{"id":5871,"date":"2023-01-27T14:45:46","date_gmt":"2023-01-27T14:45:46","guid":{"rendered":"https:\/\/longchangchemical.com\/?p=5871"},"modified":"2024-12-18T01:26:36","modified_gmt":"2024-12-18T01:26:36","slug":"solve-the-pcb-circuit-board-photoresist-white-oil-yellowing","status":"publish","type":"post","link":"https:\/\/longchangchemical.com\/fr\/solve-the-pcb-circuit-board-photoresist-white-oil-yellowing\/","title":{"rendered":"Comment r\u00e9soudre le jaunissement de l'huile blanche de la r\u00e9sine photosensible du circuit imprim\u00e9 ?"},"content":{"rendered":"

Comment r\u00e9soudre le jaunissement de l'huile blanche de la r\u00e9sine photosensible du circuit imprim\u00e9 ?<\/strong><\/h1>\n

L'huile blanche pour circuits imprim\u00e9s fait partie de l'encre photor\u00e9sistante pour circuits imprim\u00e9s, et l'encre photor\u00e9sistante a de nombreux points communs, elle est compos\u00e9e de r\u00e9sine, de monom\u00e8re, d'initiateur, de diluant, de charge, de poudre color\u00e9e, d'additifs, la principale diff\u00e9rence se refl\u00e8te dans l'utilisation de diff\u00e9rentes mati\u00e8res premi\u00e8res, cet article analyse les causes du jaunissement de l'huile blanche photor\u00e9sistante \u00e0 partir de la r\u00e9sine, de l'initiateur, de la poudre color\u00e9e et des additifs et am\u00e9liore la m\u00e9thode.<\/p>\n

 <\/p>\n

I. R\u00e9sine<\/strong><\/h2>\n

La r\u00e9sine est connue pour \u00eatre le squelette de l'encre, essentielle pour la r\u00e9sine d'huile blanche de la r\u00e9sine photor\u00e9sistante. L'encre photor\u00e9sistante (telle que l'huile verte, l'huile noire, l'huile bleue) utilis\u00e9e dans la r\u00e9sine est plus que la r\u00e9sine \u00e9poxy novolac o-cr\u00e9sol ou la r\u00e9sine \u00e9poxy bisph\u00e9nol A modifi\u00e9e par le premier greffage de l'acide acrylique pour introduire un groupe photographique \u00e0 double liaison, puis par le greffage de l'anhydride pour introduire le groupe carboxyle du r\u00e9v\u00e9lateur alcalin. La r\u00e9sine de cette structure a une structure en anneau de benz\u00e8ne, et la structure en anneau de benz\u00e8ne est facile \u00e0 produire des radicaux libres dans le rayonnement UV et \u00e0 g\u00e9n\u00e9rer un syst\u00e8me conjugu\u00e9 avec des groupes \u00e9metteurs de couleur, et finalement elle est facile \u00e0 jaunir.<\/p>\n

Cette structure de la r\u00e9sine faite d'huile blanche photor\u00e9sistante jaunit plus gravement, et ne peut fondamentalement pas r\u00e9pondre aux besoins des clients, de sorte que l'huile blanche photor\u00e9sistante actuelle utilisant la r\u00e9sine est principalement une r\u00e9sine acrylique, g\u00e9n\u00e9ralement avec un groupe \u00e9poxy de copolym\u00e8re acrylate, puis greffant de l'acide acrylique pour introduire un groupe photographique \u00e0 double liaison, et enfin greffant de l'anhydride pour introduire un groupe carboxyle de r\u00e9v\u00e9lateur alcalin.<\/p>\n

Cette structure acrylique de la r\u00e9sine alcaline r\u00e9v\u00e9latrice est due \u00e0 la r\u00e9sine \u00e9poxy acrylique aliphatique, la lumi\u00e8re ultraviolette ou la temp\u00e9rature \u00e9lev\u00e9e n'est pas facile \u00e0 produire des groupes colorants, l'effet anti-jaunissement solide est plus excellent.<\/p>\n

