{"id":5572,"date":"2026-10-19T06:26:17","date_gmt":"2026-10-19T06:26:17","guid":{"rendered":"https:\/\/roadskymarking.com\/?p=5572"},"modified":"2026-10-19T06:26:18","modified_gmt":"2026-10-19T06:26:18","slug":"why-does-white-thermoplastic-road-marking-paint-turn-yellow","status":"publish","type":"post","link":"https:\/\/roadskymarking.com\/fr\/why-does-white-thermoplastic-road-marking-paint-turn-yellow.html","title":{"rendered":"Pourquoi la peinture thermoplastique blanche utilis\u00e9e pour le marquage routier jaunit-elle ?"},"content":{"rendered":"<p>Blanc <strong><a href=\"https:\/\/roadskymarking.com\/fr\/thermoplastic-road-marking-paint.html\" data-type=\"link\" data-id=\"https:\/\/roadskymarking.com\/thermoplastic-road-marking-paint.html\" target=\"_blank\" rel=\"noreferrer noopener\" style=\"text-decoration: underline;\">peinture de marquage routier thermoplastique<\/a><\/strong> Il est largement utilis\u00e9 pour les lignes m\u00e9dianes, les s\u00e9parateurs de voies, les passages pi\u00e9tons, les lignes d'arr\u00eat et autres marquages routiers. Sa couleur blanche \u00e9clatante offre un fort contraste visuel avec la chauss\u00e9e, ce qui aide les conducteurs \u00e0 rep\u00e9rer les limites des voies et les consignes de circulation.<\/p>\n\n\n\n<p>Cependant, un probl\u00e8me courant rencontr\u00e9 lors de <strong><a href=\"https:\/\/roadskymarking.com\/fr\/cases\" data-type=\"link\" data-id=\"https:\/\/roadskymarking.com\/cases\" target=\"_blank\" rel=\"noreferrer noopener\" style=\"text-decoration: underline;\">projets de marquage routier<\/a><\/strong> Est-ce du thermoplastique blanc ? <strong><a href=\"https:\/\/roadskymarking.com\/fr\/road-marking-paint\" data-type=\"link\" data-id=\"https:\/\/roadskymarking.com\/road-marking-paint\" target=\"_blank\" rel=\"noreferrer noopener\" style=\"text-decoration: underline;\">peinture de marquage routier<\/a><\/strong> jaunit apr\u00e8s application. Cette d\u00e9coloration peut nuire \u00e0 l'aspect des marquages routiers, r\u00e9duire leur contraste visuel et susciter des inqui\u00e9tudes quant \u00e0 la qualit\u00e9 des mat\u00e9riaux et aux performances de l'ouvrage.<\/p>\n\n\n\n<p><strong>Pourquoi la peinture thermoplastique blanche utilis\u00e9e pour le marquage routier jaunit-elle ?<\/strong> Parmi les causes les plus courantes, on peut citer un \u00e9chauffement excessif lors de la mise en \u0153uvre, l'oxydation ou la d\u00e9gradation du liant, la migration du bitume provenant de la chauss\u00e9e en asphalte, la contamination et l'utilisation de mati\u00e8res premi\u00e8res de mauvaise qualit\u00e9. Il est essentiel d'identifier la cause r\u00e9elle afin de choisir les mesures correctives appropri\u00e9es et d'\u00e9viter toute d\u00e9coloration dans les futurs projets.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"400\" src=\"https:\/\/roadskymarking.com\/wp-content\/uploads\/2026\/10\/What-Causes-White-Thermoplastic-Road-Marking-Paint-to-Turn-Yellow.jpg\" alt=\"Quelles sont les causes du jaunissement de la peinture thermoplastique blanche utilis\u00e9e pour le marquage routier ?\" class=\"wp-image-5573\" srcset=\"https:\/\/roadskymarking.com\/wp-content\/uploads\/2026\/10\/What-Causes-White-Thermoplastic-Road-Marking-Paint-to-Turn-Yellow.jpg 600w, https:\/\/roadskymarking.com\/wp-content\/uploads\/2026\/10\/What-Causes-White-Thermoplastic-Road-Marking-Paint-to-Turn-Yellow-400x267.jpg 400w, https:\/\/roadskymarking.com\/wp-content\/uploads\/2026\/10\/What-Causes-White-Thermoplastic-Road-Marking-Paint-to-Turn-Yellow-18x12.jpg 18w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/figure><\/div>\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_89 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table des mati\u00e8res<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table des mati\u00e8res\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewbox=\"0 0 24 24\" version=\"1.2\" baseprofile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/roadskymarking.com\/fr\/why-does-white-thermoplastic-road-marking-paint-turn-yellow.html\/#What_Causes_White_Thermoplastic_Road_Marking_Paint_to_Turn_Yellow\" >Qu'est-ce qui provoque le jaunissement de la peinture thermoplastique blanche utilis\u00e9e pour le marquage routier ?