{"id":164,"date":"2018-12-29T21:11:49","date_gmt":"2018-12-30T05:11:49","guid":{"rendered":"https:\/\/phoseon.com\/?page_id=164"},"modified":"2022-11-23T10:52:15","modified_gmt":"2022-11-23T18:52:15","slug":"led-uv-wavelength","status":"publish","type":"page","link":"https:\/\/phoseon.com\/pt\/industrial-curing\/technology\/led-uv-wavelength\/","title":{"rendered":"Comprimento de onda LED UV"},"content":{"rendered":"<p><\/p>\n\n\n\n<h2 class=\"has-text-align-center wp-block-heading\">Distribui\u00e7\u00e3o Espectral UV vs. Merc\u00fario&nbsp;<\/h2>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/phoseon.com\/wp-content\/uploads\/2020\/12\/Wavelength_2014-Final-1024x453.jpg\" alt=\"\" class=\"wp-image-19235\" width=\"1024\" height=\"453\" srcset=\"https:\/\/phoseon.com\/wp-content\/uploads\/2020\/12\/Wavelength_2014-Final-1024x453.jpg 1024w, https:\/\/phoseon.com\/wp-content\/uploads\/2020\/12\/Wavelength_2014-Final-300x133.jpg 300w, https:\/\/phoseon.com\/wp-content\/uploads\/2020\/12\/Wavelength_2014-Final-768x340.jpg 768w, https:\/\/phoseon.com\/wp-content\/uploads\/2020\/12\/Wavelength_2014-Final-1536x679.jpg 1536w, https:\/\/phoseon.com\/wp-content\/uploads\/2020\/12\/Wavelength_2014-Final-16x7.jpg 16w, https:\/\/phoseon.com\/wp-content\/uploads\/2020\/12\/Wavelength_2014-Final-640x283.jpg 640w, https:\/\/phoseon.com\/wp-content\/uploads\/2020\/12\/Wavelength_2014-Final-1200x531.jpg 1200w, https:\/\/phoseon.com\/wp-content\/uploads\/2020\/12\/Wavelength_2014-Final.jpg 1617w\" sizes=\"(max-width: 639px) 98vw, (max-width: 1199px) 64vw, 770px\" \/><\/figure><\/div>\n\n\n<p>O Sol \u00e9 uma fonte de todo o espectro da radia\u00e7\u00e3o ultravioleta, que geralmente \u00e9 subdividida em UV-A, UV-B, e UV-C. O espectro t\u00edpico do espectro da fonte de luz varia de Luz Ultravioleta (UV-C: 200 a 280nm; UV-B: 280 a 315nm; UV-A: 315 a 400nm) a Luz Vis\u00edvel (400 a 760nm) e Luz Infravermelha (760 a 3000nm). As luzes UV LED t\u00eam uma sa\u00edda espectral estreita centrada em torno de um comprimento de onda espec\u00edfico, \u00b110nm. A maioria dos produtos Phoseon usa comprimentos de onda de 365nm, 385nm, 395nm ou 405nm. Esta distribui\u00e7\u00e3o quase monocrom\u00e1tica (ver quadro) requer novas formula\u00e7\u00f5es qu\u00edmicas para garantir a cura adequada de tintas, revestimentos e adesivos. <\/p>\n\n\n\n<p>A maioria da cura UV padr\u00e3o acontece em uma faixa estreita de emiss\u00e3o, com o restante da sa\u00edda espectral gerando emiss\u00f5es UV-C e infravermelho desnecess\u00e1rias e potencialmente prejudiciais. As luzes UV LED proporcionam esta estreita faixa de emiss\u00e3o.<\/p>\n\n\n\n<p><a href=\"https:\/\/phoseon.com\/pt\/industrial-curing\/products\/uv-curing-systems\/\">Fontes de luz de cura UV LED<\/a>&nbsp;converter eficientemente 20-40% da energia el\u00e9trica de entrada em luz UV utiliz\u00e1vel, sem exposi\u00e7\u00e3o nociva UV-C ou infravermelho. Essa efici\u00eancia se traduz em aproximadamente 80% de economia de energia e calor em rela\u00e7\u00e3o \u00e0s l\u00e2mpadas \u00e0 base de merc\u00fario.