Improvement of Surface Roughness and Hydrophobicity in PETG Parts Manufactured via Fused Deposition Modeling (FDM): An Application in 3D Printed Self-Cleaning Parts
Improvement of Surface Roughness and Hydrophobicity in PETG Parts Manufactured via Fused Deposition Modeling (FDM): An Application in 3D Printed Self-Cleaning Parts
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DOI：
10.3390/ma12152499
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发表时间：
2019-08-01
期刊：
影响因子：
3.4
通讯作者：
Romero, Pablo E.
中科院分区：
文献类型：
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作者：
Barrios, Juan M.;Romero, Pablo E.
熔融沉积建模（FDM）技术目前被从事制造发光二极管LED射灯的交通标志的公司所使用。在这个领域，所使用的元件的表面特性（表面光洁度、疏水性）是决定性的，因为需要保留很少的污垢并有利于自清洁行为的表面。进行了五因素三水平的实验设计（L27）。研究的影响因素有：层高（LH）、打印温度(T)、打印速度（PS）、打印加速度（PA）和流量(F)。已经打印了25.0 x 25.0 x 2.4 mm的聚对苯二甲酸乙二醇酯（PETG）样品，并在每个样品中测量了两个垂直方向上的表面粗糙度（R-a,R-0, R-a,R-90），滑动角(SA（0)， SA(90)）和接触角(CA（0)， CA(90)）。Taguchi和ANOVA分析表明，在这种情况下，影响最大的变量是R-a、R- 0 （p值= 0.052）和SA(0) （p值= 0.051）的打印加速度，以及R-a、R- 90 （p值= 0.001）和SA(90) （p值= 0.012）的流速。虽然接触角的方差分析结果不显著，但试件8 （PA = 1500mm /s(2)，流速F = 110%）和试件10 （PA = 1500mm /s(2), F = 100%）的接触角值分别高于或接近恐水极限值。
The fused deposition modeling (FDM) technique is used today by companies engaged in the fabrication of traffic signs for the manufacture of light-emitting diode LED spotlights. In this sector, the surface properties of the elements used (surface finish, hydrophobic features) are decisive because surfaces that retain little dirt and favor self-cleaning behavior are needed. A design of experiments (L27) with five factors and three levels has been carried out. The factors studied were: Layer height (LH), print temperature (T), print speed (PS), print acceleration (PA), and flow rate (F). Polyethylene terephthalate glycol (PETG) specimens of 25.0 x 25.0 x 2.4 mm have been printed and, in each of them, the surface roughness (R-a,R-0, R-a,R-90), sliding angle (SA(0), SA(90)), and contact angle (CA(0), CA(90)) in both perpendicular directions have been measured. Taguchi and ANOVA analysis shows that the most influential variables in this case are printing acceleration for R-a,R- 0 (p-value = 0.052) and for SA(0) (p-value = 0.051) and flow rate for R-a,R- 90 (p-value = 0.001) and for SA(90) (p-value = 0.012). Although the ANOVA results for the contact angle are not significant, specimen 8 (PA = 1500 mm/s(2) and flow rate F = 110%) and specimen 10 (PA =1500 mm/s(2) and F = 100%) have reached contact angle values above or near the limit value for hydrophobia, respectively.