{"id":25168,"date":"2023-12-17T17:30:58","date_gmt":"2023-12-17T22:30:58","guid":{"rendered":"https:\/\/www.elastoproxy.com\/?p=25168"},"modified":"2023-12-17T17:34:04","modified_gmt":"2023-12-17T22:34:04","slug":"comparaison-des-composes-du-caoutchouc-proprietes-des-materiaux","status":"publish","type":"post","link":"https:\/\/www.elastoproxy.com\/fr\/comparaison-des-composes-du-caoutchouc-proprietes-des-materiaux\/","title":{"rendered":"Comparaison des compos\u00e9s du caoutchouc: propri\u00e9t\u00e9s des mat\u00e9riaux"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"25168\" class=\"elementor elementor-25168\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-a626c4b elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"a626c4b\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-e767760\" data-id=\"e767760\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-3461396 elementor-widget elementor-widget-text-editor\" data-id=\"3461396\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Les propri\u00e9t\u00e9s des mat\u00e9riaux pour les compos\u00e9s du caoutchouc comprennent les propri\u00e9t\u00e9s physiques, thermiques et \u00e9lectriques. Elasto Proxy se sp\u00e9cialise dans les produits industriels en caoutchouc et aide ses clients \u00e0 choisir des compos\u00e9s.<\/p><p>Cet article compare quatre des compos\u00e9s que nous distribuons ou fabriquons couramment.<\/p><ul><li>L&rsquo;EPDM<\/li><li>Le Nitrile (NBR, Buna-N)<\/li><li>Le N\u00e9opr\u00e8ne<\/li><li>Le Silicone<\/li><\/ul><p>Il compare \u00e9galement trois compos\u00e9s suppl\u00e9mentaires qui sont utilis\u00e9s moins couramment, mais qui sont toujours importants.\u00a0<\/p><ul><li>Caoutchouc naturel<\/li><li>SBR<\/li><li>Fluorosilicone<\/li><\/ul><p>Continuez \u00e0 lire pour savoir comment les compos\u00e9s du caoutchouc se comparent. Si vous \u00eates pr\u00eat \u00e0\u00a0 parler de votre demande de scellage, <a href=\"https:\/\/www.elastoproxy.com\/contact-us\/\">contactez-nous<\/a>.<\/p><h2><strong>Propri\u00e9t\u00e9s physiques: Propri\u00e9t\u00e9s du mat\u00e9riau pour les compos\u00e9s de caoutchouc <\/strong><\/h2><p><a href=\"https:\/\/www.elastoproxy.com\/physical-properties\/\">Les propri\u00e9t\u00e9s<\/a> physiques des compos\u00e9s de caoutchouc sont des caract\u00e9ristiques de mat\u00e9riau qui n\u2019impliquent pas de changement dans la composition chimique.<\/p><h3><strong>R\u00e9sistance \u00e0 la traction<\/strong><\/h3><p>La r\u00e9sistance \u00e0 la traction d\u00e9crit la force n\u00e9cessaire pour s\u00e9parer un \u00e9chantillon de caoutchouc jusqu\u2019\u00e0 ce qu\u2019il se brise. Il est mesur\u00e9 en livres par pouce carr\u00e9 (psi) ou en kilopascals (kPa).<\/p><p>L\u2019EPDM et le n\u00e9opr\u00e8ne ont la m\u00eame r\u00e9sistance \u00e0 la traction &#8211; et en quantit\u00e9 deux fois plus grande que le silicone.<\/p><table><tbody><tr><td width=\"144\"><p>\u00a0<\/p><\/td><td width=\"120\"><p><strong>EPDM<\/strong><\/p><\/td><td width=\"126\"><p><strong>N\u00e9opr\u00e8ne<\/strong><\/p><\/td><td width=\"114\"><p><strong>Nitrile<\/strong><\/p><\/td><td width=\"120\"><p><strong>Silicone<\/strong><\/p><\/td><\/tr><tr><td width=\"144\"><p><strong>R\u00e9sistance \u00e0 la traction (PSI)<\/strong><\/p><\/td><td width=\"120\"><p>3000<\/p><\/td><td width=\"126\"><p>3000<\/p><\/td><td width=\"114\"><p>2000<\/p><\/td><td width=\"120\"><p>1500<\/p><\/td><\/tr><tr><td width=\"144\"><p><strong>R\u00e9sistance \u00e0 la traction (kPA)<\/strong><\/p><\/td><td width=\"120\"><p>20k<\/p><\/td><td width=\"126\"><p>20k<\/p><\/td><td width=\"114\"><p>14k<\/p><\/td><td width=\"120\"><p>10k<\/p><\/td><\/tr><\/tbody><\/table><p>\u00a0<\/p><p>Le caoutchouc naturel a la plus grande r\u00e9sistance \u00e0 la traction. Le fluorosilcione en a la pire.