Moisture-Proof thiab Anti-Corrosion Properties of Conformal Coating Materials: Realization thiab Measurement

 

Hauv ntau thaj chaw xws li cov khoom siv hluav taws xob, aerospace, thiab kev lag luam automotive, kev tiv thaiv kev ya raws thiab kev tiv thaiv corrosion yog qhov tseem ceeb los ua kom muaj kev ruaj ntseg mus sij hawm ntev thiab ntev kev pab cuam lub neej ntawm cov khoom siv. Raws li cov khoom siv uas tuaj yeem tsim cov yeeb yaj kiab tiv thaiv nyias thiab tsis sib xws ntawm cov khoom siv, cov txheej txheem conformal yog siv dav vim nws cov khoom zoo heev noo noo-pov thawj thiab tiv thaiv corrosion. Nkag siab txog kev ua kom pom tseeb thiab kev ntsuas qhov tseeb ntawm cov khoom pov thawj noo noo thiab tiv thaiv corrosion ntawm conformal txheej Nws yog ib qho tseem ceeb heev rau kev txhim kho cov txheej txheem txheej txheej, txhim kho cov txheej txheem zoo, thiab xaiv kev xaiv thiab siv cov txheej txheem conformal.

Lub hauv paus ntsiab lus thiab kev ua haujlwm ntawm Conformal Coatings

(1) Basic Composition

Conformal coatings feem ntau muaj cov khoom xws li resins, kuab tshuaj, thiab additives. Resin yog cov yeeb yaj kiab tseem ceeb ntawm cov txheej txheem, thiab cov resins muaj xws li acrylic resin, epoxy resin, silicone resin, thiab lwm yam. Cov kuab tshuaj yog siv los yaj cov resin, ua kom nws sib npaug ntawm cov khoom, thiab lawv yuav volatilize thaum lub sij hawm ziab. Additives muaj xws li curing agents, leveling agents, defoaming agents, thiab lwm yam, uas yog siv los txhim kho kev ua tau zoo ntawm txheej thiab txheej txheem kev tsim kho.

(2) Cov Cai Ua Haujlwm

Conformal coatings tsim ib tug nruam thiab ntom tiv thaiv zaj duab xis los ntawm kev coated rau saum npoo ntawm cov khoom. Cov yeeb yaj kiab no tuaj yeem thaiv kev sib cuag ntawm cov khoom tsis zoo xws li ya raws, oxygen, corrosive gases, thiab cov kua dej thiab qhov chaw ntawm cov khoom, yog li ua lub luag haujlwm ntawm noo noo-pov thawj thiab tiv thaiv corrosion. Nyob rau tib lub sij hawm, conformal coatings kuj muaj ib tug tej yam yooj yim degree ntawm yooj thiab adhesion, uas yuav hloov mus rau qhov zoo ntawm cov kev hloov ntawm cov khoom nto thiab ib puag ncig kev nyuaj siab, kom ntseeg tau tias kev ncaj ncees ntawm cov zaj duab xis tiv thaiv.

 

Realization ntawm Moisture-Proof Performance of Conformal Coatings

(1) Thaiv cov dej noo nkag

Cov qauv molecular ntawm conformal txheej yog compact, uas tuaj yeem tiv thaiv kev nkag mus ntawm cov dej molecules. Piv txwv li, silicone resin muaj lub zog ntawm qhov chaw qis thiab hydrophobicity, uas tuaj yeem tsim cov dej-repellent txheej ntawm cov khoom, txo cov adsorption thiab nkag mus ntawm noo noo. Cov txheej txheem polymer network tsim tom qab kho cov epoxy resin thiab acrylic resin kuj muaj cov khoom thaiv zoo, uas tuaj yeem thaiv kev nkag mus ntawm cov dej noo.

(2) Tiv thaiv kev tsim cov dej condensate

Nyob rau hauv qee qhov chaw ib puag ncig, cov dej condensate tuaj yeem tshwm rau ntawm qhov chaw ntawm cov khoom, uas ua rau muaj kev nyuaj ntawm kev ya raws. Conformal coatings tuaj yeem txo qhov tsim ntawm cov dej condensate los ntawm kev kho qhov kub thiab av noo. Piv txwv li, ib co coatings conformal coatings nrog tshwj xeeb thermal zog yuav nqus los yog tso cua sov thaum lub kub hloov, yog li txo qhov kub thiab txias gradient ntawm qhov chaw thiab txo cov tiam ntawm condensate dej.

