近年來碳纖維複合材料之需求逐年遞增，然而3D列印複合材料成品性能尚無法符合工業上之需求，因此本實驗室使用連續碳纖維搭配環氧基雙固型樹脂開發3D列印複合材料製程，其可分為連續碳纖維線材製備以及碳纖維列印頭設計與列印兩階段。本研究主軸是搭建連續碳纖維複合材料3D列印機台，並探討目前複合材料3D列印技術中無傾斜、傾斜、整平三種常用之列印方式的優劣。
本研究以OM觀察複合材料列印頭的積層效果，並就觀測結果對其進行改良，同時建立複合材料3D列印系統探討三種常用之列印方式的纖維的分布狀況。由實驗結果得到，無傾斜列印需選用大的噴頭孔徑及層厚度降低碳纖維與噴頭之間摩擦，以減少碳纖維分岔和斷裂的產生，導致該列印模式成品的基材含量高達70.12%；傾斜列印由於未對材料施加壓力以及噴頭會與相鄰材料產生干涉，導致成品產生許多空隙使力學性能降低，因此需要大量的樹脂進行黏固，使得成品的基材含量提高至74.58%；整平列印結合傾斜列印的出料順暢以及刮板壓平的功能，可達到減少空隙以及確保層厚度之目的，同時大幅降低成品之基材含量至54.67%。依據纖維分布狀況以及基材含量多寡，整平列印是三種列印模式中較佳的。

The demand for composite material such as carbon fiber increases these years. However, the mechanical performance of 3D printing composite material nowadays isn’t still satisfied in industry. Therefore, in this study, the continuous carbon fiber and epoxy double solidifying resin are applied to develop the process of 3D printing composite material. It can be divided into two stages. The first stage is continuous carbon fiber wire preparation and the other stage is carbon fiber print head design and printing. The main purpose of this study is to develop a continuous carbon fiber composite material 3D printer. Furthermore, the pros and cons in composite material printing with none tilting, tilting and flattening printing method is also discussed.
In this study, the OM(optical microscope) is adopted to observe the lamination quality of the composite material printing and make the improvement with the observation results. Meanwhile, the composite material 3D printing system is developed to discuss the fiber distribution by using three common printing methods. As the results of the experiments, for none tilting printing method, it has to choose a larger nozzle and layer thickness to prevent the friction between the nozzle and the carbon fiber causes some problems such as fiber breakage bifurcation. Moreover, the proportion of matrix in the product with none tilting method is up to 70.12%. The tilting printing method has many voids in the product due to the interference of the nozzle on adjacent materials as well as no pressure is applied to the extruded material. These voids reduce the mechanical performance of the product. Thus, it needs a great amount of resin to solidify. These cause the proportion of matrix in the product increased to 74.58%. Flattening method combines the advantages of tilting printing methods such as smooth discharge and flattening of the scraper to achieve voids reduced and layer thickness ensured. As a result, the proportion of matrix in the product significantly reduced to 54.67%. According to the distribution of carbon fiber and matrix in the product, the flattening method is the better one compared to the other tested methods.

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