{"id":8157,"date":"2025-03-24T10:45:48","date_gmt":"2025-03-24T10:45:48","guid":{"rendered":"https:\/\/longchangchemical.com\/?p=8157"},"modified":"2026-04-28T10:42:52","modified_gmt":"2026-04-28T10:42:52","slug":"uv-etching-ink-raw-materials","status":"publish","type":"post","link":"https:\/\/longchangchemical.com\/id\/uv-etching-ink-raw-materials\/","title":{"rendered":"Bahan baku tinta etsa UV - Photoinisiator"},"content":{"rendered":"<p>Sirkuit tembaga pada papan sirkuit tercetak dibentuk dengan mengetsa foil tembaga pada laminasi berlapis tembaga dengan besi klorida atau tembaga klorida. Oleh karena itu, bagian sirkuit yang tidak boleh dietsa, harus dilindungi dengan penahan. Dalam sablon, tinta resist digunakan, yang dapat mengering sendiri atau mengering dengan cahaya, tergantung pada metode pengeringannya. Tinta resist dicetak melalui layar dengan pola resist dan diawetkan pada laminasi berlapis tembaga untuk membentuk film pelindung resist. Setelah papan berlapis tembaga diukir (dan kadang-kadang dilapisi) untuk membentuk sirkuit tembaga, film tersebut dihilangkan dengan larutan alkali encer, dan film penahan tidak tertinggal di papan sirkuit tercetak, sehingga memperlihatkan sirkuit tembaga. Oleh karena itu, tinta penahan harus memiliki daya rekat yang baik pada kertas tembaga logam, tahan terhadap korosi dan pelapisan logam, serta dihilangkan seluruhnya dengan larutan alkali encer.<\/p>\n<p>Tinta tahan UV umumnya menggunakan resin akrilik epoksi yang dimodifikasi anhidrida, resin akrilik poliester asam tinggi, atau resin anhidrida maleat yang dimodifikasi sebagai resin utama, bersama dengan monomer fungsional akrilat; inisiator foto yang biasa digunakan adalah inisiator foto 651 atau sulfonat seperti 2-etilsulfokuinon; pigmen sebagian besar berwarna biru ftalosianin, Jumlahnya umumnya sekitar 1%, dan sejumlah besar bahan pengisi seperti bedak perlu ditambahkan. Untuk meningkatkan tiksotropi tinta, sejumlah silika berasap perlu ditambahkan. Secara khusus, perlu dicatat bahwa resin fotosensitif yang larut dalam alkali yang mengandung sejumlah gugus karboksil harus mampu menahan korosi dan pelapisan listrik setelah pengawetan dan pembentukan film dengan pengikatan silang, dan juga harus larut dalam larutan natrium hidroksida 3% untuk dihilangkan.<\/p>\n<p>Tinta dan inisiator foto yang dapat disembuhkan dengan UV memiliki<b> sangat bergantung dan sinergis<\/b> hubungan. Photoinitiator adalah komponen inti tinta yang dapat disembuhkan dengan UV untuk pengawetan cepat, dan performa tinta (seperti kecepatan pengawetan, daya rekat, ketahanan terhadap bahan kimia, dll.) secara langsung dipengaruhi oleh jenis, konsentrasi, dan kompatibilitas photoinitiator. Berikut ini adalah hubungan spesifik dan mekanisme kerja di antara keduanya:<\/p>\n<h3><strong>1. Photoinisiator adalah \"pemicu\" untuk pengawetan tinta UV<\/strong><\/h3>\n<p><!-- lc-qa-start --><\/p>\n<p><strong>Jawaban singkat:<\/strong> In most UV systems, photoinitiators are selected by balancing wavelength fit, through-cure, color control, and line speed. Buyers usually compare a blended package instead of one isolated product.<\/p>\n<p><!-- lc-qa-end --><\/p>\n<ul>\n<li><b>Fungsi inti<\/b>:<\/li>\n<li>Setelah menyerap energi ultraviolet (UV), photoinitiator menghasilkan radikal bebas aktif atau kation, yang memicu reaksi polimerisasi resin (misalnya, akrilat, resin epoksi) dan monomer dalam tinta, menyebabkan tinta cair secara instan berikatan silang dan mengering menjadi film padat.<\/li>\n<li><b>Tanpa inisiator foto<\/b>Tinta UV tidak dapat disembuhkan oleh cahaya, dan fungsi anti-korosi tidak dapat dicapai.<\/li>\n<li><b>Peran kunci<\/b>:\n<ul>\n<li><b>Penyerapan energi cahaya<\/b>: Inisiator harus sesuai dengan spektrum emisi sumber cahaya UV (misalnya, lampu merkuri, LED) (misalnya, LED 395 nm harus sesuai dengan inisiator dengan panjang gelombang serapan 395-405 nm).<\/li>\n<li><b>Transfer energi<\/b>: Energi cahaya yang diserap diubah menjadi energi kimia untuk memicu ikatan silang resin.<\/li>\n<li><b>Mengatasi penghambatan oksigen<\/b>: Beberapa inisiator (misalnya benzofenon pengupas hidrogen + amina) dapat mengurangi efek penghambatan oksigen pada reaksi pengawetan.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h3><strong>2. Jenis photoinitiator menentukan karakteristik pengawetan tinta<\/strong><\/h3>\n<h4><strong>(1) Mencocokkan jenis inisiator dengan resin tinta<\/strong><\/h4>\n<ul>\n<li><b>Inisiator radikal<\/b> (mis. TPO, Irgacure 907):\n<ul>\n<li>Cocok untuk<b> resin akrilat<\/b> sistem, kecepatan curing yang cepat, tetapi dapat dihambat oleh oksigen.<\/li>\n<li>Umumnya digunakan dalam tinta masker solder PCB dan skenario dengan persyaratan pengawetan permukaan yang tinggi.<\/li>\n<\/ul>\n<\/li>\n<li><b>Inisiator kationik<\/b> (misalnya garam tiuram):\n<ul>\n<li>cocok untuk<b> resin epoksi<\/b> sistem. Pengawetan tidak terlalu terpengaruh oleh oksigen, dan cocok untuk pengawetan dalam.<\/li>\n<li>Tinta ini sebagian besar digunakan dalam tinta yang memerlukan ketahanan suhu tinggi atau ketahanan kimiawi yang lebih baik (seperti sebagian bahan kemasan).<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h4><strong>(2) Inisiator memengaruhi performa tinta<\/strong><\/h4>\n<ul>\n<li><b>Kedalaman pengawetan<\/b>: Inisiator pengawetan dalam, seperti bis-asil fosfin oksida (BAPO) dapat memastikan pengawetan internal yang sempurna pada film tebal atau tinta dengan daya pantul tinggi (seperti putih).<\/li>\n<li><b>Kecenderungan menguning<\/b>: Sebagian inisiator (seperti ITX) dapat terurai setelah terpapar cahaya untuk menghasilkan kromofor, menyebabkan tinta berubah warna. Jenis yang menguning rendah (seperti Irgacure 819) harus dipilih.<\/li>\n<li><b>Migrasi:<\/b> Tinta untuk kemasan makanan atau penggunaan medis memerlukan penggunaan inisiator migrasi rendah (seperti TPO-L) untuk mencegah inisiator residu keluar dan mencemari.<\/li>\n<\/ul>\n<h3><strong>3. Optimasi sinergis dalam desain formulasi<\/strong><\/h3>\n<ul>\n<li><b>Konsentrasi inisiator:<\/b>\n<ul>\n<li>Jika konsentrasinya terlalu rendah, pengawetan tidak akan sempurna dan ketahanannya akan buruk;<\/li>\n<li>jika konsentrasinya terlalu tinggi, akan ada banyak inisiator residu, yang dapat mengurangi daya rekat atau menyebabkan masalah migrasi.<\/li>\n<li><b>Metode pengoptimalan<\/b>: Jumlah penambahan yang lazim adalah 1-5% dari total massa tinta, dan rasio optimal perlu ditentukan melalui eksperimen.<\/li>\n<\/ul>\n<\/li>\n<li><b>Strategi pemrakarsa campuran<\/b>:\n<ul>\n<li><b>Permukaan + pengawetan dalam<\/b>: Contohnya, pada tinta masker solder PCB, TPO (pengawetan permukaan cepat) dan Irgacure 819 (penetrasi dalam) digunakan dalam kombinasi untuk memastikan pengawetan secara keseluruhan.