<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/roadskymarking.com\/fr\/why-does-white-thermoplastic-road-marking-paint-turn-yellow.html\/#1_Excessive_Heating_During_Application\" >1. \u00c9chauffement excessif pendant l'application<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/roadskymarking.com\/fr\/why-does-white-thermoplastic-road-marking-paint-turn-yellow.html\/#2_Bitumen_Migration_From_Asphalt_Pavement\" >2. Migration du bitume \u00e0 partir des chauss\u00e9es en asphalte<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/roadskymarking.com\/fr\/why-does-white-thermoplastic-road-marking-paint-turn-yellow.html\/#3_Oxidation_and_Binder_Degradation\" >3. Oxydation et d\u00e9gradation du liant<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/roadskymarking.com\/fr\/why-does-white-thermoplastic-road-marking-paint-turn-yellow.html\/#4_Poor-Quality_Raw_Materials\" >4. Mati\u00e8res premi\u00e8res de mauvaise qualit\u00e9<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/roadskymarking.com\/fr\/why-does-white-thermoplastic-road-marking-paint-turn-yellow.html\/#5_Contamination_During_Melting_or_Application\" >5. Contamination lors de la fusion ou de l'application<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/roadskymarking.com\/fr\/why-does-white-thermoplastic-road-marking-paint-turn-yellow.html\/#6_Unsuitable_Application_Conditions\" >6. Conditions d'utilisation inappropri\u00e9es<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/roadskymarking.com\/fr\/why-does-white-thermoplastic-road-marking-paint-turn-yellow.html\/#How_to_Identify_the_Cause_of_Yellowing\" >Comment identifier la cause du jaunissement<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/roadskymarking.com\/fr\/why-does-white-thermoplastic-road-marking-paint-turn-yellow.html\/#How_to_Prevent_White_Thermoplastic_Road_Marking_Paint_From_Turning_Yellow\" >Comment \u00e9viter que la peinture thermoplastique blanche utilis\u00e9e pour le marquage routier ne jaunisse<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/roadskymarking.com\/fr\/why-does-white-thermoplastic-road-marking-paint-turn-yellow.html\/#1_Select_High-Quality_Thermoplastic_Road_Marking_Material\" >1. Choisir un mat\u00e9riau thermoplastique de haute qualit\u00e9 pour le marquage routier<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/roadskymarking.com\/fr\/why-does-white-thermoplastic-road-marking-paint-turn-yellow.html\/#2_Control_Melting_Temperature_and_Heating_Time\" >2. Contr\u00f4le de la temp\u00e9rature de fusion et de la dur\u00e9e de chauffage<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/roadskymarking.com\/fr\/why-does-white-thermoplastic-road-marking-paint-turn-yellow.html\/#3_Prepare_the_Pavement_Properly\" >3. Pr\u00e9parer correctement la chauss\u00e9e<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/roadskymarking.com\/fr\/why-does-white-thermoplastic-road-marking-paint-turn-yellow.html\/#4_Maintain_Clean_Application_Equipment\" >4. Veiller \u00e0 la propret\u00e9 du mat\u00e9riel d'application<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/roadskymarking.com\/fr\/why-does-white-thermoplastic-road-marking-paint-turn-yellow.html\/#5_Conduct_Quality_Checks_Before_and_After_Application\" >5. Effectuer des contr\u00f4les de qualit\u00e9 avant et apr\u00e8s l'application<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/roadskymarking.com\/fr\/why-does-white-thermoplastic-road-marking-paint-turn-yellow.html\/#What_Should_You_Do_if_White_Thermoplastic_Road_Marking_Paint_Has_Already_Turned_Yellow\" >Que faire si la peinture thermoplastique blanche utilis\u00e9e pour le marquage routier a d\u00e9j\u00e0 jauni ?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/roadskymarking.com\/fr\/why-does-white-thermoplastic-road-marking-paint-turn-yellow.html\/#Conclusion\" >Conclusion<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_Causes_White_Thermoplastic_Road_Marking_Paint_to_Turn_Yellow\"><\/span>Qu'est-ce qui provoque le jaunissement de la peinture thermoplastique blanche utilis\u00e9e pour le marquage routier ?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>La peinture thermoplastique blanche pour le marquage routier est un mat\u00e9riau appliqu\u00e9 \u00e0 chaud, g\u00e9n\u00e9ralement compos\u00e9 de mati\u00e8res synth\u00e9tiques <strong><a href=\"https:\/\/roadskymarking.com\/fr\/petroleum-resin.html\" data-type=\"link\" data-id=\"https:\/\/roadskymarking.com\/petroleum-resin.html\" target=\"_blank\" rel=\"noreferrer noopener\" style=\"text-decoration: underline;\">r\u00e9sine<\/a><\/strong>, pigments, charges, <strong><a href=\"https:\/\/roadskymarking.com\/fr\/glass-beads.html\" data-type=\"link\" data-id=\"https:\/\/roadskymarking.com\/glass-beads.html\" target=\"_blank\" rel=\"noreferrer noopener\" style=\"text-decoration: underline;\">perles de verre<\/a><\/strong>, ainsi que d'autres additifs. La stabilit\u00e9 de sa couleur d\u00e9pend de la qualit\u00e9 de ces ingr\u00e9dients, du processus de chauffage et de l'\u00e9tat de la chauss\u00e9e.