3D printing of unsupported multi-scale and large-span ceramic via near-infrared assisted direct ink writing

In the three-dimensional printing process of ceramic with low-angle structures, additional supporting structures are usually employed to avoid collapse of overhanging parts. However, the extra supporting structures not only affect printing efficiency, but the problems caused by their removal are als...

Full description

Saved in:
Bibliographic Details
Published in:Nature communications 2023-04, Vol.14 (1), p.2381-2381, Article 2381
Main Authors: Zhao, Yongqin, Zhu, Junzhe, He, Wangyan, Liu, Yu, Sang, Xinxin, Liu, Ren
Format: Article
Language:English
Subjects:
3-D printers
639/166/988
639/301/1023/1024
639/301/930/1032
639/638/298
Additive manufacturing
Cantilever beams
Ceramics
Curing
Diameters
Efficiency
Filaments
Humanities and Social Sciences
I.R. radiation
Irradiation
Light
multidisciplinary
Photopolymerization
Printing
Rheology
Science
Science (multidisciplinary)
Shear stress
Stress concentration
Three dimensional printing
Torsion springs
Upconversion
Viscosity
Writing
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In the three-dimensional printing process of ceramic with low-angle structures, additional supporting structures are usually employed to avoid collapse of overhanging parts. However, the extra supporting structures not only affect printing efficiency, but the problems caused by their removal are also a matter of concern. Herein, we present a ceramic printing method, which can realize printing of unsupported multi-scale and large-span ceramics through the combination of direct ink writing and near-infrared induced up-conversion particles-assisted photopolymerization. This printing technology enables in-situ curing of multi-scale filaments with diameters ranging from 410 µm to 3.50 mm, and ceramic structures of torsion spring, three-dimensional bending and cantilever beam were successfully constructed through unsupported printing. This method will bring more innovation to the unsupported 3D manufacturing of complex shape ceramics. In 3D ceramic printing, the need for additional supports can increase processing time and introduce defects during post-processing removal. Here, authors merge direct ink writing and up-conversion particles-assisted photopolymerization under near-infrared irradiation for support-free printing with controlled curing rates reducing material waste, printing time, and post-processing steps.
ISSN:2041-1723
2041-1723
DOI:10.1038/s41467-023-38082-8