\u00a0\u00a0<\/p><table><tbody><tr><td width=\"144\"><p>\u00a0<\/p><\/td><td width=\"120\"><p><strong>Caoutchouc naturel<\/strong><\/p><\/td><td width=\"126\"><p><strong>SBR<\/strong><\/p><\/td><td width=\"114\"><p><strong>Fluorosilicone<\/strong><\/p><\/td><\/tr><tr><td width=\"144\"><p><strong>R\u00e9sistance \u00e0 la traction (PSI)<\/strong><\/p><\/td><td width=\"120\"><p>3000<\/p><\/td><td width=\"126\"><p>2000<\/p><\/td><td width=\"114\"><p>1500<\/p><\/td><\/tr><tr><td width=\"144\"><p><strong>R\u00e9sistance \u00e0 la traction (kPA)<\/strong><\/p><\/td><td width=\"120\"><p>20k<\/p><\/td><td width=\"126\"><p>14k<\/p><\/td><td width=\"114\"><p>10k<\/p><\/td><\/tr><\/tbody><\/table><p><strong>\u00a0<\/strong><\/p><h3><strong>Duret\u00e9<\/strong><\/h3><p>La duret\u00e9 d\u00e9crit la r\u00e9sistance d\u2019un caoutchouc \u00e0 l\u2019indentation. Il peut \u00eatre mesur\u00e9 sur l\u2019\u00e9chelle internationale du degr\u00e9 de duret\u00e9 du caoutchouc (IRHD) de 0 (le plus doux) \u00e0 100 (le plus dur).<\/p><p>L\u2019EPDM, le n\u00e9opr\u00e8ne et le nitrile sont tous disponibles dans la m\u00eame gamme de duret\u00e9s. Le silicone est disponible dans les IRHD plus doux, mais pas dans ceux qui sont aussi durs que ces autres compos\u00e9s.\u00a0\u00a0\u00a0\u00a0\u00a0<\/p><table><tbody><tr><td width=\"144\"><p>\u00a0<\/p><\/td><td width=\"120\"><p><strong>EPDM<\/strong><\/p><\/td><td width=\"126\"><p><strong>N\u00e9opr\u00e8ne<\/strong><\/p><\/td><td width=\"114\"><p><strong>Nitrile<\/strong><\/p><\/td><td width=\"120\"><p><strong>Silicone<\/strong><\/p><\/td><\/tr><tr><td width=\"144\"><p><strong>Duret\u00e9 (IRHD)<\/strong><\/p><\/td><td width=\"120\"><p>40-90<\/p><\/td><td width=\"126\"><p>40-95<\/p><\/td><td width=\"114\"><p>40-95<\/p><\/td><td width=\"120\"><p>30-85<\/p><\/td><\/tr><\/tbody><\/table><p>\u00a0<\/p><p>Le caoutchouc naturel est disponible en IHRDs qui sont aussi doux que le silicone. Le SBR est similaire au n\u00e9opr\u00e8ne et au nitrile en termes de duret\u00e9s disponibles. Le fluorosilcone a une gamme relativement \u00e9troite d&rsquo;IRHDs.\u00a0<\/p><table><tbody><tr><td width=\"144\"><p>\u00a0<\/p><\/td><td width=\"120\"><p><strong>Caoutchouc naturel<\/strong><\/p><\/td><td width=\"126\"><p><strong>SBR<\/strong><\/p><\/td><td width=\"114\"><p><strong>Fluorosilicone<\/strong><\/p><\/td><\/tr><tr><td width=\"144\"><p><strong>Duret\u00e9 (IRHD)<\/strong><\/p><\/td><td width=\"120\"><p>30-90<\/p><\/td><td width=\"126\"><p>40-90<\/p><\/td><td width=\"114\"><p>40-80<\/p><\/td><\/tr><\/tbody><\/table><p>\u00a0<\/p><h3><strong>Gravit\u00e9 sp\u00e9cifique<\/strong><\/h3><p>La densit\u00e9 est le rapport entre le poids d\u2019un mat\u00e9riau et le poids d\u2019un volume \u00e9gal d\u2019eau \u00e0 une temp\u00e9rature sp\u00e9cifi\u00e9e. C\u2019est un nombre sans dimension, mais le caoutchouc avec une densit\u00e9 plus \u00e9lev\u00e9e est plus lourd.<\/p><p>Compar\u00e9 au n\u00e9opr\u00e8ne et au nitrile, le silicone est plus lourd et l\u2019EPDM est plus l\u00e9ger.\u00a0<\/p><table><tbody><tr><td width=\"144\"><p>\u00a0<\/p><\/td><td width=\"120\"><p><strong>EPDM<\/strong><\/p><\/td><td width=\"126\"><p><strong>N\u00e9opr\u00e8ne<\/strong><\/p><\/td><td width=\"114\"><p><strong>Nitrile<\/strong><\/p><\/td><td width=\"120\"><p><strong>Silicone<\/strong><\/p><\/td><\/tr><tr><td width=\"144\"><p><strong>Gravit\u00e9 sp\u00e9cifique<\/strong><\/p><\/td><td width=\"120\"><p>0.86<\/p><\/td><td width=\"126\"><p>1.23<\/p><\/td><td width=\"114\"><p>1<\/p><\/td><td width=\"120\"><p>1.1\/1.6<\/p><\/td><\/tr><\/tbody><\/table><p>\u00a0<\/p><p>Le fluorosilicone a la densit\u00e9 la plus \u00e9lev\u00e9e. Le caoutchouc naturel et le SBR ont des niveaux similaires.<\/p><table><tbody><tr><td width=\"144\"><p>\u00a0<\/p><\/td><td width=\"120\"><p><strong>Caoutchouc naturel<\/strong><\/p><\/td><td width=\"126\"><p><strong>SBR<\/strong><\/p><\/td><td width=\"114\"><p><strong>Fluorosilicone<\/strong><\/p><\/td><\/tr><tr><td width=\"144\"><p><strong>Gravit\u00e9 sp\u00e9cifique<\/strong><\/p><\/td><td width=\"120\"><p>0.93<\/p><\/td><td width=\"126\"><p>0.94<\/p><\/td><td width=\"114\"><p>1.3-1.8<\/p><\/td><\/tr><\/tbody><\/table><p>\u00a0<\/p><h3><strong>R\u00e9sistance \u00e0 la d\u00e9chirure<\/strong><\/h3><p>La r\u00e9sistance \u00e0 la d\u00e9chirure d\u00e9crit la r\u00e9sistance d\u2019un caoutchouc \u00e0 la croissance d\u2019une entaille ou d\u2019une coupe sous tension. Il comprend la force requise pour initier une d\u00e9chirure et la force requise pour la propager.