Lub luag haujlwm tseem ceeb los tiv thaiv xeb xim yog los tiv thaiv xeb hlau thiab txhim kho kev tiv thaiv xim ntawm cov xim hlau. Lub luag haujlwm ntawm cov tshuaj pleev xim rau xeb tuaj yeem muab faib ua ob yam: lub cev tiv thaiv xeb thiab tshuaj xeb tawm tsam, ntawm cov tshuaj tawm tsam los tiv thaiv xeb tuaj yeem muab faib ua ob hom: cov tshuaj tiv thaiv xeb thiab electrochemical.
1. Lub cev tiv thaiv xeb xim
Lub cev tiv thaiv xeb xim siv nws cov lus zoo los sau cov xim zaj duab xis qauv, txhim kho qhov ntom ntawm cov xim zaj duab xis, ua lub luag haujlwm tiv thaiv, txo cov xim permeability, thiab yog li ua lub luag haujlwm hauv kev tiv thaiv xeb, xws li hlau oxide liab, hmoov txhuas , Cov iav flakes, etc. Hlau liab, tseem hu ua hlau oxide liab, muaj cov khoom ruaj khov, muaj zog zais zog thiab cov nplais zoo, uas tuaj yeem ua lub luag haujlwm zoo hauv cov xim tha xim. Nws muaj cov cua kub zoo thiab lub teeb tsis kam, thiab nws ruaj khov rau cov cua, alkalis thiab dilute acids. Epoxy primers siv feem ntau.
Mica iron oxide, uas nws cov tshuaj lom neeg yog hlau trioxide, muaj tshuaj lom neeg zoo. Cov nplai tsim nyob rau hauv txheej txheej yog teem los tsim cov txheej txheem txoj hauv kev thiab cov kab ntau dhau los ntawm cov xim, uas ua rau cov ntawv tsis yooj yim thiab nkag mus ntawm cov ntawv xov xwm corrosive kuj tsim txom thiab nyuaj. Nkag mus rau hauv txheej. Ntxiv mus, nws tuaj yeem siv cov xim pleev xim rau sab saum toj txhawm rau txhim kho huab cua tiv thaiv, xws li epoxy mica intermediate xim.
2. Tshuaj txhuam cov tshuaj pleev xim rau xim
(1) Tshuaj tiv thaiv corrosion-inhibiting los tiv thaiv xeb xim
Cov tshuaj tiv thaiv xeb nrog cov tshuaj tiv thaiv xeb ua rau cov tshuaj tiv thaiv cov tshuaj tiv thaiv kom hloov pauv cov khoom ntawm thaj chaw lossis cov yam ntxwv ntawm cov khoom siv tshuaj tiv thaiv kom ua tiav lub hom phiaj tiv thaiv xeb. Cov tshuaj pleev xim rau cov xeb nrog cov tshuaj lom neeg tiv thaiv xaj tuaj yeem cuam tshuam nrog cov hlau xws li passivation thiab phosphating los ua cov yeeb yaj kiab saum npoo av tshiab, cov ntawv hla ntawm cov duab, thiab cov phosphate. Cov electrode muaj peev xwm ntawm cov yeeb yaj kiab no zoo dua li ntawm cov hlau qub, yog li cov hlau txheej ib feem lossis tag nrho zam qhov ua tau los ua qhov tsis ua haujlwm; Tsis tas li ntawd, muaj ntau ntau micropores ntawm zaj duab xis, uas yog qhov zoo rau pleev xim adhesion. Cov tshuaj siv rau cov tshuaj lom neeg cov tshuaj pleev xim dawb muaj xws li tshuaj pleev xim txhuas, butyric acid muag xim, thiab phosphate pigments
Zinc Butyrin tsuas yog siv hauv Butyrate Antirust Xim, thiab cov khoom tseem ceeb yog Zinc Butyrate. Nws yog qhov feem ntau siv los tiv thaiv xeb xim ntawm cov butyrates. Nws yog tsuas yog siv los ua cov xim los tiv thaiv xeb rau lub teeb hlau xws li txhuas thiab magnesium. Ntawm chav kawm, nws kuj tseem tuaj yeem siv los tiv thaiv xeb ntawm cov hlau. Cov tshuaj tiv thaiv xeb ntawm zinc butyrate yog kom passivate hlau saum npoo, yog li inhibiting xeb thiab ua tiav lub hom phiaj tiv thaiv xeb.
(2) Electrochemical kev txiav txim hom tiv thaiv xeb xim
Qhov tseem ceeb tshaj plaws los tiv thaiv xeb xim nrog electrochemical nyhuv yog zinc hmoov. Cov tshuaj pleev xim anticorrosive nrog zinc hmoov raws li xim, xws li epoxy zinc-nplua nuj primer, tsim cov txheej txheem tiv thaiv zoo xim nyob rau ntawm cov hlau. Tshuaj lom neeg cov tshuaj tiv thaiv ntawm zinc cov ntawv ua cov kav ntsev thiab cov zinc ua rau ntawm cov xim txheej. Cov khoom no muaj qhov tsis txaus ntseeg uas ua rau cov dej tsis ruaj khov thiab ua rau cov nplaim hluavtaws txheej los tiv thaiv qhov xeb ntawm oxygen, dej thiab ntsev. Yuav kom tiv thaiv xeb tawm, cov hlau tiv thaiv.
