Lub tshuab ntaub ntawv uas tuaj yeem muab qhuas dua rau hauv lub tshuab ntaub ntawv rau cov ntawv tshuab

Redispersible Polymer Powder Dosage Requirements by EN 12004 Classification

C1 vs C2 Standards: Minimum RDP Content and Performance Thresholds

Lub tsev kawm ntawv EN 12004 qhia txog cov qhov chaw sib thaj uas muaj peb lub tsev kawm ntawv rau cov adhesive rau lub tsev kawm ntawv cement, thiab lub adhesive rau lub tsev kawm ntawv polymer (RDP) yog qhov tseem ceeb uas txheeb xyuas qhov chaw sib thaj. Cov adhesive C1—uas muaj qhov chaw sib thaj zoo—yog xav tau RDP nyob rau hauv 2–3% ntawm lub cement los ntawm lub weight kom tau qhov chaw sib thaj ntawm tensile adhesion strength tsis txhob ntev rau 0.5 N/mm² tom qab ua raws li cov kev txheeb xyuas. Cov adhesive C2 uas zoo dua yuav tsum muaj RDP nyob rau hauv 4–6% kom tau qhov chaw sib thaj ntawm tensile adhesion strength tsis txhob ntev rau 1.0 N/mm², thiab muaj qhov chaw sib thaj zoo dua rau open time thiab resistance rau dej. Lub tshuab hauv qab no qhia txog qhov sib piv ntawm RDP dosage thiab qhov chaw sib thaj:

Tus ntaub ntawv tshaj tawm los ntawm qhov tseem ceeb tshaj plaws uas tsim cov khoom siv polymer xav tau hais tias, thaum siv 3% RDP rau hauv mortar, nws yuav pab paug qhov kev nyha tawm ntawm cov khoom siv (2023). Thaum siv ntxiv 1% RDP, qhov kev nyha tawm yuav pab paug 0.15–0.2 N/mm²—vim li no, 4% yog qhov tshwj xeeb tshaj plaws uas yuav tsum siv rau kom muaj kev sib tw thiab kev sib piv raws li lub cev C2. Cov neeg tsim khoom kuj yuav tsum xyuam xim txog qhov ntev ntawm cement thiab qhov sib kis ntawm cov khoom siv; cov cement uas ntev dua yuav tsum siv ntau dua rau hauv qhov tshwj xeeb uas tau muab qhia kom paug qhov kev nyha tawm thiab kom muaj kev ua cov film zoo tshaj plaws.

Yam li cas RDP dosage pab paug kev sib tw thiab kev sib piv ntawm cov adhesive classes

Kev siv RDP tsis yog qhov tshuaj uas yuav tsum siv los ntawm kev txiav txim siab “thov” lossis “tsis thov”—nws muaj kev nyuaj rau qhov kev txiav txim siab rau EN 12004 cov npe lwm. Qhov kev hloov los ntawm C1 mus rau C2 yog nyob rau hauv qhov polymer tuaj yeem tsim qhov film uas muaj kev nyuaj thiab tuaj yeem khaub ncua cov khoom tshuaj uas muaj kev nyuaj. Thaum siv 4%, cov adhesive tuaj yeem txiav txim siab tias tau txais qhov kev nyuaj rau C2; kom tau qhov kev nyuaj S1 (≥2.5 mm rau qhov kev nyuaj ntawm qhov kev nyuaj) lossis S2 (≥5 mm) yuav tsum siv 6–8% RDP—tshwj xeeb yog siv rau cov polymer uas muaj kev nyuaj zoo dua. Nws pab ua kom tau qhov kev nyuaj rau cov tile uas loj, cov khoom siv rau hauv qhov chaw ua haujlwm, lossis rau qhov npe ntawm qhov chaw. Ib qho kev xyuas ntawm 2022 pom tias thaum siv RDP los ntawm 3% mus rau 5% nws tau txais qhov kev nyuaj rau C2 thiab ua yuav ua rau lub sijhawm uas muaj ntau dua li 40% thiab lub kawg ntawm qhov tshuab nyob hauv dej muaj ntau dua li 55%, uas pab tshuab tau qhov zoo heev tsis muaj kev txiav txim rau lub cement tshuab. Tsis tas li ntawd, nyob rau hauv C2, cov kev txiav txim leej twg (xws li muab los ntawm 4.5% mus rau 5.5%) yuav muaj kev cuam tshuam rau qhov tshuab tau rau cov kev xav tau thiab pab tshuab tau qhov zoo heev rau kev tswj hwm cov kev cuam tshuam ntawm lub tebchaws. Vim li no, lub RDP dosage yog qhov tseem ceeb rau kev tswj hwm thiab qhov tseem ceeb rau kev tshuab tau qhov zoo heev.