<\/p>\n\n\n\n<p>Voici les principales raisons pour lesquelles le thermoplastique blanc <strong><a href=\"https:\/\/roadskymarking.com\/fr\/road-marking-material\" data-type=\"link\" data-id=\"https:\/\/roadskymarking.com\/road-marking-material\" target=\"_blank\" rel=\"noreferrer noopener\" style=\"text-decoration: underline;\">mat\u00e9riel de marquage routier<\/a><\/strong> peut jaunir.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"1_Excessive_Heating_During_Application\"><\/span>1. \u00c9chauffement excessif pendant l'application<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Une chaleur excessive est l'une des causes les plus courantes du jaunissement de la peinture thermoplastique blanche utilis\u00e9e pour le marquage routier.<\/p>\n\n\n\n<p>Avant son application, le mat\u00e9riau thermoplastique destin\u00e9 au marquage routier doit \u00eatre chauff\u00e9 jusqu\u2019\u00e0 ce qu\u2019il atteigne la temp\u00e9rature d\u2019application sp\u00e9cifi\u00e9e. Si le mat\u00e9riau est chauff\u00e9 au-del\u00e0 de la plage recommand\u00e9e par le fabricant ou s\u2019il reste \u00e0 une temp\u00e9rature \u00e9lev\u00e9e pendant trop longtemps, certains de ses composants risquent de subir une d\u00e9gradation thermique.<\/p>\n\n\n\n<p>Ce processus peut entra\u00eener l'apparition d'une teinte jaun\u00e2tre ou brun\u00e2tre sur le mat\u00e9riau blanc. Des chauffages et r\u00e9chauffages r\u00e9p\u00e9t\u00e9s peuvent accro\u00eetre ce risque, en particulier lorsque le mat\u00e9riau reste dans le <strong><a href=\"https:\/\/roadskymarking.com\/fr\/thermoplastic-preheater\" data-type=\"link\" data-id=\"https:\/\/roadskymarking.com\/thermoplastic-preheater\" target=\"_blank\" rel=\"noreferrer noopener\" style=\"text-decoration: underline;\">chaudi\u00e8re de fusion<\/a><\/strong> pendant de longues p\u00e9riodes.<\/p>\n\n\n\n<p>Plusieurs facteurs peuvent contribuer \u00e0 une surchauffe :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>R\u00e9glage d'une temp\u00e9rature de chauffage trop \u00e9lev\u00e9e.<\/li>\n\n\n\n<li>Laisser la mati\u00e8re fondue trop longtemps dans la cuve.<\/li>\n\n\n\n<li>R\u00e9chauffer \u00e0 plusieurs reprises les mati\u00e8res non utilis\u00e9es.<\/li>\n\n\n\n<li>Un chauffage in\u00e9gal qui entra\u00eene l'apparition de points chauds localis\u00e9s.<\/li>\n\n\n\n<li>Utilisation d'\u00e9quipements dont les dispositifs de r\u00e9gulation de la temp\u00e9rature sont impr\u00e9cis.<\/li>\n<\/ul>\n\n\n\n<p><strong>Comment l'\u00e9viter<\/strong>: Respectez les temp\u00e9ratures de chauffage et d'application recommand\u00e9es par le fabricant. Surveillez la temp\u00e9rature r\u00e9elle du mat\u00e9riau plut\u00f4t que de vous fier uniquement au r\u00e9glage de temp\u00e9rature de l'\u00e9quipement. \u00c9vitez tout chauffage prolong\u00e9 et tout r\u00e9chauffage inutile, et veillez \u00e0 ce que l'\u00e9quipement de fusion r\u00e9partisse la chaleur de mani\u00e8re homog\u00e8ne.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"2_Bitumen_Migration_From_Asphalt_Pavement\"><\/span>2. Migration du bitume \u00e0 partir des chauss\u00e9es en asphalte<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>La migration du bitume est une autre cause possible de d\u00e9coloration jaune ou brune, en particulier lorsque des marquages routiers thermoplastiques blancs sont appliqu\u00e9s sur une chauss\u00e9e en asphalte nouvellement construite.<\/p>\n\n\n\n<p>L'asphalte contient du bitume, un liant fonc\u00e9 d\u00e9riv\u00e9 du p\u00e9trole. Dans certaines conditions, les compos\u00e9s bitumineux peuvent remonter \u00e0 la surface et alt\u00e9rer l'aspect des marquages routiers blancs.<\/p>\n\n\n\n<p>Ce probl\u00e8me peut \u00eatre plus perceptible lorsque :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Le rev\u00eatement en asphalte est relativement r\u00e9cent.<\/li>\n\n\n\n<li>La chauss\u00e9e est expos\u00e9e \u00e0 des temp\u00e9ratures \u00e9lev\u00e9es.<\/li>\n\n\n\n<li>L'enrob\u00e9 bitumineux contient une forte proportion de liant.<\/li>\n\n\n\n<li>La surface de la chauss\u00e9e n'a pas \u00e9t\u00e9 correctement pr\u00e9par\u00e9e.<\/li>\n\n\n\n<li>Le produit de marquage n'est pas adapt\u00e9 au support ou aux conditions du chantier.<\/li>\n<\/ul>\n\n\n\n<p>La d\u00e9coloration due \u00e0 la migration du bitume peut se manifester sous forme de taches jaunes, brunes ou grises. Contrairement au jaunissement provoqu\u00e9 par une surchauffe dans la cuve de fusion, ce type de d\u00e9coloration est souvent li\u00e9 \u00e0 la zone de contact entre le mat\u00e9riau de marquage et l'asphalte.