<\/p><p>Le n\u00e9opr\u00e8ne a la plus grande r\u00e9sistance \u00e0 la d\u00e9chirure. Le silicone en a le moins. Le nitrile en a juste assez.\u00a0\u00a0<\/p><table><tbody><tr><td width=\"144\"><p>\u00a0<\/p><\/td><td width=\"120\"><p><strong>EPDM<\/strong><\/p><\/td><td width=\"126\"><p><strong>N\u00e9opr\u00e8ne<\/strong><\/p><\/td><td width=\"114\"><p><strong>Nitrile<\/strong><\/p><\/td><td width=\"120\"><p><strong>Silicone<\/strong><\/p><\/td><\/tr><tr><td width=\"144\"><p><strong>R\u00e9sistance \u00e0 la d\u00e9chirure<\/strong><\/p><\/td><td width=\"120\"><p>Passable \u00e0 bon<\/p><\/td><td width=\"126\"><p>C\u2019est bien<\/p><\/td><td width=\"114\"><p>Passable<\/p><\/td><td width=\"120\"><p>Pauvre<\/p><\/td><\/tr><\/tbody><\/table><p>\u00a0<\/p><p>Le caoutchouc naturel a une r\u00e9sistance \u00e0 la d\u00e9chirure beaucoup plus grande que les autres compos\u00e9s.<\/p><table><tbody><tr><td width=\"144\"><p>\u00a0<\/p><\/td><td width=\"120\"><p><strong>Caoutchouc naturel<\/strong><\/p><\/td><td width=\"126\"><p><strong>SBR<\/strong><\/p><\/td><td width=\"114\"><p><strong>Fluorosilicone<\/strong><\/p><\/td><\/tr><tr><td width=\"144\"><p><strong>R\u00e9sistance \u00e0 la d\u00e9chirure<\/strong><\/p><\/td><td width=\"120\"><p>Tr\u00e8s bon<\/p><\/td><td width=\"126\"><p>Passable<\/p><\/td><td width=\"114\"><p>Passable<\/p><\/td><\/tr><\/tbody><\/table><p>\u00a0<\/p><h3><strong>R\u00e9sistance \u00e0 l\u2019abrasion<\/strong><\/h3><p>La r\u00e9sistance \u00e0 l\u2019abrasion d\u00e9crit la r\u00e9sistance d\u2019un caoutchouc au frottement ou au raclage.<\/p><p>Le silicone a la plus faible r\u00e9sistance \u00e0 l\u2019abrasion, mais le nitrile est excellent. L\u2019EPDM et le n\u00e9opr\u00e8ne sont tous deux bons.<\/p><table><tbody><tr><td width=\"144\"><p>\u00a0<\/p><\/td><td width=\"120\"><p><strong>EPDM<\/strong><\/p><\/td><td width=\"126\"><p><strong>N\u00e9opr\u00e8ne<\/strong><\/p><\/td><td width=\"114\"><p><strong>Nitrile<\/strong><\/p><\/td><td width=\"120\"><p><strong>Silicone<\/strong><\/p><\/td><\/tr><tr><td width=\"144\"><p><strong>R\u00e9sistance \u00e0 l\u2019abrasion<\/strong><\/p><\/td><td width=\"120\"><p>C\u2019est bien<\/p><\/td><td width=\"126\"><p>C\u2019est bien<\/p><\/td><td width=\"114\"><p>Excellent<\/p><\/td><td width=\"120\"><p>Pauvre<\/p><\/td><\/tr><\/tbody><\/table><p>\u00a0<\/p><p>Le caoutchouc naturel a une excellente r\u00e9sistance \u00e0 l\u2019abrasion, mais le SBR est tr\u00e8s bon.<\/p><table><tbody><tr><td width=\"144\"><p>\u00a0<\/p><\/td><td width=\"120\"><p><strong>Caoutchouc naturel<\/strong><\/p><\/td><td width=\"126\"><p><strong>SBR<\/strong><\/p><\/td><td width=\"114\"><p><strong>Fluorosilicone<\/strong><\/p><\/td><\/tr><tr><td width=\"144\"><p><strong>R\u00e9sistance \u00e0 l\u2019abrasion<\/strong><\/p><\/td><td width=\"120\"><p>Excellent<\/p><\/td><td width=\"126\"><p>Tr\u00e8s bon \u00e0 excellent<\/p><\/td><td width=\"114\"><p>C\u2019est bien<\/p><\/td><\/tr><\/tbody><\/table><p>\u00a0<\/p><h3><strong>Rebond (froid et chaud)<\/strong><\/h3><p>Le rebond fait r\u00e9f\u00e9rence \u00e0 la capacit\u00e9 d\u2019un caoutchouc \u00e0 retrouver sa taille et sa forme d\u2019origine apr\u00e8s qu\u2019il soit temporairement d\u00e9form\u00e9. Cette propri\u00e9t\u00e9 physique est affect\u00e9e par la temp\u00e9rature, c\u2019est pourquoi les valeurs Cold et Hot sont r\u00e9pertori\u00e9es ci-dessous.<\/p><p>Ces quatre compos\u00e9s sont comparables en termes de rebond froid et chaud.