中国塑料 ›› 2025, Vol. 39 ›› Issue (9): 68-74.DOI: 10.19491/j.issn.1001-9278.2025.09.011

• 加工与应用 • 上一篇    下一篇

3D打印柔性可拉伸离散功能梯度衬底的界面结构设计

韩雨生, 杨建军(), 郑莹, 王雅骁   

  1. 青岛理工大学机械与汽车工程学院,山东 青岛 266520
  • 收稿日期:2024-09-25 出版日期:2025-09-26 发布日期:2025-09-22
  • 通讯作者: 杨建军(1977—),男,教授,从事3D打印、微纳增材制造、柔性电子方面研究,yjjdem@163.com
    E-mail:yjjdem@163.com
  • 基金资助:
    山东省自然科学基金项目(ZR2021ME139)

Interface structure design of 3D printing flexible stretchable discrete functional gradient substrate

HAN Yusheng, YANG Jianjun(), ZHENG Ying, WANG Yaxiao   

  1. School of Mechanical and Automotive Engineering,Qingdao University of Technology,Qingdao 266520,China
  • Received:2024-09-25 Online:2025-09-26 Published:2025-09-22
  • Contact: YANG Jianjun E-mail:yjjdem@163.com

摘要:

为了解决离散功能梯度衬底梯度层间易分离、拉伸性能差的问题,提出了一种基于界面结构设计的离散功能梯度衬底结构。以聚二甲基硅氧烷(PDMS)基材料为例,采用挤出式3D打印方法制备功能梯度柔性衬底,探究了6种不同界面结构功能梯度衬底的拉伸性能,得到了抑制界面分离的最佳结构为岛形结构;并将拉伸率作为实验指标,对影响拉伸率的岛形结构参数进行正交实验,最终确定了单位长度内岛数为4、岛桥长度比1、岛桥宽度比1.75、边距与总宽比0.07的岛形结构为最优参数,并制作了相应的功能梯度衬底。结果表明,岛形结构能较好地抑制功能梯度衬底的层间分离,拉伸率提高了1.82倍。

关键词: 离散功能梯度柔性衬底, 拉伸性能, 界面结构设计

Abstract:

To address the challenges of interfacial separation and poor tensile properties in discrete functional gradient substrates, this study proposed a novel substrate structure based on interface design. Using PDMS⁃based materials as an example, functional gradient flexible substrates were fabricated via extrusion⁃based 3D printing. Six distinct interface structures were evaluated for their tensile properties, with the island structure demonstrating the most effective suppression of interfacial delamination. Orthogonal experiments were conducted to optimize the island structure parameters, using tensile ratio as the key performance metric. The optimal configuration was determined as follows: 4 islands per unit length, an island⁃to⁃bridge length ratio of 1, a width ratio of 1.75, and an edge margin ratio of 0.07. The results indicated that the island structure significantly enhanced interfacial cohesion, improving the tensile ratio by 1.82 times compared to conventional designs.

Key words: discrete functional gradient flexible substrate, tensile property, interface structure design

中图分类号: