{"id":13509,"date":"2023-04-03T03:59:06","date_gmt":"2023-04-03T03:59:06","guid":{"rendered":"https:\/\/hansaplas.com\/?p=13509"},"modified":"2023-04-06T01:18:27","modified_gmt":"2023-04-06T01:18:27","slug":"quelles-sont-les-proprietes-du-ptfe-le-guide-ultime","status":"publish","type":"post","link":"https:\/\/hansaplas.com\/fr\/proprietes-du-ptfe\/","title":{"rendered":"Quelles sont les propri\u00e9t\u00e9s du PTFE\u00a0? \u2013 Le guide ultime"},"content":{"rendered":"<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-13539 aligncenter\" src=\"http:\/\/hansaplas.com\/wp-content\/uploads\/2023\/04\/PTFE-Properties.jpg\" alt=\"Propri\u00e9t\u00e9s du PTFE\" width=\"800\" height=\"450\" srcset=\"https:\/\/hansaplas.com\/wp-content\/uploads\/2023\/04\/PTFE-Properties.jpg 800w, https:\/\/hansaplas.com\/wp-content\/uploads\/2023\/04\/PTFE-Properties-768x432.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/p>\n<p>Le PTFE est un mat\u00e9riau unique compos\u00e9 d&#039;atomes de fluor et de carbone. Il est g\u00e9n\u00e9ralement hydrophobe, non collant, non r\u00e9actif, de haute densit\u00e9 et r\u00e9sistant aux temp\u00e9ratures \u00e9lev\u00e9es.<\/p>\n<p>Cela en fait un choix parfait pour de nombreuses applications<\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_81 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 of Contents<\/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 of Content\"><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:\/\/hansaplas.com\/fr\/proprietes-du-ptfe\/#PTFE_Mechanical_Properties\" >Propri\u00e9t\u00e9s m\u00e9caniques du PTFE<\/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:\/\/hansaplas.com\/fr\/proprietes-du-ptfe\/#Tensile_and_Compressive_Properties\" >Propri\u00e9t\u00e9s de traction et de compression.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/hansaplas.com\/fr\/proprietes-du-ptfe\/#Flexibility\" >Flexibilit\u00e9<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/hansaplas.com\/fr\/proprietes-du-ptfe\/#Hardness_of_PTFE\" >Duret\u00e9 du PTFE<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/hansaplas.com\/fr\/proprietes-du-ptfe\/#Coefficient_of_Friction\" >Coefficient de frottement<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/hansaplas.com\/fr\/proprietes-du-ptfe\/#Wear_Properties\" >Propri\u00e9t\u00e9s d&#039;usure<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/hansaplas.com\/fr\/proprietes-du-ptfe\/#Physical_Properties\" >Propri\u00e9t\u00e9s physiques<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/hansaplas.com\/fr\/proprietes-du-ptfe\/#PTFE_Thermal_Properties\" >Propri\u00e9t\u00e9s thermiques du PTFE<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/hansaplas.com\/fr\/proprietes-du-ptfe\/#Thermal_Stability\" >Stabilit\u00e9 thermique<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/hansaplas.com\/fr\/proprietes-du-ptfe\/#Transition_Points\" >Points de transition<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/hansaplas.com\/fr\/proprietes-du-ptfe\/#Thermal_Expansion\" >Dilatation thermique<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/hansaplas.com\/fr\/proprietes-du-ptfe\/#Thermal_Conductivity\" >Conductivit\u00e9 thermique<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/hansaplas.com\/fr\/proprietes-du-ptfe\/#Specific_Heat\" >Chaleur sp\u00e9cifique<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/hansaplas.com\/fr\/proprietes-du-ptfe\/#Electrical_Properties_of_PTFE\" >Propri\u00e9t\u00e9s \u00e9lectriques du PTFE<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/hansaplas.com\/fr\/proprietes-du-ptfe\/#Dielectric_strength\" >Rigidit\u00e9 