Zinc dawb yog cov xim tsis muaj kab mob raws li zinc oxide, uas, ua ke nrog ntau yam binders (linseed roj, zaub roj), tsim cov xim dawb. Tsawg tus neeg paub txog cov yam ntxwv thiab cov yam ntxwv ntawm zinc dawb, yog li tsab xov xwm no yuav tsom mus rau cov tshuaj no.
Ntse
Nyob rau hauv nws daim ntawv ntshiab, cov khoom yog dawb kiag li nrog ib tug me ntsis bluish tinge. Dawb tsis muaj ntxhiab tsw, thiab tuaj yeem sib xyaw zoo nrog cov kua dej alkali thiab ammonia. Lawv tsis raug puas los yog deformed nyob rau hauv tus ntawm cov kab mob thiab cov kab mob. Vim tias lawv nqus dej noo, lawv yuav tsum tsuas yog khaws cia rau hauv cov thawv kaw.
Cov khoom zoo kuj suav nrog cov ntsuas xws li:
- qis toxicity;
- tshav ntuj tiv taus;
- easy thov;
- sib haum nrog txhua yam xim;
- weather resistance.
Txawm li cas los xij, lawv kuj muaj cov khoom tsis zoo, uas suav nrog kev tawg, tsis muaj zog zais thiab muaj peev xwm nqus tau cov roj ntau.
Thaum siv pleev xim, xws li cov khoom ntawm cov xim dawb li brittleness thiab muaj peev xwm los npog cov kab nrib pleb,ua rau lub fact tias cov duab pleev xim rau lawv siv tsis tau folded. Thiab koj kuj yuav tsum tau saib xyuas qhov nro ntawm lub canvas, uas hloov nrog nce av noo. Thaum nws yog compressed los yog stretched, cov dawb yuav crumble.
Nyob zinc dawb
Zinc dawb muab faib ua ob qib: BTs0 thiab BTs1.
Cov khoom lag luam ntawm BTs0 hom yog siv rau kev tsim cov xim thiab cov kua roj vanish, tawv tawv thiab cov khoom siv roj hmab. Nws kuj tseem ntxiv rau cov ntaub ntawv abrasive thiab cement compositions rau kev kho hniav.
BTs1 hom tshuaj ntxuav tes yog siv rau kev tsim cov asbestos-cement thiab xim thiab cov kua roj vanish, uas yog siv rau sab hauv thiab sab nrauv kho kom zoo nkauj ntawm thaj chaw, tsawg dua rau kev tsim cov tawv nqaij thiab cov roj hmab ib leeg.
Daim ntawv thov
Dhau li ntawm qhov no, muaj lwm qhov chaw uas siv zinc dawb. Lawv daim ntawv thov siv qhov chaw hauv tshuaj. Lawv yog ib qho ntawm cov khoom ntawm qee cov tshuaj tua kab mob thiab cov hmoov. Lawv kuj siv los ua cov yas, roj hmab, ntawv thiab iav.
Zinc dawb (xim xim dawb), ua los ntawm qib A zinc oxide, tuaj yeem sib txawv nyias. Ntawm cov xim no, zinc dawb MA 22 feem ntau yog siv rau kev kho kom zoo nkauj sab hauv, uas yog qhov txawv ntawm kev ua haujlwm siab thiab kev nyab xeeb hluav taws.
Dhau li ntawm, lub tsev tiv thaiv cov xim pleev xim yog tsim los ntawm zinc dawb hnub no. Dawb yog ntxiv rau putties thiab ntau yam adhesives, thiab kuj yog siv nyob rau hauv kev tsim cov ceramics.
Koj yuav tsum paub tias thaum ua haujlwm kho, zinc dawb, diluted nrog cov roj ziab kom cov xim sib xws, tuaj yeem impregnated nrog linen strands, uas yog siv los ua cov ntsaws ruaj ruaj hauv threaded kev sib txuas ntawm cov kav dej.
Rau cov duab pleev xim, cov zinc dawb ntshiab yog tsim, muaj cov khoom zoo heev ntawm zinc oxide, tsis muaj impurities ntawm hlau oxide thiab txhuas. Lawv yog cov translucent, muaj lub suab txias thiab, thaum thov, tsim ib zaj duab xis inelastic. Lawv yog siv nyob rau hauv txhua hom kev pleev xim vim lawv yog cov xim uas tsis muaj zog, uas tsis hloov pauv txawm nyob rau hauv cov xim uas muaj leej faj. Lawv feem ntau yog whitened nrog cinnabar, thiab ntxiv rau cadmium los txhim kho nws zoo.
