{"id":41384,"date":"2024-07-17T07:43:15","date_gmt":"2024-07-17T05:43:15","guid":{"rendered":"https:\/\/www.linseis.com\/polyethylene-terephtalate-pet-une-enquete-approfondie\/"},"modified":"2025-08-07T08:11:57","modified_gmt":"2025-08-07T06:11:57","slug":"polyethylene-terephtalate-pet-une-enquete-approfondie","status":"publish","type":"post","link":"https:\/\/www.linseis.com\/fr\/connaissance\/polyethylene-terephtalate-pet-une-enquete-approfondie\/","title":{"rendered":"Poly\u00e9thyl\u00e8ne t\u00e9r\u00e9phtalate (PET) : Une enqu\u00eate approfondie"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"41384\" class=\"elementor elementor-41384 elementor-8388\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-9eb8745 e-flex e-con-boxed elementor-invisible e-con e-parent\" data-id=\"9eb8745\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;animation&quot;:&quot;fadeInUp&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-030ae6e elementor-toc--minimized-on-tablet elementor-widget elementor-widget-table-of-contents\" data-id=\"030ae6e\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;headings_by_tags&quot;:[&quot;h2&quot;],&quot;exclude_headings_by_selector&quot;:[],&quot;no_headings_message&quot;:&quot;Aucun titre n\\u2019a \\u00e9t\\u00e9 trouv\\u00e9 sur cette page.&quot;,&quot;marker_view&quot;:&quot;numbers&quot;,&quot;minimize_box&quot;:&quot;yes&quot;,&quot;minimized_on&quot;:&quot;tablet&quot;,&quot;hierarchical_view&quot;:&quot;yes&quot;,&quot;min_height&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;min_height_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;min_height_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]}}\" data-widget_type=\"table-of-contents.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-toc__header\">\n\t\t\t\t\t\t<h4 class=\"elementor-toc__header-title\">\n\t\t\t\tTable des mati\u00e8res\t\t\t<\/h4>\n\t\t\t\t\t\t\t\t\t\t<div class=\"elementor-toc__toggle-button elementor-toc__toggle-button--expand\" role=\"button\" tabindex=\"0\" aria-controls=\"elementor-toc__030ae6e\" aria-expanded=\"true\" aria-label=\"Ouvrir la table des mati\u00e8res\"><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-down\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M207.029 381.476L12.686 187.132c-9.373-9.373-9.373-24.569 0-33.941l22.667-22.667c9.357-9.357 24.522-9.375 33.901-.04L224 284.505l154.745-154.021c9.379-9.335 24.544-9.317 33.901.04l22.667 22.667c9.373 9.373 9.373 24.569 0 33.941L240.971 381.476c-9.373 9.372-24.569 9.372-33.942 0z\"><\/path><\/svg><\/div>\n\t\t\t\t<div class=\"elementor-toc__toggle-button elementor-toc__toggle-button--collapse\" role=\"button\" tabindex=\"0\" aria-controls=\"elementor-toc__030ae6e\" aria-expanded=\"true\" aria-label=\"Fermer la table des mati\u00e8res\"><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-up\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M240.971 130.524l194.343 194.343c9.373 9.373 9.373 24.569 0 33.941l-22.667 22.667c-9.357 9.357-24.522 9.375-33.901.04L224 227.495 69.255 381.516c-9.379 9.335-24.544 9.317-33.901-.04l-22.667-22.667c-9.373-9.373-9.373-24.569 0-33.941L207.03 130.525c9.372-9.373 24.568-9.373 33.941-.001z\"><\/path><\/svg><\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<div id=\"elementor-toc__030ae6e\" class=\"elementor-toc__body\">\n\t\t\t<div class=\"elementor-toc__spinner-container\">\n\t\t\t\t<svg class=\"elementor-toc__spinner eicon-animation-spin e-font-icon-svg e-eicon-loading\" aria-hidden=\"true\" viewBox=\"0 0 1000 1000\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M500 975V858C696 858 858 696 858 500S696 142 500 142 142 304 142 500H25C25 237 238 25 500 25S975 237 975 500 763 975 500 975Z\"><\/path><\/svg>\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8a9139e elementor-widget elementor-widget-heading\" data-id=\"8a9139e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Cristallinit\u00e9 du PET<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ffaef65 elementor-widget elementor-widget-text-editor\" data-id=\"ffaef65\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Le <strong>poly\u00e9thyl\u00e8ne<\/strong> <strong>t\u00e9r\u00e9phtalate<\/strong> <strong>(PET)<\/strong>, commun\u00e9ment appel\u00e9 PET, occupe une place importante dans diverses productions industrielles et commerciales.