2. l'initiateur<\/strong><\/h2>\n

Comme le pr\u00e9sent document traite de l'huile blanche photor\u00e9sistante, le syst\u00e8me contient naturellement moins de photo-initiateurs. L'initiateur du syst\u00e8me d'encre photor\u00e9sistante est principalement l'isopropylthioanthrone (ITX), le 2-m\u00e9thyl-1-(4-m\u00e9thylthioph\u00e9nyl)-2-morpholine-1-propanone (907), le 2-benzyl-2-dim\u00e9thylamino-1-(4-morpholinoph\u00e9nyl) butanone (369), l'activit\u00e9 photo-initiatrice de ce syst\u00e8me d'initiateur est tr\u00e8s \u00e9lev\u00e9e, ce qui permet de r\u00e9pondre \u00e0 l'utilisation de la plupart des encres photor\u00e9sistantes, Mais la caract\u00e9ristique commune de ces initiateurs est qu'ils contiennent du soufre, de l'azote et d'autres h\u00e9t\u00e9roatomes. Apr\u00e8s le rayonnement ultraviolet, il est \u00e9galement facile de produire des chromophores et du jaunissement, de sorte que ce syst\u00e8me d'initiateur ne convient pas \u00e0 l'utilisation de l'huile blanche photor\u00e9sistante.<\/p>\n

L'huile blanche photor\u00e9sistante est actuellement utilis\u00e9e davantage de syst\u00e8mes d'initiateurs qui ne produisent pas facilement des produits jaunissants, tels que la 1-hydroxycyclohexyl ph\u00e9nylc\u00e9tone (HCPK), l'oxyde de phosphine 2,4,6-trim\u00e9thylbenzoyl-diph\u00e9nyle (TPO), l'oxyde de phosphine ph\u00e9nyle bis (2,4,6-trim\u00e9thylbenzoyl) (819), en particulier le TPO, qui est un photo-initiateur \u00e0 radicaux libres, adapt\u00e9 \u00e0 un syst\u00e8me \u00e0 faible jaunissement et blanc, avec un effet de photoblanchiment.<\/p>\n