di\u00e9lectrique<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/hansaplas.com\/fr\/proprietes-du-ptfe\/#Dielectric_Constant_and_Dissipation_Factor\" >Constante di\u00e9lectrique et facteur de dissipation<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/hansaplas.com\/fr\/proprietes-du-ptfe\/#Arc_Resistance\" >R\u00e9sistance \u00e0 l&#039;arc<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/hansaplas.com\/fr\/proprietes-du-ptfe\/#Corona_Effect\" >Effet Corona<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/hansaplas.com\/fr\/proprietes-du-ptfe\/#Optical_Properties_of_PTFE\" >Propri\u00e9t\u00e9s optiques du PTFE<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/hansaplas.com\/fr\/proprietes-du-ptfe\/#Resistance_of_Light\" >R\u00e9sistance de la lumi\u00e8re<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-21\" href=\"https:\/\/hansaplas.com\/fr\/proprietes-du-ptfe\/#Resistance_to_Radiation\" >R\u00e9sistance aux radiations<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-22\" href=\"https:\/\/hansaplas.com\/fr\/proprietes-du-ptfe\/#Other_PTFE_Material_Properties\" >Autres propri\u00e9t\u00e9s du mat\u00e9riau PTFE<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-23\" href=\"https:\/\/hansaplas.com\/fr\/proprietes-du-ptfe\/#Plastic_%E2%80%9CMemory%E2%80%9D\" >\u00ab M\u00e9moire \u00bb en plastique<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-24\" href=\"https:\/\/hansaplas.com\/fr\/proprietes-du-ptfe\/#Gas_Permeability_of_PTFE\" >Perm\u00e9abilit\u00e9 aux gaz du PTFE<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-25\" href=\"https:\/\/hansaplas.com\/fr\/proprietes-du-ptfe\/#Resistant_to_Corrosion_by_Chemical\" >R\u00e9sistant \u00e0 la corrosion chimique<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-26\" href=\"https:\/\/hansaplas.com\/fr\/proprietes-du-ptfe\/#Solvent_Resistance\" >R\u00e9sistance aux solvants<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-27\" href=\"https:\/\/hansaplas.com\/fr\/proprietes-du-ptfe\/#How_Additives_Fillers_Affect_PTFE_Material_Properties\" >Comment les additifs et les charges affectent les propri\u00e9t\u00e9s du PTFE<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-28\" href=\"https:\/\/hansaplas.com\/fr\/proprietes-du-ptfe\/#Glass_Fiber\" >Fibre de verre<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-29\" href=\"https:\/\/hansaplas.com\/fr\/proprietes-du-ptfe\/#Adding_of_Carbon\" >Ajout de carbone<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-30\" href=\"https:\/\/hansaplas.com\/fr\/proprietes-du-ptfe\/#Carbon_Combined_with_Graphite\" >Carbone combin\u00e9 au graphite<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-31\" href=\"https:\/\/hansaplas.com\/fr\/proprietes-du-ptfe\/#Bronze-filled_PTFE_Compound\" >Compos\u00e9 PTFE charg\u00e9 de bronze<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-32\" href=\"https:\/\/hansaplas.com\/fr\/proprietes-du-ptfe\/#Molybdenum_MoS2\" >Molybdenum (MoS2)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-33\" href=\"https:\/\/hansaplas.com\/fr\/proprietes-du-ptfe\/#Calcium_Fluoride_CaF2\" >Calcium Fluoride (CaF2)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-34\" href=\"https:\/\/hansaplas.com\/fr\/proprietes-du-ptfe\/#Mica\" >Mica<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-35\" href=\"https:\/\/hansaplas.com\/fr\/proprietes-du-ptfe\/#Ekonol\" >\u00c9konol<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-36\" href=\"https:\/\/hansaplas.com\/fr\/proprietes-du-ptfe\/#Wollastonite\" >Wollastonite<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-37\" href=\"https:\/\/hansaplas.com\/fr\/proprietes-du-ptfe\/#Conclusion\" >Conclusion<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"PTFE_Mechanical_Properties\"><\/span>Propri\u00e9t\u00e9s