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TiNi形狀記憶合金線材複合材料／環氧樹酯之低頻制振能特性
Low Frequency Damping Characteristics of TiNi Wires/Epoxy Composites
摘要
在TiNi形狀記憶合金線材與環氧樹酯基材之複合材料中，隨著TiNi線材比例的增加並不會影響對此複合材料的玻璃轉化溫度（Tg）以及活化能，這是因為所添加的金屬線材並不會參與交聯反應，也不會影響環氧樹酯的交聯程度。當TiNi形狀記憶合金線材／環氧樹酯複合材料中之TiNi線增加時，其麻田散體相變態內耗峰也會越來越明顯，但環氧樹酯基材之玻璃轉化溫度訊號峰的tanδ卻會大幅減少。玻璃轉化溫度內耗峰之活化能不隨TiNi形狀記憶合金線材的添加而有明顯的改變。經退火後的內耗峰tanδ值明顯高於退火前。這是因為TiNi形狀記憶合金經退火後可以消除原本的缺陷。
並列摘要
The peak temperature and apparent activation energy of the Tg transition peak for TiNi wires/epoxy composites do not show significant difference with the number of inserted TiNi wires because they do not participate in cross-linking or the glass transition process of the epoxy resin. With the increase of inserted TiNi wires in the composite, the damping capacity of the martenstic transformation peak increases, but that of the Tg transition peak decreases. The damping capacity, peak temperature and apparent activation energy of the Tg transition peak for TiNi wires/epoxy composite do not alter significantly, whether the inserted TiNi wires are annealed or not. The martenstic transformation peak of the annealed TiNi wires/epoxy composite exhibits a higher damping capacity since the defects/dislocations, which restrain the volume of the transformed martensite in TiNi wires can be eliminated after annealing.