 

Kev ua tiav ntawm Kev Tiv Thaiv-Corrosion Performance of Conformal Coatings

(1) Kev cais lub cev

Zoo ib yam li lub hauv paus ntsiab lus ntawm noo noo-pov thawj, conformal coatings cais cov khoom ntawm corrosive media los ntawm kev tsim cov yeeb yaj kiab tiv thaiv ntawm qhov khoom. Cov yeeb yaj kiab tiv thaiv no tuaj yeem tiv thaiv kev sib cuag ntawm cov pa oxygen, corrosive gases (xws li sulfur dioxide, hydrogen chloride, thiab lwm yam) thiab cov kua (xws li kua qaub, alkali, thiab ntsev tov) thiab qhov chaw ntawm cov khoom, yog li tiv thaiv qhov tshwm sim ntawm corrosion.

(2) Tshuaj Inhibition

Qee cov coatings conformal muaj cov khoom siv nrog cov tshuaj tiv thaiv tshuaj tiv thaiv, uas tuaj yeem hnov ​​​​mob chemically nrog corrosive media, yog li inhibiting kev txhim kho corrosion. Piv txwv li, cov tshuaj tiv thaiv corrosion ntxiv rau hauv ib co coatings tuaj yeem tsim ib zaj duab xis passive ntawm cov hlau nto, tiv thaiv oxidation ntxiv thiab corrosion ntawm cov hlau.

 

Kev ntsuas cov txheej txheem ntawm cov dej noo-pov thawj thiab tiv thaiv corrosion ntawm Conformal Coatings

(1) Standard Test Methods

1. Ntsuas Kev Ntsuas: Cov kev sim ntsuas cov av ib txwm muaj xws li ntsuas cov av tsis tu ncua thiab ntsuas cov av sib hloov. Nyob rau hauv qhov kev ntsuam xyuas qhov av tsis tu ncua, cov qauv coated nrog cov txheej txheem conformal yog muab tso rau hauv qhov chaw tsis tu ncua, thiab cov kev hloov ntawm cov qauv raug soj ntsuam. Kev ntsuas cov av sib hloov simulates cov av noo hloov hauv qhov chaw tiag tiag, thiab kev ua haujlwm ntawm cov dej noo-pov thawj ntawm cov txheej txheem txheej txheem yog ntsuas los ntawm ntau lub voj voog.
2. Ntsev Kuaj Ntsev: Kev kuaj ntsev ntsev yog ib txoj hauv kev siv los ntsuas qhov kev ua haujlwm tiv thaiv corrosion. Cov qauv yog raug rau ib puag ncig tshuaj tsuag ntsev uas muaj cov tshuaj sodium chloride, thiab pom qhov teeb meem corrosion ntawm cov qauv. Raws li cov degree ntawm corrosion thiab lub sij hawm, lub anti-corrosion kev ua tau zoo ntawm cov conformal txheej yuav raug soj ntsuam.
3. Sov thiab Humid Test: Kev ntsuas sov thiab av noo sib xyaw ua ke ntawm cov av noo thiab kub. Cov qauv yog muab tso rau hauv qhov kub thiab txias ib puag ncig los ntsuas cov dej noo-pov thawj thiab tiv thaiv corrosion ntawm cov txheej txheem conformal nyob rau hauv hnyav hnyav.

(2) Kev soj ntsuam txhais tau tias nyob rau hauv kev siv tswv yim

1. Electrochemical Impedance Spectroscopy (EIS): EIS yog cov txheej txheem electrochemical siv los kawm txog cov txheej txheem corrosion ntawm cov ntaub ntawv. Los ntawm kev ntsuas qhov impedance ntawm cov qauv ntawm ntau zaus, kev tiv thaiv kev ua haujlwm ntawm cov txheej txheem sib txawv thiab cov kinetic tsis ntawm cov txheej txheem corrosion tuaj yeem nkag siab.
2. Scanning Electron Microscope (SEM): SEM tuaj yeem siv los soj ntsuam qhov microstructure thiab nto morphology ntawm cov txheej txheem conformal. Los ntawm kev txheeb xyuas cov txheej txheem microstructure ntawm txheej txheej, cov txheej txheem sab hauv ntawm nws cov dej-pov thawj thiab kev tiv thaiv corrosion tuaj yeem raug soj ntsuam.
3. Fourier Transform Infrared Spectroscopy (FTIR): FTIR tuaj yeem siv los txheeb xyuas cov tshuaj lom neeg muaj pes tsawg leeg thiab cov qauv kev hloov pauv ntawm cov txheej txheem conformal. Los ntawm kev saib xyuas cov tshuaj hloov pauv ntawm cov txheej txheem thaum lub sij hawm ya raws thiab kev tiv thaiv corrosion, kev ruaj ntseg ntawm nws cov kev ua tau zoo tuaj yeem raug soj ntsuam.

