{"id":212451,"date":"2025-07-15T06:35:57","date_gmt":"2025-07-15T10:35:57","guid":{"rendered":"https:\/\/news.canadamotorjobs.com\/?p=212451"},"modified":"2025-07-15T06:40:29","modified_gmt":"2025-07-15T10:40:29","slug":"luniversite-harvard-invente-un-caoutchouc-dix-fois-plus-resistant","status":"publish","type":"post","link":"https:\/\/news.canadamotorjobs.com\/fr\/luniversite-harvard-invente-un-caoutchouc-dix-fois-plus-resistant\/","title":{"rendered":"L\u2019universit\u00e9 Harvard invente un caoutchouc dix fois plus r\u00e9sistant"},"content":{"rendered":"<\/p>\n

Une \u00e9quipe de chercheurs de la Harvard School of Engineering and Applied Sciences (SEAS) a mis au point un nouveau proc\u00e9d\u00e9 de fabrication du caoutchouc naturel qui le rend jusqu\u2019\u00e0 dix fois plus r\u00e9sistant aux fissures et aux d\u00e9formations. Et tout cela, gr\u00e2ce \u00e0 une id\u00e9e \u00e9tonnamment simple : adoucir la vulcanisation.<\/p>\n

Vulcanisation douce, r\u00e9sistance accrue<\/strong><\/p>\n

Depuis l\u2019\u00e9poque de Charles Goodyear en 1844, la vulcanisation, ce proc\u00e9d\u00e9 de chauffage du caoutchouc avec des agents chimiques, n\u2019a pas beaucoup chang\u00e9. Il en r\u00e9sulte des cha\u00eenes de polym\u00e8res courtes et rigides, solides, mais vuln\u00e9rables aux fissures.\u00a0<\/p>\n

Mais les scientifiques de Harvard ont eu une id\u00e9e : ralentir le processus pour pr\u00e9server les longues cha\u00eenes mol\u00e9culaires, cr\u00e9ant des structures internes plus flexibles, comparables \u00e0 des \u00ab nouilles spaghetti \u00bb.\u00a0<\/p>\n

<\/p>\n

L\u2019universit\u00e9 Harvard invente un caoutchouc dix fois plus r\u00e9sistant | Auto123.com<\/figcaption><\/figure>\n

Le r\u00e9sultat ? Une r\u00e9sistance quatre fois sup\u00e9rieure d\u00e8s les premiers tests, et jusqu\u2019\u00e0 dix fois meilleures lors de conditions de stress prolong\u00e9.<\/p>\n

\u00ab On esp\u00e9rait doubler la performance, pas la multiplier par dix \u00bb, a d\u00e9clar\u00e9 Zheqi Chen, co-auteur principal du rapport qui a d\u00e9coul\u00e9 du projet.\u00a0<\/p>\n

Pas encore pour les pneus, mais id\u00e9al pour les pi\u00e8ces fragiles<\/strong><\/p>\n

Ce nouveau mat\u00e9riau n\u2019est pas encore pr\u00eat \u00e0 remplacer les pneus. Le rendement est encore trop faible, en raison d\u2019une forte \u00e9vaporation de l\u2019eau pendant le traitement. Toutefois, les applications fines comme les gants ou les joints d\u2019\u00e9tanch\u00e9it\u00e9 pourraient en b\u00e9n\u00e9ficier rapidement.\u00a0<\/p>\n

Et si la technologie peut \u00eatre peaufin\u00e9e pour une utilisation plus rude, l\u2019industrie automobile pourrait en tirer parti dans 10 \u00e0 15 ans, notamment dans les r\u00e9gions chaudes o\u00f9 les mat\u00e9riaux classiques craquent avec le temps.<\/p>\n

<\/p>\n

L\u2019universit\u00e9 Harvard invente un caoutchouc dix fois plus r\u00e9sistant | Auto123.com<\/figcaption><\/figure>\n

Contenu original de auto123<\/a>.<\/p>\n

Le texte L\u2019universit\u00e9 Harvard invente un caoutchouc dix fois plus r\u00e9sistant<\/a> provient de L’annuel de l’automobile – Actualit\u00e9 automobile<\/a><\/p>\n

<\/p>\n","protected":false},"excerpt":{"rendered":"

Une \u00e9quipe de chercheurs de la Harvard School of Engineering and Applied Sciences (SEAS) a mis au point un nouveau proc\u00e9d\u00e9 de fabrication du caoutchouc naturel qui le rend jusqu\u2019\u00e0 dix fois plus r\u00e9sistant aux fissures et aux d\u00e9formations. Et tout cela, gr\u00e2ce \u00e0 une id\u00e9e \u00e9tonnamment simple : adoucir la vulcanisation. Vulcanisation douce, r\u00e9sistance […]<\/p>\n","protected":false},"author":8,"featured_media":212453,"comment_status":"close","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[101],"tags":[],"yoast_head":"\nL\u2019universit\u00e9 Harvard invente un caoutchouc dix fois plus r\u00e9sistant - CanadaMotorJobs.com<\/title>\n<meta name=\"description\" content=\"L\u2019universit\u00e9 Harvard invente un caoutchouc dix fois plus r\u00e9sistant - Benoit Charette - Annuel automobile - CanadaMotorJobs.com.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<meta property=\"og:locale\" content=\"fr_CA\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"L\u2019universit\u00e9 Harvard invente un caoutchouc dix fois plus r\u00e9sistant - 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Il a fait ses classes au c\u00f4t\u00e9 de Daniel H\u00e9raud et au Carnet de route de 1992 \u00e0 2001. Il est fondateur, copropri\u00e9taire et r\u00e9dacteur en chef de L\u2019Annuel de l\u2019automobile, qu\u2019il publie depuis 2001. Il a anim\u00e9 les \u00e9missions RPM et RPM+ sur V et les L\u00e9gendes de la route sur Historia. \u00c0 la radio depuis 1986, il reprend l\u2019antenne cette ann\u00e9e sur les ondes de Cogeco et participe pour la deuxi\u00e8me ann\u00e9e \u00e0 l\u2019\u00e9mission Passion Auto sur RDS en plus de mettre en ligne le site Web officiel de L\u2019Annuel de l\u2019automobile sur annuelauto.ca.","sameAs":["https:\/\/annuelauto.ca\/"],"url":"https:\/\/news.canadamotorjobs.com\/fr\/author\/benoit-charette\/"}]}},"_links":{"self":[{"href":"https:\/\/news.canadamotorjobs.com\/fr\/wp-json\/wp\/v2\/posts\/212451"}],"collection":[{"href":"https:\/\/news.canadamotorjobs.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/news.canadamotorjobs.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/news.canadamotorjobs.com\/fr\/wp-json\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/news.canadamotorjobs.com\/fr\/wp-json\/wp\/v2\/comments?post=212451"}],"version-history":[{"count":3,"href":"https:\/\/news.canadamotorjobs.com\/fr\/wp-json\/wp\/v2\/posts\/212451\/revisions"}],"predecessor-version":[{"id":212478,"href":"https:\/\/news.canadamotorjobs.com\/fr\/wp-json\/wp\/v2\/posts\/212451\/revisions\/212478"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/news.canadamotorjobs.com\/fr\/wp-json\/wp\/v2\/media\/212453"}],"wp:attachment":[{"href":"https:\/\/news.canadamotorjobs.com\/fr\/wp-json\/wp\/v2\/media?parent=212451"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/news.canadamotorjobs.com\/fr\/wp-json\/wp\/v2\/categories?post=212451"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/news.canadamotorjobs.com\/fr\/wp-json\/wp\/v2\/tags?post=212451"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}