Yuav Ua Li Cas Txhim Kho Cov Nplaum thiab Mortar Zoo Siv PVA Hmoov

Hmoov PVA ua haujlwm ua tus neeg sawv cev muaj zog. Nws ua rau lub zog nplaum, kev ywj pheej, thiab kev tiv thaiv dej ntawm cov sib tov cement. Ntxiv hmoov PVA tsim ib lub vev xaib polymer me me. Lub vev xaib no khi rau ob qho tib si aggregate thiab substrate. Nws daws cov hauv paus ntawm kev ua tsis tiav: kev nplaum tsis zoo, plua plav saum npoo, tawg. Ib tus neeg muab khoom Tuam Tshoj txhim khu kev qha PVA hmoov polyvinyl cawv rau Adhesive / Mortar muab qhov zoo uas koj xav tau. Siv hmoov PVA kom raug rau cov txiaj ntsig ruaj khov, zoo.

Cov Ntsiab Lus Tseem Ceeb

· PVA hmoovtsim ib lub polymer web uas khi cov cement me me kom ruaj khov.
· Nws tiv thaiv cov hmoov av ntawm qhov chaw thiab txo cov kab nrib pleb hauv cov mortar.
Ntxiv 0.3% txog 0.5% PVA hmoov rau hauv cov khoom sib tov qhuav kom tau qhov zoo tshaj plaws.

PVA Hmoov Yog Dab Tsi Thiab Nws Ua Haujlwm Li Cas?

PVA hmoov, lossis polyvinyl cawv, yog cov polymer ua los ntawm dej uas yaj tau. Koj yuav pom nws nyob rau hauv ntau yam khoom siv hauv kev tsim kho. Cov hmoov dawb zoo no yaj hauv dej kom ua rau muaj kev daws teeb meem meej, ntau yam. Cov chaw tsim khoom tsim nws hauv ntau qib. Txhua qib muaj cov khoom sib txawv rau kev siv tshwj xeeb. Koj tuaj yeem xaiv qib uas yaj ntawm chav tsev kub lossis ib qib uas xav tau dej kub tshaj 95 ° C. Qhov kev ywj pheej no ua rau PVA hmoov muaj txiaj ntsig thoob plaws ntau yam lag luam.

Cov Khoom Tseem Ceeb ntawm PVA Hmoov

Hmoov PVA muaj ntau yam ntxwv zoo kawg nkaus. Nws tsim cov zaj duab xis muaj zog, pob tshab nrog lub zog siab. Cov zaj duab xis no tiv taus cov kuab tshuaj, roj, thiab kev sib txhuam. Cov polymer kuj ua haujlwm zoo heev ua emulsifier thiab stabilizer. Koj yuav txaus siab rau nws qhov kev ruaj khov thermal. PVA tseem ruaj khov hauv qab 40 ° C thiab tsuas yog mos thaum kub dua. Nws decomposes saum 220 ° C, uas ua rau nws muaj kev nyab xeeb rau feem ntau ntawm cov ntawv thov kev tsim kho.

Qhov viscosity ntawm PVA cov kua hloov pauv raws li qhov kwv yees tau. Koj tuaj yeem tswj cov khoom no los ntawm kev sib xyaw thiab kub. Lub rooj hauv qab no qhia txog cov kev hloov pauv no cuam tshuam li cas rau cov kua:

Lub Txheej Txheem Ua Haujlwm hauv Mortar thiab Adhesive Mixes

Thaum koj ntxiv PVA hmoov rau hauv cov khoom sib tov, nws yaj thaum lub sijhawm sib tov. Cov saw polymer kis thoob plaws theem dej. Thaum cov khoom sib tov kho, dej ua pa. Cov saw PVA ces tsim ib zaj duab xis txuas ntxiv. Zaj duab xis no tsim ib lub vev xaib me me uas qhwv ib puag ncig cov khoom me me thiab cov pob zeb sib xyaw. Lub vev xaib ua haujlwm zoo li tus choj. Nws txuas cov khoom siv inorganic rau ib leeg thiab rau qhov chaw substrate.

