Thaum muaj coob tus neeg yuav cov xim-coated boards, lawv tsis paub qhov txawv qhov txawv ntawm cov xim zoo-coated boards thiab cov xim tsis zoo-coated boards, vim hais tias cov nto zoo sib xws, thiab yuav tsis muaj teeb meem yog tias lawv tsis siv rau ib tug. lub sijhawm.Muaj ntau yam uas yuav tsum tau xav txog thaum xaiv cov txheej txheem, uas feem ntau suav nrog hom txheej txheej, txheej thickness, txheej xim thiab txheej gloss.Tsis tas li ntawd, qee zaum qhov yuav tsum tau ua rau primer thiab rov qab txheej ntawm cov txheej yuav tsum tau txiav txim siab.Cov hom txheej txheej tam sim no siv rau cov xim-coated steel daim hlau muaj xws li polyester txheej (PE), fluorocarbon txheej (PVDF), silicon hloov txheej (SMP), siab huab cua tiv thaiv txheej (HDP), acrylic txheej, polyurethane txheej (PU), plastisol txheej (PVC), thiab lwm yam.
Polyester (PE, Polyester)
PE coatings muaj adhesion zoo rau cov ntaub ntawv.Xim-coated steel daim hlau yog yooj yim rau txheej txheem thiab zoo li.Lawv pheej yig thiab muaj ntau yam khoom.Muaj kev xaiv dav ntawm cov xim thiab glosses.Polyester txheej tsis zoo tagnrho rau ultraviolet lub teeb tsis kam thiab hmoov tsis kam ntawm txheej zaj duab xis.Yog li ntawd, kev siv PE coatings tseem yuav tsum tau muaj qee qhov kev txwv.Nws feem ntau yog siv rau hauv cov cheeb tsam uas huab cua tsis huv tsis loj lossis rau cov khoom uas yuav tsum tau ua ntau yam txheej txheem molding.
▲ Muaj kev lag luam
Ordinary industrial nroj tsuag thiab warehouses thiab logistics warehouses tsis ua corrosion rau cov xim daim hlau lawv tus kheej, thiab tsis muaj siab yuav tsum tau rau corrosion kuj thiab anti-aging ntawm cov xim daim hlau.Kev txiav txim siab ntau dua yog muab rau kev ua tau zoo thiab kev siv nyiaj ntawm lub Hoobkas tsim.
Silicone Modified Polyester (SMP, Silicone Mobified Polyester)
Txij li thaum polyester muaj cov active pab pawg -OH / -COOH, nws yog ib qho yooj yim rau react nrog lwm cov polymer tebchaw.Txhawm rau txhim kho lub hnub ci tiv thaiv thiab cov hmoov hmoov ntawm PE, silicone resin nrog cov xim zoo nkauj thiab kub tsis kam yog siv rau cov tshuaj tiv thaiv denaturation., thiab denaturation piv ntawm PE tuaj yeem nyob nruab nrab ntawm 5% thiab 50%.SMP muab kev ua haujlwm zoo dua ntawm cov hlau phaj, thiab nws lub neej tiv thaiv corrosion tuaj yeem ntev li 10-12 xyoo.Tau kawg, nws tus nqi siab dua li ntawm PE, tab sis vim yog silicone resin Cov adhesion thiab kev tsim cov khoom siv tsis zoo, yog li SMP xim-coated steel daim hlau tsis haum rau lub sijhawm uas yuav tsum tau ua ntau yam txheej txheem, thiab yog feem ntau yog siv rau lub tsev ru tsev thiab sab nrauv phab ntsa.
