Cov hom niaj hnub saum toj kawg nkaus siv rau cov xim coated steel ntawv yogpolyester txheej (PE), fluorocarbon txheej (PVDF), silicon hloov txheej (SMP), siab huab cua resistant txheej (HDP), acrylic txheej,Polyurethane txheej (PU), plastisol txheej (PVC), thiab lwm yam.
Cov tsho tiv no feem ntau yog PE, SMP, HDP thiab PVDF txheej.
1.PEtxheej txheej yog luv rau Polyester txheej, uas muaj cov nplaum zoo rau cov khoom siv, thiab ua rau cov xim coated steel ntawv tau yooj yim ua thiab tsim. Vim tias tus nqi pheej yig thiab ntau yam xim thiab ci, hom txheej no yog siv dav hauv ntau cov khoom.Qhov substrate yuav yog kub duav galvanized hlau, kub duav galvalume steel. Lub neej ncua, hauv ib puag ncig ib puag ncig, tuskev tiv thaiv corrosion lub sijhawm tuaj yeem ntev npaum li 10-12 xyoos.
2.SMPtxheej txheej yog luv rau Silicone Mobified Polyester txheej. Vim cov polyester muaj cov pab pawg nquag -OH / -COOH, nws yooj yim reacted nrog lwm cov tshuaj macromolecular. Hloov PE tiv taus tiv tshav ntuj thiab hmoov, thiab yog qhov tsis zoo los ntawm Silicone resin muaj cov xim zoo nkauj thiab lub tshav kub tsis kam. Lub neej ncua, SMP muab zoo dua ua tau ntev rau cov steel sheetand tuskev txhim kho corrosion yuav nyob ntev rau 12-15 xyoo.
3.HDPtxheej yog luv rau High-durability Polyester txheej.Qhov siab huab cua polyester cob yog tsim los ntawm kev siv monomer uas muaj cov qauv cyclohexane kom ua tiav qhov hloov tau, huab cua tsis kam thiab tus nqi ntawm cov cob, thiab cov tsis muaj ntxhiab tsw polyol thiab polybasic acid siv txhawm rau kom txo qhov nqus ntawm UV teeb los ntawm cov cob. Yuav kom ua tiav huab cua tiv thaiv ntawm txheej. UV txheej thiab hindered amines (HALS) tau ntxiv rau txheej txheej tsim kom txhim kho huab cua tiv thaiv cov yeeb yaj kiab. Kev nyab xeeb siab ntawm cov huab cua polyester coil tau pom zoo hauv kev ua lag luam sia mus thoob ntiaj teb, thiab qhov ua tau zoo ntawm qhov kev tsho tiv no yog qhov tseem ceeb heev. Lub neej ncua, txheej txheej no muaj qhov tawm sab nraudhuab cua tsis kam ntawm 15-20 xyoo.
4.PVDFtxheej txheej yog luv rau Polyvinylidene fluoride.Qhov rau lub zog daim ntawv cog lus sib raug zoo ntawm cov ntawv cog lus sib txuas thiab cov ntawv cog qoob loo ntawm PVDF, txheej txheej tau zoo corrosion thiab xim tuav tseg, uas ua rau PVDF txheej ua tau zoo tshaj plaws hauv cov xim txheej steel siv kev lag luam. .Qhov hnyav lub cev muaj qhov hnyav thiab qhov qauv ncaj qha hom qauv, yog li ntxiv rau tshuaj lom neeg tsis kam, cov cuab yeej lub zog, tiv thaiv ultraviolet thiab kub tsis kam kuj tseem muaj qhov cuam tshuam. Lub neej ncua, PVDF txheej muaj sab nraum zoovhuab cua tsis kam ntawm 25-30 xyoo.