 

Cov yam ntxwv cuam tshuam rau cov dej noo-pov thawj thiab tiv thaiv corrosion kev ua tau zoo ntawm Conformal Coatings

(1) Txheej Txheej

Cov txheej txheem ntawm txheej txheej plays lub luag haujlwm tseem ceeb hauv nws cov dej-pov thawj thiab tiv thaiv corrosion. Kev sib txawv ntawm cov resins, additives, thiab cov kuab tshuaj yuav cuam tshuam rau kev ua yeeb yaj kiab, kev ua haujlwm tsis zoo, thiab tshuaj lom neeg ruaj khov ntawm txheej. Piv txwv li, kev sib xyaw siv ntawm epoxy resin thiab silicone resin tuaj yeem txhim kho kev ua tau zoo ntawm cov txheej txheem.

(2) Kev tsim kho txheej txheem

Cov txheej txheem tsim kho kuj tseem muaj feem cuam tshuam rau kev ua haujlwm ntawm cov txheej txheem conformal. Cov txheej thickness, uniformity, thiab curing tej yam kev mob ntawm lub txheej yuav tag nrho cov cuam tshuam nws cov dej-pov thawj thiab anti-corrosion kev ua tau zoo. Cov txheej txheem tsim kho kom raug tuaj yeem ua kom ntseeg tau tias cov txheej txheem ua tiav thiab ntom ntom tiv thaiv zaj duab xis.

(3) Environmental Factors

Ib puag ncig yam xws li kub, av noo, thiab concentration thiab hom corrosive media yuav tag nrho cov cuam tshuam rau kev ua tau zoo ntawm cov txheej txheem. Nyob rau hauv ib puag ncig sib txawv, cov dej-pov thawj thiab tiv thaiv corrosion ntawm conformal txheej yuav txawv.

xaus

Cov dej-pov thawj thiab anti-corrosion kev ua tau zoo ntawm conformal txheej yog pom tau los ntawm lawv qhov tshwj xeeb muaj pes tsawg leeg thiab cov qauv kev ua haujlwm. Los ntawm ntau txoj kev xws li thaiv cov dej nkag mus, tiv thaiv kev tsim cov dej condensate, kev sib cais ntawm lub cev, thiab tshuaj lom neeg inhibition, conformal coatings tuaj yeem tiv thaiv cov khoom los ntawm kev ua txhaum ntawm cov dej noo thiab corrosion. Nyob rau tib lub sijhawm, ntsuas qhov ntsuas dej kom raug thiab tiv thaiv corrosion ntawm cov txheej txheem sib txawv yog qhov tseem ceeb rau lawv cov kev tshawb fawb, kev tsim kho, kev tsim khoom, thiab kev siv. Cov txheej txheem xeem thiab kev soj ntsuam txhais tau tias hauv cov ntawv thov siv tau muab lub hauv paus txhim khu kev qha rau kev ntsuas qhov ua tau zoo ntawm cov txheej txheem txheej txheem. Txawm li cas los xij, kev ua tau zoo ntawm cov txheej txheem txheej txheem kuj cuam tshuam los ntawm ntau yam xws li txheej txheej txheej, txheej txheem kev tsim kho, thiab ib puag ncig. Yog li ntawd, hauv kev siv cov tswv yim, cov yam ntxwv no yuav tsum tau ua kom tiav, cov txheej txheem tsim nyog yuav tsum raug xaiv, thiab cov txheej txheem tsim kho kom raug yuav tsum tau txais kev pom zoo los xyuas kom meej qhov ua tau zoo ntawm nws cov dej-pov thawj thiab kev tiv thaiv corrosion. Nyob rau hauv lub neej yav tom ntej, nrog kev nce qib ntawm kev tshawb fawb thiab thev naus laus zis, kev ua tau zoo ntawm cov txheej txheem kev sib raug zoo yuav raug txhim kho tas li, thiab daim ntawv thov kev lag luam tseem yuav nthuav dav ntxiv.

Yog xav paub ntxiv txog ib daim ntawv qhia ua tiav rau cov dej-pov thawj thiab cov khoom tiv thaiv corrosion ntawm cov ntaub ntawv txheej txheej: kev paub thiab kev ntsuas, koj tuaj yeem mus ntsib Deepmaterial ntawm https://www.adhesivesmanufacturer.com/ yog xav paub ntau info.