{"id":9758,"date":"2026-01-15T15:30:28","date_gmt":"2026-01-15T07:30:28","guid":{"rendered":"https:\/\/www.cncmachiningshops.com\/?p=9758"},"modified":"2026-01-05T14:44:20","modified_gmt":"2026-01-05T06:44:20","slug":"peek-plastic","status":"publish","type":"post","link":"https:\/\/www.cncmachiningshops.com\/fr\/peek-plastic\/","title":{"rendered":"Tout savoir sur le PEEK : propri\u00e9t\u00e9s, applications, usinage et recommandations de conception"},"content":{"rendered":"<div data-page-id=\"AaLQdK4WroqfP8xIwowcoV58nbc\" data-lark-html-role=\"root\" data-docx-has-block-data=\"true\">\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Poly\u00e9ther\u00e9therc\u00e9tone (PEEK)<\/span><\/strong><span class=\"ng-star-inserted\"> Le PEEK est reconnu comme l'un des meilleurs thermoplastiques techniques disponibles sur le march\u00e9. Contrairement aux plastiques classiques, il offre d'excellentes performances dans des conditions extr\u00eames. Il se caract\u00e9rise par une r\u00e9sistance m\u00e9canique \u00e9lev\u00e9e, une grande stabilit\u00e9 thermique et une large r\u00e9sistance chimique. Ces propri\u00e9t\u00e9s uniques font du PEEK le choix id\u00e9al pour les applications exigeantes qui n\u00e9cessitent de remplacer le m\u00e9tal, d'all\u00e9ger les composants ou d'assurer une plus grande long\u00e9vit\u00e9 dans des conditions difficiles.<\/span><\/p>\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">D'un point de vue technique, le PEEK pr\u00e9sente trois caract\u00e9ristiques principales : il peut supporter des temp\u00e9ratures de service allant jusqu'\u00e0 environ 250 \u00b0C, il est tr\u00e8s rigide et r\u00e9sistant \u00e0 la fatigue, et il ne r\u00e9agit pas avec la plupart des produits chimiques industriels. Ces propri\u00e9t\u00e9s lui permettent de se substituer aux m\u00e9taux dans les pi\u00e8ces a\u00e9rospatiales, les implants m\u00e9dicaux et les machines hautes performances. Cet article constitue un guide technique complet sur le PEEK. Il aborde ses propri\u00e9t\u00e9s mat\u00e9rielles, son comportement au niveau microstructural, ainsi que les principales strat\u00e9gies de conception et d'usinage permettant d'en tirer le meilleur parti.<\/span><\/p>\n<h2 class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Qu'est-ce que le PEEK ? D\u00e9finition et structure polym\u00e8re<\/span><\/h2>\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Lorsque les ing\u00e9nieurs demandent : \u201c Qu'est-ce que le PEEK ? \u201d, la r\u00e9ponse technique est qu'il s'agit d'un thermoplastique semi-cristallin appartenant \u00e0 la famille des PAEK (polyaryl\u00e9therc\u00e9tones). Il a \u00e9t\u00e9 con\u00e7u pour \u00eatre utilis\u00e9 dans des environnements o\u00f9 les plastiques classiques, tels que l'ABS ou le nylon, se d\u00e9graderaient sous l'effet de la chaleur, du poids ou des produits chimiques.<\/span><\/p>\n<h3 class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">La famille des PAEK et la structure semi-cristalline<\/span><\/h3>\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">C'est sa structure mol\u00e9culaire rigide, constitu\u00e9e de cycles aromatiques r\u00e9p\u00e9titifs reli\u00e9s par des liaisons \u00e9ther (\u2013O\u2013) et c\u00e9tone (\u2013CO\u2013), qui fait du PEEK ce qu'il est. C'est sa nature semi-cristalline qui lui conf\u00e8re ses propri\u00e9t\u00e9s :<\/span><\/p>\n<ul class=\"ng-star-inserted\">\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">R\u00e9gions cristallines :<\/span><\/strong><span class=\"ng-star-inserted\"> Conf\u00e8re au mat\u00e9riau sa r\u00e9sistance m\u00e9canique, sa rigidit\u00e9, sa r\u00e9sistance \u00e0 l'usure et sa stabilit\u00e9 \u00e0 haute temp\u00e9rature.<\/span><\/p>\n<\/li>\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">R\u00e9gions amorphes :<\/span><\/strong><span class=\"ng-star-inserted\"> Ajouter la r\u00e9sistance, la capacit\u00e9 \u00e0 absorber les chocs et la facilit\u00e9 de mise en \u0153uvre.<\/span><\/p>\n<\/li>\n<\/ul>\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Gr\u00e2ce \u00e0 cette structure biphas\u00e9e, le PEEK conserve sa forme m\u00eame lorsqu'il est soumis \u00e0 des contraintes importantes et \u00e0 une chaleur intense pendant une longue p\u00e9riode. Il r\u00e9siste bien mieux au fluage et \u00e0 la fatigue que les plastiques amorphes.<\/span><\/p>\n<h3 class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Le PEEK compar\u00e9 \u00e0 d'autres plastiques techniques courants<\/span><\/h3>\n<div class=\"table-container ng-star-inserted\">\n<table>\n<tbody>\n<tr class=\"table-header ng-star-inserted\">\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Propri\u00e9t\u00e9<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Plastique PEEK<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">abdos<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Nylon (PA66)<\/span><\/td>\n<\/tr>\n<tr class=\"ng-star-inserted\">\n<td class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Stabilit\u00e9 thermique<\/span><\/strong><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Jusqu'\u00e0 environ 250 \u00b0C en fonctionnement continu<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">environ 90 \u00e0 100 \u00b0C<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">environ 80 \u00e0 120 \u00b0C<\/span><\/td>\n<\/tr>\n<tr class=\"ng-star-inserted\">\n<td class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">R\u00e9sistance m\u00e9canique<\/span><\/strong><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Tr\u00e8s \u00e9lev\u00e9<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Mod\u00e9r\u00e9<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Mod\u00e9r\u00e9 \u00e0 \u00e9lev\u00e9<\/span><\/td>\n<\/tr>\n<tr class=\"ng-star-inserted\">\n<td class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Stabilit\u00e9 dimensionnelle<\/span><\/strong><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Excellent<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Bon<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Sensible \u00e0 l'humidit\u00e9<\/span><\/td>\n<\/tr>\n<tr class=\"ng-star-inserted\">\n<td class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">R\u00e9sistance chimique<\/span><\/strong><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Tr\u00e8s bien<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Pas terrible<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">C'est pas mal<\/span><\/td>\n<\/tr>\n<tr class=\"ng-star-inserted\">\n<td class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Structure<\/span><\/strong><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Semi-cristallin<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Amorphe<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Semi-cristallin<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Les enseignements \u00e0 tirer en mati\u00e8re d'ing\u00e9nierie :<\/span><\/strong><span class=\"ng-star-inserted\"> C'est gr\u00e2ce \u00e0 sa structure aromatique semi-cristalline que le PEEK est capable de bien se comporter \u00e0 haute temp\u00e9rature tout en r\u00e9sistant aux produits chimiques. C'est pourquoi il offre de meilleures performances que les plastiques techniques classiques dans certaines applications cl\u00e9s.<\/span><\/p>\n<h2 class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Propri\u00e9t\u00e9s m\u00e9caniques, thermiques, chimiques et \u00e9lectriques du PEEK<\/span><\/h2>\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Le PEEK offre de meilleures performances que la quasi-totalit\u00e9 des autres thermoplastiques. On le choisit lorsque des exigences m\u00e9caniques, thermiques et chimiques doivent \u00eatre satisfaites simultan\u00e9ment.<\/span><\/p>\n<h3 class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Gammes de propri\u00e9t\u00e9s fondamentales<\/span><\/h3>\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">N'oubliez pas que ces valeurs varient en fonction de la classe de r\u00e9sistance et du type d'armature.<\/span><\/p>\n<div class=\"table-container ng-star-inserted\">\n<table>\n<tbody>\n<tr class=\"table-header ng-star-inserted\">\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Propri\u00e9t\u00e9<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Plage normale<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Signification en ing\u00e9nierie<\/span><\/td>\n<\/tr>\n<tr class=\"ng-star-inserted\">\n<td class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">R\u00e9sistance \u00e0 la traction<\/span><\/strong><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">90 \u00e0 100 MPa (sans charge)<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Les \u00e9l\u00e9ments structurels peuvent supporter un poids important.<\/span><\/td>\n<\/tr>\n<tr class=\"ng-star-inserted\">\n<td class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">R\u00e9sistance \u00e0 la flexion<\/span><\/strong><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">150 \u00e0 180 MPa<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Tr\u00e8s rigide lorsqu'on le plie.