{"id":32845,"date":"2019-10-31T21:49:15","date_gmt":"2019-10-31T18:49:15","guid":{"rendered":"https:\/\/prohoster.info\/blog\/radiatory-dlya-protsessorov-mogut-stat-plastikovymi-i-eto-ne-zagovor-proizvoditelej\/"},"modified":"2019-10-31T21:49:15","modified_gmt":"2019-10-31T18:49:15","slug":"radiatory-dlya-protsessorov-mogut-stat-plastikovymi-i-eto-ne-zagovor-proizvoditelej","status":"publish","type":"post","link":"https:\/\/prohoster.info\/it\/blog\/news\/radiatory-dlya-protsessorov-mogut-stat-plastikovymi-i-eto-ne-zagovor-proizvoditelej","title":{"rendered":"I radiatori per processori possono diventare di plastica e non \u00e8 una cospirazione dei produttori","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Un gruppo di scienziati del Massachusetts Institute of Technology continua a lavorare con successo in un'area molto interessante. Nove anni fa, nella rivista Nature Communications, i ricercatori del MIT <noindex><\/a>hanno pubblicato un rapporto<\/a><\/noindex>, nel quale hanno comunicato lo sviluppo di una tecnologia interessante per l'allineamento delle molecole di polietilene. In condizioni normali, il polietilene, come altri polimeri, assomiglia a una zuppa di spaghetti attorcigliati. Questo rende il polimero un ottimo isolante termico, e gli scienziati hanno sempre cercato qualcosa di diverso. Che bello sarebbe avere un polimero in grado di condurre calore non peggio dei metalli! E per questo basta poco: allineare le molecole del polimero in modo che possano trasferire il calore da una fonte a un luogo di dissipazione tramite monocanali. L'esperimento ha avuto successo. Gli scienziati sono riusciti a creare singole fibre di polietilene con eccellenti propriet\u00e0 termiche. Ma per un'applicazione industriale, questo non era sufficiente.<\/p>\n<p><img decoding=\"async\" alt=\"I radiatori per processori possono diventare di plastica e non \u00e8 una cospirazione dei produttori\" src=\"\/wp-content\/uploads\/2019\/05\/7c3ae585ced639a710913d3fd8e9698d.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p>Oggi lo stesso gruppo di scienziati del MIT ha pubblicato un nuovo rapporto sui polimeri termoconduttivi. Negli ultimi nove anni \u00e8 stato fatto un grande lavoro. Invece di produrre fibre singole, i ricercatori <noindex><\/a>hanno sviluppato e creato<\/a><\/noindex> un impianto pilota per produrre un rivestimento termoconduttivo in pellicola. Inoltre, per creare le pellicole termoconduttive \u00e8 stato utilizzato non un materiale unico, come nove anni fa, ma un comune polietilene in polvere commerciale per l'industria.<\/p>\n<p>Nell'installazione esperta, la polvere di polietilene si scioglie in un liquido e poi la miscela viene spruzzata su una piastra raffreddata con azoto liquido. Dopo di che, il semilavorato viene riscaldato ed allungato su una macchina di laminazione fino a ottenere uno stato di pellicola sottile, dello spessore di una pellicola di imballaggio. Le misurazioni hanno mostrato che la pellicola di polietilene conduttiva termicamente prodotta in questo modo ha un coefficiente di conducibilit\u00e0 termica di 60 W\/(m\u00b7K). A titolo di confronto, per l'acciaio questo valore \u00e8 di 15 W\/(m\u00b7K), mentre per la plastica normale \u00e8 di 0,1\u20130,5 W\/(m\u00b7K). Il migliore conduttore di calore \u00e8 il diamante, con 2000 W\/(m\u00b7K), ma superare la conducibilit\u00e0 termica dei metalli \u00e8 comunque un ottimo risultato.