<\/li>\n<li><b>Respons spektrum luas<\/b>: Menggabungkan inisiator dengan panjang gelombang penyerapan yang berbeda (misalnya Irgacure 2959 + ITX) untuk beradaptasi dengan sumber cahaya multi-panjang gelombang (misalnya lampu merkuri).<\/li>\n<\/ul>\n<\/li>\n<li><b>Sinergi aditif<\/b>:\n<ul>\n<li><b>Sinergis amina<\/b> (misalnya EDAB): Meningkatkan efisiensi pengawetan inisiator radikal bebas di udara.<\/li>\n<li><b>Stabilisator<\/b>: Mencegah penguraian dini inisiator selama penyimpanan tinta.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h3>4. Masalah umum dan relevansi dalam aplikasi praktis<\/h3>\n<table style=\"border-collapse: collapse; width: 560.27pt;\" border=\"0\" width=\"747\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr style=\"height: 34.50pt;\">\n<td class=\"et2\" style=\"height: 34.50pt; width: 144.75pt;\" width=\"193\" height=\"46\">Fenomena masalah<\/td>\n<td class=\"et2\" style=\"width: 175.50pt;\" width=\"234\">Hubungan dengan penggagas foto<\/td>\n<td class=\"et2\" style=\"width: 240.00pt;\" width=\"320\">Solusi<\/td>\n<\/tr>\n<tr style=\"height: 69.00pt;\">\n<td class=\"et3\" style=\"height: 69.00pt; width: 144.75pt;\" width=\"193\" height=\"92\">Pengawetan yang tidak sempurna<\/td>\n<td class=\"et3\" style=\"width: 175.50pt;\" width=\"234\">Ketidakcocokan antara spektrum penyerapan inisiator dan sumber cahaya atau konsentrasi yang tidak mencukupi<\/td>\n<td class=\"et3\" style=\"width: 240.00pt;\" width=\"320\">Ganti inisiator dengan salah satu panjang gelombang yang cocok atau tingkatkan konsentrasinya<\/td>\n<\/tr>\n<tr style=\"height: 34.50pt;\">\n<td class=\"et3\" style=\"height: 34.50pt; width: 144.75pt;\" width=\"193\" height=\"46\">Tinta menguning<\/td>\n<td class=\"et3\" style=\"width: 175.50pt;\" width=\"234\">Kromofor dari fotolisis inisiator (misalnya ITX)<\/td>\n<td class=\"et3\" style=\"width: 240.00pt;\" width=\"320\">Beralihlah ke inisiator yang menguning rendah (mis. Irgacure 784)<\/td>\n<\/tr>\n<tr style=\"height: 34.50pt;\">\n<td class=\"et3\" style=\"height: 34.50pt; width: 144.75pt;\" width=\"193\" height=\"46\">Daya rekat yang buruk<\/td>\n<td class=\"et3\" style=\"width: 175.50pt;\" width=\"234\">Sisa inisiator atau ikatan silang resin yang tidak mencukupi<\/td>\n<td class=\"et3\" style=\"width: 240.00pt;\" width=\"320\">Optimalkan konsentrasi inisiator dan tambahkan zat penghubung silan<\/td>\n<\/tr>\n<tr style=\"height: 34.50pt;\">\n<td class=\"et3\" style=\"height: 34.50pt; width: 144.75pt;\" width=\"193\" height=\"46\">Tidak diawetkan di area yang teduh<\/td>\n<td class=\"et3\" style=\"width: 175.50pt;\" width=\"234\">Penetrasi inisiator foto yang tidak memadai<\/td>\n<td class=\"et3\" style=\"width: 240.00pt;\" width=\"320\">Tambahkan inisiator pengawet dalam (misalnya BAPO)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><!-- lc-commercial-start --><\/p>\n<h2>Bagaimana formulator biasanya mengevaluasi topik fotoinisiator ini<\/h2>\n<p>Ketika pembeli teknis atau formulator menyaring fotoinisiator, kerangka keputusan yang paling berguna biasanya adalah kualitas pengawetan ditambah kesesuaian aplikasi: paket mana yang mengawetkan secara andal, menjaga penampilan tetap dapat diterima, dan masih berfungsi di bawah kondisi lampu, ketebalan film, dan substrat dari proses sebenarnya.