<\/p><p>Ce thermoplastique pr\u00e9sente une <a href=\"https:\/\/www.linseis.com\/fr\/connaissance\/cristallisation-et-recristallisation-des-polymeres\/\"><strong>cristallinit\u00e9 <\/strong><\/a>qui d\u00e9termine en grande partie ses propri\u00e9t\u00e9s caract\u00e9ristiques.<br \/>Ce plastique polyvalent peut passer d&rsquo;une forme solide et stable \u00e0 une nature souple et flexible.<\/p><p>La souplesse de la composition structurelle du <strong>PET<\/strong> permet de l&rsquo;utiliser dans un large \u00e9ventail de cat\u00e9gories de produits.<br \/>Il est notamment utilis\u00e9 dans la fabrication de bouteilles de boissons, tirant parti de la r\u00e9sistance inh\u00e9rente au mat\u00e9riau et de sa nature translucide.<\/p><p>La forte proportion de structures cristallines dans le <strong>PET<\/strong> conf\u00e8re \u00e0 ces bouteilles la robustesse n\u00e9cessaire pour stocker des liquides en toute s\u00e9curit\u00e9 tout en restant faciles \u00e0 manipuler au quotidien.<br \/>Ces propri\u00e9t\u00e9s sont cruciales pour une solution d&#8217;emballage durable qui r\u00e9pond \u00e0 la fois aux exigences d&rsquo;int\u00e9grit\u00e9 du produit et de commodit\u00e9 pour le consommateur.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-cb5c309 e-con-full e-flex e-con e-child\" data-id=\"cb5c309\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-8f88511 e-con-full e-flex e-con e-child\" data-id=\"8f88511\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-96556fa elementor-widget elementor-widget-image\" data-id=\"96556fa\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"800\" height=\"450\" src=\"https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/11-1024x576.png\" class=\"attachment-large size-large wp-image-16347\" alt=\"\" srcset=\"https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/11-1024x576.png 1024w, https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/11-300x169.png 300w, https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/11-768x432.png 768w, https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/11.png 1140w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-97f0f26 e-con-full e-flex e-con e-child\" data-id=\"97f0f26\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-54dd63e elementor-widget elementor-widget-image\" data-id=\"54dd63e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"800\" height=\"450\" src=\"https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/10-1024x576.png\" class=\"attachment-large size-large wp-image-19568\" alt=\"\" srcset=\"https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/10-1024x576.png 1024w, https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/10-300x169.png 300w, https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/10-768x432.png 768w, https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/10.png 1140w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9bfc116 elementor-widget elementor-widget-heading\" data-id=\"9bfc116\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Enthalpie de fusion du PET<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f3a894e elementor-widget elementor-widget-text-editor\" data-id=\"f3a894e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>La <a href=\"https:\/\/www.linseis.com\/fr\/connaissance\/transition-de-phase-dune-substance-fusion\/\"><strong>point<\/strong> <strong>du<\/strong> <strong>PET<\/strong><\/a> se situe g\u00e9n\u00e9ralement entre 250\u00b0C et 260\u00b0C, ce qui est particuli\u00e8rement utile pour la production de fibres textiles.<\/p><p>Les textiles en <strong>PET<\/strong> sont appr\u00e9ci\u00e9s pour leur l\u00e9g\u00e8ret\u00e9 et leur grande r\u00e9sistance \u00e0 la traction.<br \/>La structure fine et la durabilit\u00e9 du <strong>PET<\/strong> contribuent \u00e0 la cr\u00e9ation de v\u00eatements qui sont \u00e0 la fois respirants et durables.<\/p><p>Pour d\u00e9terminer le <strong>point de<\/strong> <strong>fusion<\/strong>, un <a href=\"https:\/\/www.linseis.com\/fr\/produits\/dsc-differential-scanning-calorimetry\/\"><strong>Diff\u00e9rentiel de<\/strong> <strong>\u00e0 balayage<\/strong> <strong>\u00e0 balayage diff\u00e9rentiel<\/strong> <strong>(DSC)<\/strong><\/a> est g\u00e9n\u00e9ralement utilis\u00e9.