Rau kev lag luam thiab kos duab kos duab ntawm phab ntsa, qab nthab, pem teb, rooj tog hauv nws, nrog rau cov qhov rais thiab qhov rooj, cov xim pleev xim dej feem ntau yog siv. Cov xim pleev xim dej, cov yam ntxwv ntawm cov xim uas muaj xim ruaj khov thiab zoo rau cov txheej, yog ib puag ncig zoo thiab tsis muaj tshuaj lom rau cov kab mob nyob.
Txoj cai ntawm kev tsim cov tshuaj tiv thaiv ntawm cov xim pleev xim dej
Lub npe ntawm dej-raws li (dej-dispersion) xim los ntawm lub xub ntiag ntawm kev ncua ntawm pigments nyob rau hauv nws cov dej puag, uas ua ke ua ib tug emulsion. Dispersed cov ntsiab lus tsis yog tov nrog cov dej ib puag ncig, tab sis yog tsim thiab muaj nyob rau hauv parallel nrog nws.
Yog li, cov xim dej muaj xws li muab tub lim, thickener, latex thiab antiseptic.
Polymer hais tom qab ziab dej ntawm qhov chaw tsim ib txheej xim. Cov xim ntub dej tau yooj yim tshem tawm ntawm tes, thiab nws cov txheej txheem tsis muaj ntxhiab tsw tsw. Xim resistant rau mechanicalraug, txawm li cas los xij, nws tsis yog siv rau cov chaw hlau kom tsis txhob muaj corrosion los ntawm qhov muaj cov dej tsis tu ncua.
Cov yam ntxwv tseem ceeb ntawm cov xim pleev xim dej
Aqueous emulsion xim, uas nws cov yam ntxwv yog viscosity, noj, tshwj xeeb lub ntiajteb txawj nqus thiab ziab lub sij hawm, muaj ruaj khov kev ua tau zoo, yog optimally suited rau kev kho mob ntawm sab hauv ntawm lub tsev nyob.
Qhov degree ntawm dilution ntawm cov xim xim nrog dej yog qhia los ntawm viscosity Performance index, ntsuas nrog viscometer.
Kev noj cov xim emulsion ncaj qha nyob ntawm qhov nqus ntawm qhov tau txais qhov chaw thiab thaj tsam ntawm 100 txog 200 milliliters ib square meter ntawm nto, pleev xim rau nrog ib txheej xim ib millimeter tuab.
Qhov tshwj xeeb ntawm cov xim pleev xim dej yog kwv yees li 1.3 kilograms ib liter.
Lub sijhawm ziab ntawm cov xim dej yog nyob ntawm cov av noo thiab huab cua kub thiab thaj tsam li ob teev mus rau ib hnub. Qhov zoo tshaj plaws ziab ziab yog +20 degrees Celsius thiab av noo 65%.
Lub txee lub neej ntawm cov xim emulsion feem ntau nyob ntawm nws qhov chaw cia (qhov zoo tshaj qhov chaw tsaus nti) thiab qhov nruab nrab 24 lub hlis.
Cov yam ntxwv ntawm cov xim dej-dispersion yog muaj kev cuam tshuam tag nrho hauv cov ntaub ntawv ntawm GOST 28196-89.
GOST specifications
dej-raws li xim, cov yam ntxwv (GOST) uas tau sau npe nyob rau hauv tus lej 28196-89, yog hu ua dej-dispersion xim, sawv cev los ntawm kev ncua ntawm cov xim thiab cov muab tso rau hauv ib qho aqueous dispersion ntawm hluavtaws polymers, uas muaj ntau yam excipients ntxiv, xws li emulsifier, stabilizer thiab lwm yam.
GOST 28196-89 hloov qhov qub GOST 19214-80, GOST 20833-75, TU 6-10-1260-87, TU 6-10-2031-85, TU 6-10-2054-86, TU 6-10-2081-86 hais txog cov xim thiab cov kua roj vanish. Txhua cov xim dej-dispersion yog hluav taws kub, thiab lawv cov khoom tsim thiab kev ua haujlwm tsuas yog ua tau hauv cov chav cua xwb.
Raws li GOST, lawv txoj kev thauj mus los thiab kev khaws cia yuav tsum tau nqa tawm hauv cov ntim ntim ntawm qhov kub siab tshaj 0 degrees, tab sis lub sijhawm luv luv ntawm qhov ntsuas kub mus txog -40 degrees hauv ib hlis tau tso cai.
dej-raws li cov xim, cov yam ntxwv ntawm cov khoom uas muab nws lub teeb pom kev zoo, raug sim rau lub teeb nrawm ntawm lub Hoobkas - ib qho kev sim muab tso rau hauv lub teeb tshwj xeeb rau 24 teev, tom qab ntawd rau 2 teev ua tiav kev tsaus ntuj, thiab tom qab ntawd muab piv nrog cov qauv kws tshaj lij.
Txoj kev siv VEAK dej-dispersion xim
Dej-raws li cov xim VEAK, cov yam ntxwv ntawm cov uas yog ib qho tseem ceeb tshaj plaws rau kev nyab xeeb thiab ceev ua hauj lwm nyob rau hauv qhov chaw ntawm qhov chaw nyob, yog optimally yoog raukho tsev.
Nws muaj xim dawb thiab cov xim ntxiv, uas koj tuaj yeem tau txais cov xim uas xav tau.
Nyob rau hauv txhua rooj plaub, qhov chaw yuav tsum tau pleev xim rau yuav tsum zoo meej du thiab qhuav - nyob rau hauv xws li mob, kev noj ntawm HAEK yuav tsawg tshaj li 150 grams ib square meter. Nws yog qhov zoo tshaj plaws los tso rau ntawm qhov qub thiab twb tau pleev xim rau qhov chaw, vim tias nws muaj latex puag thiab dries li ntawm 4 teev.