<\/p>\n<ul>\n<li><strong>Cocokkan paketnya dengan lampunya terlebih dahulu:<\/strong> lampu merkuri, LED UV, dan sistem cahaya tampak dapat memberi peringkat fotoinisiator yang sama secara sangat berbeda.<\/li>\n<li><strong>Periksa pengawetan kedalaman dan pengawetan permukaan secara terpisah:<\/strong> Film yang terasa kering di permukaan pun masih bisa lemah di bagian bawahnya.<\/li>\n<li><strong>Keseimbangan warna kuning dengan reaktivitas:<\/strong> rute penyembuhan terdalam yang paling kuat tidak selalu menjadi pilihan komersial terbaik jika risiko warna atau migrasi menjadi tidak dapat diterima.<\/li>\n<li><strong>Gunakan formula akhir sebagai tolok ukur:<\/strong> Beban pigmen, paket monomer, dan ketebalan film semuanya dapat mengubah peringkat yang tampak dari inisiator yang sama.<\/li>\n<\/ul>\n<h3>Referensi produk yang direkomendasikan<\/h3>\n<ul>\n<li><strong><a href=\"https:\/\/longchangchemical.com\/id\/product\/photoinitiator-tpo-l-cas-84434-11-7\/\">CHLUMINIT TPO-L<\/a>:<\/strong> A strong low-yellowing reference for LED-oriented UV systems.<\/li>\n<li><strong><a href=\"https:\/\/longchangchemical.com\/id\/product\/cas-270586-78-2\/\">CHLUMINIT TMO<\/a>:<\/strong> Poin perbandingan yang berharga ketika diskusi penurunan penguningan atau penggantian TPO menjadi penting.<\/li>\n<li><strong><a href=\"https:\/\/longchangchemical.com\/id\/product\/photoinitiator-819-irgacure-819-cas-162881-26-7\/\">CHLUMINIT 819<\/a>:<\/strong> Berguna saat formulasi memerlukan penyerapan yang lebih kuat dan dukungan pengeringan yang lebih mendalam.<\/li>\n<li><strong><a href=\"https:\/\/longchangchemical.com\/id\/product\/irgacure-1173-cas-7473-98-5\/\">CHLUMINIT 1173<\/a>:<\/strong> Titik perbandingan praktis untuk inisiasi UV gelombang pendek klasik.<\/li>\n<\/ul>\n<h3>FAQ untuk pembeli dan formulator<\/h3>\n<p><strong>Mengapa paket fotoinisiator campuran umum digunakan?<\/strong><br \/>Karena satu produk mungkin mengontrol penguningan atau kesesuaian lampu dengan baik, sementara produk lain meningkatkan kedalaman pengeringan atau kinerja kecepatan garis, sehingga paket lengkap sering kali lebih kuat daripada satu tingkatan saja.<\/p>\n<p><strong>Apakah penyembuhan yang tidak lengkap selalu harus diselesaikan dengan menambahkan lebih banyak inisiator?<\/strong><br \/>Tidak secara otomatis. Keterbatasan sebenarnya mungkin terletak pada lampu, ketebalan film, nuansa pigmen, atau sisa sistem reaktif daripada dosis yang kurang.<\/p>\n<p><!-- lc-commercial-end --><\/p>\n<h2><strong><b>Hubungi Kami Sekarang!<\/b><\/strong><\/h2>\n<h4><strong><b>Jika Anda membutuhkan Harga atau pengujian sampel, silakan isi informasi kontak Anda di formulir di bawah ini, kami biasanya akan menghubungi Anda dalam waktu 24 jam. Anda juga bisa mengirim email kepada saya <a href=\"mailto:info@longchangchemical.com\"><span style=\"color: #00ccff;\">info@longchangchemical.com<\/span><\/a>\u00a0selama jam kerja (8:30 pagi hingga 6:00 sore UTC+8 Senin-Sabtu) atau gunakan obrolan langsung situs web untuk mendapatkan balasan secepatnya.