Kev cuam tshuam ntawm lub RDP dosage rau qhov tshuab

Lub RDP dosage yog qhov tseem ceeb rau kev tshuab tau qhov tshuab ntawm lub zog, kev siv, thiab kev nyab xaiv thaum sijhawm ntev—cov kev txiav txim leej twg rau lub weight percent yuav muaj kev cuam tshuam rau cov kev xav tau. Cov lus hauv qab no yog qhov tshuab tau rau cov kev cuam tshuam thiab cov kev npaj tshuab rau cov kev siv ntawm lub RDP.

Qhov tshuab ntawm lub adhesion thiab lub flexibility: Cov kev tshuab tau rau 2–6% RDP loading

Nyob rau hauv 2–3% RDP, cov adhesive C1 yooj yim tau kev nyuaj siab ntawm 0.5–0.8 MPa tom qab siv dej—sib npog rau lub tshuab EN 12004. Yog tso ntau dua rau hauv 4–6%, ces yuav muaj kev ntxiv siab ntawm kev nyuaj siab 45–55% los ntawm cov mortar tsis muaj polymer, uas tseem tshwm sim ntau dua 1.0 MPa (European Adhesive Performance Survey 2023). Kev yuav tshwm sim ntau dua: kev khaub ncaws ntawm qhov txhiaj yuav ntxiv los ntawm <1.0 mm rau hauv cov mortar tsis muaj polymer mus rau ≥2.5 mm nyob rau hauv 6% RDP, uas pab txhiaj kom muaj kev yuav tshwm sim thiab kev cuam tshuam ntawm dej thiab hluav taws xob tsis tau muaj kev khaub ncaws. Cov polymer film uas tau tshuab yuav pab khaws cov khaub ncaws leej twg thiab tso kev nyuaj siab rau hauv qhov chaw, uas pab ntxiv kev nyuaj siab ntawm qhov chaw. Tiamsi, kev ntxiv yuav tsis ntau dua thaum nyob rau hauv 6%—kev ntxiv yuav tsis ntau dua, tab sis kev ntxiv nqi thiab kev yuav tshwm sim yuav ntxiv dua. Rau cov formulation C2S1 lossis C2S2, kev tshwmsim zoo tshaj plaws nyob rau hauv 4–6% yuav pab tshwmsim kev nyuaj siab ntawm qhov txhiaj, kev nyuaj siab ntawm qhov txhiaj thiab kev yuav tshwm sim tsis tau ua ntau dua.

Kev nyuaj siab rau dej, lub sijhawm uas tuaj yeem siv, thiab kev yuav tshwm sim thiab kev tshwmsim nyob rau hauv lub sijhawm tshwj xeeb

Kev siv RDP yuav pab tshaj plaws rau kev khaub ncawg hauv dej thiab pab tshaj plaws lub sijhawm uas koj tuaj yeem muab cov khoom sib npaug los ntawm qhov chaw sib npaug—tab sis cov kev pab no tsis tuaj yeem nyob hauv qhov chaw uas muaj kev cuam tshuam. Thaum siv 3–4%, cov khoom sib npaug uas muaj polymer yuav pab tshaj plaws kev daws dej hauv qhov ntsiab ntawm cov khoom sib npaug uas muaj cement los ntawm 60% (2022 Building Adhesives Durability Study), thiab pab tshaj plaws kev nyab xeeb ntawm kev sib npaug hauv qhov chaw uas muaj dej. Lub sijhawm uas koj tuaj yeem muab cov khoom sib npaug los ntawm qhov chaw sib npaug yuav pab tshaj plaws los ntawm ~10 feeb thaum siv 2% RDP mus rau 20–30 feeb thaum siv 5%, vim tias cov khoom sib npaug yuav pab tshaj plaws kev sov ntawm qhov pob thiab pab tshaj plaws kev nyab xeeb. Tab sis kev siv tau yuav pab tshaj plaws thaum siv ntau dua 6%: kev nyab xeeb ntau dua yuav pab tshaj plaws kev tso cov khoom sib npaug los ntawm qhov pob thiab pab tshaj plaws kev sib npaug hauv qhov chaw sib npaug—especially critical in floor installations requiring rapid, consistent application. Yog li ntawd, 4–5% RDP yog qhov tseem ceeb uas pab tshaj plaws kev khaub ncawg hauv dej thiab pab tshaj plaws lub sijhawm uas koj tuaj yeem muab cov khoom sib npaug los ntawm qhov chaw sib npaug, tab sis tsis pab tshaj plaws kev siv tau ntawm cov neeg siv khoom.

