Vim li cas cov yeeb nkab steel xav tau kev tiv thaiv corrosion? Raws li lub npe qhia, nws yog los tiv thaiv cov kav hlau los ntawm kev xeb thiab ua kom lawv lub neej ua haujlwm ntev. Hauv cov kav dej xa mus rau kev thauj cov roj, dej, roj av, thiab lwm yam, cov kav dej steel feem ntau yog siv los ua cov khoom siv hluav taws xob. Txawm li cas los xij, cov khoom muaj pes tsawg leeg thiab tshuaj lom neeg ntawm qee cov kav hlau txiav txim siab tias lawv tsis muaj kev tiv thaiv corrosion ntev, ua rau lawv lub neej ua haujlwm luv. Qhov teeb meem no tshwm sim tsis hais seb cov kav dej puas tau faus hauv av lossis saum taub hau. Yog li, yuav daws qhov teeb meem no li cas? Tom qab ntawd, tib neeg tau tsim txheej txheej sab nrauv lossis sab hauv phab ntsa ntawm cov kav hlau steel nrog cov khoom siv tshuaj tiv thaiv kom zoo tswj thiab tiv thaiv corrosion.
Tam sim no, lub ntsiab anticorrosive txheej rau steel kav muaj xws li:
Roj pleev xim
Roj pleev xim yog hom txheej txheej nrog cov roj qhuav ua cov khoom siv ua yeeb yaj kiab. Nws yog qhov yooj yim los tsim, muaj cov txhuam zoo thiab ntub dej, thiab yog tus nqi qis nrog cov xim hloov tau yooj yim. Txawm li cas los xij, nws cov xim zaj duab xis qhuav maj mam, mos, muaj cov khoom siv tsis zoo, thiab tsis tiv taus cov kua qaub, alkalis, dej, lossis cov kuab tshuaj organic. Cov roj qhuav yog feem ntau ua ke nrog xeb-tiv thaiv pigments los ua xeb-tiv thaiv xim rau siv nyob rau hauv atmospheric ib puag ncig uas tsis muaj corrosion kuj.
Suav Lacquer (Raw Lacquer)
Kuj hu ua raw lacquer lossis loj lacquer, nws yog tshwj xeeb rau Suav teb. Raw lacquer yog cov kua mis dawb dawb uas tau txais los ntawm kev txiav cov tawv ntoo ntawm cov ntoo lacquer thiab lim tawm cov impurities. Thaum ua ntawv thov rau ib qho khoom nto, nws cov xim hloov sai sai los ntawm dawb mus rau xim liab thiab tom qab ntawd ntshav, nws thiaj li dhau los ua ib qho tawv thiab ci xim dub xim zaj duab xis lub sijhawm. Urushiol yog cov khoom tseem ceeb ntawm raw lacquer, accounting rau 30-70% (qhov siab dua cov ntsiab lus urushiol, qhov zoo ntawm raw lacquer zoo). Suav lacquer muaj zog adhesion, tawv xim zaj duab xis, zoo gloss, thiab tsis kam mus rau av corrosion, dej, thiab roj. Txawm li cas los xij, nws yog tshuaj lom thiab tuaj yeem ua rau tawv nqaij ua xua. Tsis tas li ntawd, nws tsis tiv taus oxidants muaj zog thiab tsis muaj alkali tsis kam.
Phenolic Resin Xim
Xws li cawv-soluble phenolic resin, hloov phenolic resin, thiab ntshiab phenolic resin. Cawv-soluble phenolic resin xim muaj kev tiv thaiv corrosion zoo tab sis raug kev txom nyem los ntawm kev tsis yooj yim hauv daim ntawv thov, tsis yooj yim, thiab tsis muaj zog adhesion, txwv tsis pub siv. Phenolic resin feem ntau xav tau kev hloov kho thaum siv. Piv txwv li, rosin-hloov phenolic resin refined nrog tung roj thiab tov nrog ntau yam pigments tuaj yeem ua rau hauv ntau yam xim hlau nplaum. Cov xim no muaj cov xim tawv tawv, tsis tshua muaj nqi, thiab siv dav hauv cov rooj tog zaum thiab qhov rooj / qhov rai. Pure phenolic resin xim muaj zog adhesion, dej tsis kam, noo noo tsis kam, kub tsis kam, corrosion kuj, thiab zoo weatherability.