<\/p>\n<p><center><\/center><\/p>\n<p>Il polimero termoconduttivo presenta anche una serie di altre qualit\u00e0 importanti. Infatti, il calore si trasferisce esclusivamente in una direzione. Immaginate un laptop o uno smartphone che dissipano il calore dai processori senza un sistema di raffreddamento attivo. Altre importanti applicazioni della plastica conduttiva potrebbero includere automobili, impianti frigoriferi e altro. La plastica non teme la corrosione, non conduce elettricit\u00e0, \u00e8 leggera e resistente. L'introduzione di materiali simili nella vita quotidiana potrebbe dare impulso allo sviluppo dell'industria in molti settori. Speriamo che non ci vogliano altri nove anni per arrivare a questo giorno luminoso.<\/p>\n<p><center><\/p>\n<p><\/center><\/p>\n<p>\t\t\t\t<center><br \/>\n\t\t\t\t\t\t\t\t<\/center><br \/>Fonte: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/3dnews.ru\/986734\">3dnews.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0413\u0440\u0443\u043f\u043f\u0430 \u0443\u0447\u0451\u043d\u044b\u0445 \u0438\u0437 \u041c\u0430\u0441\u0441\u0430\u0447\u0443\u0441\u0435\u0442\u0441\u043a\u043e\u0433\u043e \u0442\u0435\u0445\u043d\u043e\u043b\u043e\u0433\u0438\u0447\u0435\u0441\u043a\u043e\u0433\u043e \u0438\u043d\u0441\u0442\u0438\u0442\u0443\u0442\u0430 \u043f\u0440\u043e\u0434\u043e\u043b\u0436\u0430\u0435\u0442 \u0443\u0441\u043f\u0435\u0448\u043d\u043e \u0440\u0430\u0431\u043e\u0442\u0430\u0442\u044c \u0432 \u043e\u0447\u0435\u043d\u044c \u0438\u043d\u0442\u0435\u0440\u0435\u0441\u043d\u043e\u043c \u043d\u0430\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u0438. \u0414\u0435\u0432\u044f\u0442\u044c \u043b\u0435\u0442 \u043d\u0430\u0437\u0430\u0434 \u0432 \u0436\u0443\u0440\u043d\u0430\u043b\u0435 Nature Communications \u0441\u043e\u0442\u0440\u0443\u0434\u043d\u0438\u043a\u0438 MIT \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043b\u0438 \u0434\u043e\u043a\u043b\u0430\u0434, \u0432 \u043a\u043e\u0442\u043e\u0440\u043e\u043c \u0441\u043e\u043e\u0431\u0449\u0438\u043b\u0438 \u043e \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0435 \u0438\u043d\u0442\u0435\u0440\u0435\u0441\u043d\u043e\u0439 \u0442\u0435\u0445\u043d\u043e\u043b\u043e\u0433\u0438\u0438 \u043f\u043e \u0440\u0430\u0441\u043f\u0440\u044f\u043c\u043b\u0435\u043d\u0438\u044e \u043c\u043e\u043b\u0435\u043a\u0443\u043b \u043f\u043e\u043b\u0438\u044d\u0442\u0438\u043b\u0435\u043d\u0430. \u0412 \u043e\u0431\u044b\u0447\u043d\u043e\u043c \u0441\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u0438 \u043f\u043e\u043b\u0438\u044d\u0442\u0438\u043b\u0435\u043d, \u043a\u0430\u043a \u0438 \u0434\u0440\u0443\u0433\u0438\u0435 \u043f\u043e\u043b\u0438\u043c\u0435\u0440\u044b, \u043f\u043e\u0445\u043e\u0436 \u043d\u0430 \u043a\u0430\u0448\u0443 \u0438\u0437 \u043c\u043d\u043e\u0436\u0435\u0441\u0442\u0432\u0430 \u043a\u043e\u043c\u043a\u043e\u0432 \u0441\u043b\u0438\u043f\u0448\u0438\u0445\u0441\u044f \u0441\u043f\u0430\u0433\u0435\u0442\u0442\u0438. \u042d\u0442\u043e \u0434\u0435\u043b\u0430\u0435\u0442 \u043f\u043e\u043b\u0438\u043c\u0435\u0440 \u043e\u0442\u043b\u0438\u0447\u043d\u044b\u043c [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":24619,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-32845","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.1.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0413\u0440\u0443\u043f\u043f\u0430 \u0443\u0447\u0451\u043d\u044b\u0445 \u0438\u0437 \u041c\u0430\u0441\u0441\u0430\u0447\u0443\u0441\u0435\u0442\u0441\u043a\u043e\u0433\u043e \u0442\u0435\u0445\u043d\u043e\u043b\u043e\u0433\u0438\u0447\u0435\u0441\u043a\u043e\u0433\u043e \u0438\u043d\u0441\u0442\u0438\u0442\u0443\u0442\u0430 \u043f\u0440\u043e\u0434\u043e\u043b\u0436\u0430\u0435\u0442 \u0443\u0441\u043f\u0435\u0448\u043d\u043e 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