UV lehim diren\u00e7li m\u00fcrekkep
\nElektronik \u00fcr\u00fcn montaj s\u00fcre\u00e7lerinin yar\u0131 otomasyonu ve otomasyonu ve montaj hatt\u0131 operasyonlar\u0131n\u0131n te\u015fvik edilmesiyle, \u00fcretim verimlili\u011fini art\u0131rmak ve maliyetleri d\u00fc\u015f\u00fcrmek i\u00e7in 1960'larda devre kartlar\u0131n\u0131n lehimlenmesi i\u00e7in dalga lehimleme veya dald\u0131rma lehimleme s\u00fcre\u00e7leri benimsenmi\u015ftir. Gereksiz lehimin bask\u0131l\u0131 devre kart\u0131na yap\u0131\u015fmas\u0131n\u0131 \u00f6nlemek i\u00e7in, kart\u0131n y\u00fczeyine kal\u0131c\u0131 bir koruyucu film uygulamak ve b\u00f6ylece kart\u0131n sonraki sprey lehimleme, dald\u0131rma lehimleme ve dalga lehimleme i\u015flemleri s\u0131ras\u0131nda lehime yap\u0131\u015fmamas\u0131n\u0131 sa\u011flamak gerekir. Bu, lehim k\u00f6pr\u00fclemesinin neden oldu\u011fu k\u0131sa devreleri etkili bir \u015fekilde \u00f6nleyebilir ve \u00fcretim s\u00fcrecinde y\u00fcksek derecede otomasyon sa\u011flayabilir. Buna ek olarak, bu kal\u0131c\u0131 koruyucu film, devreler ve t\u00fcm kart y\u00fczeyi aras\u0131ndaki elektrik yal\u0131t\u0131m\u0131n\u0131 b\u00fcy\u00fck \u00f6l\u00e7\u00fcde iyile\u015ftirir, b\u00f6ylece bask\u0131l\u0131 devre kart\u0131n\u0131n kablo yo\u011funlu\u011funu ve \u00e7al\u0131\u015fma kararl\u0131l\u0131\u011f\u0131n\u0131 art\u0131r\u0131r. Ayr\u0131ca devre oksidasyonuna, nem erozyonuna ve yabanc\u0131 cisimlerden kaynaklanan \u00e7iziklere kar\u015f\u0131 \u00f6nleyici bir etkiye sahiptir, b\u00f6ylece bask\u0131l\u0131 devre kart\u0131n\u0131n hizmet \u00f6mr\u00fcn\u00fc uzat\u0131r. Lehim maskesi m\u00fcrekkebi bu koruyucu tabakan\u0131n \u00fcretimi i\u00e7in geli\u015ftirilmi\u015f \u00f6nemli bir malzemedir. En \u00f6nemli i\u015flevi lehimlemeyi \u00f6nlemektir ve y\u00fcksek s\u0131cakl\u0131ktaki lehime (dalga lehimleme s\u0131cakl\u0131\u011f\u0131 260\u00b0C) dayan\u0131kl\u0131 olmas\u0131n\u0131n yan\u0131 s\u0131ra nem ge\u00e7irmez, korozyon \u00f6nleyici, k\u00fcflenmez, oksidasyon \u00f6nleyici, yal\u0131tkan ve dekoratif olmal\u0131d\u0131r. Lehim maskesi m\u00fcrekkep kaplama i\u015flemi, bask\u0131l\u0131 devre kart\u0131 i\u015flemede ana s\u00fcre\u00e7lerden biri haline gelmi\u015ftir
\nSerigrafi bask\u0131da lehim direnci, lehim direnci m\u00fcrekkebi kullan\u0131larak uygulan\u0131r. Lehim diren\u00e7 m\u00fcrekkebi iki tipte mevcuttur: k\u00fcrleme y\u00f6ntemine ba\u011fl\u0131 olarak \u0131s\u0131yla k\u00fcrlenen ve \u0131\u015f\u0131kla k\u00fcrlenen. Lehim diren\u00e7 m\u00fcrekkebi \u015fu anda \u00e7o\u011funlukla \u0131\u015f\u0131kla sertle\u015fen lehim diren\u00e7 m\u00fcrekkebidir. Lehim diren\u00e7 m\u00fcrekkebi, pozitif bir lehim diren\u00e7 deseni ile serigrafi bask\u0131s\u0131 ile \u00f6nceden yap\u0131lm\u0131\u015f bak\u0131r devre ile bask\u0131l\u0131 devre kart\u0131 \u00fczerinde k\u00fcrlendikten sonra, bir lehim diren\u00e7 koruyucu film olu\u015fur. Karakter m\u00fcrekkebi bas\u0131ld\u0131ktan sonra, bitmi\u015f \u00fcr\u00fcn denetimden ge\u00e7tikten sonra yap\u0131l\u0131r. Lehim maskesi bask\u0131l\u0131 devre kart\u0131 \u00fczerinde kal\u0131c\u0131 bir kaplamad\u0131r, bu nedenle m\u00fckemmel elektriksel, fiziksel ve mekanik \u00f6zelliklere sahip olmas\u0131n\u0131n yan\u0131 s\u0131ra i\u015flem sonras\u0131 dalga lehimleme s\u0131ras\u0131nda 260\u00b0C ve askeri \u00fcr\u00fcnler i\u00e7in 288\u00b0C gibi y\u00fcksek s\u0131cakl\u0131klara dayan\u0131kl\u0131 olmal\u0131d\u0131r.<\/p>\n