Epoxy Resin Xim
Epoxy xim muaj adhesion zoo rau hlau, pob zeb, ntoo, iav, thiab lwm yam ntaub ntawv, zoo heev alkali tsis kam, thiab zoo rwb thaiv tsev zog. Txawm li cas los xij, nws muaj qhov tsis zoo rau kev laus. Epoxy anticorrosive xim feem ntau muaj epoxy resin thiab tus neeg sawv cev kho, thiab qhov xwm txheej ntawm tus neeg saib xyuas cuam tshuam rau cov xim zaj duab xis cov khoom. Epoxy resin xim yog ib qho txheej txheem txheej txheej siv epoxy resin ua cov khoom ua yeeb yaj kiab. Piv rau cov xim epoxy dav dav, hom no muaj cov nqi qis dua tab sis tsis zoo alkali tsis kam. Nws yog feem ntau siv rau ntau yam hlau primers nyob rau hauv tshuaj nroj tsuag thiab raws li anticorrosive xim rau cov khoom siv sab nraum zoov.
Polyurethane xim
Polyurethane resin siv nyob rau hauv anticorrosive xim feem ntau muaj ob yam: isocyanate pawg (-NCO) thiab hydroxyl pawg. Polyurethane (PU) yog tsim los ntawm kev sib xyaw thiab ua rau ob qho khoom siv no thaum siv. PU xim muaj lub cev zoo thiab cov khoom siv kho tshuab zoo, nrog cov tawv tawv, yoog raws, ci ntsa iab, tag nrho, hnav-tiv taus, muaj zog nplaum, corrosion-resistant, roj-resistant, acid-resistant, tshuaj-resistant, thiab muaj pa-resistant xim films. Nws cov alkali tsis kam yog me ntsis qis dua epoxy xim tab sis muaj kev laus zoo dua. Nws feem ntau yog siv los ua ib qho topcoat los yog primer. PU resin tuaj yeem sib xyaw nrog ntau yam resins, tso cai rau kev hloov kho cov mis kom tau raws li ntau yam kev xav tau. Nws tuaj yeem kho tau ntawm chav tsev kub lossis cua sov, txawm tias qhov kub thiab txias (0 degree ). Txawm li cas los xij, qhov ruaj khov ntawm cov khoom siv polyisocyanate tsis zoo, yuav tsum muaj kev sib cais ntawm cov dej noo thiab kev tiv thaiv los ntawm khov. PU xim yog kim tab sis muaj lub neej ua haujlwm ntev.
Ntev fiber ntau FRP Reinforced Epoxy hauv ob sab phlu
Siv cov txheej txheem tshwj xeeb embedded hauv ob sab phlu los tsim cov khoom siv tiv thaiv corrosion hauv cov kav hlau. Cov khoom siv no cais cov kua dej thiab cov roj corrosive los ntawm cov kav dej steel, muab cov txheej txheem sab hauv los tiv thaiv kab mob rau cov kav dej steel thiab cov kav dej. Rau kev puas tsuaj downhole ntau lawm tubing los yog subsea pipelines, hloov cov nqi yog siab. Cov ntaub ntawv no muaj kev tiv thaiv corrosion zoo tshaj hauv cov cheeb tsam hnyav, tsis sib xws los ntawm lwm cov khoom.
Polyethylene thiab Polypropylene Resin Paints
Polyethylene resin anticorrosive xim yog cov xim pleev xim ua los ntawm monomer resins. Polyethylene txheej yog dav tsim thiab siv. Polyethylene pipeline coatings muaj zog corrosion kuj, siab mechanical zog, zoo heev waterproofing, ruaj khov zoo, yooj yim siv, zoo applicability, thiab environmental friendliness. PE muaj qhov nqus dej tsawg (tsawg dua 0.01%), siab epoxy zog, tsis tshua muaj PE dej nqus, zoo kub yaj nplaum nplaum, thiab siab tiv thaiv corrosion. Txawm li cas los xij, nws cov nqi siab dua li lwm cov ntaub ntawv sib koom ua ke. Cov ntaub ntawv raw rau cov xim no muaj ntau thiab tau siv dav hauv kev tiv thaiv corrosion.
Furan Resin Xim
Furan resin xim yog resistant rau ntau yam uas tsis yog-oxidizing inorganic acids, electrolyte daws, thiab organic solvents. Nws cov alkali kuj tseem zoo heev, tab sis nws cov oxidation kuj tsis zoo. Cov furan resin series ntawm cov xim pleev xim muaj xws li furfuryl cawv xim, furfural acetone formaldehyde xim, thiab hloov xim furan resin.
Roj Hmab Xim
Roj hmab anticorrosive xim yog tsim los ntawm chemically kho los yog mechanically processed natural los yog hluavtaws roj hmab, nrog cov kuab tshuaj, fillers, pigments, thiab catalysts ntxiv.
Asphalt Xim
Asphalt yog ib qho tseem ceeb ntawm cov txheej txheem anticorrosive, nrog cov thee tar pitch yog qhov zoo tshaj plaws. Coal tar pitch xim yog tus nqi qis thiab muaj dej tsis kam. Tom qab muab tso rau hauv dej rau kaum xyoo, nws qhov nqus dej tsuas yog {{0}}.1% rau 0.2%. Nws muaj peev xwm tiv taus qee cov tshuaj lom neeg, muaj qhov ntub dej zoo ntawm cov hlau tsis zoo nrog kev tshem tawm xeb tsis tiav, cov ntsiab lus siab rau cov yeeb yaj kiab tuab, thiab tus nqi qis. Txawm li cas los xij, nws ua nkig nyob rau lub caij ntuj no thiab muag thaum lub caij ntuj sov. Kev cuam tshuam tuaj yeem ua rau qee cov khoom ua kom tsis muaj zog thiab khiav tawm, ua rau cov xim zaj duab xis tawg. Cov teeb meem no tuaj yeem txhim kho los ntawm kev ntxiv lwm cov resins. Piv txwv li, ntxiv chlorinated roj hmab txhim kho cov khoom ziab ntawm asphalt xim, hais txog cov teeb meem ntawm lub caij ntuj no brittleness thiab lub caij ntuj sov softness. Epoxy asphalt xim ua los ntawm epoxy resin ua ke nrog qhov zoo ntawm asphalt thiab epoxy xim, ua tiav cov txiaj ntsig zoo hauv kev tiv thaiv corrosion. Cov xim asphalt tau siv rau hauv cov thawv hauv qab, lub nkoj hulls, cov rooj vag dock, cofferdams, thiab lwm yam., nrog rau cov nyhuv anticorrosive zoo.
Heavy-duty Anticorrosive xim
Heavy-duty anticorrosive xim yog ib hom txheej uas muaj kev tiv thaiv corrosion ob peb zaug ntau dua li cov xim zoo tib yam anticorrosive nyob rau hauv hnyav corrosion. Nws yog tus cwj pwm los ntawm kev tiv thaiv corrosion zoo rau ntau yam xov xwm, kev ua haujlwm zoo, thiab kev pabcuam lub neej ntev tshaj li ob peb xyoos. Nws yog feem ntau siv hauv cov qauv marine, cov cuab yeej siv tshuaj, cov tank cia, thiab cov kav dej.