Cov polymer network no ua rau kev sib txuas zoo dua. Nws ua kom cov qhov me me thiab cov qhov tsis sib xws ntawm cov substrate. Cov zaj duab xis kuj ua rau muaj kev ywj pheej hauv cov mortar uas tau khov kho. Koj tau txais kev khaws dej zoo dua thaum lub sijhawm kho. Cov khoom no tiv thaiv kev qhuav ua ntej thiab txo qhov kev ntxhov siab shrinkage. Qhov tshwm sim yog kev sib txuas ruaj khov dua, ruaj khov dua. Rau qhov zoo sib xws, koj yuav tsum tau los ntawm Tuam Tshoj tus neeg muab khoom PVA hmoov polyvinyl cawv rau Adhesive / Mortar. Lawv cov khoom ua kom ntseeg tau tias muaj kev ua tau zoo hauv txhua pawg.

Kev daws cov teeb meem nplaum thiab cov av nplaum uas siv PVA Hmoov

Kho Qhov Tsis Zoo ntawm Lub Zog Sib Txuas thiab Kev Sib Nraus

Qhov kev sib txuas tsis zoo ua rau cov vuas tawg thiab cov ntaub pua plag sib cais ntawm phab ntsa. Koj pom qhov teeb meem no feem ntau thaum koj ua haujlwm nrog cov khoom siv ntom lossis du. Cov nplaum tsuas yog tsis tuav tau qhov chaw zoo txaus.PVA hmoovdaws qhov teeb meem no ncaj qha. Nws tsim ib lub network polymer hauv qhov sib tov. Lub network no txuas qhov sib txawv ntawm cov nplaum thiab lub substrate. Nws puv cov qhov me me thiab tsim kom muaj kev sib txuas lus zoo.

Koj tuaj yeem ntsuas qhov kev txhim kho ntawm lub zog sib txuas nrog kev sim yooj yim. Kev sim sib piv ncaj qha ntawm cov nplaum pobzeb siv thiab cov qauv hloov kho qhia tau tias muaj txiaj ntsig zoo. Cov nplaum siv muaj 0.3% HPMC. Cov qauv hloov kho muaj 0.15% HPMC ntxiv rau 0.5% PVA 17-88. Lub zog tensile adhesion qhuav tom qab 28 hnub nce ntxiv ntawm 1.2 MPa mus rau 1.5 MPa. Qhov ntawd yog 25% kev txhim kho. Lub zog ntxiv no tiv thaiv kev tawg thiab ua rau koj cov pobzeb ruaj ntseg rau ntau xyoo. Yuav kom tau txais cov txiaj ntsig no tas li, koj xav tau qhov chaw txhim khu kev qha. Xaiv tus neeg muab khoom Tuam Tshoj PVA hmoov polyvinyl cawv rau Adhesive / Mortar. Qhov no ua kom koj cov khoom ua haujlwm zoo ib yam.

Tiv Thaiv Cov Hmoov Av Thiab Chalking

Kev siv cov hmoov av los ntxuav cov pob zeb ua rau cov pob zeb ua tiav zoo li tsis muaj zog thiab tsis yog kev tshaj lij. Koj siv koj txhais tes los ntxuav cov pob zeb thiab pom cov hmoov av xoob. Qhov teeb meem no tshwm sim thaum cov cement matrix tsis muaj zog txaus. Cov hmoov me me ntawm qhov chaw tsis lo ua ke. Hmoov PVA tiv thaiv qhov teeb meem no. Nws tsim cov zaj duab xis tawv thaum cov pob zeb kho. Cov zaj duab xis no qhwv cov hmoov av ntawm qhov chaw thiab xauv lawv rau hauv qhov chaw. Cov zaj duab xis kuj txhim kho qhov ceev ntawm qhov chaw. Koj tau txais qhov tiav du thiab tawv uas tiv taus kev txhuam. Cov zaj duab xis polymer tseem nyob ruaj khov txawm tias tom qab cov pob zeb qhuav tag. Koj qhov chaw kawg yuav tsis muaj hmoov av lossis chalk tawm raws sijhawm.