High huab cua-resistant polyester (HDP, High check polyester)
Hais txog qhov tsis txaus ntawm PE thiab SMP, British HYDRO (tam sim no tau los ntawm BASF), Swedish BECKER thiab lwm tus tsim HDP polyester txheej uas tuaj yeem ua tiav 60-80% huab cua tiv thaiv ntawm PVDF txheej thaum ntxov 2000, thiab zoo dua li cov silicon hloov pauv qub.Polyester txheej, nws sab nraum zoov huab cua tsis kam mus txog 15 xyoo.Cov huab cua-resistant polyester resin siv monomers uas muaj cov qauv cyclohexane thaum lub sij hawm synthesis kom ua tiav qhov sib npaug ntawm qhov yooj, huab cua tsis kam thiab tus nqi ntawm cov resin.Non-aromatic polyols thiab polybasic acids yog siv los txo qhov nqus ntawm UV teeb los ntawm resin., kom ua tiav cov huab cua tsis kam ntawm cov txheej.
UV absorbers thiab hindered amines (HALS) ntxiv rau cov xim pleev xim los txhim kho huab cua tsis kam ntawm cov xim zaj duab xis.Cov huab cua-resistant polyester coil coatings tau lees paub los ntawm kev ua lag luam txawv teb chaws, thiab cov txheej txheem yog tus nqi zoo heev.
▲ Muaj kev lag luam
Non-ferrous hlau smelters (tooj liab, zinc, txhuas, txhuas, thiab lwm yam) nyob rau hauv metallurgy thiab hluav taws xob industries yog qhov nyuaj tshaj plaws rau cov kev pab cuam lub neej ntawm cov xim daim hlau.Steel nroj tsuag, fais fab nroj tsuag, thiab lwm yam kuj tsim corrosive media, uas yuav tsum tau ntau dua corrosion kuj rau cov xim daim hlau.
PVC plastisol (PVC Plastisol)
PVC resin muaj dej tsis kam thiab tshuaj lom neeg.Nws feem ntau yog pleev xim nrog cov ntsiab lus siab.Lub thickness ntawm txheej yog 100-300μm.Nws tuaj yeem muab cov txheej txheem PVC du lossis lub teeb embossing kho rau embossed txheej.;Txij li thaum PVC txheej zaj duab xis yog cov thermoplastic resin thiab muaj cov yeeb yaj kiab siab, nws tuaj yeem muab kev tiv thaiv zoo rau cov phaj hlau.Txawm li cas los xij, PVC muaj qhov tsis muaj cua sov.Nws feem ntau yog siv nyob rau hauv Tebchaws Europe thaum ntxov, tab sis vim nws cov khoom tsis zoo ib puag ncig, nws tam sim no siv tsawg dua.
Fluorocarbon PVDF hmoov
Vim yog lub zog sib zog ntawm cov khoom siv tshuaj lom neeg ntawm PVDF, txheej txheej muaj kev tiv thaiv corrosion zoo heev thiab khaws xim.Ntawm cov prepainted steel phaj txheej siv nyob rau hauv kev tsim kho kev lag luam, nws yog cov khoom siab tshaj plaws thiab muaj qhov hnyav molecular.Nws muaj cov qauv sib txuas ncaj qha, yog li ntxiv rau cov tshuaj tiv thaiv, nws kuj muaj cov khoom siv zoo heev, UV tsis kam thiab kub ua haujlwm.Raws li ib txwm muaj, nws lub neej tiv thaiv corrosion tuaj yeem ncav cuag 20-25 xyoo.Nyob rau hauv xyoo tas los no, fluorine-muaj resins copolymerized nrog chlorotrifluoroethylene thiab vinyl ester monomers tau dhau los ua neeg nyiam nyob hauv Suav teb thiab tau siv dav hauv kev tsim cov phab ntsa sab nrauv thiab hlau panels.Vim yog siv yooj yim hydrolyzable vinyl ester monomers thiab fluorine cov ntsiab lus, lawv yog 30% qis dua PVDF.Txog %, yog li muaj qee qhov sib txawv ntawm nws cov huab cua tsis kam thiab PVDF.PVDF cov ntsiab lus ntawm fluorocarbon txheej uas tsim los ntawm Baosteel yog tsis tsawg tshaj li 70% (tus so yog acrylic resin).