m\u00e9caniques du PTFE<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<figure id=\"attachment_13510\" aria-describedby=\"caption-attachment-13510\" style=\"width: 500px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-13510 size-full\" src=\"http:\/\/hansaplas.com\/wp-content\/uploads\/2023\/04\/Figure-1-PTFE-1.jpg\" alt=\"PTFE\" width=\"500\" height=\"350\" \/><figcaption id=\"caption-attachment-13510\" class=\"wp-caption-text\">PTFE<\/figcaption><\/figure>\n<h3><span class=\"ez-toc-section\" id=\"Tensile_and_Compressive_Properties\"><\/span>Propri\u00e9t\u00e9s de traction et de compression.<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>La pression varie de 10 MPa \u00e0 35-40 MPa. Cela d\u00e9pend de la charge utilis\u00e9e, des param\u00e8tres de moulage et de la qualit\u00e9 de la r\u00e9sine de base.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Flexibility\"><\/span>Flexibilit\u00e9<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Le module de flexion diff\u00e8re en fonction des diff\u00e9rents environnements de temp\u00e9rature, comme indiqu\u00e9 ci-dessous.<\/p>\n<table>\n<tbody>\n<tr>\n<td width=\"308\">Temp\u00e9rature<\/td>\n<td width=\"308\">Module de flexion<\/td>\n<\/tr>\n<tr>\n<td width=\"308\">(20-22)<sup>0<\/sup>C.<\/td>\n<td width=\"308\">(350-650)N\/mm2<\/td>\n<\/tr>\n<tr>\n<td width=\"308\">-80<sup>0<\/sup>C.<\/td>\n<td width=\"308\">2000N\/mm2<\/td>\n<\/tr>\n<tr>\n<td width=\"308\">100<sup>0<\/sup>C.<\/td>\n<td width=\"308\">200 N\/mm2<\/td>\n<\/tr>\n<tr>\n<td width=\"308\">260<sup>0<\/sup>C.<\/td>\n<td width=\"308\">45 N\/mm2<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3><span class=\"ez-toc-section\" id=\"Hardness_of_PTFE\"><\/span>Duret\u00e9 du PTFE<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<table>\n<tbody>\n<tr>\n<td width=\"308\">M\u00e9thode de mesure<\/td>\n<td width=\"308\">Valeur<\/td>\n<\/tr>\n<tr>\n<td width=\"308\">ASTM D 2240<\/td>\n<td width=\"308\">D50- D60.<\/td>\n<\/tr>\n<tr>\n<td width=\"308\">DIN 5345<\/td>\n<td width=\"308\">(27-32) N\/mm2<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3><span class=\"ez-toc-section\" id=\"Coefficient_of_Friction\"><\/span>Coefficient de frottement<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<div class=\"ast-oembed-container\" style=\"height: 100%;\"><iframe loading=\"lazy\" title=\"Qu&#039;est-ce que le polyt\u00e9trafluoro\u00e9thyl\u00e8ne (PTFE, T\u00e9flon) et \u00e0 quoi sert-il ?\" width=\"500\" height=\"375\" src=\"https:\/\/www.youtube.com\/embed\/lA0ytKrWa_o?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/div>\n<p>&nbsp;<\/p>\n<p>Un faible coefficient de frottement compris entre 0,05 et 0,09. Il est g\u00e9n\u00e9ralement constant \u00e0 temp\u00e9rature ambiante.<\/p>\n<p>Cependant, le coefficient de frottement change en fonction des facteurs suivants :<\/p>\n<ol>\n<li>L\u2019augmentation de la charge d\u2019un objet qui glisse sur la surface du PTFE diminuera le coefficient de frottement.<\/li>\n<li>Augmente avec l&#039;augmentation de la vitesse de l&#039;objet en vol plan\u00e9.<\/li>\n<\/ol>\n<h3><span class=\"ez-toc-section\" id=\"Wear_Properties\"><\/span>Propri\u00e9t\u00e9s d&#039;usure<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Cela d\u00e9pend de la surface des mat\u00e9riaux en contact avec le PTFE, ainsi que de la vitesse de glissement et des charges appliqu\u00e9es. En g\u00e9n\u00e9ral, le PTFE pr\u00e9sente une tr\u00e8s faible r\u00e9sistance \u00e0 l&#039;usure, ce qui le rend adapt\u00e9 aux charges l\u00e9g\u00e8res, mais pas aux charges lourdes.