Txo Cov Kab Ntsig Shrinkage thiab Txhim Kho Kev Ywj Pheej

Thaum cov mortar poob dej sai dhau, cov kab nrib pleb me me yuav tshwm sim. Cov cement nplaum yuav tawg, thiab qhov kev ntxhov siab ua rau cov kab nrib pleb tsim. Qhov teeb meem no ua rau cov qauv tsis muaj zog thiab cia dej nkag mus. Hmoov PVA pab koj zam qhov tshwm sim no. Nws txhim kho kev khaws dej thaum lub sijhawm kho. Cov mortar nyob ntub ntev dua, uas txo qhov kev pheej hmoo ntawm kev qhuav sai. Cov zaj duab xis polymer kuj ntxiv qhov yooj ywm rau cov matrix hardened. Cov mortar yooj ywm tuaj yeem txav mus nrog lub substrate. Nws tuaj yeem ua rau muaj kev hloov pauv me me thiab kev hloov pauv kub yam tsis muaj kev tawg. Koj tau txais cov khoom siv zam txim ntau dua uas ua haujlwm zoo hauv cov xwm txheej nyuaj.

Txhim Kho Kev Tiv Thaiv Dej thiab Kev Ruaj Ntseg

Dej ua rau cov pob zeb qub puas tsuaj raws sijhawm. Cov voj voog khov-thaw ua rau muaj kev puas tsuaj loj tshaj plaws. Dej nkag mus rau hauv cov pob zeb, khov, nthuav dav, thiab rhuav tshem cov qauv. Koj yuav tsum tiv thaiv koj txoj haujlwm ntawm hom kev tawm tsam no. Hmoov PVA ua rau koj cov pob zeb tiv taus dej ntau dua. Cov zaj duab xis polymer ua haujlwm ua ib qho thaiv. Nws txo cov dej uas tuaj yeem nkag mus rau hauv cov pob zeb. Kev tiv thaiv no ua rau cov pob zeb ruaj khov dhau ntau lub voj voog khov-thaw.

Lub rooj hauv qab no qhia txog qhov sib txawv ntawm kev ua haujlwm khov-thaw:

Ib lub mortar uas hloov kho nrog cov khoom siv polymer xws li PVA tuaj yeem ua haujlwm tau 300 zaug yam tsis muaj kev puas tsuaj. Ib lub mortar ib txwm ua tsis tiav tom qab tsuas yog 50 txog 100 zaug xwb. Koj tuaj yeem pom qhov kev txhim kho loj heev hauv kev ruaj khov. Qhov no txhais tau tias koj txoj haujlwm kav ntev dua hauv huab cua txias. Koj kuj txo qhov kev pheej hmoo ntawm kev kho kim tom qab. Rau qhov txiaj ntsig zoo tshaj plaws, nrhiav koj cov khoom siv los ntawm Tuam Tshoj tus neeg muab khoom PVA hmoov polyvinyl cawv rau Adhesive / Mortar. Qhov zoo ntawm PVA hmoov ncaj qha cuam tshuam rau qhov kawg ntawm koj cov sib tov.

Cov Lus Qhia Txog Kev Siv PVA Hmoov

Tau Txais Qhov Sib Piv Sib Xyaws Kom Yog

Qhov piv ntawm qhov tseebPVA hmoovKev sib tov qhuav txiav txim siab koj cov txiaj ntsig kawg. Koj yuav tsum kho qhov ntau npaum li cas raws li koj daim ntawv thov tshwj xeeb. Rau cov nplaum pobzeb, ntxiv 0.3% txog 0.5% PVA hmoov los ntawm qhov hnyav ntawm tag nrho cov sib tov qhuav. Qhov ntau no muab rau koj qhov sib npaug zoo tshaj plaws ntawm kev nplaum thiab kev ywj pheej. Rau cov renders thiab plasters, siv 0.2% txog 0.4%. Rau grouts thiab kho mortars, nce qhov ntau mus rau 0.5% txog 1.0%. Cov piv siab dua txhim kho kev tiv thaiv dej thiab kev ywj pheej. PVA ntau dhau tuaj yeem qeeb lub sijhawm teeb tsa. Ib txwm sim ib pawg me me ua ntej. Ntsuas cov hmoov PVA nrog qhov ntsuas meej. Tsis txhob kwv yees qhov ntau npaum li cas. Cov piv sib xws txhais tau tias cov txiaj ntsig sib xws ntawm txhua qhov project.

