Kev siv tshuaj khib tus kheej (SLM) yog cov cement-raws cug dav dav hauv cov ntawv thov sab hauv tsev thiab sab nraum zoov. SLM muaj cov cuab yeej tshwj xeeb ntawm kev kis tau thiab theem nws tus kheej, tshem tawm cov kev xav tau kev pab kom du lossis smoothing. Qhov no ua rau nws xaiv lub sijhawm uas tsis tshua muaj zog rau cov phiaj xwm av loj. Txawm li cas los xij, cov kev ua si ib txwm muaj feem ntau los ua kom tawg, shrinkage, thiab curling. Txhawm rau daws cov teeb meem no, redispersible looj hmoov (RDP) tau qhia ua kev ntxiv rau SLM. RDP yog cov hmoov polymer yog siv los txhim kho kev ua haujlwm, lub zog thiab kav cov ntaub ntawv hauv tsev.
Cov khoom ntawm redispersible looj hmoov
RDP yog dej-soluble polymer hmoov tau txais los ntawm cov tshuaj tsuag kom qhuav an aqueous emulsion ntawm ib tug copolymer ntawm vinyl acetate thiab ethylene. RDP feem ntau yog muab khoom dawb los yog cov hmoov dawb dawb. Cov khoom tseem ceeb ntawm RDP suav nrog:
1. Muaj zog ua kom muaj zog: RDP muaj zoo bonding lub zog rau feem ntau substrates ntau, suav nrog pob zeb, thiab hlau.
2. Cov dej zoo tsis kam: RDP yog cov dej tiv taus thiab yog qhov haum rau kev siv hauv cov dej noo.
3. Txhim kho qhov yooj yim heev: RDP tuaj yeem txhim kho qhov hloov tau ntawm cov khoom kawg, ua rau nws tsis tshua muaj kev tawg thiab curling.
4. Txhim Kho Kev Ua Haujlwm: RDP tuaj yeem txhim kho kev ua haujlwm ntawm SLM, ua rau nws tau yooj yim dua ncuav thiab kis.
5. Lub zog siab heev: RDP tuaj yeem txhim kho lub durability ntawm cov khoom kawg, ua rau nws tsis tshua muaj hnav thiab rhuav.
Daim ntawv thov ntawm RDP hauv SLM
RDP tuaj yeem raug ntxiv rau SLM txhawm rau txhim kho nws cov kev ua tau zoo. Txoj kev RDP ntxiv rau SLM tuaj yeem muaj kev cuam tshuam tseem ceeb ntawm cov khoom kawg. Feem ntau, cov kev pom zoo muab ntawm RDP ntxiv rau SLP ntxiv rau SLM yog 0.3% rau 3.0% los ntawm qhov hnyav ntawm cov cement. Qhov sib ntxiv ntawm RDP tuaj yeem txhim kho lub incordability, lub zog thiab durability ntawm SLM. Nov yog qee qhov kev siv ntawm RDP hauv SLM:
1. Txhim kho kev ua haujlwm: qhov sib ntxiv ntawm RDP tuaj yeem txhim kho kev ua haujlwm ntawm SLM, ua rau nws tau yooj yim dua ncuav thiab kis. Qhov no txo txoj kev pheej hmoo ntawm kev tawg thiab curling thaum thov. Tsis tas li ntawd, RDP tuaj yeem nce cov kua ntawm SM, pab nws rau qib kawm yooj yim dua.
2. Txhim Kho Lub Zog: RDP tuaj yeem txhim kho lub zog sib raug zoo ntawm SLM. Qhov no pab txo qhov kev pheej hmoo ntawm kev debond lossis delamination. Txhim kho txoj kev sib raug zoo kuj tseem txhim kho cov qauv kev ncaj ncees ntawm cov flooring system.
3. Kev hloov pauv tau ntxiv: RDP tuaj yeem nce qhov hloov tau ntawm SLM yooj yim, ua rau nws tsis tshua muaj kev tawg thiab curling. Qhov no nce lub durability ntawm cov khoom kawg.
4. Cov dej tsis kam zoo dua: RDP tuaj yeem txhim kho cov dej tsis kam ntawm SM. Qhov no pab tiv thaiv lub hauv paus ntawm noo noo kev puas tsuaj.
5. Txhim kho Durability: RDP tuaj yeem txhim kho lub durability ntawm sm, ua rau nws tsis tshua yuav hnav thiab rhuav. Qhov no tuaj yeem txuas ntxiv lub neej ntawm koj cov flooring system.
Daim ntawv thov ntawm redispersible looj hmoov hauv caas-bas raws tus kheej txoj kab cleession steeling leveling tus qauv muaj txiaj ntsig zoo. RDP tuaj yeem txhim kho lub incordability, lub zog, thiab durability ntawm SM. Cov txiaj ntsig tseem ceeb ntawm kev siv RDP suav nrog kev sib koom tes ua kom muaj zog, nce ntxiv, thiab ua kom zoo dua qub. Nws cov nyiaj ua haujlwm siab, cov dej tsis zoo, txhim kho kev ua haujlwm tau zoo, ua rau nws muaj txiaj ntsig zoo ntxiv rau ntau txoj haujlwm kev tsim kho. Raws li qhov kev thov rau cov chaw ua haujlwm zoo thiab ruaj khov ntxiv, kev siv RDP hauv SLM yog feem ntau yuav loj hlob hauv cov npe nrov.
Lub Sijhawm Post: Feb-19-2025