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Physical_Properties\"><\/span>Propri\u00e9t\u00e9s physiques<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Les principales propri\u00e9t\u00e9s physiques comprennent :<\/p>\n<ul>\n<li>03% absorption d&#039;eau maximale<\/li>\n<li>36 \u00e0 0,91 g\/cc de masse volumique apparente<\/li>\n<li>01 \u00e0 0,058 retrait lin\u00e9aire<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"PTFE_Thermal_Properties\"><\/span>Propri\u00e9t\u00e9s thermiques du PTFE<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<figure id=\"attachment_13511\" aria-describedby=\"caption-attachment-13511\" style=\"width: 500px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-13511 size-full\" src=\"http:\/\/hansaplas.com\/wp-content\/uploads\/2023\/04\/Figure-2-PTFE-temperature-characteristics.jpg\" alt=\"Caract\u00e9ristiques de temp\u00e9rature du PTFE\" width=\"500\" height=\"350\" \/><figcaption id=\"caption-attachment-13511\" class=\"wp-caption-text\">Caract\u00e9ristiques de temp\u00e9rature du PTFE<\/figcaption><\/figure>\n<h3><span class=\"ez-toc-section\" id=\"Thermal_Stability\"><\/span>Stabilit\u00e9 thermique<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Le PTFE est thermiquement stable.<\/p>\n<p>Sa d\u00e9composition par la chaleur commence \u00e0 se produire \u00e0 des temp\u00e9ratures sup\u00e9rieures \u00e0 400<sup>0<\/sup>C.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Transition_Points\"><\/span>Points de transition<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>La structure mol\u00e9culaire du PTFE change en fonction des variations de temp\u00e9rature. \u00c0 19<sup>0<\/sup>C et 30<sup>0<\/sup>Une transformation cristalline de type C a lieu. Alors qu&#039;\u00e0 la temp\u00e9rature de 327<sup>0<\/sup>C, il y a une d\u00e9coloration de la structure cristalline.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Thermal_Expansion\"><\/span>Dilatation thermique<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Cela varie en fonction des diff\u00e9rentes temp\u00e9ratures et change \u00e9galement relativement en fonction des changements de direction.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Thermal_Conductivity\"><\/span>Conductivit\u00e9 thermique<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Sa faible conductivit\u00e9 thermique fait du PTFE un excellent isolant. Elle peut \u00eatre am\u00e9lior\u00e9e par l&#039;ajout de charges.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Specific_Heat\"><\/span>Chaleur sp\u00e9cifique<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>La quantit\u00e9 de chaleur contenue augmente avec la temp\u00e9rature. Lorsque la temp\u00e9rature est \u00e9lev\u00e9e, la quantit\u00e9 de chaleur contenue dans le PTFE est \u00e9galement \u00e9lev\u00e9e.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Electrical_Properties_of_PTFE\"><\/span>Propri\u00e9t\u00e9s \u00e9lectriques du PTFE<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"Dielectric_strength\"><\/span>Rigidit\u00e9 di\u00e9lectrique<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>L&#039;\u00e9paisseur du PTFE est directement proportionnelle \u00e0 celle du mat\u00e9riau. De m\u00eame, elle diminue avec l&#039;augmentation de la fr\u00e9quence.