<\/p>\n\n\n\n<p><strong>Comment l'\u00e9viter<\/strong>: Inspectez la chauss\u00e9e avant d'appliquer les marquages thermoplastiques. En cas de risque de migration du bitume, envisagez un traitement d'\u00e9tanch\u00e9it\u00e9 ou d'isolation adapt\u00e9 et homologu\u00e9 par le fabricant, ou un autre syst\u00e8me de marquage compatible. Attendez que l'asphalte soit dans un \u00e9tat appropri\u00e9 avant l'application et respectez le cahier des charges du projet.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"3_Oxidation_and_Binder_Degradation\"><\/span>3. Oxydation et d\u00e9gradation du liant<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Les r\u00e9sines synth\u00e9tiques et autres composants organiques favorisent l'adh\u00e9rence de la peinture thermoplastique de marquage routier \u00e0 la chauss\u00e9e et permettent de pr\u00e9server ses propri\u00e9t\u00e9s physiques.<\/p>\n\n\n\n<p>Lorsque ces composants sont expos\u00e9s \u00e0 une chaleur excessive, \u00e0 l'oxyg\u00e8ne, \u00e0 la lumi\u00e8re du soleil et \u00e0 des contraintes environnementales prolong\u00e9es, des modifications chimiques peuvent se produire. En fonction de la formulation de la r\u00e9sine et des conditions d'exposition, ces modifications peuvent affecter la stabilit\u00e9 de la couleur du mat\u00e9riau.<\/p>\n\n\n\n<p>L'oxydation et la d\u00e9gradation thermique peuvent contribuer \u00e0 un jaunissement progressif, notamment lorsque le mat\u00e9riau a \u00e9t\u00e9 soumis \u00e0 une surchauffe lors de son application ou qu'il est compos\u00e9 d'un syst\u00e8me de liant inadapt\u00e9.<\/p>\n\n\n\n<p>Il est important de faire la distinction entre la d\u00e9coloration \u00e0 court terme due \u00e0 des temp\u00e9ratures de fusion trop \u00e9lev\u00e9es et les alt\u00e9rations \u00e0 plus long terme caus\u00e9es par l'exposition aux conditions environnementales. Ces deux ph\u00e9nom\u00e8nes peuvent se traduire par une coloration jaune, mais ils n\u00e9cessitent des analyses diff\u00e9rentes.<\/p>\n\n\n\n<p><strong>Comment l'\u00e9viter<\/strong>: Choisissez une peinture thermoplastique pour marquage routier adapt\u00e9e au climat et aux conditions d'application pr\u00e9vues. Stockez le produit conform\u00e9ment aux instructions du fournisseur, contr\u00f4lez la dur\u00e9e et la temp\u00e9rature de chauffage, et \u00e9valuez la stabilit\u00e9 de la couleur dans le cadre du contr\u00f4le qualit\u00e9 du produit.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"4_Poor-Quality_Raw_Materials\"><\/span>4. Mati\u00e8res premi\u00e8res de mauvaise qualit\u00e9<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>La qualit\u00e9 des mati\u00e8res premi\u00e8res a une influence directe sur la blancheur et l'aspect \u00e0 long terme de la peinture thermoplastique utilis\u00e9e pour le marquage routier.<\/p>\n\n\n\n<p><strong><a href=\"https:\/\/roadskymarking.com\/fr\/titanium-dioxide.html\" data-type=\"link\" data-id=\"https:\/\/roadskymarking.com\/titanium-dioxide.html\" target=\"_blank\" rel=\"noreferrer noopener\" style=\"text-decoration: underline;\">Dioxyde de titane<\/a><\/strong> est couramment utilis\u00e9 comme pigment blanc en raison de sa forte opacit\u00e9 et de sa blancheur. Les r\u00e9sines synth\u00e9tiques, les charges, les plastifiants et d'autres additifs influencent \u00e9galement la stabilit\u00e9 thermique et les performances chromatiques du produit final.<\/p>\n\n\n\n<p>Si la formulation contient des mati\u00e8res premi\u00e8res inadapt\u00e9es, des r\u00e9sines insuffisamment stables, des ingr\u00e9dients contamin\u00e9s ou un syst\u00e8me de pigments inad\u00e9quat, le marquage final risque de se d\u00e9colorer plus facilement sous l'effet de la chaleur ou des agressions environnementales.<\/p>\n\n\n\n<p>Cependant, le jaunissement ne suffit pas \u00e0 lui seul \u00e0 prouver qu'un produit est de mauvaise qualit\u00e9. M\u00eame un produit correctement formul\u00e9 peut se d\u00e9colorer s'il est soumis \u00e0 une chaleur excessive ou appliqu\u00e9 sur un support probl\u00e9matique.<\/p>\n\n\n\n<p><strong>Comment l'\u00e9viter<\/strong>: Achetez des mat\u00e9riaux thermoplastiques de marquage routier aupr\u00e8s de fabricants fiables. Demandez les fiches techniques, les fiches de donn\u00e9es de s\u00e9curit\u00e9 et les rapports d'essai correspondants, et v\u00e9rifiez que le produit est conforme aux normes de marquage routier applicables et aux exigences du projet.<\/p>\n\n\n\n<p>Pour les projets de construction routi\u00e8re de grande envergure, il est \u00e9galement conseill\u00e9 d'analyser des \u00e9chantillons avant de passer une commande en gros.