{"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":"quais-sao-as-propriedades-do-ptfe-o-guia-definitivo","status":"publish","type":"post","link":"https:\/\/hansaplas.com\/pt\/propriedades-do-ptfe\/","title":{"rendered":"O que s\u00e3o as propriedades do PTFE \u2013 O guia definitivo"},"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=\"Propriedades do 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>O PTFE \u00e9 um material \u00fanico com \u00e1tomos de fl\u00faor e carbono. Geralmente, o material \u00e9 hidrof\u00f3bico, n\u00e3o pegajoso, n\u00e3o reativo, possui alta densidade e \u00e9 resistente a altas temperaturas.<\/p>\n<p>Isso o torna uma escolha perfeita para muitas aplica\u00e7\u00f5es<\/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\/pt\/propriedades-do-ptfe\/#PTFE_Mechanical_Properties\" >Propriedades mec\u00e2nicas do 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\/pt\/propriedades-do-ptfe\/#Tensile_and_Compressive_Properties\" >Propriedades de tra\u00e7\u00e3o e compress\u00e3o.<\/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\/pt\/propriedades-do-ptfe\/#Flexibility\" >Flexibilidade<\/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\/pt\/propriedades-do-ptfe\/#Hardness_of_PTFE\" >Dureza do 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\/pt\/propriedades-do-ptfe\/#Coefficient_of_Friction\" >Coeficiente de atrito<\/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\/pt\/propriedades-do-ptfe\/#Wear_Properties\" >Propriedades de desgaste<\/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\/pt\/propriedades-do-ptfe\/#Physical_Properties\" >Propriedades f\u00edsicas<\/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\/pt\/propriedades-do-ptfe\/#PTFE_Thermal_Properties\" >Propriedades t\u00e9rmicas do 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\/pt\/propriedades-do-ptfe\/#Thermal_Stability\" >Estabilidade t\u00e9rmica<\/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\/pt\/propriedades-do-ptfe\/#Transition_Points\" >Pontos de Transi\u00e7\u00e3o<\/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\/pt\/propriedades-do-ptfe\/#Thermal_Expansion\" >Expans\u00e3o T\u00e9rmica<\/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\/pt\/propriedades-do-ptfe\/#Thermal_Conductivity\" >Condutividade t\u00e9rmica<\/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\/pt\/propriedades-do-ptfe\/#Specific_Heat\" >Calor espec\u00edfico<\/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\/pt\/propriedades-do-ptfe\/#Electrical_Properties_of_PTFE\" >Propriedades el\u00e9tricas do 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\/pt\/propriedades-do-ptfe\/#Dielectric_strength\" >Rigidez diel\u00e9trica<\/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\/pt\/propriedades-do-ptfe\/#Dielectric_Constant_and_Dissipation_Factor\" >Constante Diel\u00e9trica e Fator de Dissipa\u00e7\u00e3o<\/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\/pt\/propriedades-do-ptfe\/#Arc_Resistance\" >Resist\u00eancia ao arco<\/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\/pt\/propriedades-do-ptfe\/#Corona_Effect\" >Efeito 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\/pt\/propriedades-do-ptfe\/#Optical_Properties_of_PTFE\" >Propriedades \u00f3pticas do 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\/pt\/propriedades-do-ptfe\/#Resistance_of_Light\" >Resist\u00eancia da Luz<\/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\/pt\/propriedades-do-ptfe\/#Resistance_to_Radiation\" >Resist\u00eancia \u00e0 radia\u00e7\u00e3o<\/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\/pt\/propriedades-do-ptfe\/#Other_PTFE_Material_Properties\" >Outras propriedades do material 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\/pt\/propriedades-do-ptfe\/#Plastic_%E2%80%9CMemory%E2%80%9D\" >\u201cMem\u00f3ria\u201d de pl\u00e1stico<\/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\/pt\/propriedades-do-ptfe\/#Gas_Permeability_of_PTFE\" >Permeabilidade ao