{"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\/cs\/blog\/news\/radiatory-dlya-protsessorov-mogut-stat-plastikovymi-i-eto-ne-zagovor-proizvoditelej","title":{"rendered":"Chladi\u010de pro procesory mohou b\u00fdt plastov\u00e9 a to nen\u00ed konspirace v\u00fdrobc\u016f.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Skupina v\u011bdc\u016f z Massachusetsk\u00e9ho technologick\u00e9ho institutu pokra\u010duje v \u00fasp\u011b\u0161n\u00e9 pr\u00e1ci na velmi zaj\u00edmav\u00e9m sm\u011bru. P\u0159ed dev\u00edti lety zve\u0159ejnili zam\u011bstnanci MIT v \u010dasopise Nature Communications <\/a>zpr\u00e1vu<\/a><\/noindex>, ve kter\u00e9 ozn\u00e1mili v\u00fdvoj zaj\u00edmav\u00e9 technologie na narovn\u00e1v\u00e1n\u00ed molekul polyethylenu. V norm\u00e1ln\u00edm stavu vypad\u00e1 polyetylen, stejn\u011b jako jin\u00e9 polymery, jako ka\u0161e z mnoha kousk\u016f slepen\u00fdch \u0161paget. To d\u011bl\u00e1 polymer skv\u011bl\u00fdm teplosvodn\u00fdm izolantem, ale v\u011bdci v\u017edy tou\u017eili po n\u011b\u010dem v\u00fdjime\u010dn\u00e9m. Bylo by skv\u011bl\u00e9 vytvo\u0159it polymer, kter\u00fd by vedl teplo stejn\u011b dob\u0159e jako kovy! A je k tomu pot\u0159eba vlastn\u011b jen jednoho \u2015 narovnat molekuly polymeru, aby mohly p\u0159es monokan\u00e1ly p\u0159en\u00e1\u0161et teplo od zdroje k m\u00edstu rozptylu. Experiment byl \u00fasp\u011b\u0161n\u00fd. V\u011bdc\u016fm se poda\u0159ilo vytvo\u0159it jednotliv\u00e1 vl\u00e1kna polyethylenu s vynikaj\u00edc\u00edmi tepeln\u00fdmi vlastnostmi. Ale pro zaveden\u00ed do pr\u016fmyslu to bylo m\u00e1lo.<\/p>\n

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

Dnes stejn\u00e1 skupina v\u011bdc\u016f z MIT zve\u0159ejnila novou zpr\u00e1vu o tepeln\u011b vodiv\u00fdch polymerech. B\u011bhem uplynul\u00fdch dev\u00edti let byla vykon\u00e1na velk\u00e1 pr\u00e1ce. M\u00edsto v\u00fdroby jednotliv\u00fdch vl\u00e1ken v\u011bdci <\/a>vyvinuli a vytvo\u0159ili<\/a><\/noindex> experiment\u00e1ln\u00ed za\u0159\u00edzen\u00ed pro v\u00fdrobu filmov\u00e9ho tepeln\u011b vodiv\u00e9ho povlaku. Nav\u00edc pro vytvo\u0159en\u00ed tepeln\u011b vodiv\u00fdch f\u00f3li\u00ed byl pou\u017eit nikoli unik\u00e1tn\u00ed, jako p\u0159ed dev\u00edti lety surovina, ale b\u011b\u017en\u00fd komer\u010dn\u00ed pr\u00e1\u0161kov\u00fd polyetylen pro pr\u016fmyslov\u00e9 pou\u017eit\u00ed.<\/p>\n

V pokro\u010dil\u00e9 instalaci se pr\u00e1\u0161ek polyetylenu rozpou\u0161t\u00ed v kapalin\u011b a pot\u00e9 se sm\u011bs nast\u0159\u00edkne na desku chlazenou kapaln\u00fdm dus\u00edkem. Pot\u00e9 se polotovar zah\u0159eje a vyt\u00e1hne na v\u00e1lcov\u00e9 lince do stavu tenk\u00e9ho filmu, tlou\u0161\u0165ky s obalov\u00fdm. M\u011b\u0159en\u00ed uk\u00e1zala, \u017ee vyroben\u00e1 t\u00edmto zp\u016fsobem teplovodiv\u00e1 polyetylenov\u00e1 f\u00f3lie m\u00e1 koeficient tepeln\u00e9 vodivosti 60 W\/(m\u00b7K). Pro srovn\u00e1n\u00ed, pro ocel tento ukazatel \u010din\u00ed 15 W\/(m\u00b7K), a pro b\u011b\u017en\u00fd plast je to 0,1\u20130,5 W\/(m\u00b7K). Nejlep\u0161\u00ed tepeln\u00e9 vodivosti se m\u016f\u017ee pochlubit diamant \u2013 2000 W\/(m\u00b7K), ale p\u0159ekonat v tepeln\u00e9 vodivosti kovy \u2013 to je tak\u00e9 dobr\u00e9.<\/p>\n

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

Tepeln\u011b vodiv\u00fd polymer m\u00e1 tak\u00e9 \u0159adu dal\u0161\u00edch d\u016fle\u017eit\u00fdch vlastnost\u00ed. Teplo se p\u0159en\u00e1\u0161\u00ed v\u00fdhradn\u011b jedn\u00edm sm\u011brem. P\u0159edstavte si notebook nebo chytr\u00fd telefon, kter\u00e9 odv\u00e1d\u011bj\u00ed teplo od procesor\u016f bez aktivn\u00edho chladic\u00edho syst\u00e9mu. Dal\u0161\u00edmi v\u00fdznamn\u00fdmi oblastmi pou\u017eit\u00ed tepeln\u011b vodiv\u00e9ho plastu mohou b\u00fdt automobily, chladic\u00ed za\u0159\u00edzen\u00ed a dal\u0161\u00ed. Plast se neboj\u00ed koroze, nevede elektrick\u00fd proud, je lehk\u00fd a odoln\u00fd. Zaveden\u00ed takov\u00fdch materi\u00e1l\u016f do praxe m\u016f\u017ee poskytnout impuls k rozvoji pr\u016fmyslu v \u0159ad\u011b odv\u011btv\u00ed. R\u00e1di bychom, aby na tento jasn\u00fd den nebylo t\u0159eba \u010dekat je\u0161t\u011b dev\u011bt let.<\/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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