VAE Redispersible Latex Powder

Basic muaj nuj nqis:

RDP Powder yog cov hmoov dawb los yog dawb dej-soluble kua hmoov uas ua los ntawm cov tshuaj tsuag kom qhuav dej tshwj xeeb emulsion.

RDP hmoov ua ib zaj duab xis tom qab dispersion thiab ua raws li ib tug thib ob nplaum.Tnws tiv thaiv colloid yog absorbed los ntawm lub mortar system (nws yuav tsis raug puas tsuaj los ntawm dej tom qab cov zaj duab xis yog tsim, los yog "secondary dispersion")..TNws yog tsim los ua cov ntaub ntawv polymerasa reinforcing cov ntaub ntawv, nws yog faib nyob rau hauv tag nrho cov mortar system, yog li ua kom lub cohesion, tnws compressive zog thiab flexural zog ntawm lub mortar.

Qhov ntxiv ntawmRDP hmoov rau lub elongation ntawm lub mortar txhim kho qhov cuam tshuam toughness ntawm lub mortar, thiab tseem muab lub mortar ib tug zoo kev nyuaj siab dispersion nyhuv.Cov txheej txheem kev sib txuas yog nyob ntawm qhov adsorption thiab diffusion ntawm macro molecules ntawm cov nplaum nplaum.

Nyob rau tib lub sijhawm, lubRDP muaj ib tug tej yam degree ntawm permeability.Ua ke nrog cov cellulose ether, nws tag nrho infiltrates saum npoo ntawm cov khoom siv hauv paus, kom lub hauv paus txheej thiab qhov chaw ntawm cov plaster tshiab nyob ze rau ntawm qhov kev ua tau zoo, yog li adsorbing Nws cov kev ua tau zoo heev.Txo cov elastic modulus thiabdeform-muaj peev xwm ntawm lub mortar, thiab txo cov cracking.

Lub abrasion tsis kam ntawm mortar:

Lub abrasion tsis kam yog feem ntau yog vim muaj qee yam ntawm cov kua nplaum rau ntawm qhov chaw ntawm lub mortar.Cov roj hmab hmoov ua haujlwm ua tus neeg sawv cev sib txuas.Cov qauv mesh tsim los ntawm cov hmoov roj hmab tuaj yeem dhau los ntawm qhov thiab cov kab nrib pleb hauv cov cement mortar.Txhim kho qhov kev sib txuas ntawm cov khoom siv hauv paus thiab cov khoom siv cement hydration, yog li txhim kho qhov kev puas tsuaj.Muab mortar zoo heev alkali tsis kam.

Lub luag haujlwm ntawmRDP hmoov nyob rau hauv putty, mortar thiab pobzeb kua nplaum:

Sab hauv thiab sab nrauv phab ntsa putty hmoov, pobzeb nplaum, pobzeb sib koom tus neeg sawv cev, cov hmoov qhuav interface tus neeg saib xyuas, sab nrauv phab ntsa sab nraud thermal rwb thaiv tsev mortar, tus kheej-leveling mortar, kho mortar, hniav mortar, waterproof mortar thiab lwm thermal rwb thaiv tsev qhuav-siv mortar.It yog los txhim kho lub brittleness thiab siab elastic modulus ntawm cov tsoos cement mortar, thiab muab cov cement mortar zoo dua thiab tensile bonding lub zog los tiv thaiv thiab ncua lub tiam ntawm cement mortar tawg.Vim hais tias cov polymer thiab mortar tsim ib tug interpenetrating network qauv, ib tug nruam polymer zaj duab xis yog tsim nyob rau hauv lub pores, uas ntxiv dag zog rau cov kev sib raug zoo ntawm cov aggregates thiab blocks ib co ntawm cov pores nyob rau hauv lub mortar.Yog li ntawd, lub hardened modified mortar muaj kev ua tau zoo dua li cov cement mortar.Muaj kev txhim kho zoo heev.

Lub luag haujlwm ntawmRDP hmoov nyob rau hauv putty yog feem ntau nyob rau hauv cov nram qab no yam:

1. Adhesion thiab mechanical zog ntawm putty.RDPyog cov hmoov binder ua los ntawm ib qho tshwj xeeb emulsion (siab molecular polymer) txau-qhuav.Cov hmoov no tuaj yeem ua tau sairov tawg mus rau hauv ib qho emulsion tom qab nyob rau hauv kev sib cuag nrog dej, thiab muaj tib yam khoom raws li cov thawj emulsion, uas yog, ib tug zaj duab xis yuav tsim tau tom qab cov dej evaporates.Cov yeeb yaj kiab no muaj kev hloov pauv siab, huab cua ua haujlwm siab thiab ua haujlwm rau ntau yam High adhesion rau substrate.Tsis tas li ntawd, cov dej-repellent latex hmoov tuaj yeem ua rau cov mortar muaj cov dej tsis zoo.

2. Lub cohesion ntawm putty, zoo heev kuj, alkali tsis kam, puas kuj, thiab txhim khu flexural zog.

3. Waterproof thiab permeability ntawm putty.

4. Kev tuav dej ntawm putty, nce lub sijhawm qhib, thiab ua haujlwm tau zoo.

5. Kev cuam tshuam tsis kam ntawm putty thiab txhim kho durability ntawm putty.

Lub luag haujlwm ntawmRDP hmoov nyob rau hauv mortar feem ntau yog nyob rau hauv cov nram qab no yam:

1. Compressive zog thiab flexural zog ntawm mortar.

2. Qhov sib ntxiv ntawm cov hmoov latex rau lub elongation ntawm lub mortar txhim kho qhov cuam tshuam toughness ntawm mortar thiab kuj muab cov mortar zoo rau kev ntxhov siab dispersion nyhuv.

3. Qhov kev sib txuas ntawm cov mortar tau txhim kho.Cov txheej txheem kev sib txuas yog nyob ntawm qhov adsorption thiab diffusion ntawmmacro molecules ntawm qhov nplaum nplaum.Nyob rau tib lub sij hawm, cov roj hmab hmoov muaj ib qho degree ntawm permeability.Ua ke nrog cov cellulose ether, nws tag nrho infiltrates saum npoo ntawm cov khoom siv hauv paus, kom lub hauv paus txheej thiab qhov chaw ntawm cov plaster tshiab nyob ze rau ntawm qhov kev ua tau zoo, yog li adsorbing Nws cov kev ua tau zoo heev.

4. Txo cov elastic modulus thiabdeform-muaj peev xwm ntawm mortar thiab txo cracking.

5. Hnav tsis kam ntawm mortar.Lub abrasion tsis kam yog feem ntau yog vim muaj qee yam ntawm cov kua nplaum rau ntawm qhov chaw ntawm lub mortar.Cov roj hmab hmoov ua haujlwm ua tus neeg sawv cev sib txuas.Cov qauv mesh tsim los ntawm cov hmoov roj hmab tuaj yeem dhau los ntawm qhov thiab cov kab nrib pleb hauv cov cement mortar.Txhim kho qhov kev sib txuas ntawm cov khoom siv hauv paus thiab cov khoom siv cement hydration, yog li txhim kho qhov kev puas tsuaj.

6. Muab cov mortar zoo heev alkali tsis kam.