<\/span><\/td>\n<\/tr>\n<tr class=\"ng-star-inserted\">\n<td class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Module d'\u00e9lasticit\u00e9<\/span><\/strong><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">3,6\u20134,1 GPa (non rempli)<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Rigidit\u00e9 comparable \u00e0 celle de l'os ; nettement sup\u00e9rieure avec la fibre de verre.<\/span><\/td>\n<\/tr>\n<tr class=\"ng-star-inserted\">\n<td class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Transition vitreuse (Tg)<\/span><\/strong><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">)<\/span><\/strong><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">~143 \u00b0C<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">C'est \u00e0 ce moment-l\u00e0 que le module commence \u00e0 diminuer (ramollissement).<\/span><\/td>\n<\/tr>\n<tr class=\"ng-star-inserted\">\n<td class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Point de fusion<\/span><\/strong><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">~343 \u00b0C<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Il peut supporter une forte chaleur pendant un court instant.<\/span><\/td>\n<\/tr>\n<tr class=\"ng-star-inserted\">\n<td class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Service continu<\/span><\/strong><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">250 \u00b0C (UL 746B)<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Assure le bon fonctionnement m\u00e9canique dans les zones soumises \u00e0 des temp\u00e9ratures \u00e9lev\u00e9es.<\/span><\/td>\n<\/tr>\n<tr class=\"ng-star-inserted\">\n<td class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">R\u00e9sistance chimique<\/span><\/strong><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Tr\u00e8s bien<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Il ne se d\u00e9compose pas en acides, bases, hydrocarbures, ni par hydrolyse.<\/span><\/td>\n<\/tr>\n<tr class=\"ng-star-inserted\">\n<td class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">R\u00e9sistivit\u00e9 \u00e9lectrique<\/span><\/strong><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">&gt;10\u00b9\u2074 \u03a9\u00b7cm<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Un bon isolant pour les pi\u00e8ces n\u00e9cessitant une tension \u00e9lev\u00e9e.<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h3 class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">1. Son bon fonctionnement sur le plan m\u00e9canique<\/span><\/h3>\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Le PEEK pr\u00e9sente une r\u00e9sistance et une rigidit\u00e9 \u00e9lev\u00e9es, qu\u2019il conserve m\u00eame \u00e0 haute temp\u00e9rature. Contrairement au nylon (&lt;0,51 TP17T), il n\u2019absorbe pas l\u2019humidit\u00e9 ; ses propri\u00e9t\u00e9s m\u00e9caniques restent donc inchang\u00e9es m\u00eame en milieu humide.<\/span><\/p>\n<h3 class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">2. Son efficacit\u00e9 par temps chaud<\/span><\/h3>\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Le PEEK est l'un des rares plastiques capables de r\u00e9sister aux proc\u00e9d\u00e9s de soudure et aux conditions de fonctionnement sous le capot d'un v\u00e9hicule sans fondre ni se d\u00e9grader. Il peut supporter des temp\u00e9ratures de 250 \u00b0C pendant de longues p\u00e9riodes et des pics de temp\u00e9rature sup\u00e9rieurs \u00e0 300 \u00b0C pendant de courtes dur\u00e9es.<\/span><\/p>\n<h3 class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">3. Performances en mati\u00e8re de produits chimiques et d'\u00e9lectricit\u00e9<\/span><\/h3>\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">La plupart des produits chimiques organiques et inorganiques, y compris la vapeur et l'eau chaude, n'ont aucun effet sur le PEEK (r\u00e9sistance \u00e0 l'hydrolyse). C'est \u00e9galement un excellent isolant \u00e9lectrique dot\u00e9 d'une rigidit\u00e9 di\u00e9lectrique \u00e9lev\u00e9e, ce qui le rend id\u00e9al pour une utilisation dans les semi-conducteurs et les connecteurs.<\/span><\/p>\n<h2 class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Microstructure et principe de fonctionnement<\/span><\/h2>\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Pourquoi le PEEK est-il si performant ? C'est gr\u00e2ce \u00e0 sa cha\u00eene mol\u00e9culaire rigide et \u00e0 sa structure semi-cristalline.<\/span><\/p>\n<ul class=\"ng-star-inserted\">\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Cristallinit\u00e9 et rigidit\u00e9 :<\/span><\/strong><span class=\"ng-star-inserted\"> Les domaines cristallins agissent comme des liaisons transversales physiques qui emp\u00eachent les cha\u00eenes polym\u00e8res de glisser les unes sur les autres lorsqu'elles sont soumises \u00e0 une contrainte. Cela rend le mat\u00e9riau tr\u00e8s r\u00e9sistant au fluage.