g\u00e1s do 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\/pt\/propriedades-do-ptfe\/#Resistant_to_Corrosion_by_Chemical\" >Resistente \u00e0 corros\u00e3o por agentes qu\u00edmicos<\/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\/pt\/propriedades-do-ptfe\/#Solvent_Resistance\" >Resist\u00eancia a solventes<\/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\/pt\/propriedades-do-ptfe\/#How_Additives_Fillers_Affect_PTFE_Material_Properties\" >Como aditivos e enchimentos afetam as propriedades do material 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\/pt\/propriedades-do-ptfe\/#Glass_Fiber\" >Fibra de vidro<\/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\/pt\/propriedades-do-ptfe\/#Adding_of_Carbon\" >Adi\u00e7\u00e3o de Carbono<\/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\/pt\/propriedades-do-ptfe\/#Carbon_Combined_with_Graphite\" >Carbono combinado com grafite<\/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\/pt\/propriedades-do-ptfe\/#Bronze-filled_PTFE_Compound\" >Composto de PTFE com carga 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\/pt\/propriedades-do-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\/pt\/propriedades-do-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\/pt\/propriedades-do-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\/pt\/propriedades-do-ptfe\/#Ekonol\" >Ekonol<\/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\/pt\/propriedades-do-ptfe\/#Wollastonite\" >Wollastonita<\/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\/pt\/propriedades-do-ptfe\/#Conclusion\" >Conclus\u00e3o<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"PTFE_Mechanical_Properties\"><\/span>Propriedades mec\u00e2nicas do 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>Propriedades de tra\u00e7\u00e3o e compress\u00e3o.<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Ela varia de 10 Mpa a 35-40 Mpa. Isso depende do enchimento utilizado, dos par\u00e2metros de moldagem e tamb\u00e9m da qualidade da resina base.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Flexibility\"><\/span>Flexibilidade<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>O m\u00f3dulo de flex\u00e3o difere de acordo com diferentes temperaturas ambientes, conforme mostrado abaixo.<\/p>\n<table>\n<tbody>\n<tr>\n<td width=\"308\">Temperatura<\/td>\n<td width=\"308\">M\u00f3dulo de Flex\u00e3o<\/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\">200N\/mm2<\/td>\n<\/tr>\n<tr>\n<td width=\"308\">260<sup>0<\/sup>C.<\/td>\n<td width=\"308\">45N\/mm2<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3><span class=\"ez-toc-section\" id=\"Hardness_of_PTFE\"><\/span>Dureza do PTFE<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<table>\n<tbody>\n<tr>\n<td width=\"308\">M\u00e9todo de Medi\u00e7\u00e3o<\/td>\n<td width=\"308\">Valor<\/td>\n<\/tr>\n<tr>\n<td width=\"308\">ASTMD 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>Coeficiente de atrito<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<div class=\"ast-oembed-container\" style=\"height: 100%;\"><iframe loading=\"lazy\" title=\"O que \u00e9 politetrafluoretileno (PTFE, Teflon) e para que ele \u00e9 utilizado?\" 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>Baixo coeficiente de atrito, variando de 0,05 a 0,09. Geralmente \u00e9 constante \u00e0 temperatura ambiente.<\/p>\n<p>Entretanto, o coeficiente de atrito muda de acordo com os seguintes fatores:<\/p>\n<ol>\n<li>Aumentar a carga de um objeto que desliza na superf\u00edcie do PTFE diminuir\u00e1 o coeficiente de atrito.<\/li>\n<li>Aumenta com o aumento da velocidade do objeto deslizante.<\/li>\n<\/ol>\n<h3><span class=\"ez-toc-section\" id=\"Wear_Properties\"><\/span>Propriedades de desgaste<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Isso depende da superf\u00edcie dos materiais que deslizam com o PTFE e tamb\u00e9m da velocidade de deslizamento e das cargas dos materiais. Normalmente, isso torna o PTFE muito pouco resistente ao desgaste, tornando-o adequado apenas para cargas mais leves, mas n\u00e3o para cargas pesadas.