Chii chinonzi circuit board conformal coating?zvinoguma nei?
Maitiro ekuita kuti zvigadzirwa zvigare munzvimbo dzakaoma zvakare inyaya yakakosha.Tinodzivirira sei zvigadzirwa zvedu kubva kune zvinoparadza izvi?Pakutanga, midziyo yemagetsi yakachengetedzwa nenzira inonzi potting.Izvi zvinowanikwa nekuvharira zvemagetsi mune yakasarudzika yepurasitiki yakavharirwa iyo yakavhurika kune imwe magumo, senge isinganzwisisike yekudyara.Wozadza nezvimwe zvisiri-conductive zvinhu senge acrylic kana silicone.Izvi zvinodzivirira mudziyo kubva kunharaunda yekunze, asi inotora nguva, yakakura, inorema uye inodhura zvakanyanya.Vashoma vanhu vari kunze kwevatengi vemauto kana maindasitiri vanogona kuishandisa.Sezvo midziyo yemagetsi ichiva diki uye nzvimbo, uremu, nguva uye mutengo zvinhu zvinonyanya kukosha, imwe nzira yekusimbisa yave kuwanda: conformal coating, chiyero che conformal coating kazhinji Iyo yekupfeka ukobvu isingasviki 0.21mm.
Conformal coating iko kushandiswa kwezvinhu zvekupfekedza pamusoro pechigadzirwa kuchengetedza zvinhu zvemagetsi kubva munzvimbo dzakaoma.Inonyanya kuzivikanwa ndeyehunyoro.Iwo maindasitiri anogara achingo shandisa conformal coating ari kuwedzerawo, asi kunyanya zvekurapa, zvechiuto, zvemugungwa, zvemotokari nemaindasitiri.Conformal coatings anowanzo shandiswa pane zvimwe zvakapedzwa zvigadzirwa zvinowanzoiswa mumvura kana makemikari nharaunda, senge madhishi, muchina wekugezesa, kana chero mudziyo wakagadzirirwa kuve kunze, senge makamera ekuchengetedza.Pamusoro pekudzivirira zvemagetsi, conformal coatings inogona kushandiswa mu cosmetic application senge kuwedzera kukwenya kana oxidation kuramba pameso (majasi akajeka pamota), kuwedzera kupenya kana kutsvedza kunzwa kune casings, kuwedzera smudges / zvigunwe kana kunyange kushandura. iyo lenzi.
Nzira yekuchengetedza sei bhodhi redunhu?
Kune nzira dzakasiyana dzekuputira mapuranga edunhu, imwe neimwe inoda zvinhu zvakasiyana-siyana zvekushongedza kuti zvibudirire.Kutanga, iwe unoda kuziva kuti chinangwa chekuputira chii.Uri kudzivirira PCBA kubva kumamiriro ekunze, maoiri akasiyana siyana, mechini vibration, mold, nezvimwe?Zvinhu zvakasiyana-siyana zvinoshandiswa kune zvinangwa zvakasiyana, uye makemikari anoshandiswa pakuputira anotsanangura chaizvo izvo kuvhara kunogona kubudirira.Semuenzaniso, kana iwe uchida kuchengetedza PCBA yako kubva kunyoro uye munyu pfapfaidzo, uye uchida kuwedzera kuramba ESD, parylene ingave sarudzo yakanaka.Nekudaro, kana zvinhu zviri paPCBA zvine hanya nekupisa kana vacuum, parylene haisi sarudzo yakanaka nekuti zvese zvirimo zviripo panguva yeparylene coating process.Acrylic haigone kuita yakawanda magetsi, asi inodzivirira PCBA yako kubva kunyoro uye munyu pfapfaidzo.Inogonawo kushandiswa nenzira dzakasiyana-siyana pakupisa kwekamuri.
Classification uye Raw Materials eConformal Coatings
Acrylics ndiyo inonyanya kushandiswa pendi nhasi.Ndiwo zvakare chinhu chakachipa chinoshandiswa.Mabhenefiti ayo makuru imari uye nyore kubata, asi inewo zvimwe zvakakosha zvakaipira.Kupisa kunoipfavisa, uye inopfuta, zvichireva kuti inogona kuita brittle mune mamwe mamiriro ezvinhu uye, semamwe mold, inotapukirwa nekukuvara kwemakemikari uye kurwiswa kwebiological.Kana rework ichidikanwa, inogona kubviswa uchishandisa solvents kana kupisa.
Polyurethane imwe yakajairika coating.Tichifunga nezvayo inotsvedza hydrophobic uye oleophobic zvimiro, chinhu chakanakisa chekupfeka.Nekudaro, izvi zvimiro zvakafanana zvinoreva kuti kashoma kunamatira kune dzimwe nzvimbo, uye delamination inofanirwa kudzikiswa.Rework inoda zvakakosha zvinonyungudutsa kubvisa.
Silicones ine yakasarudzika zvivakwa zvinoita kuti ive yakakosha mabhanhire uko vamwe vasina.Inopesana nekupisa kwakanyanya, biologically uye makemikari inert, uye panguva imwe chete hydrophobic uye oleophobic.Izvi zvivakwa zvinoreva zvakare kuti zvakaoma kusanganisa nezvimwe zvinhu, uye matanho ekuderedza anofanirwa kutorwa kudzivirira delamination.Rubbery magadzirirwo ayo uye makemikari kuramba zvairevawo kuti yaifanira kubviswa michina kuti ishandiswezve.
Epoxy resin chinhu chakanyanya kuoma icho chine mamwe mashandisirwo akasiyana.Kuomarara kwaro kunoreva kuti inogona kushandiswa seyakagadziridzwa yekusimbisa, asi zvinonyanya kufadza inogona kushandiswa semudziyo wekuchengetedza.Kubatanidza epoxy nezvimwe zvinhu, senge crossbars, inogadzira chimiro chakaomarara chinozviparadza pachacho uye nemidziyo iri padyo kana ikayedzwa kuiparadzanisa kubva kuPCBA.Epoxies zvakare inodzivirira kupisa uye makemikari.Kuomarara kwayo uye nguva yekumisikidza hainawo kunaka sezvo ichiwedzera nguva yekugadzirisa uye inoita kuti rework iite kunge isingaite.
Nanocoatings mhinduro iri kubuda.Sezvo tekinoroji iyi inokura, zvivakwa uye kushanda kwenanocoatings zviri kukurumidza kubuda.Mushonga une yakaturikwa nanoparticles inoshandiswa pandiro, uye ndiro inobva yaomeswa nemhepo kana kubikwa muchoto.Ovheni zvakare inonyungudutsa nanoparticles mugirazi-senge substrate.Iyo yekupedzisira-yakaonda hunhu hwe nanocoatings inoreva kuti vanogona kupfekwa asi nyore kushanda zvakare.
Nguva yekutumira: Jun-19-2023