中国塑料 ›› 2025, Vol. 39 ›› Issue (11): 79-83.DOI: 10.19491/j.issn.1001-9278.2025.11.013

• 加工与应用 • 上一篇    下一篇

切片参数对MEX 3D打印PLA模型冲击性能的影响

王琛(), 黄涵熠, 王天艺, 张晨赟   

  1. 南京林业大学家居与工业设计学院,南京 210037
  • 收稿日期:2025-04-02 出版日期:2025-11-26 发布日期:2025-11-21
  • 作者简介:王琛,实验师,主要从事3D打印技术应用、逆向工程、计算机辅助产品设计等研究开发工作,996869559@qq.com
  • 基金资助:
    教育部产学研协同育人项目(240904583024847);江苏省大学生创新训练计划项目(202510298200Y)

Effect of slicing parameters on impact resistance of material extrusion 3D⁃printed PLA models

WANG Chen(), HUANG Hanyi, WANG Tianyi, ZHANG Chenyun   

  1. College of Home and Industrial,Nanjing Forestry University,Nanjing 210037,China
  • Received:2025-04-02 Online:2025-11-26 Published:2025-11-21

摘要:

通过简支梁冲击实验,探究了3个主要切片参数(打印方向、挤出温度、填充密度)对MEX 3D打印聚乳酸(PLA)模型冲击性能的影响,通过正交实验对切片参数进行了优化。结果表明,xzy方向打印的PLA模型冲击性能最好,xyz方向打印的PLA模型冲击性能居中,zyx方向打印的PLA模型冲击性能最差;随着挤出温度的升高和填充密度的增大,PLA模型的冲击强度增大,冲击性能越好;3个切片参数对PLA模型冲击性能的影响程度排序如下:填充密度>打印方向>挤出温度;优化后的切片参数为:xzy打印方向、210 ℃挤出温度、80 %填充密度,在此切片参数下打印的PLA模型冲击强度为6.89 kJ/m2、冲击性能最好。

关键词: 切片参数, MEX 3D打印, 聚乳酸, 模型, 冲击性能, 简支梁冲击试验

Abstract:

This paper reports an investigation on the influence of three key slicing parameters, printing orientation, extrusion temperature, and infill density, on the impact resistance of material extrusion (MEX) 3D⁃printed polylactic acid (PLA) models. Using Charpy impact testing and an orthogonal experimental design, the process parameters were systematically evaluated and optimized. The results indicated that printing orientation significantly affected impact resistance, with the highest strength observed for the xzy orientation, followed by xyz, and the lowest for the zyx orientation. Furthermore, impact strength increased concomitantly with higher extrusion temperatures and greater infill density. Analysis of the parameter effects revealed that infill density exerted the greatest influence on impact resistance, followed by printing orientation, and then extrusion temperature. An optimized parameter set was identified: xzy printing orientation, an extrusion temperature of 210 °C, and 80 % infill density. The models printed with these parameters achieved a peak impact strength of 6.89 kJ/m², representing the best performance observed in this study.

Key words: slicing parameters, MEX 3D printing, polylactic acid, model, impact resistance, charpy impact test

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