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UV lehim diren\u00e7li m\u00fcrekkep oligomerleri esas olarak bisfenol A epoksi akrilik re\u00e7ine, fenolik epoksi akrilik re\u00e7ine ve poli\u00fcretan akrilik re\u00e7ine gibi iyi \u0131s\u0131 direncine, iyi yal\u0131t\u0131ma ve bak\u0131ra iyi yap\u0131\u015fmaya sahip re\u00e7ineleri se\u00e7er. \u015eu anda fenolik epoksi akrilik re\u00e7ine yayg\u0131n olarak kullan\u0131lmaktad\u0131r. Reaktif seyreltici, tek fonksiyonlu (metil) hidroksiakrilat ile birle\u015ftirilmi\u015f \u00e7ok fonksiyonlu bir akrilatt\u0131r. Hidroksiakrilat, m\u00fcrekkebin bak\u0131ra yap\u0131\u015fmas\u0131n\u0131 iyile\u015ftirmek i\u00e7in faydal\u0131d\u0131r. Fotoba\u015flat\u0131c\u0131 esas olarak 651 veya 2-etiltiyoksantondur. Pigment esas olarak ftalosiyanin ye\u015filidir ve miktar\u0131 genellikle 1%'yi ge\u00e7mez. Is\u0131 direncini art\u0131rmak ve hacim b\u00fcz\u00fclmesini azaltmak i\u00e7in m\u00fcrekkebe daha fazla dolgu maddesi eklenebilir. M\u00fcrekkebin bak\u0131ra yap\u0131\u015fmas\u0131n\u0131 iyile\u015ftirmek i\u00e7in, monometil metakrilat PM-1 veya dimetil metakrilat PM-2 gibi 1% ila 2% yap\u0131\u015fma artt\u0131r\u0131c\u0131lar\u0131n yan\u0131 s\u0131ra k\u00f6p\u00fck gidericiler, dengeleyici maddeler ve polimerizasyon inhibit\u00f6rleri gibi di\u011fer katk\u0131 maddeleri uygun miktarlarda eklenmelidir.<\/p>\n
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Teknik al\u0131c\u0131lar veya form\u00fclat\u00f6rler foto ba\u015flatanlar\u0131 incelerken, en kullan\u0131\u015fl\u0131 karar \u00e7er\u00e7evesi genellikle k\u00fcr kalitesi art\u0131 uygulama uygunlu\u011fudur: hangi paket g\u00fcvenilir bir \u015fekilde k\u00fcrlenir, g\u00f6r\u00fcn\u00fcm\u00fc kabul edilebilir tutar ve yine de ger\u00e7ek s\u00fcrecin lamba, film kal\u0131nl\u0131\u011f\u0131 ve alt tabaka ko\u015fullar\u0131 alt\u0131nda \u00e7al\u0131\u015f\u0131r.<\/p>\n
Kar\u0131\u015f\u0131k foto ba\u015flat\u0131c\u0131 paketleri neden bu kadar yayg\u0131n?<\/strong> Tamamlanmam\u0131\u015f k\u00fcr her zaman daha fazla ba\u015flat\u0131c\u0131 eklenerek mi \u00e7\u00f6z\u00fclmelidir?<\/strong> <\/p>\n <\/p>\n H\u0131zl\u0131 cevap:<\/strong> \u00c7o\u011fu UV sisteminde, foto ba\u015f la t\u0131c \u0131 lar dalga boyu uyumu, tam k\u00fcrlenme, renk kontrol\u00fc ve hat h\u0131z\u0131 aras\u0131ndaki denge ile se\u00e7ilir. Al\u0131c\u0131lar genellikle tek bir izole \u00fcr\u00fcn yerine harmanlanm\u0131\u015f bir paketi kar\u015f\u0131la\u015ft\u0131r\u0131r.<\/p>\n <\/p>\n <\/p>\n <\/p>","protected":false},"excerpt":{"rendered":" UV solder resist ink With the semi-automation and automation of electronic product assembly processes and the promotion of assembly line operations, wave soldering or dip soldering processes were adopted for<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[185],"tags":[],"class_list":["post-8159","post","type-post","status-publish","format-standard","hentry","category-photoinitiator"],"yoast_head":"\n
\u00c7\u00fcnk\u00fc bir \u00fcr\u00fcn sararmay\u0131 engelleyebilir veya lamba uyumunu iyile\u015ftirebilirken, di\u011feri k\u00fcr derinli\u011fini veya hat h\u0131z\u0131 performans\u0131n\u0131 art\u0131rabilir, bu nedenle tam paket genellikle tek bir dereceden daha g\u00fc\u00e7l\u00fcd\u00fcr.<\/p>\n
Otomatik olarak de\u011fil. Ger\u00e7ek s\u0131n\u0131rlama, basit dozaj eksikli\u011finden ziyade lamba, film kal\u0131nl\u0131\u011f\u0131, pigment g\u00f6lgelendirmesi veya reaktif sistemin geri kalan\u0131 olabilir.<\/p>\n\u015eimdi Bize Ula\u015f\u0131n!<\/b><\/strong><\/h2>\n
Fiyat veya numune testine ihtiyac\u0131n\u0131z varsa, l\u00fctfen a\u015fa\u011f\u0131daki forma ileti\u015fim bilgilerinizi girin, genellikle 24 saat i\u00e7inde sizinle ileti\u015fime ge\u00e7ece\u011fiz. Bana e-posta da g\u00f6nderebilirsiniz info@longchangchemical.com<\/span><\/a>\u00a0\u00c7al\u0131\u015fma saatleri i\u00e7inde (8:30 - 6:00 UTC+8 Pzt.~Sat.) veya h\u0131zl\u0131 yan\u0131t almak i\u00e7in web sitesi canl\u0131 sohbetini kullan\u0131n.<\/b><\/strong><\/h4>\n
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