▲ Muaj kev lag luam
Cov khoom lag luam hauv kev lag luam chemical yog volatile thiab nquag tsim cov tshuaj tiv thaiv tsis zoo xws li acids lossis alkalis.Thaum raug dej, cov dej dewdrops tau yooj yim tsim thiab ua raws li qhov chaw ntawm cov xim phaj, corroding lub txheej ntawm cov xim phaj thiab tejzaum nws ntxiv corroding nws.mus rau zinc txheej los yog txawm lub steel phaj.
02 Kev sib piv cov lus sib txawv ntawm cov txheej txheem sib txawv
Muaj ob yam tseem ceeb tshaj plaws rau kev xaiv cov primers.Ib qho yog xav txog qhov adhesion ntawm primer, topcoat thiab substrate, thiab lwm yam yog tias cov primer muab feem ntau ntawm cov corrosion kuj ntawm txheej.Los ntawm qhov kev xav no, epoxy resin yog qhov kev xaiv zoo tshaj plaws.Yog tias koj xav txog kev yooj yim thiab UV tsis kam, koj tuaj yeem xaiv polyurethane primer.Rau cov txheej txheej sab nraub qaum, qhov kev xaiv zoo tshaj plaws yog xaiv ob txheej txheej yog cov xim-coated steel phaj yog siv los ua ib lub phaj, uas yog, ib txheej ntawm rov qab primer thiab ib txheej ntawm sab nraub qaum.Lub hauv paus xim yog tib yam li cov xim pem hauv ntej, thiab lub tsho sab saum toj yog ib txheej ntawm lub teeb xim (xws li dawb) polyester.Yog tias cov xim-coated steel phaj siv los ua cov khoom sib xyaw lossis cov vaj huam sib luag sandwich, nws txaus los thov txheej txheej ntawm epoxy resin rau sab nraub qaum nrog zoo adhesion thiab corrosion kuj.
03 Txheej gloss xaiv
❖ Glossiness tsis yog txheej txheej qhia.Ib yam li xim, nws tsuas yog sawv cev xwb.Qhov tseeb, xim (txheej) yog qhov yooj yim kom ua tiav siab gloss.Txawm li cas los xij, qhov siab-gloss nto yog glaring thiab qhov siab ntawm lub hnub ci thaum nruab hnub tuaj yeem ua rau lub teeb muaj kuab paug (ntau tus neeg tsis siv cov iav ntaub thaiv phab ntsa tam sim no vim yog lub teeb paug).Tsis tas li ntawd, lub siab-gloss nto muaj qhov sib txhuam me me thiab yooj yim rau plam, uas tuaj yeem ua rau muaj kev nyab xeeb yooj yim thaum siv lub ru tsev.;Thawj lub cim ntawm kev laus ntawm cov xim-coated steel daim hlau thaum siv sab nraum zoov yog poob ntawm gloss.Yog xav tau kev kho, nws yog ib qho yooj yim kom paub qhov txawv ntawm cov qub thiab tshiab steel daim hlau, ua rau cov tsos tsis zoo;Yog hais tias cov xim tom qab yog high-gloss, halo yuav yooj yim tshwm sim thaum muaj teeb nyob hauv tsev.Cov neeg ua haujlwm pom kev qaug zog.Yog li ntawd, nyob rau hauv ib txwm muaj xwm txheej, xim-coated steel daim hlau rau kev tsim kho siv nruab nrab thiab qis gloss (30-40 degrees).
