提升熱傳導性之奈米碳管/聚合物奈米複合材料

Enhanced thermal conductivity properties of carbon nanotube/polymer nanocomposite

林冠明(Guan -Ming Lin)

指導教授 ： 曾俊元

國立臺北科技大學/工程學院/材料科學與工程研究所/碩士(2007年)

摘要

摘要

目前的電子產品講究輕、薄、短、小、多功能和高效能，導致電腦的中央處理處的效能越來越高，所產生的熱量越來越多，如何有效的將廢熱給傳遞散失將是目前主要的問題。奈米碳管-聚合物奈米複合材料為最佳的選擇，奈米碳管因為為一維的中空奈米材料具有優良的物性、化性和熱傳導性，所以將奈米碳管和聚合物相互混合製作成奈米複合材料，可以用來提升聚合物的熱傳導性，但因為奈米碳管其特殊的結構導致其容易團聚糾纏在一起目前，所以製作奈米複合材料之前，先將奈米碳管表面改質提升奈米碳管和聚合物的相容性，並且增加奈米碳管的純度，隨後分別製作4.8vol%的奈米碳管/矽膠、奈米碳管/環氧樹脂奈米複合材料其熱傳導性相對提升百分比73%和81.8%。
本研究使用混合技術能製作奈米碳管/聚合物奈米複合材料，奈米複合材料的熱傳導性能利用HD測量，並將奈米複合材料的熱傳導性質加以分析和討論。

關鍵字

奈米碳管 ； 奈米複合材料 ； 熱傳導性

並列摘要

In additional to the basic demands of light, thin, short and small for various electronic products, their advanced demands with multi-functions, high transmission and high efficiency are paid much attention recently. The operating temperature of the electronic devices (for example CPU) is substantially increased. Therefore, the overall heat dissipation for electronic products is urgently required. In order to dissipate the waste heat from the devices, extensive research on high conductivity materials has been carried out recently. Among various materials the carbon nanotube/polymer nanocomposite is a good candidate. The novel 1-D hollow nanometer size with high tensile strength and thermal conductivities makes carbon nanotubes a good candidate for producing reinforced composite with various matrices. But carbon nanotube is very easy clustering each other, I first oxidize carbon nanotube enhance it can be compatibled with polymer and can be advanced its purity. I resptively make carbon nanotube/silicone and carbon nanotube/epoxy nanocomposites relative enhanced percentage can be enhanced 73% and 83%.
In this study, carbon nanotube/polymer nanocomposites are prepared by using mixing technique. The thermal conductivity of the nanocomposite is measuring by HD.
The measured data are analyzed and discussed based on published thermal conductivity of the composites.

並列關鍵字

carbon nanotubes ； nanocomposite ； conductivity.

參考文獻

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