<\/span><\/p>\n<\/li>\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Endurance \u00e0 la fatigue :<\/span><\/strong><span class=\"ng-star-inserted\"> Le PEEK r\u00e9siste mieux aux contraintes que les m\u00e9taux et les autres plastiques, car il comporte \u00e0 la fois des zones cristallines et amorphes qui agissent de concert pour dissiper l'\u00e9nergie des contraintes.<\/span><\/p>\n<\/li>\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Rigidit\u00e9 de la cha\u00eene :<\/span><\/strong><span class=\"ng-star-inserted\"> Les cycles aromatiques pr\u00e9sents dans la cha\u00eene principale emp\u00eachent les mol\u00e9cules de tourner, ce qui contribue \u00e0 la stabilit\u00e9 du mat\u00e9riau \u00e0 haute temp\u00e9rature et lui conf\u00e8re un module \u00e9lev\u00e9.<\/span><\/p>\n<\/li>\n<\/ul>\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Les enseignements \u00e0 tirer en mati\u00e8re d'ing\u00e9nierie :<\/span><\/strong><span class=\"ng-star-inserted\"> Le fonctionnement du PEEK tient \u00e0 sa microstructure. Cette connaissance permet aux ing\u00e9nieurs d'anticiper son comportement : il est rigide, stable et r\u00e9sistant, mais doit \u00eatre mis en \u0153uvre \u00e0 haute temp\u00e9rature pour \u00eatre correctement mis en forme.<\/span><\/p>\n<h2 class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Diff\u00e9rents types de plastique PEEK et de PEEK renforc\u00e9<\/span><\/h2>\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Il est tr\u00e8s important de choisir la bonne nuance de PEEK pour obtenir le meilleur rapport performances\/prix.<\/span><\/p>\n<h3 class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">1. PEEK non charg\u00e9 (vierge)<\/span><\/h3>\n<ul class=\"ng-star-inserted\">\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Caract\u00e9ristiques :<\/span><\/strong><span class=\"ng-star-inserted\"> Excellente t\u00e9nacit\u00e9 et allongement ; tr\u00e8s bonne r\u00e9sistance aux produits chimiques.<\/span><\/p>\n<\/li>\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Id\u00e9al pour :<\/span><\/strong><span class=\"ng-star-inserted\"> Joints, implants m\u00e9dicaux et pi\u00e8ces devant \u00eatre purs et souples.<\/span><\/p>\n<\/li>\n<\/ul>\n<h3 class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">2. PEEK renforc\u00e9 de fibres de verre (30% GF)<\/span><\/h3>\n<ul class=\"ng-star-inserted\">\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Caract\u00e9ristiques :<\/span><\/strong><span class=\"ng-star-inserted\"> Une rigidit\u00e9, une r\u00e9sistance et une stabilit\u00e9 dimensionnelle accrues ; une dilatation thermique r\u00e9duite.<\/span><\/p>\n<\/li>\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Id\u00e9al pour :<\/span><\/strong><span class=\"ng-star-inserted\"> Pi\u00e8ces devant r\u00e9sister \u00e0 des charges statiques \u00e9lev\u00e9es, isolateurs et \u00e9l\u00e9ments structurels. <\/span><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Important :<\/span><\/strong><span class=\"ng-star-inserted\"> Les fibres de verre peuvent rayer les surfaces avec lesquelles elles entrent en contact.<\/span><\/p>\n<\/li>\n<\/ul>\n<h3 class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">3. PEEK renforc\u00e9 de fibres de carbone 30%<\/span><\/h3>\n<ul class=\"ng-star-inserted\">\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Caract\u00e9ristiques :<\/span><\/strong><span class=\"ng-star-inserted\"> Rigidit\u00e9, r\u00e9sistance \u00e0 la compression et r\u00e9sistance au fluage maximales ; son poids est bien inf\u00e9rieur \u00e0 celui du m\u00e9tal.<\/span><\/p>\n<\/li>\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Id\u00e9al pour :<\/span><\/strong><span class=\"ng-star-inserted\"> Supports pour l'a\u00e9rospatiale, \u00e9l\u00e9ments structurels destin\u00e9s \u00e0 supporter des charges importantes et bagues d'usure.<\/span><\/p>\n<\/li>\n<\/ul>\n<h3 class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">4. Nuance de PEEK pour roulements<\/span><\/h3>\n<ul class=\"ng-star-inserted\">\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Caract\u00e9ristiques :<\/span><\/strong><span class=\"ng-star-inserted\"> Lorsqu'il est m\u00e9lang\u00e9 \u00e0 du PTFE, du graphite et de la fibre de carbone, il r\u00e9duit le frottement et l'usure.