中国塑料 ›› 2019, Vol. 33 ›› Issue (2): 62-68.DOI: 10.19491/j.issn.1001-9278.2019.02.012

• 加工与应用 • 上一篇    下一篇

PS/PET/GF三元复合材料SLS工艺参数耦合实验研究

杨来侠,杨繁荣*,陈梦瑶   

  1. 西安科技大学机械工程学院
  • 收稿日期:2018-08-31 修回日期:2018-10-24 出版日期:2019-02-26 发布日期:2019-03-26
  • 基金资助:
    国家863计划项目(2015AA042503)

Experimental Study of SLS Process Parameters Coupling of PS/PET/GF Ternary Composites

  • Received:2018-08-31 Revised:2018-10-24 Online:2019-02-26 Published:2019-03-26

摘要: 为了研究选择性激光烧结工艺参数对聚苯乙烯(PS)/聚酯纤维(PET)/玻璃纤维(GF)三元复合材料烧结件质量的影响,选取分层厚度、扫描速度和扫描间距3个工艺参数进行耦合实验,分析总结了尺寸精度和弯曲强度的变化规律和原因。其中,x和y方向对PS/PET/GF复合粉末烧结件尺寸精度的工艺参数变化影响较小,而z向对其影响较大,弯曲强度主要受成型过程中激光能量密度的影响。结果表明烧结件的弯曲强度和精度呈此消彼长的变化规律,这对选择合适的工艺参数来提高烧结件的质量提供了实验依据。

Abstract: To clarify the effect of selective laser sintering process parameters on the quality of sintered parts made from polystyrene (PS)/polyester fiber (PET)/glass fiber (GF) ternary composites, three process factors including thickness, scanning speed and distance were selected for the coupling experiment, and the variation law and reasons of dimensional accuracy and bending strength were analyzed and summarized. The size accuracy in the x and y directions of the sintering parts was seldom affected by the variation of process parameters, whereas there was a significant influence on the accuracy in the z direction. The bending strength was mainly influenced by the laser energy density during the forming process. The results indicated that the bending strength of the sintered parts decreased with an increase of dimensional precision. This result provides an experimental evidence for the selection of technological parameters to improve the quality of the sintered parts.