本實驗透過螺桿進料型熔融沉積(FDM) 3D列印機配合UV光進行乙烯/醋酸乙烯酯共聚合物(EVA)複合材料的光固化成型技術，成功的列印出設計形狀的高密度發泡體前樣胚；再透過超臨界N2物理發泡技術製備出EVA發泡材。在3D成型製程方面，本研究於EVA複材中混入光起始劑2-Hydroxy-4′-(2-hydroxyethoxy)-2-methylpropiophenone (I2959)，並藉由列印過程中的紫外光照射產生自由基預固化列印物件，再配合列印成形後的紫外光後處理程序，達到提升材料後續的可發泡性熔體強度。經由流變儀的檢測結果顯示，藉由紫外光的光固化反應，材料熔體的扭矩值與未固化之物件相比有大幅度的提升。而在光起始劑I2959使用劑量上，以0.2 phr ~ 0.3 phr區間對本實驗的EVA複材具有最佳的固化效果。在固化程度對後續發泡材體的影響上，過低的固化程度會使發泡體的膨脹倍率變大，但內部泡孔結構產生破泡現象導致外表變形與機械強度降低的狀況。此外，本實驗為了提升列印樣品內部的熔體強度，除了加入發泡補強材料CD101外，也在列印過程中改變紫外光面光源強度進行第一階段預固化。預固化程序能有效提升列印物件內部固化程度，但是過量會影響層間相容性，使列印物件層間黏著力降低導致泡材的剝離強度下降。另外，對於CD101在發泡材料的補強效果上，於固化程度相同的基礎上，加入20%的CD101具有最佳的材料補強效果，發泡體的泡孔密度明顯增加，其斷裂應力、C型撕裂強度、剝離強度及永久壓縮率上皆有大幅度的提升。

(1) The EVA composite was successfully printed on the screw-fed pellet 3D printer, and the material remained stable at printing temperatures of 220 °C, 230 °C, 240 °C, and 250 °C without affecting the post-UV curing effect. (2) The EVA composite is prone to bubble breakage and merging without UV curing, but this experiment can obtain a dense and structurally complete bubble material with 0.05 phr, 0.1 phr and 0.2 phr of I2959 UV curing, and the best mechanical strength of the bubble material with 0.2 phr I2959 curing.(3) in the material temperature and pressure of the foam range, the foaming temperature 90 ° C ~ 170 ° C can be foamed out of the dense and complete bubble material, foam density as low as 0.08 (the lower the density the greater the expansion rate), and the foaming pressure from 120 kg/cm2 ~ 200 kg/cm2, the bubble density increases with the pressure and the structure of no obvious breakage phenomenon.4. Printing The addition of pre-curing light source during the printing process can really improve the internal light curing of the material, and the comparison of the curing depths of UV-0, UV-15 and UV-25 shows that the stronger the pre-curing light source, the deeper the curing depth, but the enhancement of the pre-curing light source will lead to structural delamination and physical degradation of the foam material. 5. The best addition is 20%. In supercritical foaming behavior, the addition of CD101 helps to generate a higher density of bubble structure and can effectively improve the physical properties of the foaming material, of which 20% addition is the best effect of physical properties.

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