Redispersible latex hmoovyog ib qho kev hloov kho cov hmoov uas tau los ntawm cov tshuaj tsuag kom qhuav ntawm binary los yog ternary copolymer ntawm vinylacetase thiab ethylene tert carbonate VoVa los yog alkene los yog acrylic acid.Nws muaj zoo redispersibility, thiab yog redispersible rau hauv tshuaj pleev ib ce thaum nws tiv nrog dej, thiab nws cov tshuaj muaj pes tsawg leeg yog zoo tib yam rau cov tshuaj pleev ib ce.
Kev tshawb fawb ntawm redispersible latex hmoov pib nyob rau hauv 1934 nrog IG Farbenindus AC nyob rau hauv lub teb chaws Yelemees lub polyvinylidene acid redispersible latex hmoov.
Thiab Japanese hmoov latex.Tom qab Tsov Rog Ntiaj Teb Zaum II, muaj kev tsis txaus ntawm kev ua haujlwm thiab kev tsim kho, yuam cov teb chaws Europe, tshwj xeeb tshaj yog lub teb chaws Yelemees, siv ntau yam khoom siv hmoov los txhim kho kev tsim kho.Thaum xyoo 1950s, Lub Tuam Txhab Lub Tuam Txhab Hearst thiab Wacker Chemical Company tau pib muaj kev lag luam ntawm cov hmoov latex redispersible.Nyob rau lub sijhawm ntawd, cov hmoov latex redispersible yog feem ntau ntawm polyvinyl acetate hom, feem ntau yog siv rau woodworking adhesive, phab ntsa primer, thiab cement phab ntsa.Txawm li cas los xij, vim muaj kev txwv ntawm PVAc nplaum hmoov lub siab yam tsawg kawg nkaus zaj duab xis tsim qhov kub thiab txias, dej tsis kam, thiab tsis zoo alkali tsis kam, nws siv tau tsawg heev.
Nrog kev vam meej industrialization ntawm VAE lotion thiab VA / VeoVa lotion,redispersible emulsion hmoovNrog rau qhov tsawg kawg nkaus zaj duab xis tsim kub ntawm 0C, dej tsis kam thiab alkali tsis kam yog tsim nyob rau hauv 1960s.Tom qab ntawd, nws daim ntawv thov tau nthuav dav hauv Tebchaws Europe, thiab nws daim ntawv thov tau maj mam nthuav mus rau ntau yam qauv thiab tsis yog cov qauv tsim cov nplaum, qhuav sib xyaw mortar hloov kho, phab ntsa rwb thaiv tsev thiab xov tshuab, phab ntsa screed thiab sealing plaster Lub teb ntawm hmoov txheej thiab lub tsev putty. .
Kev tsim khoom hauv tsev ntawm redispersible latex hmoov Nyob rau xyoo tas los no, qhov kev thov rauredispersible latex hmoovHauv Tebchaws Europe thiab North America tau loj hlob qeeb.Ntawm qhov tsis sib xws, nrog rau kev maj mam ua raws li Tuam Tshoj txoj kev txuag hluav taws xob thiab kev txhawb nqa hnyav ntawm cov khoom sib xyaw qhuav rau cov tsev, kev siv cov hmoov latex redispersible hauv Suav teb tau nce sai heev.Cov tuam txhab txawv teb chaws txawv teb chaws thiab qee cov lag luam hauv tsev kuj tau tsim cov phiaj xwm ntawm cov hmoov latex redispersible thoob plaws lub teb chaws.Raws li cov kws tshaj lij cov ntaub ntawv txheeb cais, xyoo 2003, lub ntiaj teb kev tsim cov tshuaj latex rov qab yog 190000 tons, feem ntau yog siv hauv Tebchaws Europe thiab North America.Kev noj nyob rau hauv Suav lag luam yog tsawg dua 5000 tons.Txawm li cas los xij, nyob rau xyoo 2007, kev lag luam noj ntawm cov hmoov txhuv nplej siab hauv Suav teb tau mus txog 450000 tons, nrog rau cov chaw muag khoom tseem ceeb yog Dalian Chemical, Wacker los ntawm Lub Tebchaws Yelemees, thiab Lub Tebchaws Starch los ntawm Tebchaws Meskas.Nws yog kwv yees hais tias los ntawm 2010, qhov kev thov rau redispersible latex hmoov nyob rau hauv Tuam Tshoj yuav ncav cuag 100000 tons.
