Titanium anode rau electrophoretic txheej

Dab tsi yog Titanium anode rau electrophoretic txheej?

Titanium anodesfeem ntau yog siv nyob rau hauv electrophoretic txheej txheej txheem, ib hom ntawm electrochemical deposition txheej txheem. Thaum lub sij hawm electrophoretic txheej, cov anode yog siv los nyiam cov khoom tsis zoo rau saum npoo ntawm lub substrate. Tom qab ntawd cov khoom tsis zoo raug tshem tawm hauv cov txheej txheem txheej thiab kos rau lub anode, qhov chaw uas lawv tau muab tso rau ntawm lub substrate. Nws yog ib qho kev xaiv nrov hauv cov txheej txheem electrophoretic vim nws yog corrosion resistant, tsis tshua muaj hluav taws xob tsis kam, thiab yog pheej yig.

Parameter xav tau

Automotive txheej tshuab: Titanium anode systems hauv cathodic electrophoresis

Cathodic electrophoresis yog txheej txheej txheej txheem uas feem ntau siv hauv lub cev lub cev tsim khoom, thiab nws yog lub ntsiab lus tseem ceeb los txhim kho lub neej kev pabcuam (corrosion resistance) ntawm lub cev lub cev. Hauv cathodic electrophoresis, cov xim electrophoretic siv yog cationic (zoo them) resin thiab pigment paste, thiab cov khoom coated (lub cev) yog siv los ua cathode. Thawj cov tshuaj tiv thaiv ntawm cathode yog cov electrolysis ntawm dej los tsim hydrogen thiab hydroxide ions (OH-), cov tshuaj tiv thaiv no ua rau muaj kev cuam tshuam ntau tshaj ntawm cov txheej txheem ntawm cathode nto, tso cai rau cov khoom zoo rau agglomerate ntawm cathode, cations (resins. thiab pigments) ) reacts nrog hydroxide ions (OH-) los tsim txheej deposition.

Organic acids tsis tu ncua tsim nyob rau hauv thaj tsam anode:

Yog tias cov kua qaub no tsis raug tshem tawm hauv lub sijhawm, lawv yuav nkag mus rau hauv da dej kom txo tus nqi pH, cuam tshuam rau kev ruaj ntseg ntawm cov txheej txheem tsis, cuam tshuam rau kev nkag mus thiab txheej txheej, thiab ua kom cov resolubility. Muaj ob txoj hauv kev los tshem tawm cov kua qaub dawb los ntawm da dej: ntxiv ib qho kev tsis sib haum xeeb lossis ib nrab nruab nrab ntawm cathodic electrocoat thiab siv lub tshuab anode diaphragm. Txoj kev anode diaphragm system feem ntau yog siv, tshwj xeeb tshaj yog nyob rau hauv loj cathodic electrophoretic txheej kab.

Kev sib xyaw ntawm qhov system anode

Lub anode system muaj ob ntu: ib qho anolyte system thiab anode fais fab mov. Lub anolyte system yog qhov tseem ceeb ntawm lub anode system. Nws muaj cov anode diaphragm system, anolyte round-trip ncig pipeline, lub twj tso kua mis, lub tank anolyte, ib tug conductivity, thiab turbidity controller, ib tug Deionized dej pipeline, thiab lwm yam khoom.

Lub anode diaphragm system yog kaw lub anode ntawm lub hau anode washable. Lub hau npog yog ua los ntawm cov khoom siv tsis muaj hluav taws xob. Qhov qhib sab (sab ntawm lub phaj electrode npog ntsej muag ntawm cov khoom yuav tsum tau coated. Qhov chaw nyob ib puag ncig ntawm cov tubular electrode tuaj yeem suav tau tias yog qhov qhib qhov chaw) yog nruab nrog Ion selective membrane. Anodes muaj nyob rau hauv daim ntawv ntawm phaj hom, tubular hom, arc hom anode, thiab lwm yam. Ntawm lawv, cov tubular hom anode yog tam sim no siv dav tshaj plaws, thiab cov ntsiab lus hauv qab no:

Tubular anode chav tsev yog tsim los ntawm anode cover (xws li ib tug ion exchange membrane) thiab ib tug anode thiab yog ib tug lwm txoj rau lub phaj anode yav dhau los. Nws cov qauv yog compact, daim nyias nyias kuj me me, lub zog noj yog tsawg, lub zog ua luam dej yog siab, chav tsev membrane cheeb tsam yog loj, kev pab cuam lub neej yog ntev, thiab kev tswj thiab kev tswj yog yooj yim. Vim nws qhov me me thiab lub teeb yuag, nws tuaj yeem ntsia tau rau sab, hauv qab, lossis sab sauv ntawm lub tank electrophoresis kom ua tau raws li cov txheej txheem txheej txheej sib txawv. Cov khoom siv anode electrode feem ntau yog ua los ntawm 316L stainless hlau, thiab lub thickness yog nyiam dua tsis pub tsawg dua 3.2 hli. Raws li ib txwm muaj, lub anode dissolves maj mam, thiab nws lub neej nyob ntawm qhov tsim tau ntawm lub tank electrophoresis.

Qhov zoo ntawm Titanium electrodes rau Electrophoretic xim

Cathodic electrophoresis yog txheej txheej txheej txheem uas feem ntau siv hauv lub cev lub cev tsim khoom, thiab nws yog lub ntsiab lus tseem ceeb los txhim kho lub neej kev pabcuam (corrosion resistance) ntawm lub cev lub cev. Hauv cathodic electrophoresis, cov xim electrophoretic siv yog cationic (zoo them) resin thiab pigment paste, thiab cov khoom coated (lub cev) yog siv los ua cathode.

Stainless hlau anodes cia siab rau passivation ua hauj lwm, tab sis lub txim dissolution ntawm stainless hlau thiab tsim ntawm passivation films yog heev cuam tshuam los ntawm cov mem tes tam sim no, uas yog ib qho nyuaj rau tswj nyob rau hauv tiag tiag ntau lawm. Qhov tshwm sim lub neej ntawm anode tuaj yeem ncav cuag ntau xyoo. Txhawm rau ua kom lub neej ua haujlwm ntev ntawm lub anode, titanium electrode ntawm ruthenium oxide lossis titanium-based oxide tuaj yeem xaiv.

Lub neej ntawm Ti phaj coated nrog ruthenium oxide yog ob peb zaug ntev dua li ntawm cov hlau tsis muaj steel anodes, tab sis thawj zaug peev kuj siab dua cov hlau stainless. Txij li thaum cov ntsiab lus chlorine yog pom tseeb heev rau corrosion ntawm stainless hlau anodes, thiab cov ntsiab lus chlorine tsis cuam tshuam rau Ti-based oxide titanium anodes, nws kuj siv tau. Ti-raws li oxide-coated anodes yog dimensionally ruaj khov anodes, thiab tsuas yog ib qho me me ntawm kev ua haujlwm yuav tsum tau ua thaum ua haujlwm. Txheej poob, Ti substrate yog ib txwm nyob rau hauv ib qho kev poob-dawb lub xeev nyob rau hauv ntau lawm. Tom qab lub anode yog deactivated, tsuas yog lub active txheej yuav tsum tau re-coated, thiab Ti substrate yuav siv tau ntau zaus, uas yuav txuag tau ib co nyiaj. Lub titanium anode muaj lub neej ua haujlwm ntev. Siv cov anode no los hloov cov stainless hlau anode tuaj yeem zam kev hloov pauv ntawm anode, uas yog qhov tsim nyog rau kev ruaj khov thiab ib txwm tsim khoom thiab kev tswj kom yooj yim.

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