04 Txheej thickness xaiv
Microscopically, lub txheej yog ib tug ntxeem tau qauv.Cov dej thiab corrosive media (chlorine ions, thiab lwm yam) nyob rau hauv cov huab cua yuav ntxeem tau los ntawm qhov tsis muaj zog ntawm cov txheej, ua rau corrosion nyob rau hauv zaj duab xis, thiab ces cov txheej yuav blister thiab tev tawm.Tsis tas li ntawd, txawm tias tib lub txheej tuab, cov txheej txheej thib ob yog denser dua li cov txheej txheem thawj.Raws li cov ntawv tshaj tawm txawv teb chaws thiab cov txiaj ntsig kev ntsuas corrosion cuam tshuam, txheej pem hauv ntej ntawm 20 μm lossis ntau dua tuaj yeem tiv thaiv kev nkag mus ntawm cov xov xwm corrosive.Txij li thaum cov txheej txheem tiv thaiv corrosion ntawm primer thiab topcoat sib txawv, tsis tsuas yog tag nrho cov zaj duab xis thickness yuav tsum tau teev, tab sis kuj primers yuav tsum tau cais (》5μm) thiab topcoat (》15μm).Tsuas yog nyob rau hauv txoj kev no tuaj yeem tiv thaiv corrosion ntawm qhov sib txawv ntawm cov xim-coated steel phaj yuav tsum tau ua kom sib npaug.
PVDF cov khoom xav tau cov txheej tuab dua.Vim hais tias nws yuav tsum tau muab ib tug ntev kev pab cuam lub neej lav.Cov kev xav tau rau txheej txheej yog nyob ntawm daim ntawv thov, nrog cov sandwich panels tsuas yog xav tau ib qho kev sib koom ua ke.Cov phaj hlau tsim kuj yuav tsum tau muaj ob txheej txheej txheej vim qhov chaw nyob sab hauv tsev corrosive.Lub thickness yog tsawg kawg yog 10μm.
Txheej xim xaiv (qhov tseem ceeb ntxiv!)
Qhov kev xaiv ntawm cov xim yog feem ntau raws li kev sib txuam nrog ib puag ncig ib puag ncig thiab tus tswv txoj haujlwm nyiam.Txawm li cas los xij, los ntawm ib qho kev pom zoo, cov xim xim xim muaj ntau cov xim xaiv.Cov xim tsis muaj zog tuaj yeem xaiv tau zoo dua qub (xws li titanium dioxide, thiab lwm yam), thiab cov xim muaj peev xwm ua kom pom kev muaj peev xwm muaj zog (qhov kev cuam tshuam coefficient yog ob zaug ntawm cov xim tsaus).Qhov kub ntawm cov txheej txheem nws tus kheej yog qhov tsis tshua muaj nyob rau lub caij ntuj sov, uas yog qhov zoo rau kev ncua lub neej ntawm txheej txheej.Tsis tas li ntawd, txawm tias cov txheej txheem hloov xim lossis hmoov, qhov sib txawv ntawm lub teeb-xim txheej thiab cov xim qub yuav me me, thiab qhov cuam tshuam ntawm cov tsos yuav tsis tseem ceeb.Cov xim tsaus nti (tshwj xeeb tshaj yog cov xim ci) feem ntau yog cov xim organic, uas yooj yim rau ploj thaum raug ultraviolet rays, thiab tuaj yeem hloov xim hauv tsawg li 3 lub hlis.Raws li cov ntaub ntawv ntsuas cuam tshuam, thaum sab nraud kub siab tshaj plaws thaum tav su hauv lub caij ntuj sov, qhov chaw dawb yog 10 degrees txias dua li xiav saum npoo thiab 19 degrees txias dua li cov xim dub.Cov xim sib txawv muaj peev xwm sib txawv los cuam tshuam lub hnub ci.
05 xim reflectivity reflection nyhuv
Rau cov xim-coated steel daim hlau, feem ntau cov thermal expansion nqi ntawm txheej thiab steel phaj yog txawv, tshwj xeeb tshaj yog cov linear expansion coefficients ntawm cov hlau substrate thiab cov organic txheej yog txawv heev.Thaum lub ambient kub hloov, qhov sib txuas ntawm lub substrate thiab txheej yuav hloov.Expansion lossis contraction stress tshwm sim, thiab yog tias tsis kho kom zoo, txheej tawg yuav tshwm sim.Baosteel tau ua qhov kev sim 8 xyoo nyob rau hauv Hainan ntawm tib hom xim, tib tus neeg muab xim, thiab xim sib txawv.Cov txiaj ntsig kuj tau lees paub tias cov xim xim xim muaj xim tsawg dua.