Hom ntawm redispersible latex hmoov:
Lub ntsiab hom ntawm redispersible latex hmoov tam sim no siv nyob rau hauv kev ua lag luam yog:
Vinyl acetate thiab ethylene copolymer hmoov (Vac/E), ethylene thiab vinyl chloride, thiab montmorillonite ethylene ternary copolymer hmoov (E/Vc/VL), vinyl acetate thiab ethylene thiab siab dua fatty acid ethylene ternary copolymer hmoov (Vac/E) , vinyl acetate thiab siab dua fatty acid ethylene copolymer hmoov (Vac/VeoVa), acrylic acid thiab ethylene copolymer hmoov (A/S), vinyl acetate thiab acrylic acid, thiab ntau dua fatty acid ethylene copolymer hmoov (Vac/A/VeoVa) Txias acid ethylene txias homopolymer roj hmab hmoov (PVac), styrene butadiene copolymer roj hmab hmoov (SBR), thiab lwm yam.
Muaj pes tsawg leeg ntawm redispersible latex hmoov:
* Redispersible latex hmoov feem ntau yog hmoov dawb, tab sis kuj muaj ob peb lwm yam xim muaj.Nws cov khoom muaj xws li: * Polymer resin: nyob rau hauv lub hauv paus ntawm cov roj hmab hmoov hais, nws kuj yog lub ntsiab tivthaiv uas yuav siv tau rau disperse cov latex hmoov.
* Ntxiv (sab hauv): Siv ua ke nrog cov resin los hloov cov resin.
* Additives (sab nraud): Txhawm rau nthuav dav qhov kev ua tau zoo ntawm cov hmoov latex redispersible, ntxiv cov ntaub ntawv ntxiv.
Kev tiv thaiv colloid:
Ib txheej ntawm cov khoom siv hydrophilic qhwv rau ntawm qhov chaw ntawm redispersible latex hmoov hais, feem ntau ntawm cov uas tuaj yeem redispersible.
Kev tiv thaiv colloid ntawm dispersed latex hmoov yog polyvinyl cawv.
Anti caking agent: Fine ntxhia muab tub lim feem ntau yog siv los tiv thaiv caking ntawm roj hmab hmoov thaum lub sij hawm cia thiab tsheb thauj mus los, thiab los pab txhawb cov ndlwg ntawm roj hmab hmoov (pob tseg los ntawm cov hnab ntawv los yog tank tsheb)
Lub luag haujlwm ntawmRDP:
* Lub redispersible latex hmoov tsim ib zaj duab xis tom qab dispersion thiab ua hauj lwm raws li cov nplaum thib ob los txhim kho nws lub zog;
* Cov kev tiv thaiv colloid yog absorbed los ntawm mortar system (nws yuav tsis puas los ntawm dej tom qab tsim zaj duab xis, los yog "secondary dispersion":
* Cov zaj duab xis-forming polymer resin yog muab faib ua cov khoom txhawb nqa thoob plaws hauv tag nrho cov mortar system, yog li ua kom cov cohesion ntawm cov mortar:
Product Performance:
Redispersible latex hmoov yog tsim los ntawm cov tshuaj pleev xim polymer los ntawm cov tshuaj tsuag kom qhuav.Tom qab sib tov nrog dej hauv mortar, nws yog emulsified thiab dispersed nyob rau hauv dej los tsim ib tug ruaj khov polymer lotion dua.Tom qab redispersible latex hmoov yog emulsified thiab dispersed nyob rau hauv dej, cov dej evaporates, tsim ib tug polymer zaj duab xis nyob rau hauv lub mortar los txhim kho kev ua tau zoo ntawm mortar.Txawv redispersible latex hmoov muaj qhov sib txawv ntawm cov hmoov qhuav mortar.Los ntawm kev txhim kho qhov cuam tshuam tsis kam, ua haujlwm ntev, thiab hnav tsis kam ntawm mortar, cov hmoov nplaum nplaum ua rau lub qhov hws ntawm cov tshuaj khib, ua kom nws cov compactness thiab txhim kho nws cov hnav tsis kam.Nyob rau hauv qhov kev txiav txim ntawm sab nraud quab yuam, nws yuav tsim kev so tsis muaj kev puas tsuaj.Polymer adhesive films tuaj yeem nyob ruaj khov hauv cov tshuab mortar.Txhim kho kev ua haujlwm ntawm kev tsim kho mortar.
Muaj cov nyhuv lubricating ntawm cov khoom ntawm polymer nplaum hmoov, tso cai rau cov khoom siv khib nyiab kom ntws tawm ntawm nws tus kheej, thaum cov hmoov nplaum muaj qhov cuam tshuam rau huab cua, provide compressibility ntawm mortar thiab txhim kho nws cov haujlwm ua haujlwm thaum tsim kho.Txhim kho lub zog sib txuas thiab cohesion ntawm mortar.
