Stress Evolution and Forming Mechanism of Viscoelastic Polymer Materials in Direct Ink Writing 3D Printing

ZHANG Hai-feng; TIAN Kai; ZHANG Rui-han; YUAN Wen-jun

doi:10.14028/j.cnki.1003-3726.2026.26.134

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Stress Evolution and Forming Mechanism of Viscoelastic Polymer Materials in Direct Ink Writing 3D Printing

更新时间：2026-05-29

- Stress Evolution and Forming Mechanism of Viscoelastic Polymer Materials in Direct Ink Writing 3D Printing
- Polymer Bulletin Vol. 39, Issue 6, Pages: 910-919(2026)
- 作者机构：
  
  西安交通大学化学工程与技术学院　西安 710049
- 作者简介：
- 基金信息：
- DOI：10.14028/j.cnki.1003-3726.2026.26.134
  CLC：
- Received：11 March 2026，
  
  Accepted：15 April 2026，
  
  Online First：12 May 2026，
  
  Published：20 June 2026
- 稿件说明：
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张海峰, 田凯, 张睿涵, 袁文君. 黏弹性高分子材料墨水直写3D打印的应力演化与成型机理. 高分子通报, 2026, 39(6), 910–919.

Zhang, H. F.; Tian, K.; Zhang, R. H.; Yuan, W. J. Stress evolution and forming mechanism of viscoelastic polymer materials in direct ink writing 3D printing. Polym. Bull. (in Chinese), 2026, 39(6), 910–919.
张海峰, 田凯, 张睿涵, 袁文君. 黏弹性高分子材料墨水直写3D打印的应力演化与成型机理. 高分子通报, 2026, 39(6), 910–919. DOI： 10.14028/j.cnki.1003-3726.2026.26.134.

Zhang, H. F.; Tian, K.; Zhang, R. H.; Yuan, W. J. Stress evolution and forming mechanism of viscoelastic polymer materials in direct ink writing 3D printing. Polym. Bull. (in Chinese), 2026, 39(6), 910–919. DOI： 10.14028/j.cnki.1003-3726.2026.26.134.

摘要

黏弹性高分子材料因其兼具黏性与弹性的独特流变特性，被认为是墨水直写3D打印的理想材料。然而，目前对高分子材料复杂流变特性的系统分析尚显不足。本工作系统研究了弹性和打印速度对黏弹性高分子材料墨水直写3D打印过程的影响机制，重点揭示了高弹性引发局部应力集中与分子链过度变形，最终造成细丝断裂的内在规律。同时，深入分析了打印速度提升会增大近壁区残余应力以及截面内最大残余应力增长速率随材料弹性与拉伸作用增强而逐渐减缓的调控关系。上述结果为深入理解黏弹性高分子材料在挤出沉积过程中的应力演化和结构演变规律提供了依据，对优化打印工艺参数、抑制成型缺陷具有指导意义。

Abstract

Viscoelastic polymer materials

characterized by their unique combination of viscous and elastic rheological properties

are considered ideal for direct ink writing (DIW) 3D printing. However

systematic analysis of polymer materials with complex rheological behavior remains insufficient. This study systematically investigates the influence mechanisms of elasticity and printing speed on the DIW 3D printing process of viscoelastic polymer materials

with a focus on elucidating the intrinsic relationship between high elasticity

localized stress concentration

excessive molecular chain deformation

and eventual filament fracture. Furthermore

it provides an in-depth analysis of how increasing printing speed elevates residual stress near the wall region and how the growth rate of the maximum residual stress within the cross-section gradually decreases with enhanced material elasticity and stretching effects. The findings offer critical insights into the stress evolution and structural transformation during the extrusion and deposition of viscoelastic polymer materials

providing clear guidance for optimizing printing parameters and mitigating forming defects.

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references

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