Kodi circuit board conformal coating ndi chiyani?zotsatira zake ndi zotani?Kodi mitundu ya PCBA conformal coating ndi iti?

Kodi circuit board conformal coating ndi chiyani?zotsatira zake ndi zotani?

Momwe mungapangire zinthu kukhala zolimba m'malo ovuta ndi mutu wofunikira.Kodi timateteza bwanji zinthu zathu zolondola kuzinthu zowononga izi?Poyamba, zipangizo zamagetsi zinkatetezedwa ndi njira yotchedwa potting.Izi zimatheka mwa kutsekereza zida zamagetsi mu mpanda wa pulasitiki womwe umatseguka mbali imodzi, ngati chobzala chowoneka modabwitsa.Kenako lembani ndi zinthu zina zosagwiritsa ntchito ngati acrylic kapena silikoni.Izi zimateteza chipangizo ku chilengedwe chakunja, koma chimatenga nthawi, chochuluka, cholemera komanso chokwera mtengo kwambiri.Ndi anthu ochepa chabe omwe alibe makasitomala ankhondo kapena mafakitale omwe angagwiritse ntchito.Zida zamagetsi zikamacheperachepera komanso danga, kulemera, nthawi ndi zinthu zamtengo wapatali zimakhala zofunika kwambiri, njira ina yolimbikitsira yakhala yofala kwambiri: zokutira zofananira, muyezo wa zokutira zofananira ndizokutira makulidwe osakwana 0.21mm.

Conformal zokutira ndikugwiritsa ntchito zida zophimba pamwamba pa chinthu kuti ziteteze zida zamagetsi kumadera ovuta.Chofala kwambiri ndi chinyezi.Mafakitale omwe nthawi zonse amagwiritsa ntchito zokutira zofananira akuchulukiranso, koma makamaka azachipatala, ankhondo, apanyanja, magalimoto ndi mafakitale.Zovala zofananira zimagwiritsidwanso ntchito nthawi zambiri pazinthu zina zomalizidwa zomwe nthawi zambiri zimakhala ndi madzi kapena mankhwala, monga zotsukira mbale, makina ochapira, kapena zida zilizonse zopangidwira panja, monga makamera achitetezo.Kuphatikiza pakuteteza zamagetsi, zokutira zofananira zitha kugwiritsidwa ntchito pazodzikongoletsera monga kuwonjezera kukana kapena kukana kwa okosijeni pamalo (zovala zowoneka bwino pamagalimoto), kuwonjezera kumveka konyezimira kapena kowoneka bwino pamakaseti, kuwonjezera smudges / zala kapena ngakhale kusintha ndi mandala.

Momwe mungasungire bolodi ladera?

Pali njira zosiyanasiyana zokutira matabwa ozungulira, zomwe zimafuna zipangizo zosiyana siyana kuti zitheke.Choyamba, muyenera kudziwa cholinga cha zokutira.Kodi mukuteteza PCBA ku nyengo, mafuta osiyanasiyana, kugwedezeka kwamakina, nkhungu, etc.?Zida zosiyanasiyana zimagwiritsidwa ntchito pazifukwa zosiyanasiyana, ndipo chemistry yomwe imagwiritsidwa ntchito popaka imatanthauzira ndendende zomwe zokutira zimatha kukwaniritsa.Mwachitsanzo, ngati mukufuna kuteteza PCBA yanu ku chinyezi ndi kutsitsi mchere, ndipo mukufuna kuonjezera kukana ESD, parylene kungakhale chisankho chabwino.Komabe, ngati zinthu pa PCBA ndi tcheru kutentha kapena vakuyumu, parylene si bwino chifukwa zinthu zonse alipo pa ndondomeko ❖ kuyanika parylene.Acrylic sangathe kuchita zambiri magetsi, koma kuteteza PCBA wanu ku chinyezi ndi mchere kutsitsi.Angagwiritsidwenso ntchito m'njira zosiyanasiyana kutentha kwa chipinda.

Kugawika ndi Zopangira Zovala Zogwirizana

Ma Acrylics mwina ndi utoto womwe umagwiritsidwa ntchito kwambiri masiku ano.Komanso ndi zinthu zotsika mtengo kwambiri zomwe zimagwiritsidwa ntchito.Ubwino wake waukulu ndi mtengo komanso zosavuta kuzigwira, koma zimakhalanso ndi zovuta zina.Kutentha kumafewetsa, ndipo imatha kuyaka, kutanthauza kuti imatha kuphulika nthawi zina ndipo, monga nkhungu zina, imatha kuwonongeka ndi mankhwala komanso kuwonongeka kwachilengedwe.Ngati kukonzanso kukufunika, kumatha kuchotsedwa pogwiritsa ntchito zosungunulira kapena kutentha.

Polyurethane ndi zokutira zina wamba.Kutengera mawonekedwe ake oterera a hydrophobic ndi oleophobic, ndi zida zabwino kwambiri zokutira.Komabe, zinthu zomwezi zikutanthauza kuti ndizosavuta kumamatira kumadera ena, ndipo delamination iyenera kuchepetsedwa.Kukonzanso kumafuna zosungunulira zapadera kuti zichotse.

Ma silicones ali ndi zinthu zapadera zomwe zimawapangitsa kukhala zokutira zothandiza pomwe ena alibe.Imalimbana ndi kutentha kwambiri, inert biologically ndi mankhwala, komanso nthawi yomweyo hydrophobic ndi oleophobic.Zinthuzi zimatanthauzanso kuti ndizovuta kuphatikiza ndi zida zina, ndipo njira zochepetsera ziyenera kuchitidwa kuti mupewe delamination.Mapangidwe ake a raba komanso kukana kwa mankhwala kumatanthauzanso kuti achotsedwe mwamakina kuti apangidwenso.

Epoxy resin ndi chinthu cholimba kwambiri chomwe chilinso ndi ntchito zina zapadera.Kukhazikika kwake kumatanthauza kuti chitha kugwiritsidwa ntchito ngati kulimbikitsa makina, koma chochititsa chidwi kwambiri chitha kugwiritsidwa ntchito ngati chitetezo.Kuphatikiza epoxy ndi zipangizo zina, monga crossbars, amalenga dongosolo okhwima kuti adziwononga yokha ndi zipangizo moyandikana ngati amayesa umakaniko kulekanitsa ndi PCBA.Ma epoxies amalimbananso ndi kutentha ndi mankhwala.Kuuma kwake ndi kuyika nthawi kumakhalanso kopanda phindu chifukwa kumawonjezera nthawi yokonza ndikupangitsa kukonzanso kukhala kosatheka.

Nanocoatings ndi njira yomwe ikubwera.Pamene lusoli likukhwima, katundu ndi ntchito za nanocoatings zikukula mofulumira.Chosungunulira chokhala ndi nanoparticles choyimitsidwa chimagwiritsidwa ntchito pa mbale, ndipo mbaleyo imawumitsidwa ndi mpweya kapena kuphika mu uvuni.Uvuni umasungunulanso ma nanoparticles kukhala gawo lapansi ngati galasi.Mkhalidwe wowonda kwambiri wa nanocoatings umatanthauza kuti amatha kuvala koma osavuta kukonzanso.