Enhanced thermal conductivity and dimensional stability of flexible polyimide nanocomposite film by addition of functionalized graphene oxide

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Title:	Enhanced thermal conductivity and dimensional stability of flexible polyimide nanocomposite film by addition of functionalized graphene oxide
Authors:	黃世梁
Contributors:	化工與材料工程系
Date:	2013-11
Issue Date:	2017-09-26 13:47:01 (UTC+8)
Abstract:	Polyimide (PI) nanocomposites with both enhanced thermal conductivity and dimensional stability were achieved by incorporating glycidyl methacrylate-grafted graphene oxide (g-GO) in the PI matrix. The PI/g-GO nanocomposites exhibited linear enhancement in thermal conductivity when the amount of incorporated g-GO was less than 10 wt%. With the addition of 10 wt% of g-GO to PI (PI/g-GO-10), the thermal conductivity increased to 0.81 W m-1 K-1 compared to 0.13 W m-1 K-1 for pure PI. Moreover, the PI/g-GO-10 composite exhibited a low coefficient of thermal expansion (CTE) of 29 ppm °C-1. The values of CTE and thermal conductivity continuously decreased and increased, respectively, as the g-GO content increased to 20 wt%. Combined with excellent thermal stability and high mechanical strength, the highly thermally conducting PI/g-GO-10 nanocomposite is a potential substrate material for modern flexible printed circuits requiring efficient heat transfer capability. © 2012 Society of Chemical Industry. (48 refs)
Relation:	Polymer International
Appears in Collections:	[Department of Chemical and Materials Engineering] 【化工與材料工程系】期刊論文

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