氮化鋁(AlN)在陶瓷材料中擁有高熱傳導的優異性能，本實驗室使用燃燒合成法合成氮化鋁，再經過球磨法研磨氮化鋁至小粒徑。然而氮化鋁在濕氣存在時易反應成氫氧化鋁而使得整體熱傳導值下降，當粉體粒徑變小時，這個問題更加嚴重。欲藉由表面處理，來解決此問題。本論文選用四種具有不同官能基的矽氧烷耦合劑改質氮化鋁粉。經抗濕測試證明添加矽氧烷耦合劑可使氮化鋁具有抵抗濕氣的能力。並且因為氮化鋁的表面性能改變而未來可以應用在高分子/氮化鋁複合材料上。本論文亦尋找出合適的矽氧烷耦合劑添加量使其有較佳的抗濕能力。另外，亦使用磷酸改質氮化鋁粉，其亦可使氮化鋁粉具有良好的抗濕性。添加磷酸的量需控制得宜，否則可能會使得處理後的氮化鋁粉氧含量太高。最後並比較研發表面改質的氮化鋁粉與市售氮化鋁粉之抗濕效果，發現研發的氮化鋁粉具有在高溫抵抗濕氣的優異性能。

Aluminum nitride (AlN) is a kind of ceramic material with high thermal conductivity. Aluminum nitride is synthesized by self-propagating high temperature synthesis method in the author’s laboratory. It is milled to small size by ball milling. However, its thermal conductivity decreases when it reacts with moisture to form aluminum hydroxide. This problem becomes even more serious when the size of the powder decreases. In this thesis, four kinds of silane coupling agents with different functional groups were used to treat the aluminum nitride powder. Aluminum nitride powder treated with the silane coupling agents could prevent itself from hydrolysis. By moisture resistance test, aluminum nitride powder with surface treatment was proved to have ability to resist moisture attack. In addition, it can be used in fabrication of polymer/aluminum nitride composite materials because the surface treatment agent is also a coupling agent. Besides, aluminum nitride powder can also possess water-resistant capability by treating with phosphoric acid. The appropriate amount of phosphoric acid was also investigated in this study so that the oxygen content of aluminum nitride powder after the treatment will not be too high. We also compare the moisture resistant capability of the aluminum nitride powder treated in the present study with the commercial products and they have better moisture resistant capability than the most commercial products.

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