<\/span><\/p>\n<\/li>\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Id\u00e9al pour :<\/span><\/strong><span class=\"ng-star-inserted\"> Douilles, engrenages et joints dynamiques qui fonctionnent sans n\u00e9cessiter de lubrification externe.<\/span><\/p>\n<\/li>\n<\/ul>\n<h2 class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">CNC et recommandations relatives au moulage par injection pour l'usinage du PEEK<\/span><\/h2>\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Le PEEK est un mat\u00e9riau hautement performant qui doit \u00eatre trait\u00e9 avec le plus grand soin. S'il n'est pas manipul\u00e9 correctement, il risque de perdre sa structure semi-cristalline et sa stabilit\u00e9 dimensionnelle.<\/span><\/p>\n<h3 class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">\u00c9l\u00e9ments \u00e0 prendre en compte lors de l'usinage CNC<\/span><\/h3>\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Le PEEK s'adapte bien \u00e0 l'usinage, mais il faut respecter certaines m\u00e9thodes :<\/span><\/p>\n<ul class=\"ng-star-inserted\">\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Outils :<\/span><\/strong><span class=\"ng-star-inserted\"> Utilisez des outils en diamant ou en carbure bien aff\u00fbt\u00e9s. Les outils \u00e9mouss\u00e9s g\u00e9n\u00e8rent trop de chaleur, ce qui provoque des contraintes et d\u00e9forme les pi\u00e8ces.<\/span><\/p>\n<\/li>\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Refroidissement :<\/span><\/strong><span class=\"ng-star-inserted\"> Le refroidissement par air ou par brouillard d'huile est la meilleure m\u00e9thode pour refroidir les pi\u00e8ces. Vous pouvez utiliser des liquides de refroidissement \u00e0 base d'eau, mais vous devez les manipuler avec pr\u00e9caution pour \u00e9viter tout choc thermique.<\/span><\/p>\n<\/li>\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Lutte contre le stress :<\/span><\/strong><span class=\"ng-star-inserted\"> Les pi\u00e8ces brutes pr\u00e9sentent souvent des contraintes r\u00e9siduelles. Il est vivement recommand\u00e9 de proc\u00e9der \u00e0 un recuit avant la finition finale afin d\u2019\u00e9viter toute d\u00e9formation et de garantir le respect des tol\u00e9rances.<\/span><\/p>\n<\/li>\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Niveaux renforc\u00e9s :<\/span><\/strong><span class=\"ng-star-inserted\"> Le verre et les fibres de carbone sont abrasifs, ce qui acc\u00e9l\u00e8re l'usure des outils. Pr\u00e9voyez-le.<\/span><\/p>\n<\/li>\n<\/ul>\n<h3 class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Moulage par injection et traitement thermique<\/span><\/h3>\n<ul class=\"ng-star-inserted\">\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Temp\u00e9ratures \u00e9lev\u00e9es :<\/span><\/strong><span class=\"ng-star-inserted\"> Pour faire fondre le PEEK, la temp\u00e9rature doit \u00eatre comprise entre 360 et 400 \u00b0C, et pour le mouler, elle doit \u00eatre comprise entre 160 et 200 \u00b0C.<\/span><\/p>\n<\/li>\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Cristallisation :<\/span><\/strong><span class=\"ng-star-inserted\"> Pour que le PEEK se cristallise compl\u00e8tement, le moule doit \u00eatre tr\u00e8s chaud. Un moule froid forme une \u201c couche superficielle \u201d amorphe, ce qui signifie qu\u2019elle est plus fragile et moins r\u00e9sistante aux produits chimiques.<\/span><\/p>\n<\/li>\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Mat\u00e9riel :<\/span><\/strong><span class=\"ng-star-inserted\"> Les machines de moulage doivent \u00eatre capables de maintenir ces temp\u00e9ratures \u00e9lev\u00e9es en toute s\u00e9curit\u00e9.<\/span><\/p>\n<\/li>\n<\/ul>\n<h2 class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">R\u00e8gles de conception des pi\u00e8ces en PEEK (DFM)<\/span><\/h2>\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Lors de la conception d'une pi\u00e8ce en PEEK, il faut tenir compte de sa dilatation thermique et de ses propri\u00e9t\u00e9s diff\u00e9rentes selon les directions (pour les grades renforc\u00e9s).<\/span><\/p>\n<h3 class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">1. L'\u00e9paisseur de la paroi et des nervures<\/span><\/h3>\n<ul class=\"ng-star-inserted\">\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Pour garantir un refroidissement et une cristallisation uniformes, veillez \u00e0 ce que l'\u00e9paisseur des parois reste constante (g\u00e9n\u00e9ralement entre 2 et 4 mm).<\/span><\/p>\n<\/li>\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Pour \u00e9viter la formation de creux, l'\u00e9paisseur des nervures doit \u00eatre comprise entre 50 et 60% de l'\u00e9paisseur de la paroi.