{"id":8393,"date":"2021-09-21T11:57:41","date_gmt":"2021-09-21T11:57:41","guid":{"rendered":"https:\/\/knowhow.distrelec.com\/?p=8393"},"modified":"2021-09-21T11:57:42","modified_gmt":"2021-09-21T11:57:42","slug":"hvordan-beskytte-pcb-coatings-vs-resins","status":"publish","type":"post","link":"https:\/\/knowhow.distrelec.com\/no\/vedlikehold-reparasjon-og-drift\/hvordan-beskytte-pcb-coatings-vs-resins\/","title":{"rendered":"Hvordan beskytte PCB: Coatings vs Resins"},"content":{"rendered":"\n<p>Trykt kretskort (PCB) brukes i nesten alle elektroniske enheter som er tilgjengelige, varierende etter applikasjon. Imidlertid er en konsekvent i alle applikasjoner at PCB krever en eller annen form for beskyttelse mot omgivelsene.<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Vann \/ fuktighet<\/li><li>Vibrasjon<\/li><li>Fysisk belastning \/ sjokk<\/li><li>Termisk belastning \/ sjokk&nbsp;<\/li><li>Forurensning<\/li><\/ul>\n\n\n\n<p>Uansett hvilken type beskyttelse du \u00f8nsker, m\u00e5 alle PCB rengj\u00f8res grundig for \u00e5 sikre at overflateforurensning ikke p\u00e5virker beskyttelsesniv\u00e5ene som belegget eller harpiksen gir.<strong><\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img  loading=\"lazy\"  decoding=\"async\"  width=\"800\"  height=\"400\"  src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAyAAAAGQAQMAAABs65Z3AAAAA1BMVEUAAP+KeNJXAAAAAXRSTlMAQObYZgAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAD5JREFUeNrtwTEBAAAAwqD1T20ND6AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA+DZ3QAAGLX8MtAAAAAElFTkSuQmCC\"  alt=\"\"  class=\"wp-image-2877 pk-lazyload\"  data-pk-sizes=\"auto\"  data-ls-sizes=\"auto, (max-width: 800px) 100vw, 800px\"  data-pk-src=\"https:\/\/knowhowprod.wpengine.com\/wp-content\/uploads\/2021\/06\/Electrolube-PCB-1.jpg\"  data-pk-srcset=\"https:\/\/knowhow.distrelec.com\/wp-content\/uploads\/2021\/06\/Electrolube-PCB-1.jpg 800w, https:\/\/knowhow.distrelec.com\/wp-content\/uploads\/2021\/06\/Electrolube-PCB-1.jpg?resize=300,150 300w, https:\/\/knowhow.distrelec.com\/wp-content\/uploads\/2021\/06\/Electrolube-PCB-1.jpg?resize=768,384 768w, https:\/\/knowhow.distrelec.com\/wp-content\/uploads\/2021\/06\/Electrolube-PCB-1.jpg?resize=380,190 380w, https:\/\/knowhow.distrelec.com\/wp-content\/uploads\/2021\/06\/Electrolube-PCB-1.jpg?resize=550,275 550w\" ><\/figure>\n\n\n\n<h2 id=\"konforme-belegg\" class=\"wp-block-heading\">Konforme belegg<\/h2>\n\n\n\n<p>Et konformt belegg er en tynn film som kan p\u00e5f\u00f8res et PCB for \u00e5 gi beskyttelse mot farlige omgivelser. Slike belegg gir effektiv kjemisk og termisk motstand mot kort eksponering. De &laquo;samsvarer&raquo; med konturene p\u00e5 et brett, noe som gir utmerket beskyttelse og en grundig dekning for \u00e5 forlenge PCB-ens levetid.<br><br>Tykkelsen p\u00e5 dette belegget vil falle mellom 25-100 mikron, og tilf\u00f8rer komponenten en liten vekt\u00f8kning. Som en relativt tynn film p\u00e5f\u00f8rer dette belegget lite belastning p\u00e5 komponenter som er veldig fordelaktig for delikat og skj\u00f8rt utstyr. Vanligvis vil filmen v\u00e6re gjennomsiktig, slik at brukerne enkelt kan identifisere PCB.<br><br>De fleste belegg er 1K (enkeltkomponent) -systemer, og gir lang levetid for badet, lav herdetemperatur og kort t\u00f8rketid. Det er enkelt \u00e5 gj\u00f8re om belegg og utskifte komponenter med konform belegg. Belegg kan p\u00e5f\u00f8res manuelt med en pensel, spr\u00f8ytepistol eller ved \u00e5 dyppes. Imidlertid blir robotsystemer i \u00f8kende grad brukt for \u00e5 gi en mer presis og konsistent applikasjon.