Q1: Dab tsi yog txoj cai tseem ceeb tshaj plaws rau kev xaiv cov sealant rau galvanized ua ntej-coated steel coils?
Rau cov khoom siv hlau xws li galvanized ua ntej-coated steel coils, ob peb lub hauv paus ntsiab lus yuav tsum tau ua raws li nruj me ntsis rau thaum xaiv sealant; Txwv tsis pub, corrosion thiab adhesion tsis ua hauj lwm muaj feem ntau.
1. Neutral-kho sealant yuav tsum raug xaiv: Qhov no yog qhov tseem ceeb tshaj plaws thiab qhov tseem ceeb tshaj plaws. Vim tias cov txheej txheem galvanized thiab ua ntej- txheej txheej yog rhiab rau cov tshuaj, cov kua qaub sealants tso cov kua qaub thaum kho, ncaj qha corroding cov hlau nto, ua rau blistering, tev, thiab thaum kawg xeb.
2. Yuav tsum muaj kev nplaum zoo heev: Lub sealant yuav tsum muaj zog thiab ntev adhesion rau galvanized thiab ua ntej -coated steel sheets (cov ntaub ntawv txheej xws li PE polyester, PVDF fluorocarbon, thiab lwm yam), kom ntseeg tau tias nws tsis delaminate los yog detach nyob rau hauv tej yam kev mob xws li cua, nag, thiab thermal expansion thiab contraction.
3. Kev tiv thaiv huab cua zoo heev thiab ua haujlwm ntev: Lub sealant yuav tsum tiv taus qhov kev sim ntawm huab cua hnyav xws li tshav ntuj, nag, kub thiab kub hloov pauv, thiab ozone rau lub sijhawm ntev. Nws yuav tsum tau tiv thaiv ultraviolet aging thiab tsis tawg, hmoov, los yog poob elasticity thaum lub sij hawm ntev - siv, thiaj li ua kom ntev - lub sij hawm waterproof sealing nyhuv.
Q2: Tau ntsib nrog ntau hom sealants xws li silicone, polyurethane, thiab MS hloov silane, kuv yuav xaiv li cas raws li cov xim ntawm cov xim -coated steel ntawv?
Tam sim no, lub hauv paus tsev sealants feem ntau poob rau hauv peb pawg: silicone, polyurethane, thiab MS hloov silane. Txhua tus muaj nws qhov kev ua tau zoo, thiab kev xaiv yuav tsum tau ua raws li qhov tshwj xeeb daim ntawv thov scenario.
Q3: Dab tsi yog qhov kev hloov pauv qhov peev xwm? Kuv yuav tsum xaiv li cas raws li qhov loj ntawm qhov sib koom?
"Displacement Peev Xwm" yog qhov taw qhia tseem ceeb uas ntsuas seb lub sealant tuaj yeem tiv taus qhov nthuav dav thiab kev sib koom ua ke vim yog sab nraud quab yuam xws li kub hloov pauv thiab cua loads.
Kev ntsuas lub ntsiab lus: Cov qauv kev lag luam faib cov peev txheej ntawm cov sealants rau ntau qib, xws li 25, 20, thiab 12.5. Cov lej sawv cev qhov feem pua ntawm kev hloov pauv hauv qhov dav sib koom ua ke uas lub sealant tuaj yeem tiv taus. Piv txwv li, 20-qib sealant tuaj yeem tiv taus ± 20% kev hloov pauv hauv kev sib koom ua ke ntawm qhov loj me yam tsis muaj kev tawg lossis delamination. Qib siab dua txhais tau tias nws tuaj yeem tiv taus kev nthuav dav thiab kev cog lus ntau dua.
Txoj Cai Xaiv: Rau cov cheeb tsam uas muaj qhov loj ntawm lub rooj tsavxwm thiab qhov kub thiab txias hloov, cov khoom uas muaj peev xwm hloov tau ntau dua (xws li 20 lossis 25 qib) yuav tsum tau xaiv kom ntseeg tau ntev -lub sij hawm sealing zoo.
Q4: Cov ntsiab lus tseem ceeb dab tsi thaum lub sij hawm tsim kho txiav txim qhov kawg sealing nyhuv?
Txawm tias qhov zoo tshaj plaws sealant yuav muaj qhov txo qis yog tias siv tsis raug. Cov ntsiab lus hauv qab no yuav tsum tau saib xyuas tshwj xeeb:
** Kev Tu Txhuam Txhuam Txhuam Txhuam Txhuam Txhuam Txhuam Txhuam Txhuas Txhuas Txhuas Txhuas Txhuas Txhuas Txhuas Txhuas Txhuas Txhuas Txhuas Txhuas Txhuas Txhuas Txhuas Txhuas Txhuas Txhuas Txhuas Txhuas Txhuas Txhuas Txhuas Txhuas Txhuas Txhuas Txhuas Txhuas Txhuas Txhuas Txhuas Txhuas Txhuas Txhuas Txhuas Txhuas Txhuas Txhuas Txhuas Txhua . Qhov zoo tshaj plaws, lub sealant yuav tsum tau siv li ntawm 30 feeb ntawm kev ntxuav kom tsis txhob muaj kev sib kis.
** Kev Tsim Kho Kev Tshawb Fawb: ** Ua tib zoo saib rau qhov sib koom ua ke dav (W) rau qhov tob (D). AW:D=2:1 ratio feem ntau pom zoo. Qhov dav sib koom ua ke yuav tsum tsis pub tsawg tshaj 6 hli, thiab qhov tob tsis tshaj 3 hli. Cov pob qij txha uas nqaim dhau los yog sib sib zog nqus heev yuav cuam tshuam rau lub sealant kev ua haujlwm.
** Ambient Kub thiab Humidity Considerations: ** Feem ntau cov sealants haum rau daim ntawv thov ntawm qhov kub ntawm 5℃thiab 40℃thiab txheeb ze av noo ntawm 40% thiab 80%. Tsis txhob siv los nag, cua txias, lossis tshav ntuj ncaj qha.
Ua kom tiav thiab ua tiav: Thaum siv lub sealant, xyuas kom meej tias lub sealant ua tiav tag nrho cov qhov khoob uas tsis muaj kab noj hniav. Tom qab siv lub sealant, siv lub scraper kom du lub sealant sib koom ua ke nyob rau hauv 5 feeb los xyuas kom meej ib tug nruj daim ntawv cog lus ntawm lub sealant thiab lub substrate.
Q5: Cov teeb meem dab tsi yuav tshwm sim nrog sealant thaum siv? Lawv tuaj yeem tiv thaiv lossis daws tau li cas?
Kev nkag siab txog qee yam teeb meem thiab lawv txoj kev tiv thaiv tuaj yeem pab koj tswj tau qhov kev sib khi zoo dua.
Tej Teeb Meem|Qhov Tseem Ceeb|Kev tiv thaiv thiab kev daws teeb meem
Discoloration/Fading|Kev siv cov xim tsis ruaj tsis khov organic; sealant txheej thov dhau thinly (pom zoo dua 3 hli).|Kev Tiv Thaiv: Xaiv cov sealant tinted nrog inorganic pigments kom zoo dua huab cua tiv thaiv. Xyuas kom txaus sealant txheej thickness thaum thov.
Adhesion Failure/Detachment|Kev npaj ntawm substrate tsis zoo (roj, plua plav, ya raws); sealant incompatibility nrog substrate.|Kev Tiv Thaiv: Ua tib zoo ntxuav lub substrate nto raws li qhov yuav tsum tau ua; ua qhov kev kuaj adhesion ua ntej thov.