Cov Kauj Ruam Ib Kauj Ruam Sib Tov thiab Daim Ntawv Qhia Siv

Ua raws li cov kauj ruam no los npaj cov tshuaj nplaum lossis cov nplaum PVA zoo:

1. Pib nrog koj cov khoom sib tov qhuav. Muab cov cement, xuab zeb, thiab cov pob zeb sib xyaw ua ke rau hauv ib lub thawv huv.

2. Ntxiv cov hmoov PVA rau cov khoom qhuav. Do kom zoo kom cov hmoov sib npaug thoob plaws hauv qhov sib tov.

3. Ntsuas cov dej uas xav tau. Qhov ntau npaum li cas nyob ntawm koj daim ntawv thov thiab qib PVA uas koj xaiv.

4. Maj mam ntxiv dej rau hauv cov khoom sib tov qhuav. Sib tov tas li nrog lub tshuab sib tov lossis siv tes.

5. Sib tov li 3 txog 5 feeb kom txog thaum koj tau txais cov nplaum du thiab sib npaug. Cia cov khoom sib tov so li 2 feeb.

6. Do dua li 1 feeb. Koj cov khoom sib tov tam sim no npaj siv tau lawm.

7. Siv cov khoom sib tov ua ntej lub sijhawm ua haujlwm. Cov khoom sib tov uas hloov kho los ntawm PVA muaj lub sijhawm siv tau zoo ib yam li cov khoom sib tov ib txwm muaj.

8. Ntxuav koj cov cuab yeej nrog dej tam sim ntawd tom qab siv. Zaj duab xis PVA qhuav nyuaj rau tshem tawm.

Cov Kev Ceeb Toom Tseem Ceeb thiab Cov Yuam Kev Feem Ntau Yuav Tsum Tsis Txhob Ua

Muaj ntau yam yuam kev uas ua rau koj cov PVA-modified mix puas tsuaj. Tsis txhob ua cov yuam kev no kom tau txiaj ntsig zoo tshaj plaws:

· Tsis txhob muab hmoov PVA ntxiv rau hauv dej ua ntej. Qhov no ua rau cov khoom sib xyaw ua ke. Ib txwm sib tov cov hmoov nrog cov khoom qhuav ua ntej.
· Tsis txhob siv dej ntau dhau. Dej ntau dhau yuav ua rau cov yas polymer yaj. Qhov no ua rau lub zog kawg thiab kev tiv thaiv dej ntawm koj cov mortar txo qis.
· Tsis txhob sib tov rau hauv qhov kub heev lossis txias heev. Qhov kub thiab txias heev cuam tshuam rau kev yaj thiab kev tsim cov zaj duab xis ntawm PVA polymer.
Tsis txhob sib tov PVA nrog cov tshuaj oxidizing muaj zog lossis cov tshuaj corrosive. Cov tshuaj no tuaj yeem ua rau cov polymer puas tsuaj thiab ua rau nws txoj kev ua haujlwm puas tsuaj.
· Khaws cov hmoov PVA kom raug. Cov av noo ntau ua rau cov hmoov nqus cov dej noo. Qhov no ua rau cov pob tawv, txo qhov yaj, thiab qis dua lub zog nplaum. Koj yuav tsum khaws cov hmoov PVA rau hauv qhov chaw txias thiab qhuav ntawm 5 ° C thiab 30 ° C. Khaws lub ntim khoom kom kaw txhua lub sijhawm. Siv cov tshuaj desiccants rau kev tiv thaiv ntxiv. Yog tias koj pom cov pob tawv, daj, lossis muaj ntxhiab tsw txawv txawv, PVA tau puas lawm. Tsis txhob siv nws.

Lub tshuab kev siv tshuab piav qhia vim li cas kev khaws cia thiaj li tseem ceeb. Qhov av noo ntau ua rau PVA nqus tau cov dej noo, ua rau o thiab poob cov khoom siv kho tshuab. Qhov av noo tsawg ua rau cov khoom qhuav, txo qhov yooj ywm thiab kev ruaj khov. Qhov kub siab ua rau cov polymer puas tsuaj sai dua. Qhov kub qis ua rau brittleness. Ib puag ncig tswj tau thiab ruaj khov yuav khaws koj cov hmoov PVA lub sijhawm khaws cia thiab kev ua haujlwm zoo.