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"5_Contamination_During_Melting_or_Application\"><\/span>5. Contamination lors de la fusion ou de l'application<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>La contamination peut \u00e9galement entra\u00eener l'apparition de taches jaunes, brunes ou grises sur la peinture thermoplastique blanche utilis\u00e9e pour le marquage routier.<\/p>\n\n\n\n<p>Parmi les sources courantes, on peut citer :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>R\u00e9sidus de mati\u00e8re thermoplastique jaune ou color\u00e9e dans la cuve de fusion.<\/li>\n\n\n\n<li>Pr\u00e9sence d'huile, de graisse ou d'autres contaminants dans l'\u00e9quipement.<\/li>\n\n\n\n<li>De la poussi\u00e8re et des d\u00e9bris se sont m\u00e9lang\u00e9s \u00e0 la mati\u00e8re fondue.<\/li>\n\n\n\n<li>Outils d'application ou r\u00e9cipients de stockage sales.<\/li>\n\n\n\n<li>Surfaces de chauss\u00e9e contamin\u00e9es.<\/li>\n<\/ul>\n\n\n\n<p>Lorsqu'un mat\u00e9riau blanc est m\u00e9lang\u00e9 \u00e0 des r\u00e9sidus provenant de lots pr\u00e9c\u00e9dents, m\u00eame une quantit\u00e9 relativement faible de contamination peut alt\u00e9rer son aspect.<\/p>\n\n\n\n<p><strong>Comment l'\u00e9viter<\/strong>: Nettoyez la cuve de fusion, les flexibles, le mat\u00e9riel d'application et les outils avant de passer \u00e0 un mat\u00e9riau thermoplastique blanc. Prot\u00e9gez le mat\u00e9riau de la poussi\u00e8re et de l'humidit\u00e9 pendant le stockage et la manutention, et assurez-vous que la chauss\u00e9e est propre et correctement pr\u00e9par\u00e9e avant l'application.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"6_Unsuitable_Application_Conditions\"><\/span>6. Conditions d'utilisation inappropri\u00e9es<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Les conditions environnementales et l'\u00e9tat de la chauss\u00e9e peuvent \u00e9galement contribuer \u00e0 l'apparition de taches ou rendre celles-ci plus visibles.<\/p>\n\n\n\n<p>Par exemple, l'application d'une peinture thermoplastique de marquage routier sur une surface humide, sale ou mal pr\u00e9par\u00e9e peut nuire \u00e0 l'adh\u00e9rence et entra\u00eener un rendu irr\u00e9gulier. Des temp\u00e9ratures \u00e9lev\u00e9es de la chauss\u00e9e peuvent \u00e9galement accro\u00eetre le risque de migration du bitume sur les rev\u00eatements en asphalte sensibles.<\/p>\n\n\n\n<p>D'autres facteurs, tels que l'exposition prolong\u00e9e au soleil et les intemp\u00e9ries, peuvent influencer la stabilit\u00e9 \u00e0 long terme de la couleur du marquage.<\/p>\n\n\n\n<p><strong>Comment l'\u00e9viter<\/strong>: Respectez les consignes du fabricant concernant la temp\u00e9rature de la chauss\u00e9e, l'\u00e9tat de s\u00e9cheresse de la surface, le nettoyage et les conditions d'application. V\u00e9rifiez le support avant de commencer les travaux et utilisez l'appr\u00eat sp\u00e9cifi\u00e9 lorsque cela est n\u00e9cessaire.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_to_Identify_the_Cause_of_Yellowing\"><\/span>Comment identifier la cause du jaunissement<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Avant de prendre des mesures correctives, les entrepreneurs doivent d\u00e9terminer si la d\u00e9coloration provient du mat\u00e9riau lui-m\u00eame, du processus de chauffage ou de la chauss\u00e9e.<\/p>\n\n\n\n<p>L'aspect et le moment d'apparition du jaunissement peuvent fournir des indices utiles.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-center\" data-align=\"center\">Sympt\u00f4me observ\u00e9<\/th><th class=\"has-text-align-center\" data-align=\"center\">Cause possible<\/th><th class=\"has-text-align-center\" data-align=\"center\">V\u00e9rification recommand\u00e9e<\/th><\/tr><\/thead><tbody><tr><td class=\"has-text-align-center\" data-align=\"center\">Le mat\u00e9riau jaunit dans la cuve de fusion<\/td><td class=\"has-text-align-center\" data-align=\"center\">Chauffage excessif ou d\u00e9gradation thermique<\/td><td class=\"has-text-align-center\" data-align=\"center\">V\u00e9rifier la temp\u00e9rature du mat\u00e9riau et la dur\u00e9e de chauffage<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">Imm\u00e9diatement apr\u00e8s l'application, le marquage appara\u00eet enti\u00e8rement jaune et uniforme.