<\/p>\n\n\n\n<h2 id=\"innkapslede-harpikser\" class=\"wp-block-heading\">Innkapslede harpikser<\/h2>\n\n\n\n<p>Innkapslingsharpikser er designet for \u00e5 beskytte og isolere PCB og komponenter fra t\u00f8ffe og utfordrende milj\u00f8er ved \u00e5 kapsle inn enheten og skape en barriere. N\u00e5r de brukes p\u00e5 PCB, kan harpikser v\u00e6re 0,5 mm + tykke, ofte p\u00e5f\u00f8rt mye tykkere enn dette. Som et resultat kan harpikser for\u00e5rsake en betydelig vekt\u00f8kning som ofte resulterer i en h\u00f8yere pris per enhet enn belegg.<br><br>Harpiks er typisk 2K (to-komponent) systemer hvor en harpiks og en herder blandes for \u00e5 danne en tverrbundet polymer. Harpiks har mye h\u00f8yere viskositet enn belegg og er designet for \u00e5 herde ved romtemperatur. Ved \u00e5 p\u00e5f\u00f8re harpiks varme, kan herdetiden imidlertid reduseres. Siden de fleste herdingsreaksjonene er eksoterme, hvor for mye harpiks p\u00e5f\u00f8res, kan varmen som produseres under herdingsprosessen f\u00f8re til at PCB overopphetes og til og med tar fyr.<br><br>Ved \u00e5 bruke en harpiks kan PCB gi st\u00f8rre beskyttelse, spesielt i tilfelle et kjemisk angrep eller i scenarier der komponenten er nedsenket i lengre perioder. Harpiks kan ogs\u00e5 tilby beskyttelse mot fysisk st\u00f8t, da hovedparten av harpiksen kan bidra til \u00e5 spre kraften. I motsetning til belegg kan harpikser v\u00e6re veldig m\u00f8rke i fargen, slik at PCB under er helt skjult n\u00e5r det p\u00e5f\u00f8res, og skaper en viss sikkerhet i designet. Det er imidlertid verdt \u00e5 merke seg at n\u00e5r harpiks fjernes, kan dette f\u00f8re til \u00f8deleggelse av PCB.<\/p>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table><tbody><tr><\/tr><tr><th>Egenskaper<\/th><th>Konform belegg<\/th><th><strong>Harpiks<\/strong><\/th><\/tr><tr><td>Beskyttelse<\/td><td>Nedre<\/td><td>H\u00f8yere<\/td><\/tr><tr><td>Tykkelse<\/td><td>25-100 mikron<\/td><td>0,5+ mm (ofte mye tykkere)<\/td><\/tr><tr><td>Vekt<\/td><td>Minimal \u00f8kning<\/td><td>\u00a0Betydelig \u00f8kning<\/td><\/tr><tr><td>Stress p\u00e5 komponenter<\/td><td>Veldig lite<\/td><td>Betydelig stress<\/td><\/tr><tr><td>Beleggsystemer<\/td><td>1K (enkelt komponent)<\/td><td>2K (to komponenter)<\/td><\/tr><tr><td>Omarbeid<\/td><td>Ja<\/td><td>Nei<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 id=\"ting-du-bor-vurdere-for-du-velger-pcb-beskyttelse\" class=\"wp-block-heading\">Ting du b\u00f8r vurdere f\u00f8r du velger PCB-beskyttelse<\/h2>\n\n\n\n<h3 id=\"1-pcb-kabinetter\" class=\"wp-block-heading\">1. PCB-kabinetter<\/h3>\n\n\n\n<p>Hvis PCB er inneholdt i et kabinett som er utformet som sin prim\u00e6re beskyttelse, vil et konformt belegg v\u00e6re tilstrekkelig som sikkerhetskopiering. Dette er ideelt i tilfelle skade eller lekkasje og kan gi beskyttelse mot fuktighet og kondens. Hvis huset ikke er i stand til \u00e5 gi beskyttelse mot milj\u00f8et, vil en harpiks v\u00e6re et mer passende valg.<\/p>\n\n\n\n<h3 id=\"2-miljo\" class=\"wp-block-heading\">2. Milj\u00f8<\/h3>\n\n\n\n<p>Ofte brukt i h\u00f8yspenningselektronikk og eksplosive milj\u00f8er, harpikser gir et totalt dielektrisk lag for \u00e5 forhindre lysbue. I et slikt milj\u00f8 vil tynnere konforme belegg v\u00e6re langt mindre effektive. Imidlertid vil belegg sannsynligvis v\u00e6re tilstrekkelig for delikate komponenter i milj\u00f8er som krever begrenset beskyttelsesniv\u00e5.<\/p>\n\n\n\n<h3 id=\"3-vekt\" class=\"wp-block-heading\">3. Vekt<\/h3>\n\n\n\n<p>Det er viktig \u00e5 avgj\u00f8re om vekten av PCB er en faktor i designens endelige m\u00e5l. Ved p\u00e5f\u00f8ring av belegg er den tilf\u00f8rte vekten minimal, men n\u00e5r du bruker en harpiks, kan den ekstra vekten v\u00e6re betydelig.