<\/p><table><tbody><tr><td width=\"144\"><p>\u00a0<\/p><\/td><td width=\"120\"><p><strong>EPDM<\/strong><\/p><\/td><td width=\"126\"><p><strong>N\u00e9opr\u00e8ne<\/strong><\/p><\/td><td width=\"114\"><p><strong>Nitrile<\/strong><\/p><\/td><td width=\"120\"><p><strong>Silicone<\/strong><\/p><\/td><\/tr><tr><td width=\"144\"><p><strong>Rebond &#8211; Froid<\/strong><\/p><\/td><td width=\"120\"><p>Tr\u00e8s bon<\/p><\/td><td width=\"126\"><p>Tr\u00e8s bon<\/p><\/td><td width=\"114\"><p>C\u2019est bien<\/p><\/td><td width=\"120\"><p>Excellent<\/p><\/td><\/tr><tr><td width=\"144\"><p><strong>Rebond &#8211; Chaud<\/strong><\/p><\/td><td width=\"120\"><p>Tr\u00e8s bon<\/p><\/td><td width=\"126\"><p>Tr\u00e8s bon<\/p><\/td><td width=\"114\"><p>C\u2019est bien<\/p><\/td><td width=\"120\"><p>Excellent<\/p><\/td><\/tr><\/tbody><\/table><p>\u00a0<\/p><p>Ces trois compos\u00e9s ont des niveaux de rebond comparables.<\/p><table><tbody><tr><td width=\"144\"><p>\u00a0<\/p><\/td><td width=\"120\"><p><strong>Caoutchouc naturel<\/strong><\/p><\/td><td width=\"126\"><p><strong>SBR<\/strong><\/p><\/td><td width=\"114\"><p><strong>Fluorosilicone<\/strong><\/p><\/td><\/tr><tr><td width=\"144\"><p><strong>Rebond &#8211; Froid<\/strong><\/p><\/td><td width=\"120\"><p>Excellent<\/p><\/td><td width=\"126\"><p>C\u2019est bien<\/p><\/td><td width=\"114\"><p>Excellent<\/p><\/td><\/tr><tr><td width=\"144\"><p><strong>Rebond &#8211; Chaud<\/strong><\/p><\/td><td width=\"120\"><p>Excellent<\/p><\/td><td width=\"126\"><p>C\u2019est bien<\/p><\/td><td width=\"114\"><p>C\u2019est bien<\/p><\/td><\/tr><\/tbody><\/table><p>\u00a0<\/p><h3><strong>Jeu de compression<\/strong><\/h3><p>L\u2019ensemble de compression fait r\u00e9f\u00e9rence \u00e0 la d\u00e9formation permanente qui se produit lorsqu\u2019un mat\u00e9riau est comprim\u00e9 sous une charge sp\u00e9cifique pendant un temps sp\u00e9cifique et \u00e0 une temp\u00e9rature sp\u00e9cifique.<\/p><p>Le silicone et le n\u00e9opr\u00e8ne sont plus sensibles \u00e0 l\u2019ensemble de compression que l\u2019EPDM et le nitrile.<\/p><table><tbody><tr><td width=\"144\"><p>\u00a0<\/p><\/td><td width=\"120\"><p><strong>EPDM<\/strong><\/p><\/td><td width=\"126\"><p><strong>N\u00e9opr\u00e8ne<\/strong><\/p><\/td><td width=\"114\"><p><strong>Nitrile<\/strong><\/p><\/td><td width=\"120\"><p><strong>Silicone<\/strong><\/p><\/td><\/tr><tr><td width=\"144\"><p><strong>Jeu de compression<\/strong><\/p><\/td><td width=\"120\"><p>C\u2019est bien<\/p><\/td><td width=\"126\"><p>Passable \u00e0 bon<\/p><\/td><td width=\"114\"><p>C\u2019est bien<\/p><\/td><td width=\"120\"><p>Passable<\/p><\/td><\/tr><\/tbody><\/table><p>\u00a0<\/p><p>Comme le silicone, la fluorosilicone n\u2019a qu\u2019un ensemble de compression \u00e9quitable. Le caoutchouc naturel et le SBR sont tous deux bons.<\/p><table><tbody><tr><td width=\"144\"><p>\u00a0<\/p><\/td><td width=\"120\"><p><strong>Caoutchouc naturel<\/strong><\/p><\/td><td width=\"126\"><p><strong>SBR<\/strong><\/p><\/td><td width=\"114\"><p><strong>Fluorosilicone<\/strong><\/p><\/td><\/tr><tr><td width=\"144\"><p><strong>Jeu de compression<\/strong><\/p><\/td><td width=\"120\"><p>C\u2019est bien<\/p><\/td><td width=\"126\"><p>C\u2019est bien<\/p><\/td><td width=\"114\"><p>Passable<\/p><\/td><\/tr><\/tbody><\/table><p>\u00a0<\/p><h3><strong>Perm\u00e9abilit\u00e9 aux gaz<\/strong><\/h3><p>La perm\u00e9abilit\u00e9 des gaz d\u00e9crit la vitesse \u00e0 laquelle les mol\u00e9cules de gaz telles que l\u2019air traversent un compos\u00e9 de caoutchouc.<\/p><p>Le n\u00e9opr\u00e8ne a une bonne perm\u00e9abilit\u00e9 aux gaz. L\u2019EPDM, le nitrile et le silicone ne le font pas.<\/p><table><tbody><tr><td width=\"144\"><p>\u00a0<\/p><\/td><td width=\"120\"><p><strong>EPDM<\/strong><\/p><\/td><td width=\"126\"><p><strong>N\u00e9opr\u00e8ne<\/strong><\/p><\/td><td width=\"114\"><p><strong>Nitrile<\/strong><\/p><\/td><td width=\"120\"><p><strong>Silicone<\/strong><\/p><\/td><\/tr><tr><td width=\"144\"><p><strong>Perm\u00e9abilit\u00e9 aux gaz<\/strong><\/p><\/td><td width=\"120\"><p>Assez faible<\/p><\/td><td width=\"126\"><p>C\u2019est bien<\/p><\/td><td width=\"114\"><p>Faible<\/p><\/td><td width=\"120\"><p>Assez faible<\/p><\/td><\/tr><\/tbody><\/table><p>\u00a0<\/p><p>Le caoutchouc naturel, le SBR et la fluorosilicone sont comparables.