Tom qab ua yeeb yaj kiab nrogredispersible latex hmoovRaws li cov organic binder, nws tuaj yeem tsim lub zog tensile siab thiab nplaum lub zog ntawm cov substrates sib txawv.Nws ua lub luag haujlwm tseem ceeb hauv kev ua kom zoo ntawm cov tshuaj khib thiab cov khoom siv organic (EPS, extruded foam board) thiab du nto substrate.Cov zaj duab xis-forming polymer nplaum hmoov yog muab faib ua cov khoom siv ntxiv thoob plaws hauv tag nrho cov tshuaj khib nyiab, ua kom muaj kev sib koom ua ke ntawm mortar.Txhawm rau txhim kho huab cua tiv thaiv, khov-thaw tiv thaiv, thiab tiv thaiv mortar cracking, redispersible latex hmoov belongs rau thermoplastic resin, uas muaj qhov yooj yooj yim thiab tuaj yeem ua rau cov mortar hloov mus rau lwm qhov chaw txias thiab kub hloov, tiv thaiv mortar tawg vim qhov kub sib txawv. .Los ntawm kev txhim kho cov hydrophobicity ntawm mortar thiab txo cov dej nqus, cov hmoov latex tuaj yeem rov ua dua los ua ib zaj duab xis ntawm qhov pore thiab qhov chaw ntawm lub mortar.Polymer nplaum zaj duab xis yuav tsis tau rov ua dua tom qab ntsib dej, tiv thaiv kev cuam tshuam ntawm dej thiab txhim kho nws cov impermeability.Tshwj xeeb redispersible latex hmoov nrog cov nyhuv hydrophobic muaj cov nyhuv hydrophobic zoo dua.Txhim kho qhov khoov lub zog thiab flexural zog ntawm mortar.
Khoom siv:
Sab nrauv phab ntsa rwb thaiv tsev:
Bonding mortar: Xyuas kom meej tias cov mortar ruaj khov rau ntawm phab ntsa rau EPS board.Txhim kho kev sib raug zoo.
Plastering mortar: Xyuas kom cov neeg kho tshuab lub zog, tawg tsis kam, durability, thiab cuam tshuam tsis kam ntawm cov rwb thaiv tsev.
Joint muab tub lim: Lub impermeability ntawm mortar rautiv thaiv dej nkag.Nyob rau tib lub sijhawm, nws muaj qhov zoo adhesion nrog cov npoo ntawm cov vuas luaj ceramic, qis shrinkage tus nqi, thiab yooj.
Kev kho cov pobzeb thiab ntoo board plastering putty: Txhim kho qhov adhesion thiab kev sib txuas lub zog ntawm putty ntawm cov substrates tshwj xeeb (xws li cov vuas luaj ceramic, mosaics, plywood, thiab lwm yam du nto), kom ntseeg tau tias cov putty muaj qhov yooj yim rau strain lub expansion coefficient ntawm lub substrate.
Masonry thiab plastering mortar: Txhim kho kev tuav dej.Txo cov dej poob ntawm cov porous substrate.
Cement raws li waterproof mortar:Xyuas kom cov dej tsis zoo ntawm cov mortar txheej, thaum tseem muaj cov adhesion zoo nrog lub hauv paus nto, thiab txhim kho cov compressive thiab flexural zog ntawm mortar.
Self-leveling pem teb mortar:Xyuas kom meej qhov sib piv ntawm elastic modulus ntawm mortar, nrog rau nws tsis kam mus khoov thiab tawg.Txhim kho qhov hnav tsis kam, kev sib khi lub zog, thiab cohesion ntawm mortar.
Interface mortar:Txhim kho lub zog saum npoo ntawm lub substrate thiab ua kom lub zog sib txuas ntawm cov mortar.
Sab hauv thiab sab nrauv phab ntsa putty:Txhim kho lub zog ntawm kev sib txuas ntawm putty thiab xyuas kom meej tias nws muaj qee qhov kev hloov pauv yooj yim rau cushion qhov sib txawv expansion thiab contraction stresses generated los ntawm txawv puag txheej.Xyuas kom meej tias lub putty muaj zoo aging kuj, impermeability, thiab noo noo kuj.
Kho mortar:Xyuas kom meej tias qhov expansion coefficient ntawm mortar matches ntawm lub substrate, thiab txo cov elastic modulus ntawm lub mortar.Xyuas kom meej tias lub mortar muaj hydrophobicity txaus, breathability, thiab lub zog sib txuas.
Pobzeb nplaum thiab sib koom ua ke:Pobzeb nplaum: muab lub zog muaj zog sib txuas rau mortar, muab kev yooj yim txaus los lim qhov sib txawv thermal expansion coefficients ntawm substrate thiab ceramic vuas.Txhim kho qhov yooj yim ntawm kev tsim kho kev ua haujlwm thiab txhim kho kev ua haujlwm zoo
Post lub sij hawm: Oct-08-2023