<\/p><p>Pour une quantification pr\u00e9cise de la <strong>cristallinit\u00e9<\/strong> et de la <a href=\"https:\/\/www.linseis.com\/fr\/proprietes\/enthalpie\/\"><strong>l&rsquo;enthalpie<\/strong> <strong>de fusion<\/strong><\/a>\u00a0le <strong>Chip-DSC<\/strong> sp\u00e9cialis\u00e9 et brevet\u00e9 est utilis\u00e9.<\/p><p>Proches de leur point de <strong>fusion<\/strong> d&rsquo;environ 255\u00b0C, les granul\u00e9s de <strong>PET<\/strong> sont extrud\u00e9s en fibres qui sont ensuite fil\u00e9es.<br \/>Bien que les granul\u00e9s et les fibres r\u00e9sultantes aient le m\u00eame <strong>point de fusion,<\/strong> les fibres textiles acqui\u00e8rent leurs propri\u00e9t\u00e9s uniques gr\u00e2ce aux processus d&rsquo;extrusion et de filage.<\/p><p>Apr\u00e8s le filage, ces fibres acqui\u00e8rent une t\u00e9nacit\u00e9 et une r\u00e9sistance \u00e9lev\u00e9es, ce qui permet de produire des textiles durables et l\u00e9gers, tels que des v\u00eatements de sport, qui sont \u00e0 la fois respirants et r\u00e9sistants aux contraintes d&rsquo;une activit\u00e9 physique intense.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-1e7d97c e-con-full e-flex e-con e-child\" data-id=\"1e7d97c\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-e53ff6a e-con-full e-flex e-con e-child\" data-id=\"e53ff6a\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-3c88d58 elementor-widget elementor-widget-image\" data-id=\"3c88d58\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"800\" height=\"450\" src=\"https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/12-1024x576.png\" class=\"attachment-large size-large wp-image-16372\" alt=\"\" srcset=\"https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/12-1024x576.png 1024w, https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/12-300x169.png 300w, https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/12-768x432.png 768w, https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/12.png 1140w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-5871a10 e-con-full e-flex e-con e-child\" data-id=\"5871a10\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-17612ce elementor-widget elementor-widget-image\" data-id=\"17612ce\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"450\" src=\"https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/13-1024x576.png\" class=\"attachment-large size-large wp-image-19575\" alt=\"\" srcset=\"https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/13-1024x576.png 1024w, https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/13-300x169.png 300w, https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/13-768x432.png 768w, https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/13.png 1140w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-227b6c4 elementor-widget elementor-widget-heading\" data-id=\"227b6c4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Diversit\u00e9 et coh\u00e9rence du PET<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3112811 elementor-widget elementor-widget-text-editor\" data-id=\"3112811\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Le <strong>PET<\/strong> se distingue par sa diversit\u00e9 et sa durabilit\u00e9.\nL&rsquo;ajustement des param\u00e8tres de traitement permet d&rsquo;optimiser les propri\u00e9t\u00e9s m\u00e9caniques et optiques du produit final. <\/p>\n<p>Sa polyvalence permet de cr\u00e9er une vari\u00e9t\u00e9 de produits, des structures robustes aux structures flexibles.<\/p>\n<p>Les films <strong>PET<\/strong> en <strong>sont<\/strong> un exemple : Ils sont r\u00e9sistants aux contraintes physiques et \u00e0 diverses influences environnementales, c&rsquo;est pourquoi ils sont souvent utilis\u00e9s dans les emballages ou comme films de protection d&rsquo;\u00e9cran.<\/p>\n<p>Leur r\u00e9sistance et leur long\u00e9vit\u00e9 en font une solution \u00e9conomique de haute qualit\u00e9.