Kev pab tshaj plaws RDP uas muaj kev sib npaug rau qhov chaw sib npaug

Tshuab thiab kab tshuab porcelain: Qhia ntau dua RDP rau kev nyab xeeb ntawm qhov chaw sib sau thiab kev faib qhov load

Tshuab thiab kab tshuab porcelain ua rau qhov stress sib sau hloov ntau dua vim tias lawv muaj qhov porosity tsis zoo, qhov rigidity siab, thiab qhov thermal expansion siab dua. Cov mortar tshwj xeeb yuav tsis tuaj yeem rau no—tsis muaj qhov flexibility thiab wet adhesion txaus. Yog tias txo RDP mus rau 4–6% ntawm qhov weight ntawm cement ces yuav pab tshem qhov teeb meem no. Cov kev test tau qhia tias muaj 30–40% ntau dua tensile adhesion rau kab tshuab porcelain thiab muaj 3x ntau dua transverse deformation thaum muaj 5% dosage. Qhov polymer film uas muaj los faib qhov shear stress raws, tshem qhov edge-lifting thiab hollow spots, thiab tso cai rau kev nyab xeeb ntawm kev sib sau thaum muaj moisture thiab thermal cycling—qee yam tseem ceeb rau cov tshuab thiab kab tshuab uas muaj ntev ntau dua 60 cm rau txhua sab.

Cov luj xwm ntawm substrate thiab climate: Tshem tshaj RDP rau concrete, plasterboard, lossis qhov chaw uas muaj humidity siab

Kev ntsuas qhov tshuaj noj thiab qhov xwm txheej hauv qhov chaw yuav tsum muaj kev hloov qhov ntsuas. Cov ntawv concrete—tshwj xeeb yog cov uas muaj kev ntsuas ntxiv rau hauv—yog tau txais los ntawm ≥4% RDP kom pab tshem tawm cov kab laus li cas thiab tso cai rau kev nyha tshaj plaws. Rau cov ntawv plasterboard uas muaj qhov ntsuas ntau thiab tsis ntau, 2–3% yog sib npaug rau cov ntawv standard, tab sis rau cov ntawv loj dua yuav tsum muaj ≥4% kom muaj kev nyha tshaj plaws. Rau cov qhov chaw uas muaj kev ntsuas ntau—piv txwv li cov qhov chaw ua haujlwm, cov qhov chaw ua haujlwm ntawm lub tshuab, thiab cov qhov chaw hauv tsev—kev tswj kev ntsuas yog qhov tseem ceeb tshaj plaws. Kev ntsuas RDP mus rau 4–5% yuav ua rau muaj kev nyha tshaj plaws uas tsis pub kev ntsuas mus rau hauv thiab tso cai rau kev nyha tshaj plaws tom qab muaj kev ntsuas ntau. Cov adhesive uas muaj 5% RDP tau txais >80% ntawm kev nyha tshaj plaws thaum kawg tom qab 28 hnub muaj kev ntsuas, thaum 2% RDP yog <50%. Kev xaiv qhov ntsuas uas sib npaug rau cov ntawv thiab qhov xwm txheej yuav pab tshem tawm kev nyha tshaj plaws, tso cai rau kev nyha tshaj plaws, thiab pab tshem tawm kev nyha tshaj plaws.

Cov kev ua haujlwm zoo tshaj plaws thiab cov qhov teeb meem tshaj plaws uas muaj nyob rau hauv kev xaiv qhov ntsuas RDP