 <\/p>\n

 <\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Photoinitiateur TPO<\/span><\/a><\/td>\nCAS 75980-60-8<\/td>\n<\/tr>\n
Photoinitiateur TMO<\/span><\/a><\/td>\nCAS 270586-78-2<\/td>\n<\/tr>\n
Photoinitiateur PD-01<\/span><\/a><\/td>\nCAS 579-07-7<\/td>\n<\/tr>\n
Photoinitiateur PBZ<\/span><\/a><\/td>\nCAS 2128-93-0<\/td>\n<\/tr>\n
Photoinitiateur OXE-02<\/span><\/a><\/td>\nCAS 478556-66-0<\/td>\n<\/tr>\n
Photoinitiateur OMBB<\/span><\/a><\/td>\nCAS 606-28-0<\/td>\n<\/tr>\n
Photoinitiateur MPBZ (6012)<\/span><\/a><\/td>\nCAS 86428-83-3<\/td>\n<\/tr>\n
Photoinitiateur MBP<\/span><\/a><\/td>\nCAS 134-84-9<\/td>\n<\/tr>\n
Photoinitiateur MBF<\/span><\/a><\/td>\nCAS 15206-55-0<\/td>\n<\/tr>\n
Photoinitiateur LAP<\/span><\/a><\/td>\nCAS 85073-19-4<\/td>\n<\/tr>\n
Photoinitiateur ITX<\/span><\/a><\/td>\nCAS 5495-84-1<\/td>\n<\/tr>\n
Photoinitiateur EMK<\/span><\/a><\/td>\nCAS 90-93-7<\/td>\n<\/tr>\n
Photoinitiateur EHA<\/span><\/a><\/td>\nCAS 21245-02-3<\/td>\n<\/tr>\n
Photo-initiateur EDB<\/span><\/a><\/td>\nCAS 10287-53-3<\/td>\n<\/tr>\n
Photoinitiateur DETX<\/span><\/a><\/td>\nCAS 82799-44-8<\/td>\n<\/tr>\n
Photoinitiateur CQ \/ Camphorquinone<\/span><\/a><\/td>\nCAS 10373-78-1<\/td>\n<\/tr>\n
Photoinitiateur CBP<\/span><\/a><\/td>\nCAS 134-85-0<\/td>\n<\/tr>\n
Photo-initiateur BP \/ Benzoph\u00e9none<\/span><\/a><\/td>\nCAS 119-61-9<\/td>\n<\/tr>\n
Photoinitiateur BMS<\/span><\/a><\/td>\nCAS 83846-85-9<\/td>\n<\/tr>\n
Photoinitiateur 938<\/span><\/a><\/td>\nCAS 61358-25-6<\/td>\n<\/tr>\n
Photoinitiateur 937<\/span><\/a><\/td>\nCAS 71786-70-4<\/td>\n<\/tr>\n
Photo-initiateur 819 DW<\/span><\/a><\/td>\nCAS 162881-26-7<\/td>\n<\/tr>\n
Photoinitiateur 819<\/span><\/a><\/td>\nCAS 162881-26-7<\/td>\n<\/tr>\n
Photoinitiateur 784<\/span><\/a><\/td>\nCAS 125051-32-3<\/td>\n<\/tr>\n
Photoinitiateur 754<\/span><\/a><\/td>\nCAS 211510-16-6 442536-99-4<\/td>\n<\/tr>\n
Photoinitiateur 6993<\/span><\/a><\/td>\nCAS 71449-78-0<\/td>\n<\/tr>\n
Photoinitiateur 6976<\/span><\/a><\/td>\nCAS 71449-78-0 89452-37-9 108-32-7<\/td>\n<\/tr>\n
Photoinitiateur 379<\/span><\/a><\/td>\nCAS 119344-86-4<\/td>\n<\/tr>\n
Photoinitiateur 369<\/span><\/a><\/td>\nCAS 119313-12-1<\/td>\n<\/tr>\n
Photoinitiateur 160<\/a><\/span><\/td>\nCAS 71868-15-0<\/td>\n<\/tr>\n
Photoinitiateur 1206<\/span><\/a><\/td>\n<\/td>\n<\/tr>\n
Photoinitiateur 1173<\/span><\/a><\/td>\nCAS 7473-98-5<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

Trois, poudre de couleur<\/strong><\/h2>\n

L'encre photor\u00e9sistante utilise une tr\u00e8s petite quantit\u00e9 de poudre color\u00e9e, g\u00e9n\u00e9ralement du bleu de phtalocyanine, du vert de phtalocyanine et d'autres poudres color\u00e9es organiques, la quantit\u00e9 d'additifs est g\u00e9n\u00e9ralement de quelques parties par million \u00e0 quelques milli\u00e8mes, et l'huile blanche photor\u00e9sistante utilisant de la poudre color\u00e9e est principalement du dioxyde de titane, La teneur est g\u00e9n\u00e9ralement comprise entre 20 et 40%. Le dioxyde de titane anatase et le dioxyde de titane rutile sont les principaux produits du march\u00e9 actuel. Le dioxyde de titane anatase a une meilleure diffusion de la lumi\u00e8re, une meilleure blancheur et un meilleur pouvoir couvrant, mais sa r\u00e9sistance aux intemp\u00e9ries est moins bonne, tandis que le dioxyde de titane anatase a des effets secondaires sur le polym\u00e8re et sur le vieillissement par fissuration autocatalytique ; Le dioxyde de titane rutile en raison du traitement de surface, la r\u00e9sistance aux intemp\u00e9ries est meilleure, l'huile blanche photor\u00e9sistante est utilis\u00e9e dans de nombreux panneaux d'\u00e9clairage (tels que les panneaux d'\u00e9clairage automobile, les panneaux d'\u00e9clairage LED), l'exposition \u00e0 la lumi\u00e8re \u00e0 long terme, les exigences en mati\u00e8re de r\u00e9sistance aux intemp\u00e9ries sont relativement \u00e9lev\u00e9es, c'est pourquoi le dioxyde de titane rutile est pr\u00e9f\u00e9r\u00e9. \u00c0 l'heure actuelle, le march\u00e9 utilise couramment du dioxyde de titane tel que DuPont R706, R960, R103, Ishihara R680, etc.<\/p>\n

