{"id":2560,"date":"2023-03-29T09:32:21","date_gmt":"2023-03-29T01:32:21","guid":{"rendered":"https:\/\/ots.seowaimao.com\/?p=2560"},"modified":"2023-03-29T09:32:21","modified_gmt":"2023-03-29T01:32:21","slug":"influence-du-test-de-vieillissement-uv-sur-lepaisseur-du-revetement-de-la-feuille-enduite-de-couleur","status":"publish","type":"post","link":"https:\/\/ots-testequipment.net\/fr\/blog\/influence-of-uv-aging-test-on-coating-thickness-of-color-coated-sheet\/","title":{"rendered":"Influence du test de vieillissement UV sur l&#039;\u00e9paisseur du rev\u00eatement de la feuille enduite de couleur"},"content":{"rendered":"<p>Des panneaux \u00e0 rev\u00eatement color\u00e9 avec des types de peinture PESMPHDP et PVDF ont \u00e9t\u00e9 soumis \u00e0 un test de r\u00e9sistance au vieillissement acc\u00e9l\u00e9r\u00e9 pour \u00e9tudier l&#039;effet du temps de photo-vieillissement sur l&#039;\u00e9paisseur des panneaux \u00e0 rev\u00eatement color\u00e9, analyser le degr\u00e9 d&#039;influence et explorer les raisons de ce ph\u00e9nom\u00e8ne. impact. Il ressort des r\u00e9sultats des tests que la perte d&#039;\u00e9paisseur du rev\u00eatement des panneaux color\u00e9s augmente avec l&#039;augmentation du temps de vieillissement UV\u00a0; les panneaux color\u00e9s de diff\u00e9rents types de rev\u00eatement ont diff\u00e9rents degr\u00e9s d&#039;influence. Selon la perte d&#039;\u00e9paisseur de rev\u00eatement des panneaux enduits de couleur, l&#039;ordre est PE et SMP&gt;HDP&gt;PVDE\u00a0; Lors du test de vieillissement aux ultraviolets, la perte d&#039;\u00e9paisseur du rev\u00eatement du panneau color\u00e9 est \u00e9galement affect\u00e9e par sa couleur.<\/p>\n<p><img decoding=\"async\" class=\"aligncenter wp-image-2166 size-full\" src=\"https:\/\/ots-testequipment.net\/wp-content\/uploads\/2022\/07\/%E5%BE%AE%E4%BF%A1%E5%9B%BE%E7%89%87_20220719171307.png\" sizes=\"(max-width: 475px) 100vw, 475px\" srcset=\"https:\/\/ots-testequipment.net\/wp-content\/uploads\/2022\/07\/\u5fae\u4fe1\u56fe\u7247_20220719171307.png 475w, https:\/\/ots-testequipment.net\/wp-content\/uploads\/2022\/07\/\u5fae\u4fe1\u56fe\u7247_20220719171307-300x157.png 300w, https:\/\/ots-testequipment.net\/wp-content\/uploads\/2022\/07\/\u5fae\u4fe1\u56fe\u7247_20220719171307-320x167.png 320w\" alt=\"\" width=\"475\" height=\"248\" \/><\/p>\n<p>L&#039;\u00e9paisseur du rev\u00eatement des panneaux color\u00e9s est un indicateur tr\u00e8s important lors de l&#039;inspection des panneaux color\u00e9s. Cela affecte directement les performances des panneaux enduits de couleur, telles que les performances de traitement, la r\u00e9sistance au vieillissement et la r\u00e9sistance \u00e0 la corrosion. Il existe de nombreux rapports sur ce probl\u00e8me au pays et \u00e0 l&#039;\u00e9tranger, mais il existe peu de rapports sur l&#039;influence du processus de vieillissement du rev\u00eatement sur l&#039;\u00e9paisseur de la plaque color\u00e9e. Dans le processus d&#039;utilisation r\u00e9el des panneaux architecturaux \u00e0 rev\u00eatement color\u00e9, sous le soleil et la pluie, si l&#039;\u00e9paisseur du rev\u00eatement change avec le temps et quels changements se produiront dans quelle mesure, la discussion sur cette question a une certaine signification pratique.<\/p>\n<p>&nbsp;<\/p>\n<p>Les principales causes du vieillissement des rev\u00eatements font g\u00e9n\u00e9ralement r\u00e9f\u00e9rence au rayonnement solaire, \u00e0 la temp\u00e9rature ambiante et \u00e0 l&#039;humidit\u00e9 de l&#039;environnement, et les causes secondaires sont la pollution de l&#039;air, les pluies acides, les ph\u00e9nom\u00e8nes biologiques, le vent et le sable, etc. Il existe de nombreux types et manifestations de vieillissement des rev\u00eatements, principalement le d\u00e9gradation des cha\u00eenes polym\u00e8res, y compris la photod\u00e9gradation, la d\u00e9gradation oxydative et la d\u00e9gradation thermique. La principale m\u00e9thode de vieillissement des panneaux color\u00e9s utilis\u00e9s dans des environnements \u00e0 temp\u00e9rature normale devrait \u00eatre la d\u00e9gradation photo-oxydante.