本實驗探討以奈米碳管為二次加強材來強化玻璃纖維/環氧樹酯複合材的疊層機械性質。奈米碳管在複材中會產生架橋機制（Bridge mechanism）、黏滑運動（stick-slip mechanism），進而提升韌性、阻尼特性。由實驗彎曲測試（Bending Test）、動態機械分析儀（ＤＭＡ）觀察到，若以環氧樹酯當作參考值，玻璃纖維/環氧樹酯複合材強化約4倍的彎曲強度、6.5倍的彎曲模數、1倍的斷裂應變、9倍的韌性。若在疊層之間，再添加奈米碳管/環氧樹酯漿料，可再提升約75%的彎曲強度、46%彎曲模數、75%斷裂應變及1.8倍的韌性。由於碳管可導電，加入玻璃纖維/環氧樹酯複合材後可在複材中行成導電網路，因此可藉由通電達到加熱複材的目的。由鋼珠衝擊試驗發現，隨著電壓及溫度的調控，可使複合材料由力學材料變成阻尼材料，最高可吸收85%的衝擊能量。研究顯示衝擊能的吸收機制來自玻纖/碳管與環氧樹酯界面的阻尼與摩擦。

The experiment uses CNTs to second reinforced the mechanical property of the composites. Compared with pure epoxy，composites made of glass fibres (GFs) and epoxy exhibit a 4 times greater in bending stress， 6.5 times in bending modulus，1 time in fracture strain and 9 times in toughness relative to pure epoxy. Further enhancements are observed as carbon nanotubes (CNTs) are used as secondary reinforcement and observations give 75% improvement in bending stress，46% in bending modulus，75% in fracture strain and 180% in toughness. CNTs are electrically conductive so CNTs reinforced GFs/epoxy composites can be electrically heated by voltage application. The steel ball compact tests verify that composites can absorb 85% compact energy at elevated temperature and rigid matrix is transformed into a damper. Study reveals that enhanced damping comes from interfacial friction between GFs/CNTs and epoxy.

目錄
中文摘要 I
Abstract II
致謝 III
目錄 IV
圖表目錄 VII
第一章：實驗動機 1
第二章:文獻回顧 2
2-1奈米碳管的結構與特性 2
2-1-1奈米碳管的結構 2
2-1-2奈米碳管的基本電性 4
2-1-3奈米碳管的機械性質 6
2-2複合材料 7
2-2-1 疊層結構(Laminate) 7
2-2-2 三明治結構 8
2-2-3 奈米碳管/高分子複合材料 11
2-2-4奈米碳管與其複合材料的機械性質 11
2-2-5奈米碳管與其複合材料的電性 14
2-2-6以奈米碳管為加熱源之應用 16
2-2-7奈米碳管複合材料的挑戰 18
2-3玻璃纖維 20
2-3-1玻璃纖維特性 20
2-3-2玻璃纖維種類 21
2-4高分子及環氧樹脂簡介 24
2-4-1高分子 24
2-4-2環氧樹脂(Epoxy) 25
2-5 彎曲試驗機械性質分析 27
2-6 玻璃轉換溫度量測 30
2-6-1 玻璃轉換溫度(Tg) 30
2-6-2 熱分析原理 31
2-6-3 環氧樹脂之玻璃轉換溫度量測 33
2-6-4 玻璃轉換溫度與阻尼(damping)之關係 35
第三章 實驗步驟 37
3-1實驗藥品與儀器 37
3-2實驗流程 38
3-2-1試片製作 38
3-2-2實驗量測流程 41
3-2-3彎曲試驗 42
3-2-4 動態機械分析（ＤＭＡ） 43
3-2-5衝擊阻尼試驗 44
第四章：結果與討論 47
4-1 SEM分析 47
4-2彎曲測試（Bending Test） 53
4-3 DMA分析 59
4-4鋼珠衝擊試驗 63
4-4-1加熱板加熱 64
4-4-2 Stick-Slip mechanism 65
4-4-3歐姆加熱 66
4-4-4MWCNTs/epoxy/GFs在外加電場之下 66
4-5升溫速率 69
第五章：結論 72
參考文獻 73

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