<\/p>\n\n\n\n<h3 id=\"4-omarbeid\" class=\"wp-block-heading\">4. Omarbeid<\/h3>\n\n\n\n<p>For applikasjoner der omarbeiding av PCB kan v\u00e6re n\u00f8dvendig p\u00e5 et senere tidspunkt, vil konform belegg v\u00e6re det mest passende valget. Belegg kan fjernes langt lettere enn harpikser som, n\u00e5r de fjernes, kan \u00f8delegge PCB under.<\/p>\n\n\n\n<h2 id=\"hvorfor-electrolube\" class=\"wp-block-heading\">Hvorfor Electrolube?<\/h2>\n\n\n\n<p>Integrert i produksjon og vedlikehold av elektroniske komponenter, er Electrolube-produkter ideelle for en rekke bransjer, inkludert bilindustri, industriell elektronikk, forbrukerelektronikk og medisinsk sektor. Spesialister innen konform belegg og innkapslingsharpikser, er Electrolube i forkant av innovasjon p\u00e5 dette omr\u00e5det.<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-rich is-provider-handterer-for-innbygging wp-block-embed-handterer-for-innbygging wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"Electrolube  Corporate Video 2017\" width=\"1200\" height=\"675\" src=\"https:\/\/www.youtube.com\/embed\/U10cgf-2l9w?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<div class=\"wp-block-buttons is-content-justification-center is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link has-red-background-color has-background\" href=\"https:\/\/www.elfadistrelec.no\/no\/manufacturer\/electrolube\/man_ebe?no-cache=true\" style=\"border-radius:2px\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>Kj\u00f8p fra v\u00e5rt Electrolube-sortiment n\u00e5<\/strong><\/a><\/div>\n<\/div>\n\n\n\n<h2 id=\"anbefalte-produkter\" class=\"wp-block-heading\">Anbefalte produkter<\/h2>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<h3 id=\"svart-polyuretanharpiks-250g\" class=\"wp-block-heading\">Svart polyuretanharpiks 250g<\/h3>\n\n\n\n<p>Denne todelte svarte innkapslingsharpiksen er formulert for \u00e5 yte til de h\u00f8yeste niv\u00e5er med utmerket motstand mot sj\u00f8vann, god vedheft til de fleste underlag og rivemotstand.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img  loading=\"lazy\"  decoding=\"async\"  width=\"1020\"  height=\"570\"  src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAA\/wAAAI6AQMAAACgqdGlAAAAA1BMVEUAAP+KeNJXAAAAAXRSTlMAQObYZgAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAF1JREFUeNrtwQEBAAAAgiD\/r25IQAEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAvBsfSQABeZS+xAAAAABJRU5ErkJggg==\"  alt=\"\"  class=\"wp-image-2879 pk-lazyload\"  data-pk-sizes=\"auto\"  data-ls-sizes=\"auto, (max-width: 1020px) 100vw, 1020px\"  data-pk-src=\"https:\/\/knowhowprod.wpengine.com\/wp-content\/uploads\/2021\/06\/30116982-01.jpg\"  data-pk-srcset=\"https:\/\/knowhow.distrelec.com\/wp-content\/uploads\/2021\/06\/30116982-01.jpg 1020w, https:\/\/knowhow.distrelec.com\/wp-content\/uploads\/2021\/06\/30116982-01.jpg?resize=300,168 300w, https:\/\/knowhow.distrelec.com\/wp-content\/uploads\/2021\/06\/30116982-01.jpg?resize=768,429 768w, https:\/\/knowhow.distrelec.com\/wp-content\/uploads\/2021\/06\/30116982-01.jpg?resize=380,212 380w, https:\/\/knowhow.distrelec.com\/wp-content\/uploads\/2021\/06\/30116982-01.jpg?resize=550,307 550w, https:\/\/knowhow.distrelec.com\/wp-content\/uploads\/2021\/06\/30116982-01.jpg?resize=800,447 800w\" ><\/figure>\n\n\n\n<div class=\"wp-block-buttons is-content-justification-center is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link has-red-background-color has-background\" href=\"https:\/\/www.elfadistrelec.no\/no\/sort-polyuretanharpiks-250-electrolube-ur5041rp250g\/p\/30116982?origPos=1&amp;q=Black%20Polyurethane%20Resin%20250g&amp;pos=1&amp;origPageSize=50&amp;track=true\" style=\"border-radius:2px\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>KJ\u00d8P N\u00c5<\/strong><\/a><\/div>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<h3 id=\"conformal-coating-200ml\" class=\"wp-block-heading\">Conformal Coating 200ml<\/h3>\n\n\n\n<p>Dette akrylformede belegget er hurtigt\u00f8rkende og holdbart, og gir utmerkede elektriske egenskaper og god vedheft for en rekke bruksomr\u00e5der. Dette belegget er motstandsdyktig mot muggsopp og kan bearbeides med letthet.