<\/p>\n<p>La lumi\u00e8re du soleil peut g\u00e9n\u00e9ralement \u00eatre divis\u00e9e en 3 plages de longueurs d&#039;onde principales : ultraviolet (longueur d&#039;onde 200 ~ 400 nm), lumi\u00e8re visible (longueur d&#039;onde 400 ~ 720 nm) et infrarouge (720 ~ 2 500 nm). Parmi eux, les rayons ultraviolets peuvent \u00eatre subdivis\u00e9s en UV \u00e0 ondes courtes (200-290 nm), UVB \u00e0 ondes moyennes (290-320 nm) et UVA \u00e0 ondes longues (320-400 nm) selon la longueur de la longueur d&#039;onde. Une fois que la lumi\u00e8re du soleil a travers\u00e9 l&#039;espace et l&#039;atmosph\u00e8re \u00e0 haute altitude, toute la lumi\u00e8re ultraviolette inf\u00e9rieure \u00e0 la longueur d&#039;onde de 290 nm est presque filtr\u00e9e, de sorte que les rayons ultraviolets qui atteignent le sol ne sont en r\u00e9alit\u00e9 que des UVB \u00e0 ondes moyennes et des UVA \u00e0 ondes longues. Les UVB \u00e0 ondes moyennes endommagent davantage le rev\u00eatement du panneau color\u00e9 que les UVA \u00e0 ondes longues.<\/p>\n<p>&nbsp;<\/p>\n<p>La m\u00e9thode de test de vieillissement ultraviolet acc\u00e9l\u00e9r\u00e9 utilis\u00e9e dans cet article est conforme \u00e0 la m\u00e9thode de test de vieillissement ultraviolet dans GB\/T13448-2006 \u00ab M\u00e9thode de test de t\u00f4le d&#039;acier et de bande d&#039;acier rev\u00eatues de couleur \u00bb, les conditions de test sp\u00e9cifiques sont \u00ab 8h est un cycle\u00a0: 4h d&#039;ultraviolet lumi\u00e8re, temp\u00e9rature du tableau noir (60 \u00b1 3) \u2103 condensation 4 h, temp\u00e9rature du tableau noir (50 + 3) C \u00bb, la longueur d&#039;onde est de 310 nm, l&#039;intensit\u00e9 lumineuse est de 0,63 W\/(m2\u00b7nm). Les conditions de test incluent trois facteurs majeurs qui affectent le vieillissement des rev\u00eatements de panneaux architecturaux \u00e0 rev\u00eatement color\u00e9, \u00e0 savoir la lumi\u00e8re, l&#039;humidit\u00e9 et la temp\u00e9rature. Les \u00e9chantillons ont utilis\u00e9 quatre types diff\u00e9rents de panneaux enduits de couleur\u00a0: polyester ordinaire (PE), polyester modifi\u00e9 au silicium (SMP), polyester haute r\u00e9sistance aux intemp\u00e9ries (HDP) et fluorure de polyvinylid\u00e8ne (PVDF), 3 pi\u00e8ces chacun, pour un total de 12 pi\u00e8ces. : La couleur des 3 plaques color\u00e9es de chaque type est diff\u00e9rente. Parmi les quatre types de plaques recouvertes de couleur, les \u00e9chantillons 1, 5, 7 et 11 sont des plaques recouvertes de couleur bleue et les \u00e9chantillons 2, 4, 9 et 10 sont des plaques blanches. Les \u00e9chantillons 3, 6 et 812 sont des panneaux rev\u00eatus de couleur grise. Un test de vieillissement acc\u00e9l\u00e9r\u00e9 est effectu\u00e9 conform\u00e9ment \u00e0 la norme. Avant le test, utilisez un courant de Foucault pour tester l&#039;\u00e9paisseur du rev\u00eatement de la plaque color\u00e9e\u00a0: lorsque le temps de vieillissement acc\u00e9l\u00e9r\u00e9 est respectivement de 200, 400, 600, 1\u00a0000, 1\u00a0500, 2\u00a0000 et 3\u00a0000 h, utilisez le m\u00eame courant de Foucault, et puis dans les m\u00eames conditions d&#039;\u00e9talonnage. Testez respectivement l&#039;\u00e9paisseur du rev\u00eatement du panneau enduit de couleur. Lors du test de l&#039;\u00e9paisseur du rev\u00eatement du panneau enduit de couleur, le m\u00eame \u00e9chantillon a \u00e9t\u00e9 test\u00e9 12 fois et la valeur moyenne a \u00e9t\u00e9 prise comme r\u00e9sultat du test. La bo\u00eete de test de vieillissement UV UUV\/SPRAY produite par 0-ab aux \u00c9tats-Unis a \u00e9t\u00e9 utilis\u00e9e : l&#039;instrument de test d&#039;\u00e9paisseur de rev\u00eatement pour le panneau enduit de couleur \u00e9tait Le compteur \u00e0 courants de Foucault est produit par la soci\u00e9t\u00e9 de p\u00eache allemande.<\/p>\n<p>&nbsp;<\/p>\n<p>La perte d&#039;\u00e9paisseur de rev\u00eatement de 12 \u00e9chantillons \u00e0 diff\u00e9rents temps de test est indiqu\u00e9e dans le graphique \u00e0 barres. Parmi eux, la perte d&#039;\u00e9paisseur du rev\u00eatement sous une certaine dur\u00e9e de test UVB = \u00e9paisseur du rev\u00eatement avant l&#039;\u00e9paisseur du rev\u00eatement de test apr\u00e8s la dur\u00e9e du test UVB.