Cov kav hlau yuav raug corroded thiab puas los ntawm ib puag ncig hauv huab cua lossis faus hauv av. Txhawm rau tiv thaiv kev xeb thiab kev puas tsuaj ntawm cov kav dej hlau, cov txheej txheem tiv thaiv corrosion thiab cov txheej txheem tiv thaiv cathodic feem ntau yog siv los tiv thaiv cov kav dej. Kev ua haujlwm ntawm cov txheej txheem tiv thaiv corrosion sab nraud yog cais tawm thiab thaiv qhov chaw ntawm cov yeeb nkab steel los ntawm ib puag ncig ib puag ncig kom ua tiav lub hom phiaj ntawm inhibiting corrosion. Kev tiv thaiv Cathodic ua haujlwm los ntawm kev txo cov peev txheej corrosion. Ntawd yog, thaum lub faus steel yeeb nkab raug nthuav tawm thiab corroded, corrosion electrons yog thawj zaug muab los ntawm cathodic tiv thaiv tam sim no es tsis txhob ntawm cov hlau hauv cov yeeb nkab steel. Ua li no, lub hom phiaj ntawm kev tiv thaiv electrochemical yog tiav. Hais txog lub luag haujlwm ntawm cov txheej txheem tiv thaiv kev tiv thaiv sab nraud thiab kev tiv thaiv cathodic, feem ntau cov kws tshaj lij ntseeg tias cov txheej txheem tiv thaiv sab nraud yog qhov tseem ceeb, suav txog 99%, thiab kev tiv thaiv cathodic yog pab.
Thaum lub txheej txheej tiv thaiv corrosion ntawm cov kav dej faus yog tag nrho ntawm qhov, kev tiv thaiv cathodic yuav tsis tuaj yeem ua nws lub luag haujlwm thiab tej zaum yuav muaj qhov tsis zoo, xws li cathodic stripping.
Taw qhia rau ntau qhov kev siv cov raj xa dej los tiv thaiv corrosion hauv cov roj teb
Petroleum asphalt anti-corrosion txheej:
Cov roj av asphalt anti-corrosion txheej yog txheej sab nraud los tiv thaiv corrosion rau faus cov kav dej ua los ntawm cov roj av asphalt-impregnated iav fiber ntau qhwv ib ncig ntawm nws. Nws yog feem ntau siv cov kav dej npog cov khoom siv. Nws qhov zoo yog qhov dav ntawm cov khoom siv raw, cov cuab yeej paub tab thiab tus nqi qis. Nws qhov tsis zoo yog qhov nqus dej. Nws yog qhov loj, tiv taus qhov kub sib txawv, yooj yim rau hnub nyoog, muaj cov kab mob tsis zoo, thiab yooj yim puas los ntawm cov hauv paus hniav ntawm reeds thiab lwm yam nroj tsuag.
Fusion bonded epoxy hmoov anti-corrosion txheej
Fused epoxy hmoov (FBE) yog ib txheej txheej txheej ntawm epoxy resin, curing agent, muab tub lim thiab xim. FBE anti-corrosion txheej muaj zog adhesion rau steel yeeb nkab, superior corrosion kuj thiab zoo mechanical zog. Qhov tsis zoo yog qhov nqus dej siab, txwv tsis pub muaj kev cuam tshuam, kev xeb tshem tawm siab, thiab tus nqi siab.
Epoxy coal pitch anti-corrosion txheej:
Epoxy coal tar pitch txheej yog ob txheej txheej txheej uas muaj epoxy resin, thee tar pitch, curing agent, muab tub lim, thiab lwm yam. Nws tau siv hauv kuv lub teb chaws txij li xyoo 1970, thiab kev ua haujlwm kub yog - 20 ~ 100 degree. Nws qhov kev ua tau zoo yog nruab nrab ntawm cov thee tar enamel, sintered epoxy hmoov thiab polyethylene, thiab nws yog dav siv nyob rau hauv roj av thiab dej cov dej num hauv kuv lub teb chaws. Vim muaj kev tiv thaiv ib puag ncig, nws daim ntawv thov tau raug txwv rau qee yam hauv xyoo tas los no.
3PE tiv thaiv corrosion txheej
3PE anti-corrosion txheej, thawj tsim thiab launched los ntawm lub teb chaws Yelemees nyob rau hauv lub xyoo 1980s, combines cov anti-corrosion zog ntawm sintered epoxy hmoov nrog cov neeg kho tshuab khawb tiv thaiv cov khoom ntawm polyethylene kom nws ua tau zoo dua. Nws muaj pes tsawg leeg yog: epoxy hmoov txheej primer + copolymer nplaum txheej + polyethylene txheej tiv thaiv txheej.
Qhov zoo ntawm cov txheej txheem tiv thaiv corrosion no yog cov rwb thaiv tsev siab, muaj zog adhesion, zoo txhua yam khoom xws li kev cuam tshuam thiab hnav tsis kam, tsis kam mus rau hauv paus nkag mus rau hauv cov nroj tsuag, thiab tshuaj lom neeg ruaj khov. Yog li ntawd, nws yog qhov tsim nyog rau cov kav dej hauv ntau qhov chaw nrog hnyav nteg thiab kev tsim kho. Txawm li cas los xij, tus nqi ntawm cov txheej txheem tiv thaiv corrosion yog siab, thiab nws muaj cov kev xav tau siab ntawm kev kho deg thiab txheej txheej txheem ntawm cov kav hlau. Lub patching ntawm anti-corrosion txheej yog qhov nyuaj, thiab cov txheej txheem kev tsim kho yuav tsum tau tswj nruj me ntsis kom ntseeg tau tias nws zoo.
Polyethylene nplaum daim kab xev los tiv thaiv corrosion txheej
Lub ntsiab zoo ntawm polyethylene nplaum daim kab xev yog siab rwb thaiv tsev tsis kam, zoo tsis kam mus rau stray tam sim no thiab yooj yim siv. Qhov tsis zoo yog tias nws muaj cov av tsis zoo rau kev ntxhov siab. Cov txheej tiv thaiv corrosion no yog tsim rau kev kho cov kav dej thiab cov yeeb nkab haum los tiv thaiv corrosion.