<\/td><td class=\"has-text-align-center\" data-align=\"center\">Surchauffe, probl\u00e8mes de formulation ou contamination<\/td><td class=\"has-text-align-center\" data-align=\"center\">Examiner la mati\u00e8re fondue, l'\u00e9quipement et l'\u00e9chantillon conserv\u00e9<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">Une d\u00e9coloration jaune ou brune appara\u00eet principalement au niveau de la jonction avec la chauss\u00e9e<\/td><td class=\"has-text-align-center\" data-align=\"center\">Migration du bitume ou probl\u00e8mes li\u00e9s au support<\/td><td class=\"has-text-align-center\" data-align=\"center\">Inspecter l'asphalte et \u00e9valuer la n\u00e9cessit\u00e9 d'un traitement d'isolation adapt\u00e9<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">Le jaunissement se manifeste sous forme de taches isol\u00e9es ou de stries<\/td><td class=\"has-text-align-center\" data-align=\"center\">Chauffage irr\u00e9gulier ou contamination<\/td><td class=\"has-text-align-center\" data-align=\"center\">Inspecter la chaudi\u00e8re, le mat\u00e9riel d'application et la chauss\u00e9e<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">Les marquages changent progressivement de couleur apr\u00e8s une exposition prolong\u00e9e \u00e0 l'air libre<\/td><td class=\"has-text-align-center\" data-align=\"center\">Instabilit\u00e9 de la couleur due \u00e0 l'alt\u00e9ration, \u00e0 l'oxydation ou \u00e0 la composition du produit<\/td><td class=\"has-text-align-center\" data-align=\"center\">Examiner les caract\u00e9ristiques techniques du produit et \u00e9valuer son impact sur l'environnement<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>Ces observations constituent des indices diagnostiques plut\u00f4t que des preuves d\u00e9finitives. Si la cause reste incertaine, conservez un \u00e9chantillon du mat\u00e9riau d'origine, consignez les conditions d'application et consultez le fabricant ou un laboratoire d'essais ind\u00e9pendant.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_to_Prevent_White_Thermoplastic_Road_Marking_Paint_From_Turning_Yellow\"><\/span>Comment \u00e9viter que la peinture thermoplastique blanche utilis\u00e9e pour le marquage routier ne jaunisse<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Pour \u00e9viter le jaunissement, il est n\u00e9cessaire d'assurer un contr\u00f4le qualit\u00e9 tout au long des \u00e9tapes de s\u00e9lection des mat\u00e9riaux, de stockage, de fusion et d'application.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"1_Select_High-Quality_Thermoplastic_Road_Marking_Material\"><\/span>1. Choisir un mat\u00e9riau thermoplastique de haute qualit\u00e9 pour le marquage routier<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Choisissez un produit dont la formulation est stable, contenant un pigment blanc adapt\u00e9 et dot\u00e9 d'un syst\u00e8me de liant con\u00e7u pour une application \u00e0 chaud.<\/p>\n\n\n\n<p>Consultez la documentation technique du fabricant et v\u00e9rifiez que le produit est conforme aux sp\u00e9cifications du projet. Selon le march\u00e9, cela peut inclure les exigences applicables au titre de la norme EN 1871, de l'AASHTO ou d'autres normes reconnues en mati\u00e8re de marquage routier.<\/p>\n\n\n\n<p>V\u00e9rifiez toujours la norme exacte et son applicabilit\u00e9 au produit et au projet en question.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"2_Control_Melting_Temperature_and_Heating_Time\"><\/span>2. Contr\u00f4le de la temp\u00e9rature de fusion et de la dur\u00e9e de chauffage<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Utilisez un \u00e9quipement de mesure de la temp\u00e9rature \u00e9talonn\u00e9 pour surveiller la temp\u00e9rature r\u00e9elle du mat\u00e9riau fondu.<\/p>\n\n\n\n<p>\u00c9vitez de d\u00e9passer la plage de temp\u00e9ratures indiqu\u00e9e par le fabricant. Ne laissez pas le produit dans la cuve plus longtemps que n\u00e9cessaire et limitez au maximum les cycles de chauffage r\u00e9p\u00e9t\u00e9s.<\/p>\n\n\n\n<p>Un contr\u00f4le ad\u00e9quat de la temp\u00e9rature est particuli\u00e8rement important lors de la production de grandes quantit\u00e9s de marquages routiers thermoplastiques blancs destin\u00e9s aux autoroutes, aux voies urbaines et \u00e0 d'autres projets d'infrastructure.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"3_Prepare_the_Pavement_Properly\"><\/span>3. Pr\u00e9parer correctement la chauss\u00e9e<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Avant l'application, \u00e9liminez la poussi\u00e8re, les particules d\u00e9tach\u00e9es, l'huile et tout autre contaminant pr\u00e9sents sur la chauss\u00e9e.<\/p>\n\n\n\n<p>S'assurer que la chauss\u00e9e r\u00e9pond aux conditions requises en mati\u00e8re de s\u00e9cheresse et de temp\u00e9rature. Dans le cas d'un enrob\u00e9 neuf, \u00e9valuer le risque de migration du bitume et choisir une m\u00e9thode d'att\u00e9nuation appropri\u00e9e si n\u00e9cessaire.