<\/p><table><tbody><tr><td width=\"144\"><p>\u00a0<\/p><\/td><td width=\"120\"><p><strong>Caoutchouc naturel<\/strong><\/p><\/td><td width=\"126\"><p><strong>SBR<\/strong><\/p><\/td><td width=\"114\"><p><strong>Fluorosilicone<\/strong><\/p><\/td><\/tr><tr><td width=\"144\"><p><strong>Perm\u00e9abilit\u00e9 aux gaz\u00a0 <\/strong><\/p><\/td><td width=\"120\"><p>Assez faible<\/p><\/td><td width=\"126\"><p>Assez faible<\/p><\/td><td width=\"114\"><p>Assez faible<\/p><\/td><\/tr><\/tbody><\/table><p>\u00a0<\/p><h3><strong>Absorption d\u2019eau<\/strong><\/h3><p>L\u2019absorption d\u2019eau fait r\u00e9f\u00e9rence \u00e0 la capacit\u00e9 d\u2019un caoutchouc \u00e0 absorber l\u2019eau de son environnement. Les compos\u00e9s o\u00f9 l\u2019absorption d\u2019eau est d\u00e9crite comme tr\u00e8s bonne ou excellente absorbent tr\u00e8s peu d\u2019eau.<\/p><p>Le silicone a la plus faible absorption d\u2019eau, mais les EPDMs peuvent \u00e9galement \u00eatre excellents. Le n\u00e9opr\u00e8ne et le nitrile sont bons tous les deux.<\/p><table><tbody><tr><td width=\"144\"><p>\u00a0<\/p><\/td><td width=\"120\"><p><strong>EPDM<\/strong><\/p><\/td><td width=\"126\"><p><strong>N\u00e9opr\u00e8ne<\/strong><\/p><\/td><td width=\"114\"><p><strong>Nitrile<\/strong><\/p><\/td><td width=\"120\"><p><strong>Silicone<\/strong><\/p><\/td><\/tr><tr><td width=\"144\"><p><strong>Absorption d\u2019eau<\/strong><\/p><\/td><td width=\"120\"><p>Tr\u00e8s bon \u00e0 excellent<\/p><\/td><td width=\"126\"><p>C\u2019est bien<\/p><\/td><td width=\"114\"><p>C\u2019est bien<\/p><\/td><td width=\"120\"><p>Excellent<\/p><\/td><\/tr><\/tbody><\/table><p>\u00a0<\/p><p>Ces trois compos\u00e9s ont de faibles taux d\u2019absorption de l\u2019eau.<\/p><table><tbody><tr><td width=\"144\"><p>\u00a0<\/p><\/td><td width=\"120\"><p><strong>Caoutchouc naturel<\/strong><\/p><\/td><td width=\"126\"><p><strong>SBR<\/strong><\/p><\/td><td width=\"114\"><p><strong>Fluorosilicone<\/strong><\/p><\/td><\/tr><tr><td width=\"144\"><p><strong>Absorption d\u2019eau\u00a0 <\/strong><\/p><\/td><td width=\"120\"><p>Tr\u00e8s bon<\/p><\/td><td width=\"126\"><p>Tr\u00e8s bon<\/p><\/td><td width=\"114\"><p>C\u2019est bien<\/p><\/td><\/tr><\/tbody><\/table><p>\u00a0<\/p><h3><strong>Oxydation <\/strong><\/h3><p>L\u2019oxydation ajoute de l\u2019oxyg\u00e8ne \u00e0 une substance. Avec le caoutchouc, c\u2019est un probl\u00e8me car un compos\u00e9 peut devenir plus faible et moins \u00e9lastique.<\/p><p>L\u2019EPDM et le silicone ont une plus grande r\u00e9sistance \u00e0 l\u2019oxydation que le nitrile ou le n\u00e9opr\u00e8ne.\u00a0<\/p><table><tbody><tr><td width=\"144\"><p>\u00a0<\/p><\/td><td width=\"120\"><p><strong>EPDM<\/strong><\/p><\/td><td width=\"126\"><p><strong>N\u00e9opr\u00e8ne<\/strong><\/p><\/td><td width=\"114\"><p><strong>Nitrile<\/strong><\/p><\/td><td width=\"120\"><p><strong>Silicone<\/strong><\/p><\/td><\/tr><tr><td width=\"144\"><p><strong>Oxydation<\/strong><\/p><\/td><td width=\"120\"><p>Excellent<\/p><\/td><td width=\"126\"><p>Tr\u00e8s bon \u00e0 excellent<\/p><\/td><td width=\"114\"><p>C\u2019est bien<\/p><\/td><td width=\"120\"><p>Excellent<\/p><\/td><\/tr><\/tbody><\/table><p>\u00a0<\/p><p>La fluorosilicone a une excellente r\u00e9sistance \u00e0 l\u2019oxydation, mais les SBRs ne sont que justes.<\/p><table><tbody><tr><td width=\"144\"><p>\u00a0<\/p><\/td><td width=\"120\"><p><strong>Caoutchouc naturel<\/strong><\/p><\/td><td width=\"126\"><p><strong>SBR<\/strong><\/p><\/td><td width=\"114\"><p><strong>Fluorosilicone<\/strong><\/p><\/td><\/tr><tr><td width=\"144\"><p><strong>Oxydation\u00a0 <\/strong><\/p><\/td><td width=\"120\"><p>C\u2019est bien<\/p><\/td><td width=\"126\"><p>Passable<\/p><\/td><td width=\"114\"><p>Excellent<\/p><\/td><\/tr><\/tbody><\/table><p>\u00a0<\/p><h3><strong>L\u2019ozone<\/strong><\/h3><p>L\u2019ozone est un gaz atmosph\u00e9rique qui rompt les liaisons mol\u00e9culaires d\u2019un compos\u00e9 et peut provoquer une forme de fissuration appel\u00e9e pourriture s\u00e8che.