Oil zinc dawb
Cov khoom no yog zinc dawb, uas yog rubbed nrog ziab roj lossis roj zaub. Lawv feem ntau hu ua roj pleev xim thiab siv los tiv thaiv cov qauv hlau los ntawm kev xeb, nrog rau xim ntoo thiab plastered nto. Ntxiv mus, lawv tsim nyog siv sab nraum zoov thiab sab hauv tsev.
Zinc dawb roj muaj lub zog zais zoo, uas yog, thaum siv rau saum npoo, lawv zais cov xim ntawm cov txheej txheem yav dhau los. Tsis tas li ntawd, tom qab daim ntawv thov, lawv tsim ib tug ruaj khov anti-corrosion txheej nrog high noo noo kuj thiabvapor nruj.
painting method
Zinc dawb yog siv los npog plastered, hlau thiab ntoo nto.
Kev ua haujlwm yog ua los ntawm kev hnav hnab looj tes roj hmab, thiab thaum lawv siv thiab tom qab ua tiav, chav yuav tsum tau ua kom cua.
Ua ntej koj pib pleev xim, dawb, yog tias nws yog cov hmoov nplej tuab, yuav tsum tau diluted nrog cov roj ziab kom qhuav, qhov feem pua ntawm cov khoom yuav tsum yog 18-25% ntawm tag nrho cov xim dawb, thiab ua tib zoo do kom zoo. Yog tias nws yog xim roj, yog tias tsim nyog, tus ntsuj plig dawb lossis turpentine ntxiv rau nws.
Nto yuav tsum npaj ua ntej:
- ua ntej nws yog ntxuav cov av, roj, plua plav thiab cov xim qub (yog tias xav tau). Qhov no ua tiav nrog spatula;
- ces qhov khoob thiab tawg yog npog nrog putty;
- tom qab nws qhuav, qhov chaw ua haujlwm yog polished siv cov ntawv xuab zeb;
- ces pleev xim rau;
- tom qab cov primers qhuav, lawv pib pleev xim.
Yuav kom txo tau cov khoom dawb, nws raug nquahu kom npog cov roj kom qhuav.
Thov dawb rau qhov chaw qhuav, du nrog cov xim txhuam hniav, tshuaj tsuag phom lossis cov menyuam:
- txhuam yog siv los pleev xim cov khoom me me thiab qhov chaw me me;
- siv txhuam lossis cov menyuam rau thaj chaw loj;
- ua kom zoo dua cov txheej txheem pleev xim yuav tshwm sim nrog kev pab los ntawm cov tshuaj pleev xim. Txoj kev no ua rau nws muaj peev xwm tsim tau ib txheej txawm thiab txheej txheem nyuaj-rau-mus txog qhov chaw.
Tus naj npawb ntawm cov txheej tuaj yeem yog 1 lossis 2, nyob ntawm qhov xav tau. Txhua txheej feem ntau dries thaum hmo ntuj yog tias chav tsev kub tsis qis dua + 20º C. Kev noj dawb rau ib txheej yog kwv yees li 170-200 g ib 1 sq. m.
Packaging
Kev xaiv sib txawv yog siv rau ntim. Zinc dawb tuaj yeem ntim rau hauv hnab (polyethylene lossis ntawv), polyethylene lossis ntoo thawv, thawv los yog plywood ntim nrog polyethylene liner, ntawv lossis polyethylene hnab, nrog rau hauv cov thawv ntim khoom tshwj xeeb.
Kev thauj mus los thiab khaws cia
Nws tau tso cai thauj cov khoom los ntawm txhua hom kev thauj mus los, tshwj tsis yog cov dawb ntim rau hauv cov thawv ntim tshwj xeeb - lawv tuaj yeem thauj tau hauv tsheb qhib, nrog rau khaws cia hauv qhov chaw qhib.
Raws li cov zinc dawb ntim rau hauv lwm cov pob, lawv yuav tsum muab cia rau hauv cov tsev khaws khoom kaw nkaus xwb, nrog rau qhov kub ntawm -40 ºС txog +40 ºС. Lawv muab tso rau ntawm cov ntoo pallets hauv pawg txog li 3 m siab.
Tsev lub neej yog 1 xyoos.
