以DLP進行3D列印製作大面積微米級結構

Abstract

本論文的研究方向為透過數位光學處理(Digital Light Processing, DLP)進行3D列印，選用光固化上照式成型系統，搭配高精度三軸步進式移動平台，設計出能製作大面積微結構的3D列印機，相較於以往的單軸步進式移動平台，本系統能夠印製出接近相同尺寸，且面積擴大16倍的規則性微結構，更能貼近實際產業應用的需求。 而對此微結構在製程上的影響會以切層厚度、樹脂配方、曝光時間等主要列印參數分別進行探討，以及如何解決過度固化的方式，最後在結構印製完成後，則是對不同結構進行壓力測試，三種不同面積大小結構的抗壓能力依序為4x4結構最好、2x2結構次之、1x1結構最差，而三種結構在此條件下的壓縮測試中所得到的抗壓強度並無明顯的比例關係。

The purpose of this research is to produce large-area micro-scale structures by 3D printing through Digital Light Processing (DLP), using a Top Exposure Stereolithography System, combined with a high precision three-axis stepping motor platform. Compared with the previous single-axis stepping motor platform, this system can print regular micro-structures that are close to the same size and 16 times larger in area. These structures will have more opportunity to supply the need of practical industrial. The influence of the micro-scale structure on the process will be discussed separately with the main printing parameters such as slice thickness, resin formulation and exposure time, and the solution to the over-curing. Then, after the structure is printed. The structure will subjected to pressure test. According to the experiment, the compressive strength of the three different area structures, 4x4 structure is the best, 2x2 structure is the second, and the 1x1 structure is the worst. The compression test of the three structures under this condition has no obvious proportional relationship.