<\/p><p>L\u2019EPDM et le silicone ont tous deux une excellente r\u00e9sistance \u00e0 l\u2019ozone. Le nitrile n\u2019est que juste.<\/p><table><tbody><tr><td width=\"144\"><p>\u00a0<\/p><\/td><td width=\"120\"><p><strong>EPDM<\/strong><\/p><\/td><td width=\"126\"><p><strong>N\u00e9opr\u00e8ne<\/strong><\/p><\/td><td width=\"114\"><p><strong>Nitrile<\/strong><\/p><\/td><td width=\"120\"><p><strong>Silicone<\/strong><\/p><\/td><\/tr><tr><td width=\"144\"><p><strong>L\u2019ozone <\/strong><\/p><\/td><td width=\"120\"><p>Exceptionnel<\/p><\/td><td width=\"126\"><p>Tr\u00e8s bon \u00e0 excellent<\/p><\/td><td width=\"114\"><p>Passable<\/p><\/td><td width=\"120\"><p>Excellent<\/p><\/td><\/tr><\/tbody><\/table><p>\u00a0<\/p><p>La fluorosilicone est excellente. Le caoutchouc naturel et le SBR ont tous deux une faible r\u00e9sistance \u00e0 l\u2019ozone.<\/p><table><tbody><tr><td width=\"144\"><p>\u00a0<\/p><\/td><td width=\"120\"><p><strong>Caoutchouc naturel<\/strong><\/p><\/td><td width=\"126\"><p><strong>SBR<\/strong><\/p><\/td><td width=\"114\"><p><strong>Fluorosilicone<\/strong><\/p><\/td><\/tr><tr><td width=\"144\"><p><strong>L\u2019ozone<\/strong><\/p><\/td><td width=\"120\"><p>Pauvre<\/p><\/td><td width=\"126\"><p>Pauvre<\/p><\/td><td width=\"114\"><p>Excellent<\/p><\/td><\/tr><\/tbody><\/table><h3><strong>Vieillissement par la lumi\u00e8re du soleil<\/strong><\/h3><p>Les rayons ultraviolets (UV) du soleil d\u00e9truisent les liaisons mol\u00e9culaires d\u2019un compos\u00e9 et provoquent une perte de force, d\u2019\u00e9lasticit\u00e9 et de flexibilit\u00e9. Le vieillissement par la lumi\u00e8re du soleil d\u00e9crit \u00e0 quel point un caoutchouc r\u00e9siste aux dommages caus\u00e9s par les UV.<\/p><p>L\u2019EPDM et les silicones sont les meilleurs choix, mais le n\u00e9opr\u00e8ne est \u00e9galement tr\u00e8s bon. Le nitrile est pauvre.<\/p><table><tbody><tr><td width=\"144\"><p>\u00a0<\/p><\/td><td width=\"120\"><p><strong>EPDM<\/strong><\/p><\/td><td width=\"126\"><p><strong>N\u00e9opr\u00e8ne<\/strong><\/p><\/td><td width=\"114\"><p><strong>Nitrile<\/strong><\/p><\/td><td width=\"120\"><p><strong>Silicone<\/strong><\/p><\/td><\/tr><tr><td width=\"144\"><p><strong>Vieillissement par la lumi\u00e8re du soleil<\/strong><\/p><\/td><td width=\"120\"><p>Exceptionnel<\/p><\/td><td width=\"126\"><p>Tr\u00e8s bon<\/p><\/td><td width=\"114\"><p>Pauvre<\/p><\/td><td width=\"120\"><p>Excellent<\/p><\/td><\/tr><\/tbody><\/table><p><strong>\u00a0<\/strong><\/p><p>Le fluorosilicone est un tr\u00e8s bon choix de protection contre le vieillissement par le soleil. Le caoutchouc naturel et le SBR sont tous deux de mauvais choix.\u00a0<\/p><table><tbody><tr><td width=\"144\"><p>\u00a0<\/p><\/td><td width=\"120\"><p><strong>Caoutchouc naturel<\/strong><\/p><\/td><td width=\"126\"><p><strong>SBR<\/strong><\/p><\/td><td width=\"114\"><p><strong>Fluorosilicone<\/strong><\/p><\/td><\/tr><tr><td width=\"144\"><p><strong>Vieillissement par la lumi\u00e8re du soleil<\/strong><\/p><\/td><td width=\"120\"><p>Pauvre<\/p><\/td><td width=\"126\"><p>Pauvre<\/p><\/td><td width=\"114\"><p>Tr\u00e8s bon<\/p><\/td><\/tr><\/tbody><\/table><p><strong>\u00a0<\/strong><\/p><h2><strong>Propri\u00e9t\u00e9s thermiques\u00a0: Propri\u00e9t\u00e9s des mat\u00e9riaux pour les compos\u00e9s de caoutchouc<\/strong><\/h2><p><a href=\"https:\/\/www.elastoproxy.com\/thermal-electrical-properties\/\">Les propri\u00e9t\u00e9s<\/a> thermiques indiquent la performance d\u2019un compos\u00e9 sous ou comment il r\u00e9siste \u00e0 la chaleur et au froid.<\/p><h3><strong>Temp\u00e9rature de service<\/strong><\/h3><p><a href=\"https:\/\/www.elastoproxy.com\/engineered-products\/compound-selection\/service-temperature-of-elastomers\/\">Les temp\u00e9ratures de service<\/a> sont les temp\u00e9ratures les plus \u00e9lev\u00e9es et les plus basses auxquelles un compos\u00e9 peut \u00eatre utilis\u00e9.<\/p><p>Le silicone r\u00e9siste aux temp\u00e9ratures les plus froides et les plus chaudes ainsi qu\u2019\u00e0 la plus large gamme de temp\u00e9ratures.