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Physical_Properties\"><\/span>Propriedades f\u00edsicas<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>As principais propriedades f\u00edsicas incluem:<\/p>\n<ul>\n<li>03% absor\u00e7\u00e3o m\u00e1xima de \u00e1gua<\/li>\n<li>36 a 0,91 g\/cc de densidade aparente<\/li>\n<li>01 a 0,058 de contra\u00e7\u00e3o linear<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"PTFE_Thermal_Properties\"><\/span>Propriedades t\u00e9rmicas do 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=\"Caracter\u00edsticas de temperatura do PTFE\" width=\"500\" height=\"350\" \/><figcaption id=\"caption-attachment-13511\" class=\"wp-caption-text\">Caracter\u00edsticas de temperatura do PTFE<\/figcaption><\/figure>\n<h3><span class=\"ez-toc-section\" id=\"Thermal_Stability\"><\/span>Estabilidade t\u00e9rmica<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>O PTFE \u00e9 termicamente est\u00e1vel.<\/p>\n<p>A decomposi\u00e7\u00e3o pelo calor come\u00e7a a ocorrer em temperaturas acima de 400<sup>0<\/sup>C.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Transition_Points\"><\/span>Pontos de Transi\u00e7\u00e3o<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>A estrutura molecular do PTFE muda de acordo com a mudan\u00e7a de temperatura. A 19<sup>0<\/sup>C e 30<sup>0<\/sup>A transforma\u00e7\u00e3o do cristal C ocorre. Enquanto na temperatura 327<sup>0<\/sup>C, h\u00e1 desbotamento da estrutura cristalina.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Thermal_Expansion\"><\/span>Expans\u00e3o T\u00e9rmica<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Isso varia com diferentes temperaturas e tamb\u00e9m muda relativamente de acordo com mudan\u00e7as de dire\u00e7\u00e3o.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Thermal_Conductivity\"><\/span>Condutividade t\u00e9rmica<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>A condutividade t\u00e9rmica \u00e9 baixa, tornando o PTFE um bom material isolante. Ela pode ser aumentada com a adi\u00e7\u00e3o de enchimentos.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Specific_Heat\"><\/span>Calor espec\u00edfico<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>A quantidade de calor contido aumenta com a temperatura. Quando a temperatura \u00e9 alta, o calor contido no material PTFE tamb\u00e9m aumenta.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Electrical_Properties_of_PTFE\"><\/span>Propriedades el\u00e9tricas do PTFE<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"Dielectric_strength\"><\/span>Rigidez diel\u00e9trica<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>A espessura do PTFE \u00e9 diretamente proporcional \u00e0 espessura do material. Da mesma forma, ela tamb\u00e9m diminui com o aumento da frequ\u00eancia.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Dielectric_Constant_and_Dissipation_Factor\"><\/span>Constante Diel\u00e9trica e Fator de Dissipa\u00e7\u00e3o<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Possui um fator de dissipa\u00e7\u00e3o muito baixo de 0,0001 a 0,0003. Este permanece constante at\u00e9 temperaturas de 300<sup>0<\/sup>c e uma frequ\u00eancia de 109 Hz. O PTFE tem uma constante diel\u00e9trica de 2,1.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Arc_Resistance\"><\/span>Resist\u00eancia ao arco<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>A resist\u00eancia ao arco \u00e9 a capacidade de um isolante suportar alta tens\u00e3o sem formar um caminho condutor ao longo de sua superf\u00edcie. O PTFE possui boa resist\u00eancia de 300 s.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Corona_Effect\"><\/span>Efeito Corona<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>O efeito corona \u00e9 a ioniza\u00e7\u00e3o do ar ao redor de um condutor, que produz um brilho e um chiado. O efeito corona causa algumas eros\u00f5es na superf\u00edcie do PTFE.