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"4_Maintain_Clean_Application_Equipment\"><\/span>4. Veiller \u00e0 la propret\u00e9 du mat\u00e9riel d'application<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Un \u00e9quipement propre r\u00e9duit le risque de contamination provenant des lots pr\u00e9c\u00e9dents et d'autres substances \u00e9trang\u00e8res.<\/p>\n\n\n\n<p>Mettre en place des proc\u00e9dures de nettoyage r\u00e9guli\u00e8res pour les cuves de fusion, <strong><a href=\"https:\/\/roadskymarking.com\/fr\/road-marking-machines\" data-type=\"link\" data-id=\"https:\/\/roadskymarking.com\/\" target=\"_blank\" rel=\"noreferrer noopener\" style=\"text-decoration: underline;\">machines de marquage routier<\/a><\/strong>, les tuyaux et les r\u00e9cipients de stockage. Faites particuli\u00e8rement attention lorsque vous passez d'une couleur de marquage \u00e0 une autre.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"5_Conduct_Quality_Checks_Before_and_After_Application\"><\/span>5. Effectuer des contr\u00f4les de qualit\u00e9 avant et apr\u00e8s l'application<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Le contr\u00f4le qualit\u00e9 doit porter \u00e0 la fois sur le mat\u00e9riau et sur le marquage final.<\/p>\n\n\n\n<p>Avant l'application, v\u00e9rifiez l'aspect du produit, les informations relatives au lot et la documentation technique correspondante. Pendant l'application, notez la temp\u00e9rature du mat\u00e9riau, la dur\u00e9e de chauffage, l'\u00e9tat de la chauss\u00e9e et les autres param\u00e8tres importants du processus.<\/p>\n\n\n\n<p>Apr\u00e8s l'application, v\u00e9rifiez l'uniformit\u00e9 de la couleur, l'adh\u00e9rence, l'\u00e9tat de la surface et la conformit\u00e9 aux cahiers des charges du projet. Si n\u00e9cessaire, organisez des essais de r\u00e9tror\u00e9flectivit\u00e9, de r\u00e9sistance au d\u00e9rapage et d'autres indicateurs de performance.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_Should_You_Do_if_White_Thermoplastic_Road_Marking_Paint_Has_Already_Turned_Yellow\"><\/span>Que faire si la peinture thermoplastique blanche utilis\u00e9e pour le marquage routier a d\u00e9j\u00e0 jauni ?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Si le jaunissement est d\u00e9j\u00e0 apparu, la solution \u00e0 adopter d\u00e9pend de sa cause et de son degr\u00e9 de gravit\u00e9.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u00c9tape 1<\/strong>: V\u00e9rifiez \u00e0 quel moment la d\u00e9coloration s'est produite. D\u00e9terminez si le mat\u00e9riau \u00e9tait d\u00e9j\u00e0 jaune avant l'application, imm\u00e9diatement apr\u00e8s la fusion, juste apr\u00e8s l'application ou seulement apr\u00e8s une p\u00e9riode d'exposition \u00e0 l'air libre.<\/li>\n\n\n\n<li><strong>\u00c9tape 2<\/strong>: V\u00e9rifiez le processus de fusion et d'application. V\u00e9rifiez les temp\u00e9ratures enregistr\u00e9es, la dur\u00e9e de chauffage, la propret\u00e9 des \u00e9quipements et les proc\u00e9dures de manipulation.<\/li>\n\n\n\n<li><strong>\u00c9tape 3<\/strong>: Inspectez la chauss\u00e9e. Recherchez des traces de taches de bitume, de contamination, de probl\u00e8mes li\u00e9s \u00e0 l'humidit\u00e9 ou tout autre probl\u00e8me au niveau du support susceptible d'expliquer la d\u00e9coloration.<\/li>\n\n\n\n<li><strong>\u00c9tape 4<\/strong>: Comparez le r\u00e9sultat aux exigences du projet. V\u00e9rifiez si la couleur et les autres propri\u00e9t\u00e9s pertinentes r\u00e9pondent aux crit\u00e8res d'acceptation sp\u00e9cifi\u00e9s.<\/li>\n\n\n\n<li><strong>\u00c9tape 5<\/strong>: Consultez le fournisseur du mat\u00e9riau. Fournissez des photos, des informations sur les lots, les registres d'application et des \u00e9chantillons, si vous en disposez. Ces informations peuvent aider \u00e0 d\u00e9terminer si le probl\u00e8me est li\u00e9 \u00e0 la formulation, au processus d'application ou \u00e0 la chauss\u00e9e.<\/li>\n<\/ul>\n\n\n\n<p>Si le marquage ne r\u00e9pond pas aux exigences du projet, l'entrepreneur devra peut-\u00eatre retirer et r\u00e9appliquer le mat\u00e9riau ou mettre en \u0153uvre une autre mesure corrective approuv\u00e9e. Le simple fait d'appliquer une nouvelle couche de peinture blanche sur le marquage d\u00e9color\u00e9 ne suffira peut-\u00eatre pas \u00e0 r\u00e9soudre le probl\u00e8me sous-jacent.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Conclusion\"><\/span>Conclusion<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>La peinture thermoplastique blanche utilis\u00e9e pour le marquage routier peut jaunir pour plusieurs raisons, notamment une chaleur excessive, la d\u00e9gradation du liant, la migration du bitume, la contamination et l'instabilit\u00e9 de la couleur li\u00e9e \u00e0 la formulation.