金屬制振暨耐疲勞接著系統之研究

The study of damping and fatigue resistant adhesion system for magnesium and aluminum substrates

莊鎮嘉(Chen-Chia Chuang)

指導教授 ： 洪信國

元智大學/工程學院/化學工程與材料科學學系/碩士(2004年)

摘要

本研究主要在建立一系統化之鎂金屬制振與鋁合金耐疲勞表面接著技術。研究內容主要分為兩部分，其一為制振、耐疲勞接著劑之配置，另一部份為鎂合金及鋁合金之表面處理。在實驗中可知硬化後樹脂中殘餘之DICY與環氧基隨不同硬化溫度而改變。而加入ENR後DICY與環氧基殘餘量ENR50 > ENR60 > No ENR。影響橡膠相粒子的因素有硬化溫度、環氧化天然橡膠的含量、環氧樹脂種類、及環氧化天然橡膠的種類，在相同含量及相同硬化溫度下，摻混 ENR-50的樹脂系統其粒子比摻混 ENR-60的樹脂系統之粒徑大且散佈較廣。
鎂合金表面經陽極處理者較穩定；鋁合金表面則以經磷酸陽極處理有最佳之耐久性。剪切接著強度在鎂合金部分其摻混ENR-60之接著劑系統具有較佳之強度；在鋁合金部分則經磷酸陽極處理具有最佳之接著強度。矽烷偶合劑對於鎂合金及鋁合金均可有效增加表面之耐久性。在制振效能上ENR之加入能有效提升制振性能，且ENR含量越多制振性能越佳，但此含量須以不降低接著強度為原則。而在疲勞測試中在高於9MPa之拉力強度下配方試片僅經鉻酸蝕刻和經磷酸陽極處理後鋁合金表面，於一百五十萬次循環拉伸仍未有任何破壞。

關鍵字

接著劑 ； 陽極處理 ； 耐疲勞 ； 制振 ； 鎂金屬 ； 鋁金屬

並列摘要

The damping and fatigue resistant adhesive systems on the magnesium and aluminum substrates are studied with the Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), scanning electron microscopy (SEM), atomic force microscopy (AFM), lap shear strength measurement (LSS), and fatigue test. The results of DSC and FTIR indicate that the residual contents of dicyandiamide (DICY) curing agent and unreacted epoxide groups in the cured epoxy system are changed with respect to the curing temperature and the content of epoxidized natural rubber (ENR). The amounts of unreacted DICY and epoxide groups follow the order of ENR50 > ENR60 > no ENR systems. The formation of ENR rubber phase depends on the curing temperature, the ENR content, the type of the epoxy resin, and the type of ENR used. The ENR50 system has the greater particle size and distribution of the rubber phase than the ENR60 system at the similar rubber content and curing temperature. The stability of Mg substrate is improved by the anodization treatment. The best durability and the greatest LSS are obtained from specimens prepared with the phosphoric acid anodized aluminum substrates. Additionally, the adhesive strength is affected by the type of the epoxy resin and the ENR used. The addition of ENR can enhance the damping properties of the adhesive system. The formulated adhesive-2024 Al systems remain intact after cyclic fatigue test performed one and half million cycles at a stress of 9 MPa.

並列關鍵字

adhesive ； anodization ； fatigue ； damping ； magnesium ； aluminum

參考文獻

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