Kev Muag Khoom Zoo PVA Hmoov Los Ntawm Tuam Tshoj Chaw Tsim Khoom PVA Hmoov Polyvinyl Cawv Rau Cov Nplaum / Mortar

Qhov zoo ntawm koj cov hmoov PVA txiav txim siab qhov kev ua tau zoo kawg ntawm koj cov mortar. Koj xav tau tus neeg muag khoom txhim khu kev qha. Tus neeg muag khoom Tuam Tshoj ntseeg siab PVA hmoov polyvinyl cawv rau Adhesive / Mortar muab cov khoom zoo thiab ruaj khov rau koj cov haujlwm.

Nrhiav cov neeg muag khoom uas muaj cov ntawv pov thawj zoo tseem ceeb. Cov ntawv pov thawj no qhia tau tias cov chaw tsim khoom ua raws li cov qauv zoo thiab kev nyab xeeb nruj heev:

Cov lag luam yuav tsum ua raws li REACH cov cai thaum xa tawm PVA mus rau EU. Cov cai no ua kom ntseeg tau tias cov tshuaj no muaj kev nyab xeeb rau tib neeg kev noj qab haus huv thiab ib puag ncig. Kev pom zoo los ntawm FDA yog qhov tsim nyog rau kev ua lag luam hauv Tebchaws Meskas. Nws xyuas kom meej tias cov khoom ua tau raws li cov qauv kev nyab xeeb thiab kev ua haujlwm zoo.

Ib tug neeg muag khoom zoo hauv Suav teb PVA hmoov polyvinyl cawv rau Adhesive / Mortar kuj ua raws li kev khaws cia thiab kev tuav pov hwm kom zoo. Lawv khaws cov hmoov rau hauv ib puag ncig tswj tau. Lawv siv cov ntim khoom kaw nrog ntau txheej kraft ntawv hnab thiab PE liners. Lawv siv FIFO kev tswj xyuas cov khoom muag kom ntseeg tau tias tshiab. Thaum koj tau txais koj cov khoom xa tuaj, xyuas cov ntim khoom puas tsuaj. Khaws cov hnab rau hauv lub tsev rau khoom txias thiab qhuav. Khaws lawv kom deb ntawm tshav ntuj ncaj qha, qhov chaw kub, thiab cov tshuaj lom neeg. Qhov kev saib xyuas no khaws lub txee lub neej thiab kev ua tau zoo ntawm PVA hmoov.

Hmoov PVA hloov cov khoom sib xyaw uas tsis muaj zog, tawg yooj yim mus ua cov nplaum thiab cov mortars uas muaj zog, ruaj khov. Koj tau txais kev sib txuas zoo dua, txo qhov tawg, thiab tiv taus dej zoo dua. Kev txuag nqi tau txog 20% ​​rau cov nplaum thiab 22% rau mortar, nrog rau kev ua tau zoo ntawm 15% thiab 18%. Siv cov lus qhia no hnub no. Xaiv tus neeg muab khoom Tuam Tshoj PVA hmoov polyvinyl cawv rau Adhesive / Mortar.

Cov Lus Nug Feem Ntau

Kuv yuav tsum ntxiv PVA hmoov ntau npaum li cas rau hauv kuv cov hmoov sib tov?

Ntxiv 0.3% rau 0.5%PVA hmoovlos ntawm qhov hnyav ntawm tag nrho cov khoom sib tov qhuav rau cov nplaum pobzeb. Kho qhov ntau raws li koj daim ntawv thov tshwj xeeb.

Kuv puas tuaj yeem sib tov PVA hmoov ncaj qha nrog dej?

Tsis yog. Ib txwm sib tov PVA hmoov nrog koj cov khoom qhuav ua ntej. Ntxiv rau hauv dej ua rau cov khoom sib xyaw ua ke thiab txo qhov sib txuas kawg.

Cov tshuaj nplaum PVA hloov kho siv tau ntev npaum li cas?

Koj yuav tsum siv cov khoom sib tov no tsis pub dhau 30 txog 60 feeb tom qab npaj tiav. Lub sijhawm no sib npaug rau lub sijhawm siv ntawm cov tshuaj khib nyiab ib txwm muaj.