<\/p><table><tbody><tr><td width=\"144\"><p>\u00a0<\/p><\/td><td width=\"120\"><p><strong>EPDM<\/strong><\/p><\/td><td width=\"126\"><p><strong>N\u00e9opr\u00e8ne<\/strong><\/p><\/td><td width=\"114\"><p><strong>Nitrile<\/strong><\/p><\/td><td width=\"120\"><p><strong>Silicone<\/strong><\/p><\/td><\/tr><tr><td width=\"144\"><p><strong>Temp\u00e9ratures de service<\/strong><\/p><\/td><td width=\"120\"><p>-80\u00b0F \u00e0 +300\u00b0F<\/p><p>-62\u00b0C \u00e0 149\u00b0C<\/p><\/td><td width=\"126\"><p>-65\u00b0F \u00e0 +225\u00b0F<\/p><p>-54\u00b0C \u00e0 107\u00b0C<\/p><\/td><td width=\"114\"><p>-55\u00b0F \u00e0 +275\u00b0F<\/p><p>-48\u00b0C \u00e0 135\u00b0C<\/p><\/td><td width=\"120\"><p>-180\u00b0F \u00e0 525\u00b0F<\/p><p>-118\u00b0C \u00e0 274\u00b0C<\/p><\/td><\/tr><\/tbody><\/table><p>\u00a0<\/p><p>Le caoutchouc naturel r\u00e9siste aux temp\u00e9ratures les plus froides. Le fluorosilicone r\u00e9siste au plus chaudes temp\u00e9ratures.<\/p><table><tbody><tr><td width=\"144\"><p>\u00a0<\/p><\/td><td width=\"120\"><p><strong>Caoutchouc naturel<\/strong><\/p><\/td><td width=\"126\"><p><strong>SBR<\/strong><\/p><\/td><td width=\"114\"><p><strong>Fluorosilicone<\/strong><\/p><\/td><\/tr><tr><td width=\"144\"><p><strong>Temp\u00e9ratures de service<\/strong><\/p><\/td><td width=\"120\"><p>-85\u00b0F \u00e0 +158\u00b0F<\/p><p>-29\u00b0C \u00e0 70\u00b0C<\/p><\/td><td width=\"126\"><p>-40\u00b0F \u00e0 180\u00b0F<\/p><p>-40\u00b0C \u00e0 82\u00b0C<\/p><\/td><td width=\"114\"><p>-75\u00b0F \u00e0 400\u00b0F<\/p><p>-59\u00b0C \u00e0 204\u00b0C<\/p><\/td><\/tr><\/tbody><\/table><p>\u00a0<\/p><h3><strong>Vieillissement par la chaleur (limites de service continu)<\/strong><\/h3><p>Le vieillissement thermique, une r\u00e9duction des propri\u00e9t\u00e9s des mat\u00e9riaux, se produit naturellement lorsqu\u2019un compos\u00e9 est expos\u00e9 \u00e0 des temp\u00e9ratures de service normales au fil du temps.<\/p><p>Le silicone r\u00e9siste au vieillissement thermique dans la plus large gamme de temp\u00e9ratures, y compris les temp\u00e9ratures les plus extr\u00eames.<\/p><table><tbody><tr><td width=\"144\"><p>\u00a0<\/p><\/td><td width=\"120\"><p><strong>EPDM<\/strong><\/p><\/td><td width=\"126\"><p><strong>N\u00e9opr\u00e8ne<\/strong><\/p><\/td><td width=\"114\"><p><strong>Nitrile<\/strong><\/p><\/td><td width=\"120\"><p><strong>Silicone<\/strong><\/p><\/td><\/tr><tr><td width=\"144\"><p><strong>Vieillissement par la chaleur<\/strong><\/p><\/td><td width=\"120\"><p>-40\u00b0F \u00e0 293\u00b0F<\/p><p>-40\u00b0C \u00e0 145\u00b0C<\/p><\/td><td width=\"126\"><p>-40\u00b0F \u00e0 203\u00b0F<\/p><p>-20\u00b0C \u00e0 +95\u00b0C<\/p><\/td><td width=\"114\"><p>-4\u00b0F \u00e0 239\u00b0F<\/p><p>-20\u00b0C \u00e0 +115\u00b0C<\/p><\/td><td width=\"120\"><p>-148\u00b0F \u00e0 581\u00b0F<\/p><p>-100\u00b0C \u00e0 +305\u00b0C<\/p><\/td><\/tr><\/tbody><\/table><p>\u00a0<\/p><p>Le fluorosilicone a les meilleures performances de vieillissement thermique.<\/p><table><tbody><tr><td width=\"144\"><p>\u00a0<\/p><\/td><td width=\"120\"><p><strong>Caoutchouc naturel<\/strong><\/p><\/td><td width=\"126\"><p><strong>SBR<\/strong><\/p><\/td><td width=\"114\"><p><strong>Fluorosilicone<\/strong><\/p><\/td><\/tr><tr><td width=\"144\"><p><strong>Vieillissement par la chaleur<\/strong><\/p><\/td><td width=\"120\"><p>-40\u00b0F \u00e0 185<\/p><p>-40\u00b0C \u00e0 +85\u00b0C<\/p><\/td><td width=\"126\"><p>-40\u00b0F \u00e0 194\u00b0F<\/p><p>-40\u00b0C \u00e0 +90\u00b0C<\/p><\/td><td width=\"114\"><p>-148\u00b0F \u00e0 392\u00b0F<\/p><p>-100\u00b0C \u00e0 200\u00b0C<\/p><\/td><\/tr><\/tbody><\/table><p>\u00a0<\/p><h2><strong>Propri\u00e9t\u00e9s \u00e9lectriques: Propri\u00e9t\u00e9s du mat\u00e9riau pour les compos\u00e9s de caoutchouc<\/strong><\/h2><p><a href=\"https:\/\/www.elastoproxy.com\/thermal-electrical-properties\/\">Les propri\u00e9t\u00e9s \u00e9lectriques<\/a> font r\u00e9f\u00e9rence \u00e0 la capacit\u00e9 d\u2019un mat\u00e9riau \u00e0 conduire ou \u00e0 r\u00e9sister au flux d\u2019\u00e9lectricit\u00e9.