<\/b><\/strong><\/h4>\n<p>&nbsp;<\/p>\n<table style=\"border-collapse: collapse; width: 435.77pt;\" border=\"0\" width=\"581\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt; width: 215.25pt;\" width=\"287\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/id\/product\/photoinitiator-tpo-cas-75980-60-8\/\"><span style=\"color: #00ccff;\">TPO pemrakarsa foto<\/span><\/a><\/td>\n<td style=\"width: 220.50pt;\" width=\"294\">CAS 75980-60-8<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/id\/product\/cas-270586-78-2\/\"><span style=\"color: #00ccff;\">Pemrakarsa foto TMO<\/span><\/a><\/td>\n<td>CAS 270586-78-2<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/id\/product\/photoinitiator-pd-01-cas-579-07-7\/\"><span style=\"color: #00ccff;\">Pemrakarsa foto PD-01<\/span><\/a><\/td>\n<td>CAS 579-07-7<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/id\/product\/photoinitiator-pbz-cas-2128-93-0\/\"><span style=\"color: #00ccff;\">Pemrakarsa foto PBZ<\/span><\/a><\/td>\n<td>CAS 2128-93-0<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/id\/product\/photoinitiator-oxe-02-cas-478556-66-0\/\"><span style=\"color: #00ccff;\">Pemrakarsa foto OXE-02<\/span><\/a><\/td>\n<td>CAS 478556-66-0<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/id\/product\/photoinitiator-ombb\/\"><span style=\"color: #00ccff;\">Pemrakarsa foto OMBB<\/span><\/a><\/td>\n<td>CAS 606-28-0<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/id\/product\/photoinitiator-mpbz-6012\/\"><span style=\"color: #00ccff;\">Pemrakarsa foto MPBZ (6012)<\/span><\/a><\/td>\n<td>CAS 86428-83-3<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/id\/product\/photoinitiator-mbp-cas-134-84-9\/\"><span style=\"color: #00ccff;\">Pemrakarsa foto MBP<\/span><\/a><\/td>\n<td>CAS 134-84-9<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/id\/product\/photoinitiator-mbf-cas-15206-55-0\/\"><span style=\"color: #00ccff;\">Pemrakarsa foto MBF<\/span><\/a><\/td>\n<td>CAS 15206-55-0<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/id\/product\/photoinitiator-lap-cas-85073-19-4\/\"><span style=\"color: #00ccff;\">PAPAN inisiator foto<\/span><\/a><\/td>\n<td>CAS 85073-19-4<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/id\/product\/photoinitiator-itx-cas-5495-84-1\/\"><span style=\"color: #00ccff;\">Pemrakarsa foto ITX<\/span><\/a><\/td>\n<td>CAS 5495-84-1<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/id\/product\/photoinitiator-emk\/\"><span style=\"color: #00ccff;\">Pemrakarsa foto EMK<\/span><\/a><\/td>\n<td>CAS 90-93-7<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/id\/product\/photoinitiator-eha-cas-21245-02-3\/\"><span style=\"color: #00ccff;\">Pemrakarsa foto EHA<\/span><\/a><\/td>\n<td>CAS 21245-02-3<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/id\/product\/photoinitiator-edb-cas-10287-53-3\/\"><span style=\"color: #00ccff;\">Pemrakarsa foto EDB<\/span><\/a><\/td>\n<td>CAS 10287-53-3<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/id\/product\/photoinitiator-detx-cas-82799-44-8\/\"><span style=\"color: #00ccff;\">Pemrakarsa foto DETX<\/span><\/a><\/td>\n<td>CAS 82799-44-8<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/id\/product\/photoinitiator-cq\/\"><span style=\"color: #00ccff;\">Pemrakarsa foto CQ \/ Kamperquinon<\/span><\/a><\/td>\n<td>CAS 10373-78-1<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/id\/product\/photoinitiator-cbp-cas-134-85-0\/\"><span style=\"color: #00ccff;\">Pemrakarsa foto CBP<\/span><\/a><\/td>\n<td>CAS 