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Optical_Properties_of_PTFE\"><\/span>Propriedades \u00f3pticas do 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 transl\u00facido\" width=\"500\" height=\"350\" \/><figcaption id=\"caption-attachment-13512\" class=\"wp-caption-text\">PTFE transl\u00facido<\/figcaption><\/figure>\n<h3><span class=\"ez-toc-section\" id=\"Resistance_of_Light\"><\/span>Resist\u00eancia da Luz<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>De acordo com alguns testes, amostras expostas \u00e0 luz solar por mais de 20 anos n\u00e3o apresentaram altera\u00e7\u00f5es. Comprovando assim que o PTFE \u00e9 resistente \u00e0 decomposi\u00e7\u00e3o pela luz solar.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Resistance_to_Radiation\"><\/span>Resist\u00eancia \u00e0 radia\u00e7\u00e3o<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Possui baixa resist\u00eancia \u00e0 radia\u00e7\u00e3o. Isso se deve \u00e0 sua decomposi\u00e7\u00e3o quando exposto a radia\u00e7\u00e3o de alta intensidade.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Other_PTFE_Material_Properties\"><\/span>Outras propriedades do material 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>\u201cMem\u00f3ria\u201d de pl\u00e1stico<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Quando os materiais de PTFE s\u00e3o deformados, eles conseguem manter sua forma original ap\u00f3s serem aquecidos. O PTFE tem boa mem\u00f3ria pl\u00e1stica.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Gas_Permeability_of_PTFE\"><\/span>Permeabilidade ao g\u00e1s do PTFE<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Trata-se da capacidade do g\u00e1s de se difundir atrav\u00e9s de um material quando a press\u00e3o entre ambos os lados \u00e9 diferente. A permeabilidade ao g\u00e1s do PTFE depende da espessura, da press\u00e3o entre ambos os lados e das t\u00e9cnicas de trabalho do material PTFE.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Resistant_to_Corrosion_by_Chemical\"><\/span>Resistente \u00e0 corros\u00e3o por agentes qu\u00edmicos<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>O PTFE n\u00e3o \u00e9 afetado pela maioria dos compostos e elementos conhecidos. Ele \u00e9 afetado por:<\/p>\n<ul>\n<li>Metais alcalinos no estado elementar<\/li>\n<li>Trifluoreto de cloro<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"Solvent_Resistance\"><\/span>Resist\u00eancia a solventes<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>N\u00e3o pode dissolver na maioria dos solventes, exceto em \u00f3leos altamente fluorados em temperaturas acima de 300<sup>0<\/sup>C<\/p>\n<h2><span class=\"ez-toc-section\" id=\"How_Additives_Fillers_Affect_PTFE_Material_Properties\"><\/span>Como aditivos e enchimentos afetam as propriedades do material 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=\"Junta de PTFE\" width=\"500\" height=\"350\" \/><figcaption id=\"caption-attachment-13513\" class=\"wp-caption-text\">Junta de PTFE<\/figcaption><\/figure>\n<h3><span class=\"ez-toc-section\" id=\"Glass_Fiber\"><\/span>Fibra de vidro<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Reduz a taxa de flu\u00eancia, que \u00e9 a deforma\u00e7\u00e3o quando submetida \u00e0 press\u00e3o e ao tempo. A fibra de vidro tamb\u00e9m torna o PTFE resistente ao desgaste, quimicamente resistente e adequado para press\u00f5es superficiais mais elevadas. Utilizado na fabrica\u00e7\u00e3o de an\u00e9is, buchas, conex\u00f5es roscadas, etc.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Adding_of_Carbon\"><\/span>Adi\u00e7\u00e3o de Carbono<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>O carbono deve ser usado na forma de p\u00f3 ou fibra. Ele reduz a taxa de flu\u00eancia, resulta em aumento da condutividade t\u00e9rmica e melhora a resist\u00eancia \u00e0 compress\u00e3o.<\/p>\n<p>Al\u00e9m disso, torna o PTFE mais resistente ao desgaste e eletricamente condutivo.