\u00a0\u00a0<\/p><h3><strong>Force di\u00e9lectrique<\/strong><\/h3><p>La r\u00e9sistance di\u00e9lectrique d\u00e9crit la r\u00e9sistance d\u2019un compos\u00e9 \u00e0 la d\u00e9gradation di\u00e9lectrique, le point auquel un mat\u00e9riau isolant cesse d\u2019emp\u00eacher le courant de circuler sous contrainte \u00e9lectrique.<\/p><p>L\u2019EPDM a la meilleure force di\u00e9lectrique. Le nitrile en a la pire. Le n\u00e9opr\u00e8ne et le silicone sont tous deux bons.<\/p><table><tbody><tr><td width=\"144\"><p>\u00a0<\/p><\/td><td width=\"120\"><p><strong>EPDM<\/strong><\/p><\/td><td width=\"126\"><p><strong>N\u00e9opr\u00e8ne<\/strong><\/p><\/td><td width=\"114\"><p><strong>Nitrile<\/strong><\/p><\/td><td width=\"120\"><p><strong>Silicone<\/strong><\/p><\/td><\/tr><tr><td width=\"144\"><p><strong>Force di\u00e9lectrique<\/strong><\/p><\/td><td width=\"120\"><p>Excellent<\/p><\/td><td width=\"126\"><p>C\u2019est bien<\/p><\/td><td width=\"114\"><p>Pauvre<\/p><\/td><td width=\"120\"><p>C\u2019est bien<\/p><\/td><\/tr><\/tbody><\/table><p>\u00a0<\/p><p>Le caoutchouc naturel et le SBR ont tous deux une excellente r\u00e9sistance di\u00e9lectrique.\u00a0 La fluorosilicone est bonne.<\/p><table><tbody><tr><td width=\"144\"><p>\u00a0<\/p><\/td><td width=\"120\"><p><strong>Caoutchouc naturel<\/strong><\/p><\/td><td width=\"126\"><p><strong>SBR<\/strong><\/p><\/td><td width=\"114\"><p><strong>Fluorosilicone<\/strong><\/p><\/td><\/tr><tr><td width=\"144\"><p><strong>Force di\u00e9lectrique<\/strong><\/p><\/td><td width=\"120\"><p>Excellent<\/p><\/td><td width=\"126\"><p>Excellent<\/p><\/td><td width=\"114\"><p>C\u2019est bien<\/p><\/td><\/tr><\/tbody><\/table><p>\u00a0<\/p><h3><strong>Isolation \u00e9lectrique<\/strong><\/h3><p>L\u2019isolation \u00e9lectrique d\u00e9crit la r\u00e9sistance d\u2019un compos\u00e9 \u00e0 l\u2019\u00e9coulement du courant \u00e9lectrique. C\u2019est diff\u00e9rent de la force di\u00e9lectrique, qui est fonction de la tension.\u00a0\u00a0\u00a0<\/p><p>L\u2019EPDM et le silicone ont tous deux une excellente isolation \u00e9lectrique. Le nitrile est cependant un mauvais isolant \u00e9lectrique.<\/p><table><tbody><tr><td width=\"144\"><p>\u00a0<\/p><\/td><td width=\"120\"><p><strong>EPDM<\/strong><\/p><\/td><td width=\"126\"><p><strong>N\u00e9opr\u00e8ne<\/strong><\/p><\/td><td width=\"114\"><p><strong>Nitrile<\/strong><\/p><\/td><td width=\"120\"><p><strong>Silicone<\/strong><\/p><\/td><\/tr><tr><td width=\"144\"><p><strong>Isolation \u00e9lectrique<\/strong><\/p><\/td><td width=\"120\"><p>Excellent<\/p><\/td><td width=\"126\"><p>Passable \u00e0 bon<\/p><\/td><td width=\"114\"><p>Pauvre<\/p><\/td><td width=\"120\"><p>Excellent<\/p><\/td><\/tr><\/tbody><\/table><p>\u00a0<\/p><p>Le fluorosilcione est le meilleur isolant \u00e9lectrique, mais les trois compos\u00e9s offrent de fortes performances.<\/p><table><tbody><tr><td width=\"144\"><p>\u00a0<\/p><\/td><td width=\"120\"><p><strong>Caoutchouc naturel<\/strong><\/p><\/td><td width=\"126\"><p><strong>SBR<\/strong><\/p><\/td><td width=\"114\"><p><strong>Fluorosilicone<\/strong><\/p><\/td><\/tr><tr><td width=\"144\"><p><strong>Isolation \u00e9lectrique<\/strong><\/p><\/td><td width=\"120\"><p>Tr\u00e8s bon \u00e0 excellent<\/p><\/td><td width=\"126\"><p>Tr\u00e8s bon \u00e0 excellent<\/p><\/td><td width=\"114\"><p>Excellent<\/p><\/td><\/tr><\/tbody><\/table><p>\u00a0<\/p><h2><strong>Demandez \u00e0 Elasto Proxy pour obtenir de l\u2019aide sur la comparaison des compos\u00e9s<\/strong><\/h2><p>\u00cates-vous ing\u00e9nieur\u00a0? Avez-vous besoin d\u2019aide pour comparer les compos\u00e9s pour l\u2019\u00e9tanch\u00e9it\u00e9 industrielle\u00a0? Pour plus d\u2019informations sur la s\u00e9lection des compos\u00e9s, <a href=\"https:\/\/www.elastoproxy.com\/contact-us\/\">contactez Elasto Proxy<\/a>.\u00a0<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Comparez les propri\u00e9t\u00e9s des mat\u00e9riaux pour l\u2019EPDM, le nitrile, le n\u00e9opr\u00e8ne et le silicone, ainsi que pour le caoutchouc naturel, le SBR et la 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