134-85-0<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/id\/product\/photoinitiator-bp-cas-119-61-9\/\"><span style=\"color: #00ccff;\">Pemrakarsa foto BP \/ Benzofenon<\/span><\/a><\/td>\n<td>CAS 119-61-9<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/id\/product\/photoinitiator-bms\/\"><span style=\"color: #00ccff;\">BMS inisiator foto<\/span><\/a><\/td>\n<td>CAS 83846-85-9<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/id\/product\/photoinitiator-938\/\"><span style=\"color: #00ccff;\">Pemrakarsa foto 938<\/span><\/a><\/td>\n<td>CAS 61358-25-6<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/id\/product\/photoinitiator-937-cas-71786-70-4\/\"><span style=\"color: #00ccff;\">Pemrakarsa foto 937<\/span><\/a><\/td>\n<td>CAS 71786-70-4<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/id\/product\/photoinitiator-819-dw\/\"><span style=\"color: #00ccff;\">Pemrakarsa foto 819 DW<\/span><\/a><\/td>\n<td>CAS 162881-26-7<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/id\/product\/photoinitiator-819-irgacure-819-cas-162881-26-7\/\"><span style=\"color: #00ccff;\">Pemrakarsa Foto 819<\/span><\/a><\/td>\n<td>CAS 162881-26-7<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/id\/product\/photoinitiator-784-cas-125051-32-3\/\"><span style=\"color: #00ccff;\">Pemrakarsa foto 784<\/span><\/a><\/td>\n<td>CAS 125051-32-3<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/id\/product\/photoinitiator-754-cas-211510-16-6-442536-99-4\/\"><span style=\"color: #00ccff;\">Pemrakarsa foto 754<\/span><\/a><\/td>\n<td>CAS 211510-16-6 442536-99-4<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/id\/product\/photoinitiator-6993-cas-71449-78-0\/\"><span style=\"color: #00ccff;\">Pemrakarsa foto 6993<\/span><\/a><\/td>\n<td>CAS 71449-78-0<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/id\/product\/photoinitiator-6976\/\"><span style=\"color: #00ccff;\">Pemrakarsa foto 6976<\/span><\/a><\/td>\n<td>CAS 71449-78-0 89452-37-9 108-32-7<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/id\/product\/photoinitiator-379-cas-119344-86-4\/\"><span style=\"color: #00ccff;\">Pemrakarsa foto 379<\/span><\/a><\/td>\n<td>CAS 119344-86-4<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/id\/product\/photoinitiator-369-cas-119313-12-1\/\"><span style=\"color: #00ccff;\">Pemrakarsa foto 369<\/span><\/a><\/td>\n<td>CAS 119313-12-1<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><span style=\"color: #00ccff;\"><a style=\"color: #00ccff;\" href=\"https:\/\/longchangchemical.com\/id\/product\/photoinitiator-160\/\">Pemrakarsa Foto 160<\/a><\/span><\/td>\n<td>CAS 71868-15-0<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/id\/product\/photoinitiator-1206\/\"><span style=\"color: #00ccff;\">Pemrakarsa Foto 1206<\/span><\/a><\/td>\n<td><\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/id\/product\/irgacure-1173-cas-7473-98-5\/\"><span style=\"color: #00ccff;\">Pemrakarsa foto 1173<\/span><\/a><\/td>\n<td>CAS 7473-98-5<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;<\/p>","protected":false},"excerpt":{"rendered":"<p>The copper circuits on the printed circuit board are formed by etching the copper foil on the copper-clad laminate with ferric chloride or copper chloride. 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