近年來材料擠製型3D列印機大量被使用，但一般使用者的工作環境普遍缺乏適當的通風設備，因此3D列印排放之汙染將會是個重要的議題。在一般列印參數設置中，與內部填充相關的列印參數常應用於減少重量及時間，但目前尚未有文獻指出內部填充參數設置對於微粒釋放的影響，因此本研究目的為評估內部填充相關列印參數對微粒釋放的影響。
初步測試結果顯示，ABS排放之微粒濃度在封頂第一層列印過程中會產生高峰值，高峰值產生之位置為中空結構結束列印後的第一層。 進一步實驗則評估內部填充高度、內部填充密度、內部填充結構和封頂第一層列印速度對微粒釋放的影響，結果顯示較少的內部填充高度、較高的內部填充密度、較密集的內部填充結構與較慢的封頂第一層列印速度將導致較少的微粒釋放。本研究推斷噴頭端出料不順是導致高峰值產生的主要原因，且發生於模型內部中空結構無法提供第一層固體層列印足夠接觸點的情況。經實驗證明，採取適當之內部填充列印參數設置(30%的內部填充密度與30 mm/s的封頂第1層列印速度)能夠有效降低96%的微粒高峰值濃度。本研究最終根據高峰值現象的發現在特定時段開啟微粒移除裝置，結果顯示僅需在封頂列印階段開啟裝置就能同時達到有效的過濾與節能的需求。

Recently, a large number of material-extrusion-type 3D printers have been used, but there is usually no air quality control in their working environment. Therefore, the pollutions of particle emissions will be an important issue. In the general printing parameter settings, infill is commonly used in printing to reduce weight and time, but rare research studies the effects of infill in particle emissions. Hence, in this research, particle emission behaviors with the existence of infill were investigated.
Preliminary test results that the measured particle concentrations of ABS samples showed a peak emission during the 1st top solid layer printing, which was the first layer after infill. Further experiments were conducted to evaluate the effects of infill height, infill density, infill pattern, and feed rate of the 1st top solid layer printing. Consequently, less infill height, higher infill density, more intensive infill pattern and slower feed rate would lead to less particle emissions and a smaller peak value. Based on the experimental results, this study concluded that the material stuffed around the nozzle was the main reason for the peak emissions and it occurred when the non-solid structure inside the model cannot provide enough contact points to the printing of first layer of top layer. However, this experiment proved that 96% of the peak emissions of particles can be reduced by adopting appropriate infill printing parameter settings (30% infill density and 30mm/s feed rate in the 1st top solid layer printing). In the end of the study, the particle removal device was turned on at a certain time according to the discovery of the peak phenomenon. The result showed that it was only necessary to open the device during the top printing period to achieve effective filtering and energy saving requirements at the same time.

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