En outre, l'huile blanche photor\u00e9sistante, pour que les gens se sentent plus blancs, ajoute g\u00e9n\u00e9ralement de la poudre de couleur en phase bleue dans le syst\u00e8me, la phtalocyanine bleue traditionnelle en phase bleue, cette poudre bleue organique sensible \u00e0 la lumi\u00e8re ultraviolette ou au vieillissement \u00e0 haute temp\u00e9rature, n'est g\u00e9n\u00e9ralement pas utilis\u00e9e ; on utilise g\u00e9n\u00e9ralement l'outremer, parce que l'outremer est une substance inorganique, qui n'est pas facile \u00e0 dissoudre \u00e0 haute temp\u00e9rature et qui n'est pas facile \u00e0 fissurer en jaunissant, en plus de l'outremer, on peut \u00e9liminer l'huile blanche photor\u00e9sistante dans la lumi\u00e8re jaune, pour am\u00e9liorer l'effet du blanc. L'effet du blanc.<\/p>\n

4. additifs<\/strong><\/h2>\n

Le syst\u00e8me d'huile blanche photor\u00e9sistante utilisant la r\u00e9sine \u00e0 haute temp\u00e9rature ou sous rayonnement ultraviolet \u00e0 long terme sera soumis \u00e0 un processus de vieillissement, ce vieillissement est le clivage du polym\u00e8re pour produire des radicaux actifs qui poursuivent le processus de r\u00e9action, puis le clivage entra\u00eene le jaunissement, de sorte que l'huile blanche photor\u00e9sistante, en plus d'ajouter un agent de nivellement, un dispersant, un antimousse et d'autres additifs g\u00e9n\u00e9raux, doit ajouter des additifs anti-jaunissement sp\u00e9cifiques, l'utilisation actuelle des antioxydants sur le march\u00e9 \u00e9tant principalement les trois suivants .<\/p>\n

4.1 Antioxydant amin\u00e9<\/p>\n

Le principe d'action des antioxydants amin\u00e9s est de pr\u00e9venir ou d'inhiber la r\u00e9action d'initiation en cha\u00eene et la r\u00e9action de croissance en cha\u00eene en capturant les radicaux peroxy, mettant ainsi fin \u00e0 la r\u00e9action en cha\u00eene des radicaux libres pour emp\u00eacher l'oxydation, en bref, pour obtenir l'effet anti-\u00e2ge, comme la p-ph\u00e9nyl\u00e8nediamine, la ph\u00e9nothiazine, mais elle est facile \u00e0 oxyder et \u00e0 d\u00e9colorer, dans l'huile blanche de la r\u00e9sine photosensible, il n'est pas facile de l'ajouter.<\/p>\n

4.2 Antioxydants ph\u00e9noliques<\/p>\n

Les antioxydants ph\u00e9noliques bloquant les bits sont des compos\u00e9s ph\u00e9noliques \u00e0 structure spatialement encombr\u00e9e, tels que BASF Irganox 1010, Irganox 1076, Japan Sumitomo GA-80.<\/p>\n