06 gloss xim txawv thawj thickness tam sim no thickness
Tsis tas li ntawd, ntawm no peb xav piav qhia ob qho kev nkag siab tsis zoo txog kev xaiv hauv kev lag luam hauv tsev tam sim no:
Ua ntej, tam sim no muaj coob tus dawb primers nyob rau hauv Suav teb.Lub hom phiaj ntawm kev siv cov primer dawb yog txo cov thickness ntawm topcoat, vim hais tias cov txheej txheem corrosion-resistant primer rau kev tsim kho yog daj-ntsuab (li no cov strontium chromate pigment), thiab yuav tsum muaj txaus topcoat thickness kom muaj zog zais zoo.Qhov no yog qhov txaus ntshai heev rau corrosion kuj.Ua ntej, cov primer muaj kev tiv thaiv corrosion tsis zoo, thiab qhov thib ob, lub tsho tiv no zoo heev thinned, tsawg dua 10 microns.Xws li cov xim-coated steel daim hlau zoo li ci, tab sis yuav corrode nyob rau hauv ntau qhov chaw (txiav, khoov, nyob rau hauv zaj duab xis, thiab lwm yam) nyob rau hauv tsawg tshaj li ob xyoos.
Qhov thib ob yog cov xim-coated steel daim hlau siv hauv kev tsim kho.Tib qhov project siv cov xim-coated steel daim hlau los ntawm cov tuam txhab sib txawv thiab cov khoom sib txawv.Cov xim zoo li zoo ib yam thaum lub sij hawm tsim kho, tab sis tom qab ob peb xyoos ntawm tshav ntuj raug, cov xim ntawm cov txheej txheem sib txawv thiab cov chaw tsim khoom hloov.Muaj ntau ntau cov piv txwv ntawm cov qauv sib txawv ua rau muaj xim sib txawv loj.Txawm hais tias cov khoom yog los ntawm tib tus neeg muag khoom, nws raug pom zoo kom tso ib qho kev txiav txim rau tib qhov project ib zaug, vim cov lej sib txawv tuaj yeem siv cov khoom los ntawm cov khoom siv txheej txheej sib txawv, ua rau muaj qhov sib txawv ntawm cov xim sib txawv.
Kev xaiv cov khoom tsim nyog tuaj yeem ua tsis tau tsuas yog ua kom lub neej ua haujlwm ntawm lub tsev, tab sis kuj txo cov nqi, yog li tiag tiag yog ib puag ncig tus phooj ywg thiab kev txuag nyiaj.
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Taishan Industrial Development Group Co., Ltd.
Peb yuav ib txwm ua raws li cov kev pabcuam tenet ntawm qhov zoo ua ntej thiab cov neeg siv khoom ua ntej, muab cov neeg siv khoom zoo tshaj plaws, thiab ua peb qhov zoo tshaj plaws kom txuag tau cov nqi rau cov neeg siv khoom.Nyob ntawm kev siv ib puag ncig ntawm cov khoom siv thiab tus nqi ntawm kev tsim vaj tsev, peb pom zoo kom siv cov nqi zoo dua Taishan Inc xim txheej, Maanshan Hlau thiab Hlau xim txheej thiab Shougang xim txheej.Ordinary PE khoom siv tau tsawg kawg yog 10 xyoo, thiab cov khoom PVDF tuaj yeem kav ntev li 20 txog 25 xyoo.Zoo nkauj thiab ruaj khov, nws ua rau koj lub Hoobkas zoo nkauj dua.Peb lub tuam txhab muab kev tsim khoom ib zaug, kev ua, thiab kev muag khoom, pab cov neeg siv khoom thoob plaws tag nrho cov txheej txheem los ntawm cov neeg siv khoom nug mus rau tom qab daim ntawv thov.
Post lub sij hawm: Sep-21-2023