<\/span><\/p>\n<\/li>\n<\/ul>\n<h3 class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">2. Tol\u00e9rances et dilatation thermique<\/span><\/h3>\n<ul class=\"ng-star-inserted\">\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Le coefficient de dilatation thermique (CTE) du PEEK est sup\u00e9rieur \u00e0 celui des m\u00e9taux, mais inf\u00e9rieur \u00e0 celui de la plupart des plastiques. Les tol\u00e9rances de conception doivent tenir compte du fait que les mat\u00e9riaux se dilatent lorsqu\u2019ils sont chauff\u00e9s (\u00e0 environ 200 \u00b0C).<\/span><\/p>\n<\/li>\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">V\u00e9rifiez les jeux afin de vous assurer que les pi\u00e8ces de rechange m\u00e9talliques ne risquent pas de se coincer.<\/span><\/p>\n<\/li>\n<\/ul>\n<h3 class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">3. Filetage et inserts<\/span><\/h3>\n<ul class=\"ng-star-inserted\">\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Utilisez des inserts m\u00e9talliques pour les fixations \u00e0 couple \u00e9lev\u00e9 afin d'emp\u00eacher leur glissement au fil du temps.<\/span><\/p>\n<\/li>\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Si vous devez le d\u00e9monter souvent, \u00e9vitez de tarauder directement dans le PEEK ; il vaut mieux utiliser des inserts h\u00e9lico\u00efdaux.<\/span><\/p>\n<\/li>\n<\/ul>\n<h2 class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Le PEEK est utilis\u00e9 dans diff\u00e9rents secteurs d'activit\u00e9<\/span><\/h2>\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Lorsque le co\u00fbt d'un \u00e9chec est sup\u00e9rieur au co\u00fbt \u00e9lev\u00e9 du mat\u00e9riau, on opte pour le PEEK.<\/span><\/p>\n<h3 class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Transport a\u00e9rien<\/span><\/h3>\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Utilis\u00e9 pour les supports, les colliers de serrage et les pi\u00e8ces internes. Son utilisation \u00e0 la place de l'aluminium et de l'acier permet de r\u00e9aliser d'importantes \u00e9conomies de carburant gr\u00e2ce \u00e0 son rapport r\u00e9sistance\/poids \u00e9lev\u00e9.<\/span><\/p>\n<h3 class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Outils pour la sant\u00e9<\/span><\/h3>\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Le PEEK est sans danger pour les \u00eatres vivants et n'est pas d\u00e9tectable aux rayons X. C'est le mat\u00e9riau de r\u00e9f\u00e9rence pour les cages vert\u00e9brales, les implants orthop\u00e9diques et les instruments chirurgicaux r\u00e9utilisables, qui doivent pouvoir r\u00e9sister \u00e0 des cycles r\u00e9p\u00e9t\u00e9s de st\u00e9rilisation en autoclave.<\/span><\/p>\n<h3 class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">P\u00e9trole et gaz<\/span><\/h3>\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">C'est gr\u00e2ce \u00e0 sa r\u00e9sistance aux conditions de haute pression et haute temp\u00e9rature (HPHT), au gaz acide et \u00e0 l'hydrolyse que le PEEK est particuli\u00e8rement adapt\u00e9 \u00e0 la fabrication de raccords de fond de puits, de joints d'\u00e9tanch\u00e9it\u00e9 et de bagues d'appui.<\/span><\/p>\n<h3 class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Semi-conducteur<\/span><\/h3>\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Gr\u00e2ce \u00e0 sa grande puret\u00e9 (faible d\u00e9gazage) et \u00e0 sa r\u00e9sistance aux produits chimiques, le PEEK est id\u00e9al pour les pi\u00e8ces destin\u00e9es \u00e0 la manipulation de plaquettes et celles utilis\u00e9es dans les proc\u00e9d\u00e9s de gravure chimique.<\/span><\/p>\n<h2 class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Le PEEK compar\u00e9 \u00e0 d'autres plastiques techniques<\/span><\/h2>\n<div class=\"table-container ng-star-inserted\">\n<table>\n<tbody>\n<tr class=\"table-header ng-star-inserted\">\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Propri\u00e9t\u00e9<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">COUP D&#039;OEIL<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">PEI (Ultem)<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">PPS<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">PTFE<\/span><\/td>\n<\/tr>\n<tr class=\"ng-star-inserted\">\n<td class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Temp\u00e9rature constante<\/span><\/strong><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">environ 250 \u00b0C<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">environ 170 \u00b0C<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">environ 200 \u00b0C<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">environ 260 \u00b0C<\/span><\/td>\n<\/tr>\n<tr class=\"ng-star-inserted\">\n<td class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">La force<\/span><\/strong><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Tr\u00e8s \u00e9lev\u00e9<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">\u00c9lev\u00e9<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">\u00c9lev\u00e9<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Faible<\/span><\/td>\n<\/tr>\n<tr class=\"ng-star-inserted\">\n<td class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">R\u00e9sistance chimique<\/span><\/strong><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Excellent<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Bon<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Excellent<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Remarquable<\/span><\/td>\n<\/tr>\n<tr class=\"ng-star-inserted\">\n<td class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">R\u00e9sistant \u00e0 l'usure<\/span><\/strong><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Excellent<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Mod\u00e9r\u00e9<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Bon<\/span><\/td>\n<td class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Excellent<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">La logique en ing\u00e9nierie :<\/span><\/strong><\/p>\n<ul class=\"ng-star-inserted\">\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Si vous recherchez la meilleure combinaison entre r\u00e9sistance m\u00e9canique, r\u00e9sistance \u00e0 la chaleur et r\u00e9sistance chimique, <\/span><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">choisissez le PEEK<\/span><\/strong><span class=\"ng-star-inserted\">.<\/span><\/p>\n<\/li>\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Si le co\u00fbt pose un gros probl\u00e8me et que la r\u00e9sistance n'est pas une priorit\u00e9, <\/span><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">choisissez PPS<\/span><\/strong><span class=\"ng-star-inserted\">.<\/span><\/p>\n<\/li>\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Utiliser du PTFE<\/span><\/strong><span class=\"ng-star-inserted\"> uniquement pour les applications impliquant des agents chimiques et des frottements, o\u00f9 il n'est pas n\u00e9cessaire qu'il soit suffisamment r\u00e9sistant pour supporter une charge.<\/span><\/p>\n<\/li>\n<\/ul>\n<h2 class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">R\u00e9sum\u00e9 : Ce que les ing\u00e9nieurs doivent savoir sur le PEEK<\/span><\/h2>\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Le plastique poly\u00e9ther\u00e9therc\u00e9tone (PEEK) est le meilleur thermoplastique technique. Il offre des performances similaires \u00e0 celles du m\u00e9tal, tout en \u00e9tant plus l\u00e9ger que ce dernier.<\/span><\/p>\n<ul class=\"ng-star-inserted\">\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Performance :<\/span><\/strong><span class=\"ng-star-inserted\"> Il conserve sa r\u00e9sistance m\u00eame \u00e0 des temp\u00e9ratures \u00e9lev\u00e9es (jusqu'\u00e0 250 \u00b0C) et r\u00e9siste \u00e0 un large \u00e9ventail de produits chimiques.<\/span><\/p>\n<\/li>\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Traitement :<\/span><\/strong><span class=\"ng-star-inserted\"> Pour en tirer le meilleur parti, il faut disposer d'\u00e9quipements pouvant fonctionner \u00e0 haute temp\u00e9rature et mettre en place un contr\u00f4le rigoureux des processus (recuit, temp\u00e9rature du moule).<\/span><\/p>\n<\/li>\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Conception :<\/span><\/strong><span class=\"ng-star-inserted\"> Les ing\u00e9nieurs doivent tenir compte du fait que les b\u00e9tons arm\u00e9s se dilatent et se contractent sous l'effet de la chaleur, et que ce ph\u00e9nom\u00e8ne ne se produit pas de la m\u00eame mani\u00e8re dans toutes les directions.<\/span><\/p>\n<\/li>\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">S\u00e9lection :<\/span><\/strong><span class=\"ng-star-inserted\"> Le PEEK constitue un bon choix pour les applications a\u00e9rospatiales, m\u00e9dicales et industrielles critiques, mais il est g\u00e9n\u00e9ralement trop r\u00e9sistant pour les pi\u00e8ces qui ne sont pas soumises \u00e0 des charges importantes ou qui sont utilis\u00e9es \u00e0 temp\u00e9rature ambiante.