{"id":8558,"date":"2025-05-13T06:50:10","date_gmt":"2025-05-13T06:50:10","guid":{"rendered":"https:\/\/changhongchemical.com\/?p=8558"},"modified":"2026-04-27T11:15:57","modified_gmt":"2026-04-27T11:15:57","slug":"introduction-to-photoinitiators-and-their-standards","status":"publish","type":"post","link":"https:\/\/changhongchemical.com\/pt\/introduction-to-photoinitiators-and-their-standards\/","title":{"rendered":"Introdu\u00e7\u00e3o aos fotoiniciadores e seus padr\u00f5es"},"content":{"rendered":"<p>Setor de revestimentos:<br \/>\nI\u3001Termos e defini\u00e7\u00f5es fotoiniciador (fotoiniciador), de acordo com GB\/T 41764-2022 \"Determination of the content of photoinitiators in radiation-curing coatings Gas Chromatography-Mass Spectrometry Method\" (Determina\u00e7\u00e3o do conte\u00fado de fotoiniciadores em revestimentos de cura por radia\u00e7\u00e3o - M\u00e9todo de cromatografia gasosa e espectrometria de massa) em 3.1, descrito como: uma subst\u00e2ncia que pode absorver energia radiante e sofrer altera\u00e7\u00f5es qu\u00edmicas por excita\u00e7\u00e3o, gerando intermedi\u00e1rios reativos (radicais livres ou c\u00e1tions) com a capacidade de iniciar a polimeriza\u00e7\u00e3o.<br \/>\nII\u3001Normas relevantes GB\/T 41764-2022 \"Determina\u00e7\u00e3o do conte\u00fado de fotoiniciador em revestimentos de cura por radia\u00e7\u00e3o Cromatografia gasosa\/Espectrometria de massa\" HG\/T 5778-2020 \"Revestimentos de cura ultravioleta (UV) para materiais de embalagem de cosm\u00e9ticos\" SN\/T 4317-2015 \"Detec\u00e7\u00e3o da migra\u00e7\u00e3o de 7 fotoiniciadores em alimentos exportados Cromatografia l\u00edquida\/Espectrometria de massa\".<br \/>\nIV\u3001O mecanismo e a classifica\u00e7\u00e3o dos fotoiniciadores na absor\u00e7\u00e3o direta ou indireta de energia luminosa, as mol\u00e9culas iniciadoras do estado b\u00e1sico saltaram para o estado linear \u00fanico excitado, por meio do salto de corrida entre sistemas para o estado trilinear excitado. No estado unilinear ou trilinear excitado, ap\u00f3s uma a\u00e7\u00e3o qu\u00edmica bimolecular ou de mol\u00e9cula \u00fanica, a produ\u00e7\u00e3o da polimeriza\u00e7\u00e3o do mon\u00f4mero pode ser acionada pelos fragmentos ativos (radicais livres, c\u00e1tions, \u00e2nions etc.), desencadeando assim a cura por reticula\u00e7\u00e3o da polimeriza\u00e7\u00e3o do mon\u00f4mero. H\u00e1 muitos tipos de fotoiniciadores. De acordo com os diferentes mecanismos de ativa\u00e7\u00e3o, os fotoiniciadores podem ser divididos em fotoiniciadores cati\u00f4nicos e fotoiniciadores de radicais livres, dos quais os fotoiniciadores de radicais livres t\u00eam a mais ampla gama de aplica\u00e7\u00f5es.<\/p>\n<p>4. V\u00e1rios fotoiniciadores convencionais e suas \u00e1reas de aplica\u00e7\u00e3o<br \/>\n907 e fotoiniciadores ITX ou DETX usados em conjunto com o sistema colorido, as principais \u00e1reas de aplica\u00e7\u00e3o para decora\u00e7\u00e3o de resid\u00eancias etc.; 1173 e TPO com melhor efeito de cura, as principais \u00e1reas de aplica\u00e7\u00e3o para m\u00f3veis e verniz de madeira, revestimentos de piso, decora\u00e7\u00f5es de resid\u00eancias, As principais \u00e1reas de aplica\u00e7\u00e3o s\u00e3o: verniz de madeira para m\u00f3veis, revestimento de piso, revestimento eletr\u00f4nico 3C, interior de autom\u00f3veis, decora\u00e7\u00e3o de resid\u00eancias, produtos pl\u00e1sticos etc. 184 pode ser usado com TPO e outros fotoiniciadores de baixo amarelamento no sistema branco, usado principalmente em: verniz de madeira para m\u00f3veis, revestimento de pisos, revestimento eletr\u00f4nico 3C, interior de autom\u00f3veis, decora\u00e7\u00e3o de casas, produtos pl\u00e1sticos etc.<br \/>\n1. 184<br \/>\nO comprimento de onda de absor\u00e7\u00e3o m\u00e1xima \u00e9 de 333 nm, usado principalmente para iniciar a cura r\u00e1pida de sistemas de acrilato e metacrilato, dosagem de refer\u00eancia de 2% a 4%, tempo de cura de 190 s e 140 s, respectivamente.