-rau-cement ratio, high-strength, thiab ruaj khov pob zeb.

High Water Reduction thiab Plasticizing Performance

Dab tsi yog cov txiaj ntsig ntawm polycarboxylic acid superplasticizers? Lawv yog cov nyiam admixture rau kev npaj tus kheej-compacting thiab high-performance pob zeb tsis muaj kev vibration. Lawv txhim kho pob zeb ua tau zoo nyob rau hauv kev sib txawv ntawm cov qauv tsim, tswj kev ua haujlwm thiab cov dej ntws siab thaum txo cov dej-rau-cement piv. Nyob rau hauv tib qhov dej-rau-cement piv thiab cov dej txo qhov ntau npaum li cas, polycarboxylic acid superplasticizers piv rau naphthalene-based high-efficiency water reducers nthuav tawm cov yam ntxwv zoo dua nrog cov cement, txhim kho cov flowability ntawm cov cement pastes. Nyob rau hauv ntau npaum li cas, qhov flowability ntawm cov cement pastes ntau tshaj 250 hli tom qab 1 teev, nrog ntws poob ntawm kwv yees li 10% los yog tsawg dua nyob rau hauv 1 teev, ua tau zoo heev plasticizing zog.

Teeb meem nrog Superdosage ntawm Polycarboxylic Acid Superplasticizers

Vim lawv cov dej txo qis thiab cov yam ntxwv tsis tshua muaj, thaum npaj cov pob zeb ua ke nrog polycarboxylic acid superplasticizers, nws yog ib qho tseem ceeb kom ua raws li qhov ntsuas qhov tsawg kawg nkaus thiab cov ntsiab lus dej tau txiav txim siab los ntawm kev sim sib xyaw. Precision thiab rhiab heev hauv cov cuab yeej ntsuas thiab ntsuas qhov tseeb yog qhov tseem ceeb. Txwv tsis pub, superdosage ntawm polycarboxylic acid superplasticizers tuaj yeem ua rau muaj kev sib cais, los ntshav, lossis cov ntsiab lus huab cua ntau dhau. Ib qho kev txo qis hauv kev ntws ntawm cov cement pastes ntawm ib qho kev noj ntawm polycarboxylic acid superplasticizers qhia txog kev txwv rau lawv cov dej txo cov txiaj ntsig. Tshaj qhov kev txwv no txo ​​cov cement flowability thiab txo cov dej txo cov teebmeem.