Nyob rau hauv kev lag luam sab nraum zoov txheej, fading, chalking, cracking, thiab tev ntawm cov xim zaj duab xis yog cov teeb meem loj tshwm sim los ntawm kev laus ntawm cov hlau workpieces. Ntshiab polyester hmoov txheej, nrog rau lawv cov huab cua zoo heev, tau dhau los ua cov khoom siv zoo tshaj plaws rau txhuas profiles, guardrails, photovoltaic brackets, sab nraum zoov hardware, thiab lwm yam khoom siv. Lawv cov huab cua tsis zoo tsis yog vim qhov zoo ntawm ib qho khoom siv, tab sis rau kev sib xyaw ua ke ntawm cov khoom siv raw khoom, kev ua haujlwm ntxiv, thiab cov txheej txheem kho kom ruaj khov, ua kom ntev ntev - tiv thaiv ultraviolet hluav taws xob, los nag, kub, av noo, thiab huab cua phem.
Lub hauv paus tseem ceeb nyob hauv cov qauv molecular tsim ntawm huab cua -resistant polyester resin. Tsis zoo li cov resins zoo tib yam, ntshiab polyester resin molecules tsis muaj yooj yim aging benzene nplhaib qauv; lawv ob daim ntawv cog lus yog ruaj khov thiab muaj zog heev UV tsis kam. Nyob rau hauv lub hnub ci muaj zog sab nraum zoov, cov txheej txheej zoo tib yam molecules yooj yim zom thiab decompose, ua rau chalking thiab fading. Txawm li cas los xij, cov qauv ntshiab polyester resin molecular muaj zog thiab tsis yooj yim tawg los ntawm ultraviolet hluav taws xob, hauv paus tiv thaiv cov xim zaj duab xis aging thiab tsis ua hauj lwm, ua kom lub sij hawm ntev - xim thiab gloss tuav, thiab ua rau nws haum rau hnyav tej yam kev mob ntawm lub xyoo - puag ncig sab nraum zoov raug.
Qhov sib ntxiv ntawm huab cua ua haujlwm -cov tshuaj tiv thaiv ntxiv ntxiv txhim kho kev tiv thaiv kev ua haujlwm. Thaum lub sij hawm txheej txheej txheej txheem txheej txheem, cov khoom siv ntxiv xws li UV absorbers, lub teeb stabilizers, thiab cov tshuaj tiv thaiv antioxidants raug ntxiv. UV absorbers cuam tshuam thiab nqus cov teeb meem ultraviolet rays los ntawm lub hnub ci, hloov lawv mus rau hauv lub zog tsis muaj cua sov. Lub teeb stabilizers inhibit yees duab- oxidation cov tshuaj tiv thaiv hauv txheej txheej, ua kom cov txheej txheem kev laus qeeb. Antioxidants tiv thaiv oxidation thiab deterioration ntawm txheej nyob rau hauv kub thiab av noo tej yam kev mob. Cov nyhuv synergistic ntawm ntau yam additives zoo daws cov teeb meem tshwm sim hauv cov txheej sab nraud xws li poob gloss, discoloration, thiab tawg.
Txoj kev sib sib zog nqus- txuas thiab kho zaj duab xis- txheej txheem tsim yog qhov tseem ceeb rau kev ua tiav huab cua tiv thaiv zoo. Tom qab electrostatic txau thiab adsorption, ntshiab polyester hmoov txheej yog kho ntawm qhov kub thiab txias kom tsim tau ib qho chaw ruaj khov peb -dimensional cross- txuas network qauv. Cov txheej txheem kho yog ntom ntom thiab tsis yog- ntxeem tau, nrog cov khoom sib khi zoo heev, tiv thaiv dej nag, dej noo, kua qaub los nag, cov pa roj carbon monoxide, thiab lwm yam xov xwm corrosive los ntawm kev nkag mus rau hauv cov substrate thiab txheej sab hauv, tshem tawm cov teeb meem tev thiab flaking los ntawm kev tawm erosion, thaum tseem txhim kho cov txheej txheem huab cua tiv thaiv thiab kub.
Piv rau epoxy thiab zoo tib yam polyester hmoov, ntshiab polyester hmoov tsis muaj yellowing txaus ntshai, slows huab cua degradation, thiab muaj superior tag nrho sab nraum zoov kev ua tau zoo. Los ntawm cov khoom siv raw molecule optimization thiab auxiliary agent tiv thaiv kom siab -kub zaj duab xis tsim thiab xauv, huab cua ua tiav - tiv thaiv kev tiv thaiv yog tsim los ntawm txheej txheej txheej txheem, ua kom nws siv tau ntau xyoo. Qhov no txo qis tus nqi ntawm kev kho dua tshiab thiab tswj cov khoom siv sab nraum zoov thiab tau siv dav hauv cov txheej txheem sab nraum zoov xws li cov ntaub thaiv tsev, cov chaw hauv nroog, thiab cov khoom siv hluav taws xob tshiab.