{"id":41313,"date":"2024-07-22T08:45:59","date_gmt":"2024-07-22T06:45:59","guid":{"rendered":"https:\/\/www.linseis.com\/mesure-de-la-stabilite-thermique\/"},"modified":"2025-08-07T07:25:15","modified_gmt":"2025-08-07T05:25:15","slug":"mesure-de-la-stabilite-thermique","status":"publish","type":"post","link":"https:\/\/www.linseis.com\/fr\/connaissance\/mesure-de-la-stabilite-thermique\/","title":{"rendered":"Mesure de la stabilit\u00e9 thermique"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"41313\" class=\"elementor elementor-41313 elementor-14658\" 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-27e7523 elementor-toc--minimized-on-tablet elementor-widget elementor-widget-table-of-contents\" data-id=\"27e7523\" 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__27e7523\" 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__27e7523\" 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__27e7523\" 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\">Qu'est-ce que la stabilit\u00e9 thermique ?<\/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>Un plastique est <strong>thermiquement<\/strong> stable s&rsquo;il ne se d\u00e9compose pas sous l&rsquo;influence de la temp\u00e9rature.\nLe contraire de la thermostabilit\u00e9 est la thermolabilit\u00e9. <\/p>\n<p>Lorsque des substances organiques ou des mati\u00e8res plastiques sont expos\u00e9es \u00e0 la chaleur, \u00e0 la lumi\u00e8re et, surtout, \u00e0 l&rsquo;oxyg\u00e8ne de l&rsquo;air pendant une p\u00e9riode prolong\u00e9e, un <strong>processus<\/strong> dit <strong>de<\/strong> <strong>vieillissement<\/strong> se produit.\nOutre les propri\u00e9t\u00e9s chimiques, ce processus affecte \u00e9galement les propri\u00e9t\u00e9s physiques d&rsquo;un mat\u00e9riau.\nOn peut le constater de la mani\u00e8re suivante : D&rsquo;une part, il s&rsquo;agit d&rsquo;une oxydation lente des composants individuels et, d&rsquo;autre part, certaines mol\u00e9cules ne sont pas stables \u00e0 long terme et se d\u00e9sint\u00e8grent apr\u00e8s une p\u00e9riode de temps inconnue.  <\/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-eac9a92 elementor-widget__width-initial elementor-widget elementor-widget-image\" data-id=\"eac9a92\" 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\/Thermische-Stabilitaet-Infografik-1024x576.png\" class=\"attachment-large size-large wp-image-14676\" alt=\"\" srcset=\"https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/Thermische-Stabilitaet-Infografik-1024x576.png 1024w, https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/Thermische-Stabilitaet-Infografik-300x169.png 300w, https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/Thermische-Stabilitaet-Infografik-768x432.png 768w, https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/Thermische-Stabilitaet-Infografik-1536x864.png 1536w, https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/Thermische-Stabilitaet-Infografik.png 1920w\" 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 class=\"elementor-element elementor-element-0f74b29 elementor-widget elementor-widget-heading\" data-id=\"0f74b29\" 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\">Analyse de la stabilit\u00e9 thermique \u00e0 l'aide du test OIT<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-33229bc elementor-widget elementor-widget-text-editor\" data-id=\"33229bc\" 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>Pour \u00e9tudier la stabilit\u00e9 thermique de ces compos\u00e9s, on utilise souvent le <strong>\u00ab\u00a0<a href=\"https:\/\/www.linseis.com\/fr\/connaissance\/temps-et-temperature-dinduction-de-loxydation\/\">test OIT<\/a>\u00ab\u00a0<\/strong>, o\u00f9 OIT signifie <strong>\u00ab\u00a0temps d&rsquo;induction de l&rsquo;oxydation\u00a0\u00bb.<\/strong><br \/>Dans ce test, l&rsquo;\u00e9chantillon \u00e0 examiner est amen\u00e9 \u00e0 une temp\u00e9rature inf\u00e9rieure au point de fusion dans une atmosph\u00e8re inerte.<\/p><p>L&rsquo;atmosph\u00e8re est ensuite remplac\u00e9e par de l&rsquo;oxyg\u00e8ne ou de l&rsquo;air et le signal calorim\u00e9trique est mesur\u00e9.<br \/>Au bout d&rsquo;un certain temps, une oxydation se produit, qui se manifeste normalement par une r\u00e9action exothermique, et la temp\u00e9rature de l&rsquo;\u00e9chantillon augmente l\u00e9g\u00e8rement.<\/p><p>Le temps de r\u00e9action correspondant peut \u00eatre lu \u00e0 partir de cette petite augmentation et cela donne le temps OIT.<br \/>Une d\u00e9claration sur la vitesse de r\u00e9action et la vitesse de d\u00e9composition de l&rsquo;oxydation naissante peut \u00e9galement \u00eatre faite \u00e0 l&rsquo;aide de la DSC si les donn\u00e9es sont \u00e9valu\u00e9es \u00e0 l&rsquo;aide du logiciel associ\u00e9.<\/p>\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-9886ca6 elementor-widget elementor-widget-heading\" data-id=\"9886ca6\" 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\">Quelle norme s'applique \u00e0 la mesure de la thermostabilit\u00e9 ?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ca73f52 elementor-widget elementor-widget-text-editor\" data-id=\"ca73f52\" 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<ul>\n<li><a href=\"https:\/\/www.astm.org\/e2550-21.html\" target=\"_blank\" rel=\"noopener\"><strong>Norme ASTM E2550 &#8211; 17 (M\u00e9thode d&rsquo;essai standard pour la stabilit\u00e9 thermique par thermogravim\u00e9trie)<\/strong><\/a><\/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-7e598f0 elementor-widget elementor-widget-spacer\" data-id=\"7e598f0\" 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>Un plastique est thermiquement stable s&rsquo;il ne se d\u00e9compose pas sous l&rsquo;influence de la temp\u00e9rature.<br \/>\nLe contraire de la thermostabilit\u00e9 est la thermolabilit\u00e9. <\/p>\n","protected":false},"author":3,"featured_media":14662,"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-41313","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\/41313","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=41313"}],"version-history":[{"count":0,"href":"https:\/\/www.linseis.com\/fr\/wp-json\/wp\/v2\/posts\/41313\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.linseis.com\/fr\/wp-json\/wp\/v2\/media\/14662"}],"wp:attachment":[{"href":"https:\/\/www.linseis.com\/fr\/wp-json\/wp\/v2\/media?parent=41313"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.linseis.com\/fr\/wp-json\/wp\/v2\/categories?post=41313"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.linseis.com\/fr\/wp-json\/wp\/v2\/tags?post=41313"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}