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-f5b9810 e-con-full e-flex e-con e-child\" data-id=\"f5b9810\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-9d4761a e-con-full e-flex e-con e-child\" data-id=\"9d4761a\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-cd7a0d4 elementor-widget elementor-widget-image\" data-id=\"cd7a0d4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"450\" src=\"https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/9-1024x576.png\" class=\"attachment-large size-large wp-image-16382\" alt=\"\" srcset=\"https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/9-1024x576.png 1024w, https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/9-300x169.png 300w, https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/9-768x432.png 768w, https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/9.png 1140w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-f891ff5 e-con-full e-flex e-con e-child\" data-id=\"f891ff5\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-8d95817 elementor-widget elementor-widget-image\" data-id=\"8d95817\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"450\" src=\"https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/14-1024x576.png\" class=\"attachment-large size-large wp-image-19585\" alt=\"\" srcset=\"https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/14-1024x576.png 1024w, https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/14-300x169.png 300w, https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/14-768x432.png 768w, https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/14.png 1140w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c85ce21 elementor-widget elementor-widget-heading\" data-id=\"c85ce21\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Stabilit\u00e9 thermique et temp\u00e9rature de transition vitreuse du PET<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-224c225 elementor-widget elementor-widget-text-editor\" data-id=\"224c225\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Les <a href=\"https:\/\/www.linseis.com\/fr\/connaissance\/mesure-de-la-stabilite-thermique\/\"><strong>stabilit\u00e9 thermique<\/strong><\/a> <strong>du<\/strong> <strong>PET<\/strong> permet de l&rsquo;utiliser dans de nombreux produits.<br \/>Par exemple, les films <strong>PET<\/strong> conservent leur forme et leur transparence \u00e0 des temp\u00e9ratures variables, ce qui en fait un choix id\u00e9al pour l&#8217;emballage, en particulier pour les produits alimentaires.<\/p><p>Gr\u00e2ce \u00e0 cette r\u00e9sistance \u00e0 la temp\u00e9rature, les films <strong>PET<\/strong> peuvent \u00eatre utilis\u00e9s aussi bien dans des rayons froids que dans des environnements chauds sans perdre de leur clart\u00e9 ni se r\u00e9tr\u00e9cir.<br \/>Ils sont \u00e9galement r\u00e9sistants aux produits chimiques, de sorte qu&rsquo;ils ne r\u00e9agissent pas avec les aliments emball\u00e9s et ne provoquent pas de changements de go\u00fbt ou d&rsquo;odeur ind\u00e9sirables.<\/p><p>En raison de leur <strong>stabilit\u00e9<\/strong> <strong>thermique<\/strong>, les films <strong>PET<\/strong> sont \u00e9galement utilis\u00e9s dans des applications techniques.<br \/>Par exemple, dans l&rsquo;industrie \u00e9lectronique, ils sont utilis\u00e9s comme mat\u00e9riaux isolants ou comme substrats pour les circuits flexibles.<br \/>Leur capacit\u00e9 \u00e0 r\u00e9sister \u00e0 des temp\u00e9ratures \u00e9lev\u00e9es sans se d\u00e9former les rend particuli\u00e8rement pr\u00e9cieux pour ces applications critiques.<\/p><p>Dans l&rsquo;industrie automobile, les films <strong>PET<\/strong> sont utilis\u00e9s pour les vitres en raison de leurs excellentes propri\u00e9t\u00e9s thermiques et de leur r\u00e9sistance aux UV.<br \/>Ils prot\u00e8gent les occupants des rayons UV nocifs et r\u00e9duisent simultan\u00e9ment la temp\u00e9rature int\u00e9rieure, ce qui diminue le besoin de climatisation et optimise donc la consommation de carburant.<\/p><p>Enfin, les films <strong>PET<\/strong> sont \u00e9galement recherch\u00e9s dans la technologie solaire.<br \/>Ils servent de films de protection et de couverture pour les modules photovolta\u00efques, prot\u00e9geant les cellules solaires des intemp\u00e9ries tout en permettant \u00e0 la lumi\u00e8re du soleil de passer efficacement.<\/p><p>La temp\u00e9rature de transition vitreuse du <strong>PET<\/strong> se situe g\u00e9n\u00e9ralement entre 70\u00b0C et 80\u00b0C, ce qui signifie qu&rsquo;il reste stable dans une large gamme de temp\u00e9ratures.