下照式光固化3D列印系統從原先以雷射做為光源到使用Digital Light Processing(DLP)以及Liquid Crystal Display(LCD)做為光罩進行面的曝光成型，使光固化3D列印系統向高速列印發展，主要是因為這兩種列印系統將能量與形貌分開處理，以LCD光固化3D列印為例，能量是由LED做為來源，而形貌則是由LCD面板定義。但下照式光固化3D列印仍然有待解決的問題，主要是每層固化後必須將成型平台抬升一定高度使固化層與樹脂槽底膜分離。為解決此問題，Carbon 3D使用氧抑制效果以及台科大使用矽膠搭配抑制劑來達到抗沾黏(死區)的概念，將原先耗時的Z軸抬升及下降時間省去，使列印時Z軸只需抬升一層層厚達到連續列印，使列印時間更加縮短。
本研究目的是採用可量產塗佈技術製做高速光固化3D列印樹脂槽底膜，此膜使用矽膠做為主要材料，搭配抑制劑製成矽膠抑制膜，研究最後發現製作的100μm矽膠抑制膜其厚度均勻度為2%左右，與市售鐵氟龍(Teflon)膜的3%相近，而薄膜製做時間相較先前縮短至25-30分鐘，並且將薄膜使用壽命、列印精度等進行完整的測試。

From using laser as the light source to using digital light processing (DLP) and liquid crystal display (LCD) as the light mask in additive manufacturing, the bottom-up vat photopolymerization 3D printing system has developed towards to high speed 3D printing. The main reason is that these two printing systems (DLP & LCD) separate 3D printing into two parts, which are the source of the energy provider and the definition of the shape. Taking the LCD 3D printing system for example, the energy source is provided by the LED, and the definition of the shape is provided by the LCD panel. However, there are still some problems to be solved in bottom-up vat photopolymerization 3D printing system, mainly because after each layer is cured, the building platform must be lifted to a certain of height to separate the cured layer from the resin tank bottom film. In order to solve this problem, Carbon 3D uses oxygen as inhibitor and NTUST uses polydimethylsiloxane (PDMS) with designed inhibitor to achieve the concept of anti stick effect(dead zone), which saves the original time-consuming of z-axis lifting and reposition time, so that the z-axis only needs to be lifted a layer height to achieve continuous printing, which shortens more printing time.
The purpose of this study is to develop resin tank bottom film for high speed vat photopolymerization 3D printing system by using mass production coating technology. This film uses PDMS as the main material with inhibitors as additive. Finally, it is found that 100 μm, 150 μm and 200 μm PDMS inhibition films are relatively stable when coating. Furthermore, comparing with their printing separation forces, it is found that the film thickness has little effect on the separation forces, so 100μm PDMS is used for further study. The coating thickness uniformity of 100μm PDMS inhibition film is about 2%, which is close to the commercially available Teflon film of 3%. The film making time is shortened to 25-30 minutes compared with the previous procedure, and the film life time and printing accuracy are tested.

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