<\/span><\/p>\n<\/li>\n<\/ul>\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">D\u00e9cision technique finale :<\/span><\/strong><span class=\"ng-star-inserted\"> Si la r\u00e9sistance aux hautes temp\u00e9ratures, la r\u00e9sistance chimique et la fiabilit\u00e9 m\u00e9canique sont des crit\u00e8res indispensables, optez pour <\/span><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Plastique PEEK<\/span><\/strong><span class=\"ng-star-inserted\">. Ne l'utilisez pas pour des applications o\u00f9 des plastiques techniques standard, comme le nylon ou l'ac\u00e9tal, suffisent et o\u00f9 le co\u00fbt est un facteur important.<\/span><\/p>\n<h2 class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">FAQ<\/span><\/h2>\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">\u00c0 quelles applications le plastique PEEK peut-il servir ?<\/span><\/strong><br class=\"ng-star-inserted\" \/><span class=\"ng-star-inserted\">Le PEEK est utilis\u00e9 dans des conditions tr\u00e8s difficiles, o\u00f9 il doit pouvoir r\u00e9sister \u00e0 des temp\u00e9ratures \u00e9lev\u00e9es et \u00e0 des produits chimiques. Parmi ses applications les plus courantes, on peut citer les supports utilis\u00e9s dans l'a\u00e9rospatiale, les implants rachidiens, les supports de plaquettes de semi-conducteurs, ainsi que les bagues et joints haute performance dans l'industrie p\u00e9troli\u00e8re et gazi\u00e8re.<\/span><\/p>\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Le PEEK est-il meilleur que le m\u00e9tal ?<\/span><\/strong><br class=\"ng-star-inserted\" \/><span class=\"ng-star-inserted\">Oui, dans certaines situations. Le PEEK est bien plus l\u00e9ger que l'acier (jusqu'\u00e0 70% plus l\u00e9ger), offre une meilleure r\u00e9sistance \u00e0 la corrosion et une meilleure isolation \u00e9lectrique. Les m\u00e9taux sont globalement plus rigides, mais le PEEK constitue souvent le meilleur choix en termes de rapport r\u00e9sistance\/poids et de r\u00e9sistance chimique.<\/span><\/p>\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Est-ce difficile d'usiner le PEEK ?<\/span><\/strong><br class=\"ng-star-inserted\" \/><span class=\"ng-star-inserted\">L'usinage du PEEK est difficile, mais il est tout \u00e0 fait possible. Pour respecter des tol\u00e9rances serr\u00e9es, il faut disposer d'outils bien aff\u00fbt\u00e9s, g\u00e9rer soigneusement la chaleur et proc\u00e9der \u00e0 un recuit de d\u00e9tente. Les nuances renforc\u00e9es (verre\/carbone) sont rugueuses et usent plus rapidement les outils.<\/span><\/p>\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Pourquoi le PEEK est-il un mat\u00e9riau si co\u00fbteux ?<\/span><\/strong><br class=\"ng-star-inserted\" \/><span class=\"ng-star-inserted\">La synth\u00e8se complexe des monom\u00e8res de haute puret\u00e9 et le processus de polym\u00e9risation difficile n\u00e9cessaires \u00e0 la fabrication du PEEK en font un mat\u00e9riau co\u00fbteux. Son prix \u00e9lev\u00e9 se justifie toutefois, car il peut \u00eatre utilis\u00e9 dans des environnements o\u00f9 des plastiques moins chers fondraient ou se d\u00e9graderaient chimiquement.<\/span><\/p>\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">Le PEEK peut-il remplacer l'aluminium ou l'acier inoxydable ?<\/span><\/strong><br class=\"ng-star-inserted\" \/><span class=\"ng-star-inserted\">Oui. Dans les supports structurels, les roues et les pi\u00e8ces d'usure, le PEEK remplace souvent les m\u00e9taux. Il \u00e9limine les probl\u00e8mes de corrosion, g\u00e9n\u00e8re moins de bruit (NVH) et poss\u00e8de des propri\u00e9t\u00e9s autolubrifiantes dont les m\u00e9taux sont d\u00e9pourvus.<\/span><\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Le plastique poly\u00e9ther\u00e9therc\u00e9tone (PEEK) est largement reconnu comme l'un des meilleurs thermoplastiques techniques disponibles sur le march\u00e9.<\/p>","protected":false},"author":1,"featured_media":9844,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[103],"tags":[],"class_list":["post-9758","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-materials-guide"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.5 (Yoast SEO v28.7) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>PEEK Plastic: Properties, Machining &amp; Applications<\/title>\n<meta name=\"description\" content=\"Engineering guide to PEEK plastic, covering mechanical properties, high-temperature performance, chemical resistance, machinability, and practical design guidelines.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.cncmachiningshops.com\/fr\/peek-plastic\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"PEEK Plastic Explained: Properties, Applications, Machining &amp; 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