<\/p>\n<p>Tamb\u00e9m conhecido como: 1-hidroxiciclohexil fenil cetona<br \/>\nNome em ingl\u00eas: 1-Hydroxycyclohexyl phenyl ketone<br \/>\nN\u00ba CAS: <a href=\"https:\/\/changhongchemical.com\/product\/photoinitiator-184-cas-947-19-3\/\">947-19-3<\/a><br \/>\nApar\u00eancia: Cristal branco ou quase branco<br \/>\nTransmit\u00e2ncia: 425nm\u226598,0%, 500nm\u226599,0% (1g\/10mL de tolueno)<br \/>\nPico de absor\u00e7\u00e3o: 246nm, 280nm, 333nm (em solu\u00e7\u00e3o de metanol)<br \/>\nSolubilidade: 20\u2103 (g\/100g de solu\u00e7\u00e3o)<\/p>\n<p>2. 907<br \/>\n907 pode estar no processo de cura da tinta, a absor\u00e7\u00e3o da energia da radia\u00e7\u00e3o UV e a forma\u00e7\u00e3o de radicais livres ou c\u00e1tions, desencadeando a polimeriza\u00e7\u00e3o de mon\u00f4meros e olig\u00f4meros, rea\u00e7\u00f5es de reticula\u00e7\u00e3o e enxerto, em um per\u00edodo de tempo muito curto para transformar a tinta curada em uma estrutura de malha tridimensional de pol\u00edmeros.<\/p>\n<p>Outros nomes: 2-metil-1-(4-metiltiofenil)-2-morfolinil-1-propanona<br \/>\nN\u00ba CAS: <a href=\"https:\/\/changhongchemical.com\/product\/photoinitiator-907-cas-71868-10-5\/\">71868-10-5<\/a><br \/>\nApar\u00eancia: P\u00f3 cristalino branco<br \/>\nTransmit\u00e2ncia: 425nm\u226590,0%, 500nm\u226595,0% (1g\/10mL de tolueno)<br \/>\nPico de absor\u00e7\u00e3o: 230nm, 304nm (em solu\u00e7\u00e3o de metanol)<br \/>\nSolubilidade: 20\u2103 (g\/100g de solu\u00e7\u00e3o)<\/p>\n<p>V \u3001A tend\u00eancia de desenvolvimento dos fotoiniciadores Os fotoiniciadores, al\u00e9m de atender aos requisitos ambientais, como alguns padr\u00f5es (como revestimentos de grau aliment\u00edcio), t\u00eam limites r\u00edgidos para o res\u00edduo de fotoiniciadores, em termos de desempenho, precisam ter um alto coeficiente de extin\u00e7\u00e3o molar, baixa toxicidade, boa solubilidade e outras caracter\u00edsticas, al\u00e9m de correspond\u00eancia espectral com a fonte de luz.<br \/>\nCom o aumento da conscientiza\u00e7\u00e3o sobre a seguran\u00e7a p\u00fablica, a seguran\u00e7a das embalagens de alimentos e medicamentos \u00e9 cada vez mais importante, e a Europa desenvolveu tintas rigorosas para embalagens de alimentos e medicamentos. Em todo o mundo, os fotoiniciadores de macromol\u00e9culas ser\u00e3o cada vez mais usados em tintas de embalagem devido \u00e0s suas vantagens de baixa toxicidade e baixa migra\u00e7\u00e3o, portanto, o desenvolvimento de mais tipos de fotoiniciadores de macromol\u00e9culas \u00e9 a tend\u00eancia de desenvolvimento dos produtos do setor.<br \/>\nOs produtos formulados que consistem em fotoiniciadores cati\u00f4nicos e resinas e mon\u00f4meros de suporte t\u00eam as vantagens do bloqueio da antioxida\u00e7\u00e3o e da polimeriza\u00e7\u00e3o e do baixo encolhimento do sistema, o que pode complementar o sistema de cura por radicais livres. A aplica\u00e7\u00e3o futura de produtos de cura cati\u00f4nica ou o uso misto com produtos de cura de radicais livres t\u00eam perspectivas de desenvolvimento, portanto o fotoiniciador cati\u00f4nico tamb\u00e9m \u00e9 uma das dire\u00e7\u00f5es de desenvolvimento de produto e tecnologia.<\/p>\n<h2><strong><b>Entre em contato conosco agora!<\/b><\/strong><\/h2>\n<h4><strong><b>Se precisar do Price, preencha suas informa\u00e7\u00f5es de contato no formul\u00e1rio abaixo. Normalmente, entraremos em contato dentro de 24 horas. Voc\u00ea tamb\u00e9m pode me enviar um e-mail\u00a0<span style=\"color: #00ccff;\"><a style=\"color: #00ccff;\" href=\"mailto:info@changhongchemical.com\">info@changhongchemical.com<\/a>\u00a0<\/span>durante o hor\u00e1rio comercial (das 8h30 \u00e0s 18h UTC+8 de segunda a s\u00e1bado) ou use o bate-papo ao vivo do site para obter uma resposta imediata.<\/b><\/strong><\/h4>","protected":false},"excerpt":{"rendered":"<p>Coating industry: I\u3001Terms and definitions photoinitiator (photoinitiator), according to GB\/T 41764-2022 \u2018Determination of the content of photoinitiators in radiation-curing coatings Gas Chromatography-Mass Spectrometry Method\u2019 in 3.1 described as: a substance that can absorb radiant&#8230;<\/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-8558","post","type-post","status-publish","format-standard","hentry","category-photoinitiator"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - 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