Txij li VEAK yog cov xim acrylic xim dej, cov yam ntxwv ntawm kev tso cai rau dilution nrog dej, tab sis tsis ntau tshaj 10 feem pua ntawm cov ntim loj. Chemical thinners yuav tsum tsis txhob siv. Cov khoom ntawm cov xim ua kom nws tuaj yeem ntxuav cov chaw pleev xim nrog dej sov, tab sis cov cuab yeej yuav tsum tau ntxuav tam sim ntawd tom qab ua haujlwm tiav.
Raws li kev pom zoo, cov xim pleev xim tsis plam xim thiab lub zog rau 7 xyoo.
Txoj kev siv cov xim polyvinyl acetate
Polyvinyl acetate dej-raws li xim yog zoo ib yam nyob rau hauv zoo thiab kev pab cuam lub neej, raws li zoo raws li daim ntawv thov mechanism, cov yam ntxwv ntawm cov kev uas tso cai rau nws siv nyob rau hauv painting tsis tau tsuas yog lub sab hauv ntawm lub tsev, tab sis kuj cardboard., plywood, drywall thiab ntoo.
Polyvinyl acetate xim yog hluav taws kub, tab sis ntshai heev ntawm qhov kub thiab txias sib txawv thiab cov av noo siab heev. Cov xim no yog dej-raws li, cov yam ntxwv ntawm cov txheej txheem uas tso cai rau nws siv los ua ib qho chaw tiav, thiab ua tsaug rau nws dries tag nrho hauv ob teev.
Kev siv cov polyvinyl acetateemulsion xim yog kwv yees li 200 milliliters ib square meter; los pleev xim rau stains, koj yuav tsum tau siv nws nyob rau hauv ob peb txheej. Kev noj ntau dua piv rau lwm hom xim thiab qhov tshwj xeeb ntawm cov khoom sib xyaw ua rau nws kim dua tus nqi.
Cov yam ntxwv tshwj xeeb ntawm cov xim dej "Tex"
Thaum xaiv hom thiab tuam txhab ntawm cov xim thiab cov kua roj vanish, koj yuav tsum tau them sai sai rau Tex dej-raws li xim. Nws yog ib qho silicone-hloov acrylate-raws li kua nplaum, uas muaj cov xim dawb-dawb luster, noj nruab nrab thiab yooj yim ntawm daim ntawv thov. Ntau yam xim yog tsim rau nws.
Dej-raws li xim "Tex", cov yam ntxwv ntawm kev tso cai rau nws siv rau cib, pob zeb, ntoo nto, yog siv los kho cov phab ntsa thiab qab nthab; nws tsim cov yeeb yaj kiab matte rau ntawm lub dav hlau, tso cai rau huab cua mus ncig dawb ntawm cov tuab ntawm cov xim thiab cov khoom siv saum npoo. Txawm li cas los xij, qhov tsis zoo thiab qhov tsis zoo ntawm cov xim "Tex" yog nws qhov kub thiab txias - huab cua hauv chav thaum siv nws yuav tsum sov dua +5 degrees Celsius.
Cov ntsiab cai dav dav rau kev saib xyuas thiab tu ntawm qhov chaw coated nrog dej-dispersion xim
Txhua yam xim xim dej - ntxuav tau; cov yam ntxwv ntawm cov xim no tso cai rau tsis tsuas yog yooj yim thiab sai sai siv cov khoom ntawm ib tug ntsug los yog kab rov tav nto nrog ib tug roller thiab txhuam, tab sis kuj tom qab.muab daim ntaub ntub dej so ntev ntev.
Txhawm rau ntxuav cov cuab yeej hauv tsev thiab khaub ncaws los ntawm cov xim zoo li no, xab npum suds kuj siv (rau polyvinyl acetate suspensions); acrylic emulsion xim yuav tsum ua ntej raug puas tsuaj nrog lub spatula - kom tshem tawm sai dua, qhov xav tau ntawm thaj chaw uas muaj xim yog thawj zaug pasted nrog ntawv lossis ntawv xov xwm, cog rau ntawm jelly-zoo li hmoov txhuv nplej siab los yog cov kua nplaum zoo tib yam.
Nws tuaj yeem ntxuav thaj chaw ntawm qhov chaw los ntawm cov xim acrylic siv lub tsev cov plaub hau thiab lub spatula - hlawv cov tawg ntawm qhov chaw thiab tshem tawm nrog cov hniav.
Cov kuab tshuaj lom neeg kuj tsim nyog rau kev tshem tawm cov xim pleev xim dej, muaj qhov cuam tshuam me ntsis, tab sis lawv tawm cov ntxhiab tsw tsw qab thiab muaj tshuaj lom rau lub cev.
Ntau cov lus pom zoo rau kev siv cov xim pleev xim dej
Ua ntej ua haujlwm nrog dej-raws li xim, nws yog ib qho tsim nyog yuav tsum tau ua kom qib, plaster thiab, yog tias tsim nyog, muab txhua qhov chaw. Txawm tias muaj kev phooj ywg ib puag ncig ntawm cov xim, koj tseem yuav tsum tau npaj tsom iav, lub tshuab ua pa thiab hnab looj tes ua haujlwm.
Ib lub kaus poom ntawm cov xim yog shaken, nws cov ntsiab lus yog tov thiab diluted nrog dej raws li cov lus qhia. Cov xim yog siv rau cov phab ntsa putty hauv peb txheej, ntawm phab ntsa - hauv ib qho. Cov xim yog siv nyob rau hauv parallel kab txaij los ntawm lub qhov rais mus rau phab ntsa. Cov cuab yeej siv muaj xws li txhuam, chais, spatulas thiabphom phom.