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Carbon_Combined_with_Graphite\"><\/span>Carbono combinado com grafite<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Reduz o desgaste do PTFE devido ao baixo coeficiente de atrito. Idealmente, proporciona uma lubrifica\u00e7\u00e3o &quot;perfeita&quot;.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Bronze-filled_PTFE_Compound\"><\/span>Composto de PTFE com carga de bronze<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li>Resulta em um aumento na condutividade t\u00e9rmica<\/li>\n<li>Melhora a condutividade el\u00e9trica<\/li>\n<li>Torna-o mais resistente \u00e0 press\u00e3o<\/li>\n<li>Melhora as propriedades de resist\u00eancia \u00e0 flu\u00eancia<\/li>\n<\/ul>\n<p>Possui alta resist\u00eancia ao atrito que pode ser reduzida pela adi\u00e7\u00e3o de MoS<sub>2<\/sub>.<\/p>\n<p>Algumas desvantagens incluem poss\u00edvel oxida\u00e7\u00e3o, al\u00e9m de baixa resist\u00eancia qu\u00edmica.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Molybdenum_MoS2\"><\/span>Molibd\u00eanio (MoS<sub>2<\/sub>)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>O molibd\u00eanio tem um efeito lubrificante, fazendo com que o material tenha propriedades antifric\u00e7\u00e3o.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Calcium_Fluoride_CaF2\"><\/span>Fluoreto de c\u00e1lcio (CaF<sub>2<\/sub>)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Usado como alternativa \u00e0 fibra de vidro, caso o vidro n\u00e3o seja adequado devido \u00e0 sua resist\u00eancia qu\u00edmica. \u00c9 utilizado na fabrica\u00e7\u00e3o de juntas e aplica\u00e7\u00f5es eletr\u00f4nicas.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Mica\"><\/span>Mica<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>A mica garante que o PTFE expanda e contraia menos. No entanto, a mica possui propriedades mec\u00e2nicas limitadas. Isso se aplica principalmente a t\u00e9cnicas de compress\u00e3o.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Ekonol\"><\/span>Ekonol<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>O Ekonol faz com que o PTFE funcione melhor em temperaturas mais altas, al\u00e9m de torn\u00e1-lo resistente ao desgaste e ao desgaste em materiais de bancada de a\u00e7o. Isso torna o PTFE aplic\u00e1vel em aplica\u00e7\u00f5es rotativas, aliment\u00edcias e com materiais de bancada macios.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Wollastonite\"><\/span>Wollastonita<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>A wollastonita tem propriedades semelhantes \u00e0s da fibra de vidro, mas \u00e9 aplic\u00e1vel em alimentos e tamb\u00e9m menos abrasiva.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Conclusion\"><\/span>Conclus\u00e3o<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Como voc\u00ea pode ver, as propriedades superiores fazem do PTFE a escolha perfeita para diversas aplica\u00e7\u00f5es. E o melhor de tudo: voc\u00ea tamb\u00e9m pode modificar o PTFE para obter propriedades superiores para qualquer aplica\u00e7\u00e3o.<\/p>\n<p>Para todas as suas hastes de PTFE, folhas de PTFE ou PTFE virgem, entre em contato conosco agora.<\/p>\n<p><strong>Mais recursos<\/strong>:<\/p>\n<p><a href=\"https:\/\/www.sciencedirect.com\/topics\/earth-and-planetary-sciences\/polytetrafluoroethylene\">Politetrafluoroetileno<\/a> \u2013 Fonte: Science Direct<\/p>\n<p><a href=\"https:\/\/hansaplas.com\/pt\/aplicacoes-de-ptfe\/\">Aplica\u00e7\u00f5es de PTFE<\/a> \u2013 Fonte: Hansa<\/p>\n<p><a href=\"https:\/\/en.wikipedia.org\/wiki\/Polytetrafluoroethylene\">PTFE<\/a> \u2013 Fonte: Wikip\u00e9dia<\/p>\n<p><a href=\"https:\/\/hansaplas.com\/pt\/ptfe-manufacturing-process\/\">Processo de fabrica\u00e7\u00e3o de PTFE<\/a> \u2013 Fonte: 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 v27.3 - 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\/pt\/propriedades-do-ptfe\/\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\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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