{"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\/pt\/blog\/news\/radiatory-dlya-protsessorov-mogut-stat-plastikovymi-i-eto-ne-zagovor-proizvoditelej","title":{"rendered":"Radiadores para processadores podem ser feitos de pl\u00e1stico e isso n\u00e3o \u00e9 uma conspira\u00e7\u00e3o dos fabricantes.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Um grupo de cientistas do Instituto de Tecnologia de Massachusetts continua a trabalhar com sucesso em uma dire\u00e7\u00e3o muito interessante. Nove anos atr\u00e1s, na revista Nature Communications, os funcion\u00e1rios do MIT <\/a>publicaram um relat\u00f3rio<\/a><\/noindex>, no qual relataram o desenvolvimento de uma tecnologia interessante para endireitar mol\u00e9culas de polietileno. Em seu estado habitual, o polietileno, como outros pol\u00edmeros, se assemelha a um mingau de v\u00e1rios torr\u00f5es de espaguete grudados. Isso faz com que o pol\u00edmero seja um excelente isolante t\u00e9rmico, e os cientistas sempre desejaram algo diferente. Que tal criar um pol\u00edmero que pudesse conduzir calor t\u00e3o bem quanto os metais? E para isso, s\u00f3 \u00e9 necess\u00e1rio endireitar as mol\u00e9culas do pol\u00edmero para que possam transportar calor de forma eficiente de uma fonte para um ponto de dissipa\u00e7\u00e3o. O experimento foi bem-sucedido. Os cientistas conseguiram criar fibras de polietileno separadas com excelente condutividade t\u00e9rmica. Mas isso era insuficiente para a implementa\u00e7\u00e3o na ind\u00fastria.<\/p>\n

\"Radiadores<\/p>\n

Hoje, o mesmo grupo de cientistas do MIT publicou um novo relat\u00f3rio sobre pol\u00edmeros condutores de calor. Nos \u00faltimos nove anos, muito trabalho foi realizado. Em vez de fabricar fibras separadas, os cientistas <\/a>desenvolveram e criaram<\/a><\/noindex> uma instala\u00e7\u00e3o piloto para a produ\u00e7\u00e3o de revestimentos t\u00e9rmicos em pel\u00edcula. Al\u00e9m disso, para a cria\u00e7\u00e3o de filmes condutores de calor, foi utilizado n\u00e3o um material \u00fanico, como nove anos atr\u00e1s, mas um polietileno em p\u00f3 comercial comum da ind\u00fastria.<\/p>\n

Em uma instala\u00e7\u00e3o experimental, o p\u00f3 de polietileno \u00e9 dissolvido em um l\u00edquido e, em seguida, a composi\u00e7\u00e3o \u00e9 pulverizada sobre uma placa resfriada com nitrog\u00eanio l\u00edquido. Ap\u00f3s isso, a pe\u00e7a \u00e9 aquecida e esticada em uma m\u00e1quina de lamina\u00e7\u00e3o at\u00e9 desenvolver um filme fino, com a mesma espessura que o papel de embalagem. Medi\u00e7\u00f5es mostraram que o filme de polietileno condutor de calor produzido dessa forma possui um coeficiente de condutividade t\u00e9rmica de 60 W\/(m\u00b7K). Para compara\u00e7\u00e3o, para o a\u00e7o, esse valor \u00e9 de 15 W\/(m\u00b7K), enquanto para pl\u00e1sticos comuns \u00e9 de 0,1\u20130,5 W\/(m\u00b7K). O diamante se destaca com a melhor condutividade t\u00e9rmica \u2014 2000 W\/(m\u00b7K), mas superar os metais em condutividade t\u00e9rmica tamb\u00e9m \u00e9 um bom resultado.<\/p>\n

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

O pol\u00edmero condutor de calor tamb\u00e9m possui uma s\u00e9rie de outras caracter\u00edsticas importantes. O calor \u00e9 conduzido estritamente em uma dire\u00e7\u00e3o. Imagine um laptop ou smartphone que dissipa o calor dos processadores sem um sistema de refrigera\u00e7\u00e3o ativo. Outras \u00e1reas importantes de aplica\u00e7\u00e3o do pl\u00e1stico condutor de calor podem incluir autom\u00f3veis, sistemas de refrigera\u00e7\u00e3o e mais. O pl\u00e1stico n\u00e3o teme a corros\u00e3o, n\u00e3o conduz eletricidade, \u00e9 leve e resistente. A implementa\u00e7\u00e3o de materiais como este pode impulsionar o desenvolvimento da ind\u00fastria em v\u00e1rias \u00e1reas. Espera-se que n\u00e3o precisemos esperar mais nove anos por esse dia iluminado.<\/p>\n

<\/p>\n

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

\t\t\t\t


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

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