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Dielectric_Constant_and_Dissipation_Factor\"><\/span>Constante di\u00e9lectrique et facteur de dissipation<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Son facteur de dissipation est tr\u00e8s faible, de 0,0001 \u00e0 0,0003. Il reste constant jusqu&#039;\u00e0 des temp\u00e9ratures de 300 \u00b0C.<sup>0<\/sup>c et une fr\u00e9quence de 109 Hz. Le PTFE a une constante di\u00e9lectrique de 2,1.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Arc_Resistance\"><\/span>R\u00e9sistance \u00e0 l&#039;arc<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>La r\u00e9sistance \u00e0 l&#039;arc est la capacit\u00e9 d&#039;un isolant \u00e0 supporter une haute tension sans former de chemin conducteur le long de sa surface. Le PTFE pr\u00e9sente une bonne r\u00e9sistance de 300 secondes.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Corona_Effect\"><\/span>Effet Corona<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>L&#039;effet Corona est l&#039;ionisation de l&#039;air ambiant d&#039;un conducteur, produisant une lueur et un sifflement. Cet effet provoque une \u00e9rosion de la surface du PTFE.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Optical_Properties_of_PTFE\"><\/span>Propri\u00e9t\u00e9s optiques du PTFE<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<figure id=\"attachment_13512\" aria-describedby=\"caption-attachment-13512\" style=\"width: 500px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-13512 size-full\" src=\"http:\/\/hansaplas.com\/wp-content\/uploads\/2023\/04\/Figure-3-Transluscent-PTFE.jpg\" alt=\"PTFE translucide\" width=\"500\" height=\"350\" \/><figcaption id=\"caption-attachment-13512\" class=\"wp-caption-text\">PTFE translucide<\/figcaption><\/figure>\n<h3><span class=\"ez-toc-section\" id=\"Resistance_of_Light\"><\/span>R\u00e9sistance de la lumi\u00e8re<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Selon certains tests, des \u00e9chantillons expos\u00e9s \u00e0 la lumi\u00e8re solaire pendant plus de 20 ans ne pr\u00e9sentent aucun changement, prouvant ainsi la r\u00e9sistance du PTFE \u00e0 la d\u00e9composition par la lumi\u00e8re solaire.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Resistance_to_Radiation\"><\/span>R\u00e9sistance aux radiations<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Sa faible r\u00e9sistance aux radiations est due \u00e0 sa d\u00e9composition lorsqu&#039;il est expos\u00e9 \u00e0 des radiations de forte intensit\u00e9.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Other_PTFE_Material_Properties\"><\/span>Autres propri\u00e9t\u00e9s du mat\u00e9riau PTFE<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"Plastic_%E2%80%9CMemory%E2%80%9D\"><\/span>\u00ab M\u00e9moire \u00bb en plastique<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Lorsque les mat\u00e9riaux PTFE sont d\u00e9form\u00e9s, ils peuvent conserver leur forme d&#039;origine apr\u00e8s avoir \u00e9t\u00e9 chauff\u00e9s. Le PTFE a une bonne m\u00e9moire plastique.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Gas_Permeability_of_PTFE\"><\/span>Perm\u00e9abilit\u00e9 aux gaz du PTFE<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Il s&#039;agit de la capacit\u00e9 du gaz \u00e0 se diffuser \u00e0 travers un mat\u00e9riau lorsque la pression entre les deux faces est diff\u00e9rente. La perm\u00e9abilit\u00e9 au gaz du PTFE d\u00e9pend de l&#039;\u00e9paisseur, de la pression entre les deux faces et des techniques de travail du mat\u00e9riau PTFE.