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img  loading=\"lazy\"  decoding=\"async\"  width=\"1020\"  height=\"570\"  src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAA\/wAAAI6AQMAAACgqdGlAAAAA1BMVEUAAP+KeNJXAAAAAXRSTlMAQObYZgAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAF1JREFUeNrtwQEBAAAAgiD\/r25IQAEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAvBsfSQABeZS+xAAAAABJRU5ErkJggg==\"  alt=\"\"  class=\"wp-image-2880 pk-lazyload\"  data-pk-sizes=\"auto\"  data-ls-sizes=\"auto, (max-width: 1020px) 100vw, 1020px\"  data-pk-src=\"https:\/\/knowhowprod.wpengine.com\/wp-content\/uploads\/2021\/06\/30116969-01.jpg\"  data-pk-srcset=\"https:\/\/knowhow.distrelec.com\/wp-content\/uploads\/2021\/06\/30116969-01.jpg 1020w, https:\/\/knowhow.distrelec.com\/wp-content\/uploads\/2021\/06\/30116969-01.jpg?resize=300,168 300w, https:\/\/knowhow.distrelec.com\/wp-content\/uploads\/2021\/06\/30116969-01.jpg?resize=768,429 768w, https:\/\/knowhow.distrelec.com\/wp-content\/uploads\/2021\/06\/30116969-01.jpg?resize=380,212 380w, https:\/\/knowhow.distrelec.com\/wp-content\/uploads\/2021\/06\/30116969-01.jpg?resize=550,307 550w, https:\/\/knowhow.distrelec.com\/wp-content\/uploads\/2021\/06\/30116969-01.jpg?resize=800,447 800w\" ><\/figure>\n\n\n\n<div class=\"wp-block-buttons is-content-justification-center is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link has-red-background-color has-background\" href=\"https:\/\/www.elfadistrelec.no\/no\/godkjent-overflatebehandling-200ml-electrolube-hfac200h\/p\/30116969?queryFromSuggest=true\" style=\"border-radius:2px\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>KJ\u00d8P N\u00c5<\/strong><\/a><\/div>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"Trykt kretskort (PCB) brukes i nesten alle elektroniske enheter som er tilgjengelige, varierende etter applikasjon. Imidlertid er en&hellip;\n","protected":false},"author":12,"featured_media":8394,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"csco_singular_sidebar":"","csco_page_header_type":"","csco_appearance_grid":"","csco_page_load_nextpost":"","csco_post_video_location":[],"csco_post_video_location_hash":"","csco_post_video_url":"","csco_post_video_bg_start_time":0,"csco_post_video_bg_end_time":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[212,215],"tags":[],"coauthors":[],"class_list":{"0":"post-8393","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-elektronikk","8":"category-vedlikehold-reparasjon-og-drift","9":"cs-entry","10":"cs-video-wrap"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Hvordan beskytte PCB: Coatings vs Resins - KnowHow<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/knowhow.distrelec.com\/no\/vedlikehold-reparasjon-og-drift\/hvordan-beskytte-pcb-coatings-vs-resins\/\" \/>\n<meta property=\"og:locale\" content=\"nb_NO\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Hvordan beskytte PCB: Coatings vs Resins - KnowHow\" \/>\n<meta property=\"og:description\" content=\"Trykt kretskort (PCB) brukes i nesten alle elektroniske enheter som er tilgjengelige, varierende etter applikasjon. 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