- 學位論文
鋁鎂合金經表面處理後與塑料結合之研究
A study of connecting surface-treated aluminum-magnesium alloy 5052 with plastics
摘要
鋁鎂合金因為具有良好的散射以及材質輕的特性，目前廣泛應用於電子產品，作為產品外殼或零組件；本研究探討鋁鎂合金基材與塑料結合其機械應力的分析。鋁鎂合金基材藉由電化學拋光反應，基材表面粗糙度由 16.3 nm 降低為 3.1 nm，且形貌更趨於ㄧ致，有助於後續陽極處理時電場的均勻分佈。電化學拋光後之基材，經由ㄧ次陽極處理，製備出多孔氧化層膜。孔洞直徑為 31.8 nm，以射出成型的方式，將 PPS 直接射出成型於陽極處理過後的鋁鎂合金基材，利用物理結合的方式不需黏著劑將 PPS 黏著於鋁鎂合金基材上。 此種塑料與鋁鎂合金結合是以高分子與氧化層間之物理結合力，具有其優異之機械特性，可承受之正向拉伸強度為 95.7 ± 3.2 kg/cm2，側向強度為 389.8 ± 7.4 kg/cm2，遠優於現今工業上所使用之方法。為確保實際應用上環境的溫度以及溼度等因素，進行 -10 ℃ ~ 70 ℃，相對溼度保持在 75％ 的環境測試，其機械特性僅些微下降，對於陽極處理後的鋁鎂合金與塑料之結合，影響不大。
並列摘要
A study of fixing plastics to an aluminum-magnesium alloy 5052. First, the aluminum-magnesium alloy 5052 was surface-treated via electropolishing reaction. While the surface roughness of the aluminum-magnesium alloy 5052 was 16.3 mm before electropolishing, the roughness of the electropolished surface was 3.1 nm. We find that the surface morphology was uniform. The aluminum-magnesium alloy 5052 was further surface-treated via anodic treatment. After that, we observed self-organized formation of nanopores arrays in aluminum-magnesium alloy 5052, and the diameters of nanopores were measured 31.8 ± 3.6 nm. The connection between surface-treated aluminum-magnesium alloy 5052 and polyphenylene sulfide (PPS) was via injection molding. The mechanical properties of bonding plastic on aluminum-magnesium alloy 5052 were studied through both normal tension test and horizontal strength test. The testing result of normal tension test and horizontal strength test are respectively 95.7 ± 3.2 nm and 389.8 ± 7.4 nm. And in order to ensure the practical application in environmental temperature and humidity, the environment test of bonding plastic on aluminum-magnesium alloy 5052 was operated in the temperature between -10 ℃ ~ 70 ℃ and relative humidity remained at 75%. The result shows a slightly reduction mechanical properties after the environmental test.