Cement additives hydroxyethyl cellulose

Hydroxyethyl cellulose (HEC) yog ib qho cellulose ether uas feem ntau siv los ua cov cement additive hauv kev tsim kho kev lag luam. Nws yog cov dej-soluble polymer uas yog muab los ntawm ntuj cellulose thiab hloov kho los ntawm cov txheej txheem tshuaj los txhim kho nws cov kev ua tau zoo.

HEC feem ntau yog siv rau hauv cov khoom siv cement los txhim kho lawv cov kev ua haujlwm, lub zog, thiab kav ntev. Hauv tsab xov xwm no, peb yuav tham txog ntau yam txiaj ntsig ntawm kev siv HEC ua cov cement additive thiab yuav ua li cas nws tuaj yeem txhim kho cov khoom ntawm cov khoom siv cement.

Kev Txhim Kho Kev Ua Haujlwm Ib qho ntawm cov txiaj ntsig tseem ceeb ntawm kev siv HEC ua cov cement additive yog tias nws tuaj yeem txhim kho kev ua haujlwm ntawm cov khoom siv cement. HEC tuaj yeem ua raws li cov thickener thiab rheology hloov kho, uas tuaj yeem pab txo qis viscosity ntawm cov cement sib tov thiab txhim kho nws cov khoom ntws.

Thaum HEC ntxiv rau cov khoom siv cement, nws tuaj yeem txhim kho kev sib kis ntawm qhov sib tov thiab ua kom yooj yim rau kev thov. Qhov no tuaj yeem pab txo qis cov dej uas yuav tsum tau ua kom tau raws li qhov xav tau, uas tuaj yeem txhim kho tag nrho lub zog thiab kav ntev ntawm cov cement.

Kev tuav dej Lwm qhov txiaj ntsig ntawm kev siv HEC ua cov cement additive yog tias nws tuaj yeem txhim kho cov dej tuav cov khoom ntawm cov khoom siv cement. HEC tuaj yeem ua raws li cov yeeb yaj kiab-yav dhau los, uas tuaj yeem pab tsim kom muaj qhov thaiv kom tsis txhob muaj dej ntws tawm sai heev los ntawm kev sib tov.

Qhov no tuaj yeem pab txhim kho cov txheej txheem kho ntawm cov cement thiab xyuas kom nws ncav cuag nws lub peev xwm tag nrho. Tsis tas li ntawd, kev txhim kho dej tuav kuj tseem tuaj yeem pab txo qis kev pheej hmoo ntawm kev tawg thiab shrinkage nyob rau hauv cov ntaub ntawv cement-based, uas tuaj yeem txhim kho lawv tag nrho cov kav ntev thiab ntev.

Txhim kho Adhesion HEC tuaj yeem txhim kho cov khoom adhesion ntawm cov khoom siv cement. Thaum HEC ntxiv rau qhov sib tov, nws tuaj yeem pab tsim kom muaj kev sib koom ua ke ntau dua thiab ruaj khov uas tuaj yeem sib raug zoo nrog rau qhov chaw nws tau siv rau.

Qhov no tuaj yeem txhim kho tag nrho lub zog thiab ua haujlwm ntev ntawm cov khoom siv cement thiab txo qhov kev pheej hmoo ntawm delamination lossis detachment dhau sijhawm. Kev txhim kho adhesion kuj tseem tuaj yeem pab txo qis kev txij nkawm thiab kev kho kom zoo rau cov khoom siv cement, uas tuaj yeem yog qhov txiaj ntsig zoo rau kev tsim kho kev lag luam.

Ua kom muaj zog ntxiv Los ntawm kev txhim kho kev ua haujlwm, kev tuav dej, thiab cov khoom sib txuas ntawm cov khoom siv cement, HEC tuaj yeem pab ua kom lawv lub zog tag nrho. Cement-raws li cov ntaub ntawv uas tau txhim kho nrog HEC tuaj yeem muaj lub neej ua haujlwm ntev dua thiab xav tau kev saib xyuas thiab kho tsawg dua lub sijhawm.

Tsis tas li ntawd, HEC tseem tuaj yeem txhim kho qhov kev tiv thaiv ntawm cov khoom siv cement-based rau ntau yam ib puag ncig, xws li huab cua, khov-thaw mus, thiab raug tshuaj lom neeg. Qhov no tuaj yeem ua rau lawv tsim nyog rau kev siv nyob rau hauv ib puag ncig hnyav thiab txhim kho lawv cov kev ua tau zoo thiab kev ua haujlwm ntev.

Xaus HEC yog ntau yam thiab siv tau zoo cement additive uas tuaj yeem txhim kho kev ua tau zoo ntawm cov khoom siv cement. Nws muaj peev xwm txhim kho kev ua haujlwm, dej tuav, adhesion, thiab durability ua rau nws muaj txiaj ntsig zoo rau kev tsim kho kev lag luam.

Yog tias koj txaus siab siv HEC ua cov cement additive, nws yog ib qho tseem ceeb uas yuav tau ua hauj lwm nrog tus neeg muag khoom muaj koob npe los xyuas kom meej tias koj tau txais cov khoom zoo uas ua tau raws li koj cov kev xav tau tshwj xeeb thiab cov kev xav tau. Kima Chemical yog cov chaw tsim khoom thiab cov chaw muag khoom ntawm cov khoom siv cellulose ether, suav nrog HEC, thiab lawv muab ntau yam ntawm cov qib thiab cov lus qhia tshwj xeeb kom tau raws li ntau yam kev xav tau ntawm kev tsim kho kev lag luam.