<\/p>\n<p><img decoding=\"async\" class=\"aligncenter wp-image-2167 size-full\" src=\"https:\/\/ots-testequipment.net\/wp-content\/uploads\/2022\/07\/%E5%BE%AE%E4%BF%A1%E5%9B%BE%E7%89%87_20220719171322.png\" sizes=\"(max-width: 554px) 100vw, 554px\" srcset=\"https:\/\/ots-testequipment.net\/wp-content\/uploads\/2022\/07\/\u5fae\u4fe1\u56fe\u7247_20220719171322.png 554w, https:\/\/ots-testequipment.net\/wp-content\/uploads\/2022\/07\/\u5fae\u4fe1\u56fe\u7247_20220719171322-300x102.png 300w, https:\/\/ots-testequipment.net\/wp-content\/uploads\/2022\/07\/\u5fae\u4fe1\u56fe\u7247_20220719171322-320x109.png 320w, https:\/\/ots-testequipment.net\/wp-content\/uploads\/2022\/07\/\u5fae\u4fe1\u56fe\u7247_20220719171322-480x164.png 480w\" alt=\"\" width=\"554\" height=\"189\" \/><\/p>\n<p>Il ressort des r\u00e9sultats des tests que la perte d\u2019\u00e9paisseur de rev\u00eatement de la plaque color\u00e9e augmente avec l\u2019augmentation du temps de vieillissement UV. Cependant, les plaques color\u00e9es de diff\u00e9rents types de rev\u00eatement ont diff\u00e9rents degr\u00e9s d&#039;influence. Les feuilles \u00e0 rev\u00eatement color\u00e9 PE et SMP pr\u00e9sentent une perte importante d&#039;\u00e9paisseur de rev\u00eatement, les feuilles \u00e0 rev\u00eatement color\u00e9 HDP ont une petite perte d&#039;\u00e9paisseur de rev\u00eatement et les feuilles \u00e0 rev\u00eatement color\u00e9 PVDF ont une petite perte d&#039;\u00e9paisseur de rev\u00eatement. Le plus petit. Pour les panneaux enduits de couleur bleue et blanche PE, SMP, HDP et PVDF, la perte d&#039;\u00e9paisseur du rev\u00eatement est lin\u00e9airement positivement corr\u00e9l\u00e9e au temps de vieillissement acc\u00e9l\u00e9r\u00e9 de la lumi\u00e8re ultraviolette. Le coefficient de corr\u00e9lation :<\/p>\n<p>0,91, la corr\u00e9lation lin\u00e9aire est relativement forte et la pente de l&#039;\u00e9quation de r\u00e9gression pour le panneau recouvert de couleur blanche est plus petite que celle du panneau recouvert de couleur bleue. Lors de l&#039;utilisation de panneaux enduits de couleur, l&#039;\u00e9paisseur du rev\u00eatement diminue progressivement avec le temps et les performances de protection se d\u00e9t\u00e9riorent progressivement. Il est recommand\u00e9 aux utilisateurs de panneaux enduits de couleur de choisir des panneaux enduits de couleur avec des couleurs et des types de peinture appropri\u00e9s en fonction de leur objectif et de leur environnement d&#039;utilisation.<\/p>","protected":false},"excerpt":{"rendered":"<p>Des panneaux \u00e0 rev\u00eatement color\u00e9 avec des types de peinture PESMPHDP et PVDF ont \u00e9t\u00e9 soumis \u00e0 un test de r\u00e9sistance au vieillissement acc\u00e9l\u00e9r\u00e9 pour \u00e9tudier l&#039;effet du temps de photo-vieillissement sur l&#039;\u00e9paisseur des panneaux \u00e0 rev\u00eatement color\u00e9, analyser le degr\u00e9 d&#039;influence et explorer les raisons de ce ph\u00e9nom\u00e8ne. impact. Il ressort des r\u00e9sultats des tests que l\u2019\u00e9paisseur du rev\u00eatement\u2026<\/p>","protected":false},"author":15,"featured_media":2561,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-2560","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Influence of UV Aging Test on Coating Thickness of Color Coated Sheet - OTS TECHNIK<\/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:\/\/ots-testequipment.net\/fr\/blog\/influence-du-test-de-vieillissement-uv-sur-lepaisseur-du-revetement-de-la-feuille-enduite-de-couleur\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Influence of UV Aging Test on Coating Thickness of Color Coated Sheet - OTS TECHNIK\" \/>\n<meta property=\"og:description\" content=\"Color-coated panels with paint types of PESMPHDP and PVDF were subjected to an accelerated aging resistance test to investigate the effect of photo-aging time on the thickness of the color-coated panels, analyze the degree of influence, and explore the reasons for the impact. 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