Le principe d'action des antioxydants ph\u00e9noliques \u00e0 site bloqu\u00e9 consiste principalement \u00e0 capturer les radicaux libres r\u00e9actifs pour g\u00e9n\u00e9rer des radicaux libres inactifs, de mani\u00e8re \u00e0 mettre fin \u00e0 la r\u00e9action en cha\u00eene.<\/p>\n

 <\/p>\n

Ce type d'antioxydant est un antioxydant g\u00e9n\u00e9ral pour l'huile blanche de r\u00e9sine photosensible, g\u00e9n\u00e9ralement pas utilis\u00e9 seul, et les antioxydants auxiliaires ont le meilleur effet.<\/p>\n

4.3 Antioxydant auxiliaire<\/p>\n

Les antioxydants auxiliaires sont principalement synergiques avec les antioxydants ph\u00e9noliques bloquant les bits, cette cat\u00e9gorie est principalement constitu\u00e9e d'esters de phosphite et de thioesters, leur r\u00f4le est principalement de d\u00e9truire le processus de vieillissement du polym\u00e8re g\u00e9n\u00e9r\u00e9 par les hydroperoxydes, et d'arr\u00eater \u00e0 temps le processus d'auto-oxydation du polym\u00e8re. \u00c0 l'heure actuelle, le march\u00e9 de ces produits est principalement constitu\u00e9 d'esters de phosphite de la classe trois [2,4-di-tert-butylph\u00e9nyl] phosphite (commun\u00e9ment appel\u00e9 antioxydant 168).<\/p>\n

L'huile blanche pour r\u00e9sine photosensible est g\u00e9n\u00e9ralement utilis\u00e9e avec l'antioxydant ph\u00e9nolique bit resist et l'antioxydant auxiliaire, le march\u00e9 a avec le produit, principalement dans le moulage par injection de plastique \u00e0 haute temp\u00e9rature, et l'application de l'huile blanche pour r\u00e9sine photosensible doit \u00e9galement faire l'objet de r\u00e9sultats exp\u00e9rimentaux.<\/p>\n

Dans le d\u00e9veloppement de l'huile blanche photor\u00e9sistante, il faut se concentrer sur les points ci-dessus, pr\u00eater attention \u00e0 la s\u00e9lection et \u00e0 l'ad\u00e9quation des mati\u00e8res premi\u00e8res, et enfin, gr\u00e2ce \u00e0 l'optimisation de la formule, il est possible de d\u00e9velopper rapidement une huile blanche photor\u00e9sistante pr\u00e9sentant une excellente r\u00e9sistance au jaunissement.<\/p>\n

Contactez-nous d\u00e8s maintenant !<\/b><\/strong><\/h2>\n

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Comment r\u00e9soudre le jaunissement de l'huile blanche de la r\u00e9sine photosensible du circuit imprim\u00e9 ? L'huile blanche pour photor\u00e9sine de circuit imprim\u00e9 appartient \u00e0 l'encre photor\u00e9sine de circuit imprim\u00e9, et l'encre photor\u00e9sine a de nombreux points communs, sont compos\u00e9s de r\u00e9sine, monom\u00e8re, initiateur, diluant, charge, poudre de couleur, additifs, la principale diff\u00e9rence est refl\u00e9t\u00e9e dans l'utilisation de diff\u00e9rentes mati\u00e8res premi\u00e8res, [...]<\/p>","protected":false},"author":1,"featured_media":4174,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[114],"tags":[],"class_list":["post-5871","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-catalysts-chemical-auxiliary-agents"],"yoast_head":"\nHow to solve the PCB circuit board photoresist white oil yellowing? - Longchang Chemical<\/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:\/\/longchangchemical.com\/fr\/solve-the-pcb-circuit-board-photoresist-white-oil-yellowing\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How to solve the PCB circuit board photoresist white oil yellowing? - Longchang Chemical\" \/>\n<meta property=\"og:description\" content=\"How to solve the PCB circuit board photoresist white oil yellowing? 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