<\/p>\n\n\n\n<p>La solution la plus efficace consiste \u00e0 identifier la cause r\u00e9elle plut\u00f4t que de supposer que chaque cas de jaunissement est d\u00fb \u00e0 une mauvaise qualit\u00e9 du mat\u00e9riau. En choisissant un produit adapt\u00e9, en contr\u00f4lant les temp\u00e9ratures d'application, en veillant \u00e0 la propret\u00e9 du mat\u00e9riel et en pr\u00e9parant correctement la chauss\u00e9e, les entrepreneurs peuvent r\u00e9duire les risques de d\u00e9coloration et obtenir des r\u00e9sultats plus homog\u00e8nes en mati\u00e8re de marquage routier.<\/p>\n\n\n\n<p>Pour des solutions fiables en mati\u00e8re de marquage routier, Roadsky accompagne les entrepreneurs, les distributeurs et les projets d'infrastructure en leur proposant des produits de qualit\u00e9 <strong><a href=\"https:\/\/roadskymarking.com\/fr\/products\" data-type=\"link\" data-id=\"https:\/\/roadskymarking.com\/products\" target=\"_blank\" rel=\"noreferrer noopener\" style=\"text-decoration: underline;\">produits de signalisation routi\u00e8re<\/a><\/strong>. <strong><a href=\"https:\/\/roadskymarking.com\/fr\/contact\" data-type=\"link\" data-id=\"https:\/\/roadskymarking.com\/contact\" target=\"_blank\" rel=\"noreferrer noopener\" style=\"text-decoration: underline;\">Contacter Roadsky<\/a><\/strong> d\u00e8s aujourd'hui pour discuter de vos besoins et demander un devis.<\/p>","protected":false},"excerpt":{"rendered":"<p>White thermoplastic road marking paint is widely used for road centerlines, lane dividers, pedestrian crossings, stop lines, and other traffic markings. Its bright white appearance provides strong visual contrast against the road surface, helping drivers recognize lane boundaries and traffic instructions. However, one common problem encountered during road marking projects is that white thermoplastic road marking paint turns yellow after application. This discoloration can affect the appearance of road markings, reduce their visual contrast, and raise concerns about material quality and construction performance. Why does white thermoplastic road marking paint turn yellow? The most common causes include excessive heating during application, oxidation or degradation of the binder, bitumen migration from asphalt pavement, contamination, and poor-quality raw materials. Identifying the actual cause is essential for selecting the right corrective measures and preventing discoloration in future projects. What Causes White Thermoplastic Road Marking Paint to Turn Yellow? White thermoplastic road marking paint is a hot-applied material typically composed of synthetic resin, pigments, &#8230;<\/p>","protected":false},"author":1,"featured_media":5573,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[],"class_list":["post-5572","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-knowledge"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Why Does White Thermoplastic Road Marking Paint Turn Yellow<\/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:\/\/roadskymarking.com\/fr\/why-does-white-thermoplastic-road-marking-paint-turn-yellow.html\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Why Does White Thermoplastic Road Marking Paint Turn Yellow\" \/>\n<meta property=\"og:description\" content=\"White thermoplastic road marking paint is widely used for road centerlines, lane dividers, pedestrian crossings, stop lines, and other traffic markings. Its bright white appearance provides strong visual contrast against the road surface, helping drivers recognize lane boundaries and traffic instructions. However, one common problem encountered during road marking projects is that white thermoplastic road marking paint turns yellow after application. This discoloration can affect the appearance of road markings, reduce their visual contrast, and raise concerns about material quality and construction performance. Why does white thermoplastic road marking paint turn yellow? The most common causes include excessive heating during application, oxidation or degradation of the binder, bitumen migration from asphalt pavement, contamination, and poor-quality raw materials. Identifying the actual cause is essential for selecting the right corrective measures and preventing discoloration in future projects. What Causes White Thermoplastic Road Marking Paint to Turn Yellow? White thermoplastic road marking paint is a hot-applied material typically composed of synthetic resin, pigments, ...\" \/>\n<meta property=\"og:url\" content=\"https:\/\/roadskymarking.com\/fr\/why-does-white-thermoplastic-road-marking-paint-turn-yellow.html\" \/>\n<meta property=\"og:site_name\" content=\"Nanjing Roadsky Traffic Facility Co.,Ltd. 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