<\/p>\n\n\n\n<hr class=\"wp-block-separator is-style-wide\"\/>\n\n\n\n<h2 class=\"has-text-align-center wp-block-heading\">Pico de Irradi\u00e2ncia e Densidade Energ\u00e9tica<\/h2>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"alignleft\"><img loading=\"lazy\" decoding=\"async\" width=\"374\" height=\"215\" src=\"https:\/\/phoseon.com\/wp-content\/uploads\/2019\/01\/Power-vs-irradiance.jpg\" alt=\"Power-vs-irradiance\" class=\"wp-image-2626\" srcset=\"https:\/\/phoseon.com\/wp-content\/uploads\/2019\/01\/Power-vs-irradiance.jpg 374w, https:\/\/phoseon.com\/wp-content\/uploads\/2019\/01\/Power-vs-irradiance-300x172.jpg 300w\" sizes=\"(max-width: 639px) 98vw, (max-width: 1199px) 64vw, 374px\" \/><\/figure><\/div>\n\n\n<p>H\u00e1 dois par\u00e2metros-chave de uma l\u00e2mpada LED que devem ser entendidos com a finalidade de otimizar a cura e estabelecer uma janela de processo. A identifica\u00e7\u00e3o desta janela de processo resultar\u00e1 no acabamento mais dur\u00e1vel e desej\u00e1vel, bem como na ades\u00e3o aceit\u00e1vel e cura superficial: irradi\u00e2ncia de pico e densidade de energia.<\/p>\n\n\n\n<p>A irradia\u00e7\u00e3o de pico, tamb\u00e9m chamada de intensidade, \u00e9 a pot\u00eancia radiante que chega a uma \u00e1rea superficial por unidade. Com a cura UV, a superf\u00edcie \u00e9 a superf\u00edcie de cura do substrato ou parte, e um cent\u00edmetro quadrado \u00e9 a \u00e1rea da unidade. Irradi\u00e2ncia \u00e9 expressa em unidades de watts ou milliwatts por cent\u00edmetro quadrado (W\/cm\u00b2 ou mW\/cm\u00b2). A irradi\u00e2ncia de pico \u00e9 instrumental na penetra\u00e7\u00e3o e ajuda na cura superficial. A irradi\u00e2ncia de pico \u00e9 afetada pela sa\u00edda da fonte de luz projetada, pelo uso de refletores ou \u00f3tica para concentrar ou conter os raios em uma \u00e1rea de impacto superficial mais apertada, e pela dist\u00e2ncia da fonte da superf\u00edcie de cura. A irradi\u00e2ncia dos LEDs UV na superf\u00edcie de cura diminui rapidamente conforme aumenta a dist\u00e2ncia entre a fonte e a superf\u00edcie de cura.<\/p>\n\n\n\n<p>A densidade de energia, tamb\u00e9m chamada dose ou densidade de energia radiante, \u00e9 a energia que chega a uma superf\u00edcie por unidade durante um per\u00edodo de tempo definido (perman\u00eancia ou exposi\u00e7\u00e3o). Um cent\u00edmetro quadrado \u00e9 novamente a \u00e1rea unit\u00e1ria e a densidade de energia radiante \u00e9 expressa em unidades de joules ou millijoules por cent\u00edmetro quadrado (J\/cm\u00b2 ou mJ\/cm\u00b2 ). A densidade de energia \u00e9 a integral da irradia\u00e7\u00e3o ao longo do tempo. Uma quantidade suficiente de densidade de energia \u00e9 necess\u00e1ria para a cura completa.<\/p>\n\n\n\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link has-background\" href=\"https:\/\/phoseon.com\/wp-content\/uploads\/2019\/03\/Phoseon-White-Paper_April-2018_Power-vs-Irradiance.pdf\" style=\"background-color:#633799\">Download do Livro Branco Pico de Irradi\u00e2ncia e Densidade Energ\u00e9tica<\/a><\/div>\n\n\n\n<hr class=\"wp-block-separator is-style-wide\"\/>","protected":false},"excerpt":{"rendered":"<p>Distribui\u00e7\u00e3o Espectral UV vs. Merc\u00fario O Sol \u00e9 uma fonte do espectro completo da radia\u00e7\u00e3o ultravioleta, que \u00e9 [...]<\/p>","protected":false},"author":2,"featured_media":0,"parent":160,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>LED UV Wavelength - 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