<\/p><p>Un exemple pertinent est celui des films d&#8217;emballage <strong>en PET<\/strong> qui r\u00e9sistent aux fluctuations de temp\u00e9rature sans devenir cassants ni perdre leur flexibilit\u00e9.<br \/>Le <strong>Chip-DSC<\/strong> permet \u00e9galement de d\u00e9terminer avec pr\u00e9cision la temp\u00e9rature \u00e0 laquelle se produit la transition vitreuse.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-716d24e e-con-full e-flex e-con e-child\" data-id=\"716d24e\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-a9d25b9 e-con-full e-flex e-con e-child\" data-id=\"a9d25b9\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-db4dbc0 elementor-widget elementor-widget-image\" data-id=\"db4dbc0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"450\" src=\"https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/17-1024x576.png\" class=\"attachment-large size-large wp-image-16392\" alt=\"\" srcset=\"https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/17-1024x576.png 1024w, https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/17-300x169.png 300w, https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/17-768x432.png 768w, https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/17.png 1140w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-a0d70da e-con-full e-flex e-con e-child\" data-id=\"a0d70da\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-62a8403 elementor-widget elementor-widget-image\" data-id=\"62a8403\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"450\" src=\"https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/15-1024x576.png\" class=\"attachment-large size-large wp-image-19592\" alt=\"\" srcset=\"https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/15-1024x576.png 1024w, https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/15-300x169.png 300w, https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/15-768x432.png 768w, https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/15.png 1140w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e315f33 elementor-widget elementor-widget-heading\" data-id=\"e315f33\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Diff\u00e9rents types de PET<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-26b9ead elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"26b9ead\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>En ce qui concerne les diff\u00e9rents types de <strong>PET<\/strong>, les diff\u00e9rences de <strong>cristallinit\u00e9<\/strong> et d&rsquo;additifs conduisent \u00e0 des produits aux propri\u00e9t\u00e9s physiques diverses.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6d2a6b0 elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"6d2a6b0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"text-decoration: underline;\">Par exemple :<\/span><\/p>\n<ul>\n<li><strong>Bouteilles :<\/strong> Souvent fabriqu\u00e9es en PET cristallin, connu pour sa transparence et sa r\u00e9sistance.<\/li>\n<li><strong>Composants \u00e9lectroniques :<\/strong> PET amorphe, appr\u00e9ci\u00e9 pour sa stabilit\u00e9 de forme et ses propri\u00e9t\u00e9s d&rsquo;isolation \u00e9lectrique.<\/li>\n<li><strong>V\u00eatements de sport :<\/strong> PET \u00e9lastique, souvent utilis\u00e9 pour les v\u00eatements respirants et durables.<\/li>\n<\/ul>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9fbf0b6 elementor-widget elementor-widget-heading\" data-id=\"9fbf0b6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Application<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-408c60a elementor-widget__width-initial elementor-widget elementor-widget-image\" data-id=\"408c60a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"550\" src=\"https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/Chip-DSC-PET-Sample-2-1024x704.png\" class=\"attachment-large size-large wp-image-25336\" alt=\"\" srcset=\"https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/Chip-DSC-PET-Sample-2-1024x704.png 1024w, https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/Chip-DSC-PET-Sample-2-300x206.png 300w, https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/Chip-DSC-PET-Sample-2-768x528.png 768w, https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/Chip-DSC-PET-Sample-2-1536x1056.png 1536w, https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/Chip-DSC-PET-Sample-2-2048x1408.png 2048w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">App.