Kuam paub ua haujlwm zoo tshaj plaws nrog cov pov tseg polymer (RDP) yuav tsum muaj kev siv thiab kev qhib tshaj tshaj plaws—yog tias muaj kev siv tsis zoo, kev sib npaug tsis zoo, lossis tsis xav txog qhov chaw uas yuav tsum siv nws, ces yuav cuam tshuam rau kev nyhaum, kev ntsuas, thiab kev nyob ntev. Kev siv tshaj tshaj plaws yog qhov tseem ceeb tshaj plaws: yuav tsum siv ntawm 2–6% (ntawm pov tseg cement) thiab tsis tuaj yeem siv ntau lossis tsis ntau. Yog siv ntau, nws yuav ua rau cov pov tseg nyob rau hauv qhov chaw yuav ntxiv ntxiv thiab yuav tsum tau siv dua; yog siv ntau, nws yuav ua rau qhov chaw yuav ntxiv ntxiv thiab yuav ua rau qhov kev nyhaum ntxiv ntxiv, tab sis tsis muaj kev pab zoo dua. Kev sib npaug zoo tshaj plaws kuj tseem ceeb li: RDP yuav tsum siv rau sib npaug nrog pov tseg thiab cov khoom sib npaug tos kawm nqaj rau hauv rau cov qhov tshuaj los tsis txhob muaj kev tshuaj tshuaj thiab kom cov qhov tshuaj tau txais cov qhov tshuaj txhua yam. thaum kawm nqaj rau hauv, RDP yuav tsum siv tom qab noj lossis muab nqaj rau hauv cov kab laj uas muaj cov nqaj rau hauv kom tsis txhob muaj kev tshuaj tshuaj los ntawm cov dej. kev muab nqaj rau hauv nyob rau hauv lub tsev yuav tsum ua raws li cov kev cai uas muaj: kev muab nqaj rau hauv tsis zoo lossis kev muab nqaj rau hauv tsis zoo yuav pab cov qhov tshuaj tsis zoo thiab pab cov qhov tshuaj tsis zoo nyob rau hauv lub tsev. qhov tshuaj tshuaj uas muaj nyob rau hauv lub tsev yog qhov tshuaj tshuaj uas muaj nyob rau hauv lub tsev—thaum muaj kev tshuaj tshuaj uas muaj nyob rau hauv lub tsev lossis kev tshuaj tshuaj uas muaj nyob rau hauv lub tsev, yuav tsum muab nqaj rau hauv kom zoo, tab sis yuav tsum muab nqaj rau hauv kom zoo—tsis yuav tsum muab nqaj rau hauv kom zoo. kev muab nqaj rau hauv RDP kom tsis zoo yog qhov tshuaj tshuaj uas muaj nyob rau hauv lub tsev: nws tsis yuav pab muab nqaj rau hauv kom zoo, tab sis yuav pab muab nqaj rau hauv kom zoo thiab pab muab nqaj rau hauv kom zoo uas yuav pab muab nqaj rau hauv kom zoo. kev muab nqaj rau hauv RDP yog qhov tshuaj tshuaj uas muaj nyob rau hauv lub tsev thiab yuav tsum muab nqaj rau hauv kom zoo thiab muab nqaj rau hauv kom zoo thiab muab nqaj rau hauv kom zoo—kom muab nqaj rau hauv kom zoo thiab tsis muab nqaj rau hauv kom zoo.

Qhia Tswv Yim

Yog li cas noj RDP uas muaj kev pab rau C1 adhesives?

C1 adhesives xav tau 2–3% ntawm cement los ntawm lub weight kom tau kev pab rau kev nyhav thiab kev nyhav hauv qhov sib twb.

Yog li cas noj RDP uas muaj kev pab rau C2 compliance?

Los ntawm kev pab rau C2 compliance, peb xav tias yuav tsum muaj 4–6% RDP los ntawm lub weight ntawm cement, raws li cov kev pab uas peb xav tau thiab cov ntaub ntawv ntawm lub zog.

Yog li cas yog cov kev pab tseem ceeb uas muaj khiav rau kev ntxiv RDP dosage?

Khiav RDP dosage ntxiv kev nyhav thiab kev nyhav hauv qhov sib twb, kev nyhav thiab kev nyhav hauv qhov sib twb, kev nyhav thiab kev nyhav hauv qhov sib twb, thiab kev nyhav hauv qhov sib twb. Dosages ntawm 4–6% yog zoo tshaj plaws rau cov kev siv uas muaj kev pab tseem ceeb.

Yog li cas RDP dosage txhais rau kev siv tau?

Thiab RDP pab rau kev nyhav thiab kev nyhav hauv qhov sib twb, li cas dosage loo (nws >6%) yuav ntxiv kev nyhav thiab kev nyhav hauv qhov sib twb, uas txhais rau kev siv tau.

Yog li cas RDP dosage yuav tsum muaj kev siv tau rau cov tile uas muaj kev siv tau?

Yes, cov dosage zoo (4–6%) yog xav tias yuav tsum muaj rau cov tile uas muaj kev siv tau thiab porcelain tiles raws li cov tile no muaj kev nyhav hauv qhov sib twb thiab kev nyhav hauv qhov sib twb.

Yus yuav tsum ua li cas thaum siv RDP?

RDP yuav tsum kho nrog qhov tsis muaj dej kom zoo, siv tom qab khiav nws, thiab sau nws hauv cov kab mob uas muaj dej kom tsis tau txais dej thiab tsis tau coj los ua ntxiv.