{"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\/sk\/blog\/news\/radiatory-dlya-protsessorov-mogut-stat-plastikovymi-i-eto-ne-zagovor-proizvoditelej","title":{"rendered":"Chladi\u010de pre procesory m\u00f4\u017eu by\u0165 plastov\u00e9 a to nie je sprisahanie v\u00fdrobcov","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Skupina vedcov z Massachusettsk\u00e9ho technologick\u00e9ho in\u0161tit\u00fatu pokra\u010duje v \u00faspe\u0161nej pr\u00e1ci vo ve\u013emi zauj\u00edmavom smere. Pred deviatimi rokmi v \u010dasopise Nature Communications zamestnanci MIT <\/a>publikovali spr\u00e1vu<\/a><\/noindex>, v ktorej informovali o v\u00fdvoji zauj\u00edmavej technol\u00f3gie pre narovn\u00e1vanie molek\u00fal polyetyl\u00e9nu. V be\u017enom stave polyetyl\u00e9n, podobne ako in\u00e9 polym\u00e9ry, vyzer\u00e1 ako ka\u0161a z mnoh\u00fdch hrudiek zlepen\u00fdch \u0161pagiet. To rob\u00ed polym\u00e9r skvel\u00fdm izol\u00e1torom tepla, no vedcov v\u017edy zauj\u00edmalo nie\u010do nezvy\u010dajn\u00e9. Kie\u017eby sa dalo vyrobi\u0165 polym\u00e9r, ktor\u00fd by pren\u00e1\u0161al teplo nie hor\u0161ie ako kovy! A na to je potrebn\u00e9 len nie\u010do m\u00e1lo \u2013 narovna\u0165 molekuly polym\u00e9ru, aby mohli pren\u00e1\u0161a\u0165 teplo cez monokan\u00e1ly od zdroja k miestu rozpt\u00fdlenia. Experiment bol \u00faspe\u0161n\u00fd. Vedci dok\u00e1zali vytvori\u0165 samostatn\u00e9 vl\u00e1kna polyetyl\u00e9nu s vynikaj\u00facou tepelnou vodivos\u0165ou. Av\u0161ak na priemyseln\u00e9 nasadenie to nesta\u010dilo.<\/p>\n

\"Chladi\u010de<\/p>\n

Dnes t\u00e1 ist\u00e1 skupina vedcov z MIT zverejnila nov\u00fa spr\u00e1vu o tepelne vodiv\u00fdch polym\u00e9roch. Po uplynut\u00ed deviatich rokov bola vykonan\u00e1 ve\u013ek\u00e1 pr\u00e1ca. Namiesto v\u00fdroby samostatn\u00fdch vl\u00e1kien vedci <\/a>vyvinuli a vytvorili<\/a><\/noindex> experiment\u00e1lnu jednotku na v\u00fdrobu filmov\u00e9ho tepelne vodiv\u00e9ho povlaku. Navy\u0161e, na v\u00fdrobu tepelne vodiv\u00fdch filmov sa pou\u017eilo nie unik\u00e1tne, ako pred deviatimi rokmi suroviny, ale be\u017en\u00fd komer\u010dn\u00fd pr\u00e1\u0161kov\u00fd polyetyl\u00e9n pre priemysel.<\/p>\n

V experiment\u00e1lnej in\u0161tal\u00e1cii sa pr\u00e1\u0161ok polyetyl\u00e9nu rozp\u00fa\u0161\u0165a v kvapaline a potom sa zlo\u017eenie nastrieka na dosku, ochladen\u00fa kvapaln\u00fdm dus\u00edkom. N\u00e1sledne sa polotovar zahrieva a \u0165ah\u00e1 na valcovac\u00edch strojoch do stavu tenkej f\u00f3lie, hr\u00fabky ako obal. Merania uk\u00e1zali, \u017ee vyroben\u00e1 tepeln\u00e1 vodivos\u0165 polyetyl\u00e9novej f\u00f3lie m\u00e1 koeficient tepelnej vodivosti 60 W\/(m\u00b7K). Pre porovnanie, pre oce\u013e je tento ukazovate\u013e rovn\u00fd 15 W\/(m\u00b7K), a pre be\u017en\u00fd plast je to 0,1\u20130,5 W\/(m\u00b7K). Najlep\u0161ou tepelnou vodivos\u0165ou sa m\u00f4\u017ee p\u00fd\u0161i\u0165 diamant \u2015 2000 W\/(m\u00b7K), ale predbehn\u00fa\u0165 kovy v tepelnej vodivosti je taktie\u017e ve\u013emi dobr\u00e9.<\/p>\n

<\/center><\/p>\n

Tepelne vodiv\u00e9 polym\u00e9ry maj\u00fa aj mno\u017estvo in\u00fdch d\u00f4le\u017eit\u00fdch vlastnost\u00ed. Tepeln\u00e1 energia sa pren\u00e1\u0161a striktne jedn\u00fdm smerom. Predstavte si laptop alebo smartf\u00f3n, ktor\u00e9 odv\u00e1dzaj\u00fa teplo z procesorov bez akt\u00edvneho chladenia. In\u00fdmi v\u00fdznamn\u00fdmi oblas\u0165ami pou\u017eitia tepelne vodiv\u00e9ho plastu m\u00f4\u017eu by\u0165 automobily, chladni\u010dky a in\u00e9 zariadenia. Plast sa neboj\u00ed kor\u00f3zie, nevedie elektrinu, je \u013eahk\u00fd a odoln\u00fd. Zavedenie tak\u00fdchto materi\u00e1lov do praxe m\u00f4\u017ee podnieti\u0165 rozvoj priemyslu v mnoh\u00fdch oblastiach. Radi by sme sa do\u010dkali tohto svetl\u00e9ho d\u0148a u\u017e za dev\u00e4\u0165 rokov.<\/p>\n

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Zdroj: 3dnews.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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