\nNr. 02-011-002 Chip-DSC 10 - Polymere - PET <\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-af91780 elementor-widget elementor-widget-text-editor\" data-id=\"af91780\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>\u00c0 titre d&rsquo;exemple, un granul\u00e9 de <strong>PET<\/strong> <strong>(poly\u00e9thyl\u00e8ne t\u00e9r\u00e9phtalate)<\/strong> a \u00e9t\u00e9 chauff\u00e9, refroidi par trempe pour geler l&rsquo;\u00e9tat amorphe, puis analys\u00e9 par <strong>Chip-DSC<\/strong> avec une vitesse de chauffage lin\u00e9aire de 50 K\/min.<\/p>\n<p>La courbe obtenue montre une transition vitreuse significative vers 80\u00b0C, suivie d&rsquo;une <strong>cristallisation<\/strong> \u00e0 froid des parties amorphes \u00e0 partir de 148\u00b0C et d&rsquo;un <strong>pic de<\/strong> <strong>fusion<\/strong> \u00e0 230\u00b0C.<\/p>\n<p>L&rsquo;<strong>enthalpie<\/strong> du pic de <strong>cristallisation<\/strong> \u00e0 froid peut \u00eatre utilis\u00e9e pour d\u00e9terminer le degr\u00e9 de <strong>cristallinit\u00e9<\/strong> par comparaison avec l&rsquo;<strong>enthalpie<\/strong> du <strong>PET<\/strong> cristallin pur.\nEn fonction de l&rsquo;histoire thermique de l&rsquo;\u00e9chantillon, le degr\u00e9 de cristallinit\u00e9 change et peut donc \u00eatre utilis\u00e9 comme indicateur de l&rsquo;histoire et du comportement m\u00e9canique du polym\u00e8re. <\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d240cb5 elementor-widget elementor-widget-heading\" data-id=\"d240cb5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Conclusion<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-27d0ae9 elementor-widget elementor-widget-text-editor\" data-id=\"27d0ae9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Dans l&rsquo;ensemble, le <strong>PET<\/strong> pr\u00e9sente une diversit\u00e9 impressionnante en raison de sa <strong>cristallinit\u00e9<\/strong>, de sa <strong>stabilit\u00e9<\/strong> <strong>thermique<\/strong> et de ses <strong>temp\u00e9ratures<\/strong> <strong>sp\u00e9cifiques<\/strong> <strong>de<\/strong> <strong>fusion<\/strong> et de <strong>transition<\/strong> <strong>vitreuse<\/strong>.<\/p>\n<p>Il s&rsquo;agit d&rsquo;un \u00e9l\u00e9ment de construction essentiel dans de nombreux secteurs et il sera passionnant de voir les innovations et les applications futures du <strong>PET<\/strong> dans le monde des plastiques.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6336c86 elementor-widget elementor-widget-spacer\" data-id=\"6336c86\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Le poly\u00e9thyl\u00e8ne t\u00e9r\u00e9phtalate, commun\u00e9ment appel\u00e9 PET, occupe une place importante dans de nombreuses productions industrielles et commerciales.<\/p>\n","protected":false},"author":3,"featured_media":13738,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[187],"tags":[],"class_list":["post-41384","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-connaissance"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.linseis.com\/fr\/wp-json\/wp\/v2\/posts\/41384","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.linseis.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.linseis.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.linseis.com\/fr\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.linseis.com\/fr\/wp-json\/wp\/v2\/comments?post=41384"}],"version-history":[{"count":0,"href":"https:\/\/www.linseis.com\/fr\/wp-json\/wp\/v2\/posts\/41384\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.linseis.com\/fr\/wp-json\/wp\/v2\/media\/13738"}],"wp:attachment":[{"href":"https:\/\/www.linseis.com\/fr\/wp-json\/wp\/v2\/media?parent=41384"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.linseis.com\/fr\/wp-json\/wp\/v2\/categories?post=41384"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.linseis.com\/fr\/wp-json\/wp\/v2\/tags?post=41384"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}