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Resistant_to_Corrosion_by_Chemical\"><\/span>R\u00e9sistant \u00e0 la corrosion chimique<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Le PTFE n&#039;est pas affect\u00e9 par la plupart des compos\u00e9s et \u00e9l\u00e9ments connus. Il est affect\u00e9 par\u00a0:<\/p>\n<ul>\n<li>M\u00e9taux alcalins \u00e0 l&#039;\u00e9tat \u00e9l\u00e9mentaire<\/li>\n<li>Trifluorure de chlore<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"Solvent_Resistance\"><\/span>R\u00e9sistance aux solvants<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Il ne peut pas se dissoudre dans la plupart des solvants, \u00e0 l&#039;exception des huiles hautement fluor\u00e9es \u00e0 des temp\u00e9ratures sup\u00e9rieures \u00e0 300 \u00b0C.<sup>0<\/sup>C<\/p>\n<h2><span class=\"ez-toc-section\" id=\"How_Additives_Fillers_Affect_PTFE_Material_Properties\"><\/span>Comment les additifs et les charges affectent les propri\u00e9t\u00e9s du PTFE<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<figure id=\"attachment_13513\" aria-describedby=\"caption-attachment-13513\" style=\"width: 500px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-13513 size-full\" src=\"http:\/\/hansaplas.com\/wp-content\/uploads\/2023\/04\/Figure-4-PTFE-gasket.jpg\" alt=\"Joint PTFE\" width=\"500\" height=\"350\" \/><figcaption id=\"caption-attachment-13513\" class=\"wp-caption-text\">Joint PTFE<\/figcaption><\/figure>\n<h3><span class=\"ez-toc-section\" id=\"Glass_Fiber\"><\/span>Fibre de verre<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>R\u00e9duit le taux de fluage, c&#039;est-\u00e0-dire la d\u00e9formation sous l&#039;effet de la pression et du temps. La fibre de verre conf\u00e8re \u00e9galement au PTFE une r\u00e9sistance \u00e0 l&#039;usure et aux produits chimiques, ainsi qu&#039;une bonne r\u00e9sistance aux pressions superficielles \u00e9lev\u00e9es. Utilis\u00e9 dans la fabrication de bagues, de bagues, de raccords filet\u00e9s, etc.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Adding_of_Carbon\"><\/span>Ajout de carbone<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Le carbone doit \u00eatre utilis\u00e9 sous forme de poudre ou de fibre. Il r\u00e9duit le taux de fluage, augmente la conductivit\u00e9 thermique et am\u00e9liore la r\u00e9sistance \u00e0 la compression.<\/p>\n<p>De plus, cela rend le PTFE plus r\u00e9sistant \u00e0 l\u2019usure et plus conducteur d\u2019\u00e9lectricit\u00e9.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Carbon_Combined_with_Graphite\"><\/span>Carbone combin\u00e9 au graphite<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>R\u00e9duit l&#039;usure du PTFE gr\u00e2ce \u00e0 son faible coefficient de frottement. Id\u00e9alement, il assure une lubrification \u00ab\u00a0parfaite\u00a0\u00bb.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Bronze-filled_PTFE_Compound\"><\/span>Compos\u00e9 PTFE charg\u00e9 de bronze<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li>Il en r\u00e9sulte une augmentation de la conductivit\u00e9 thermique<\/li>\n<li>Am\u00e9liore la conductivit\u00e9 \u00e9lectrique<\/li>\n<li>Le rend plus r\u00e9sistant \u00e0 la pression<\/li>\n<li>Il am\u00e9liore les propri\u00e9t\u00e9s de r\u00e9sistance au fluage<\/li>\n<\/ul>\n<p>Il pr\u00e9sente une r\u00e9sistance \u00e9lev\u00e9e au frottement qui peut \u00eatre r\u00e9duite par l&#039;ajout de MoS<sub>2<\/sub>.<\/p>\n<p>Parmi les inconv\u00e9nients, on peut citer une possible oxydation, ainsi qu&#039;une faible r\u00e9sistance chimique.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Molybdenum_MoS2\"><\/span>Molybd\u00e8ne (MoS<sub>2<\/sub>)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Le molybd\u00e8ne a un effet lubrifiant conf\u00e9rant au mat\u00e9riau des propri\u00e9t\u00e9s antifriction.