ABSTRACT

Wood-flour PLA (PLA/W) composite material is a recyclable new material that is suitable for wood-looking components. This organic material can be found in different wood-flour (WF) compositions recently and is appropriate for the FFF (Fused Filament Fabrication) process. The current research investigates the impact of two key parameters, the nozzle temperature (NT, ^oC) and the layer thickness (LT, mm) onto surface quality (roughness average Ra and maximum profile height Rt; μm) and dimensional accuracy (linear external and wall thickness in X and Y direction, mm). A commercially available wood flour of pine with additives and pure PLA used for the experimental work. The results are analyzed using statistical descriptive tools (ANOM, ANOVA and interaction plots) and regression analysis for modeling the results. It has been found that lower values of LT and NT optimize both the surface quality and the dimensional accuracy. The LT is the dominant parameter for the surface quality, while both the LT and the NT are equally important for dimensional accuracy.

摘要

木粉PLA（PLA/W）复合材料是一种可回收的新型材料，适用于仿木部件。这种有机材料最近可以在不同的木粉 (WF) 组合物中找到，适用于 FFF（熔融长丝制造）工艺。当前的研究调查了两个关键参数的影响，即喷嘴温度 (NT, ^oC) 和层厚 (LT, mm) 影响表面质量（粗糙度平均 Ra 和最大轮廓高度 Rt；μm）和尺寸精度（X 和 Y 方向的线性外部和壁厚，mm）。用于实验工作的带有添加剂和纯 PLA 的市售松木木粉。使用统计描述工具（ANOM、ANOVA 和交互图）和回归分析对结果进行建模来分析结果。已经发现，LT 和NT 的较低值可以优化表面​​质量和尺寸精度。LT 是表面质量的主要参数，而 LT 和 NT 对于尺寸精度同样重要。