中国塑料 ›› 2023, Vol. 37 ›› Issue (11): 10-14.DOI: 10.19491/j.issn.1001-9278.2023.11.002

• 材料与性能 • 上一篇    下一篇

纳米二氧化硅含量对PES基激光烧结件表面质量和力学性能的影响

陈晖(), 钱伟栋, 孙玲胜, 谭博   

  1. 东北林业大学机电工程学院,哈尔滨 150040
  • 收稿日期:2023-06-05 出版日期:2023-11-26 发布日期:2023-11-22
  • 作者简介:陈晖(1974—),女,副教授,主要研究方向为3D打印材料、材料制造学、先进制造技术,chenhui_nefu@163.com
  • 基金资助:
    国家自然科学基金资助项目(52075090)

Effect of nano⁃SiO2 content on surface quality and mechanical properties of PES⁃based laser sintered parts

CHEN Hui(), QIAN Weidong, SUN Lingsheng, TAN Bo   

  1. College of Mechanical and Electrical Engineering,Northeast Forestry University,Harbin 150040,China
  • Received:2023-06-05 Online:2023-11-26 Published:2023-11-22

摘要:

以聚醚砜树脂(PES)为基体材料,纳米二氧化硅(nano⁃SiO2)为填料,采用选择性激光烧结技术(SLS)制备PES/nano⁃SiO2复合材料烧结件,研究了nano⁃SiO2含量为0~3%(质量分数,下同)时对烧结件表面质量和力学性能的影响。结果表明,烧结件的轮廓算术平均偏差(Ra)在nano⁃SiO2含量为0.1 %~1 %时变化较小,当nano⁃SiO2含量超过1 %后显著上升;烧结件拉伸强度、弯曲强度和冲击强度随着nano⁃SiO2含量的增加均呈先增大后减小的趋势。当nano⁃SiO2含量为0.5 %时,烧结件的拉伸强度和弯曲强度均达到最大值,相较于纯PES烧结件,拉伸强度和弯曲强度分别提升了22.66 %和41.51 %;烧结件的冲击强度在nano⁃SiO2含量为0.7 %时达到最大值,提升了12.10 %。

关键词: 选择性激光烧结, 纳米二氧化硅, 聚醚砜树脂, 表面质量, 力学性能

Abstract:

Polyethersulfone resin (PES)/nano⁃SiO2 composite sintered parts were prepared through selective laser sintering using PES as a matrix and nano⁃SiO2 as a filler. The effect of nano⁃SiO2 content on the surface quality and mechanical properties of the composite sintered parts were investigated. The results indicated that the composite sintered parts presented a little change in the arithmetic mean in the nano⁃SiO2 content range of 0.1~1.0 wt% and then their deviation increased significantly at a nano⁃SiO2 content above 1.0 wt%. The tensile strength and flexural strength of the composite sintered parts increased first and then tended to decrease with an increase in the nano⁃SiO2 content. The tensile strength and bending strength of the composite sintered parts reached a maximum at a nano⁃SiO2 content of 0.5 wt%. Compared to pure PES sintered parts, the composite sintered parts exhibited an increase in tensile strength and bending strength by 22.66 % and 41.51 %, respectively. Their impact strength reached a maximum at a nano⁃SiO2 content of 0.7 wt%, which was increased by 12.10 %.

Key words: selective laser sintering, nano silica, polyethersulfone resin, surface quality, mechanical property

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