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Calcium_Fluoride_CaF2\"><\/span>Fluorure de calcium (CaF<sub>2<\/sub>)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Utilis\u00e9 comme alternative \u00e0 la fibre de verre lorsque celle-ci ne convient pas en raison de sa r\u00e9sistance chimique. Il est utilis\u00e9 dans la fabrication de joints et d&#039;applications \u00e9lectroniques.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Mica\"><\/span>Mica<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Le mica garantit une dilatation et une r\u00e9traction r\u00e9duites du PTFE. N\u00e9anmoins, ses propri\u00e9t\u00e9s m\u00e9caniques sont limit\u00e9es. Ceci est principalement applicable aux techniques de compression.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Ekonol\"><\/span>\u00c9konol<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>L&#039;Ekonol am\u00e9liore le fonctionnement du PTFE \u00e0 haute temp\u00e9rature et le rend \u00e9galement r\u00e9sistant \u00e0 l&#039;usure, notamment sur les surfaces de comptoir en acier. Le PTFE est donc id\u00e9al pour les applications rotatives, alimentaires et les applications avec des surfaces de comptoir souples.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Wollastonite\"><\/span>Wollastonite<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>La wollastonite a des propri\u00e9t\u00e9s similaires \u00e0 celles de la fibre de verre, mais elle est applicable aux aliments et \u00e9galement moins abrasive.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Conclusion\"><\/span>Conclusion<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Comme vous pouvez le constater, ses propri\u00e9t\u00e9s sup\u00e9rieures font du PTFE un choix id\u00e9al pour de nombreuses applications. Mieux encore, il est \u00e9galement possible de modifier le PTFE pour obtenir des propri\u00e9t\u00e9s sup\u00e9rieures, quelle que soit l&#039;application.<\/p>\n<p>Pour toutes vos tiges PTFE, feuilles PTFE ou PTFE vierge, contactez-nous d\u00e8s maintenant.<\/p>\n<p><strong>Plus de ressources<\/strong>:<\/p>\n<p><a href=\"https:\/\/www.sciencedirect.com\/topics\/earth-and-planetary-sciences\/polytetrafluoroethylene\">Polyt\u00e9trafluoro\u00e9thyl\u00e8ne<\/a> \u2013 Source : Science Direct<\/p>\n<p><a href=\"https:\/\/hansaplas.com\/fr\/applications-du-ptfe\/\">Applications du PTFE<\/a> \u2013 Source : Hansa<\/p>\n<p><a href=\"https:\/\/en.wikipedia.org\/wiki\/Polytetrafluoroethylene\">PTFE<\/a> \u2013 Source : Wikip\u00e9dia<\/p>\n<p><a href=\"https:\/\/hansaplas.com\/fr\/ptfe-manufacturing-process\/\">Proc\u00e9d\u00e9 de fabrication du PTFE<\/a> \u2013 Source : Hansa<\/p>","protected":false},"excerpt":{"rendered":"<p>PTFE is a unique material with fluorine and carbon atoms. Usually, the material is hydrophobic, non-sticky, non-reactive, has a high density, and is resistant to [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":13539,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"default","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"default","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1],"tags":[],"class_list":["post-13509","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>What is the PTFE Properties - The Ultimate Guide - Hansa<\/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:\/\/hansaplas.com\/fr\/proprietes-du-ptfe\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What is the PTFE Properties - The Ultimate Guide - Hansa\" \/>\n<meta property=\"og:description\" content=\"PTFE is a unique material with fluorine and carbon atoms. 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