首页|基于3D打印Al2O3梯度点阵的陶瓷/聚脲复合结构研究

基于3D打印Al2O3梯度点阵的陶瓷/聚脲复合结构研究

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自然界中的硬/软结合多相复合结构为新型承载抗冲击结构设计提供了思路.本文设计了一种具有梯度结构的Al2O3陶瓷点阵,采用光固化3D打印技术实现制备,随后将聚脲浸渗入Al2O3梯度点阵获得陶瓷/聚脲复合结构,最后对Al2O3梯度点阵与陶瓷/聚脲复合结构的力学性能进行了测试与表征.研究发现,FGC-0和FGC-30两种Al2O3陶瓷点阵的抗压强度和能量吸收分别为11.03 MPa、6.7 MPa和0.075 MJ/m3、0.0338 MJ/m3.与此同时,FGCS-0和FGCS-30两种梯度复合结构的抗压强度和能量吸收分别达到12.123 MPa、17.479 MPa和0.36068 MJ/m3、0.53643 MJ/m3.梯度复合结构相较于对应的Al2O3陶瓷点阵,其抗压强度和能量吸收分别提升了160.9%和1487.1%.研究表明基于光固化3D打印梯度点阵的陶瓷/聚脲复合结构具有更加优异的力学性能,有望在新型承载抗冲击结构中获得创新应用.
Preparation and Mechanical Properties of Ceramic/Polyurea Composite Structures Based on 3D Printed Al2O3 Gradient Lattice Structure
The hard/soft combined multiphase composite structures in nature are considered for the de-sign of new load-bearing impact-resistant structures.An Al2O3 ceramic lattice with gradient structure was designed and prepared by light-cured 3D printing technology,and then polyurea was infiltrated into the Al2O3 gradient lattice to obtain the ceramic/polyurea composite structure.The mechanical properties of the Al2O3 gradient lattice and the ceramic/polyurea composite structure were tested and character-ized.It was found that the compressive strength and energy absorption of two Al2O3 ceramic lattices, FGC-0 and FGC-30,were 11.03 MPa,6.7 MPa and 0.075 MJ/m3 ,0.0338 MJ/m3 ,respectively.Mean-while,the compressive strength and energy absorption of two gradient composite structures,FGCS-0 and FGCS-30,were 12.123 MPa,17.479 MPa and 0.036068 MJ/m3 ,0.53643 MJ/m3 ,respectively.Com-pared with the corresponding Al2O3 ceramic lattice,the compressive strength and energy absorption of the gradient composite structures were improved by 160.9% and 1487.1%,respectively.The study indi-cates that the ceramic/polyurea composite structure based on light-cured 3D printed gradient lattice has improved mechanical properties and its innovative applications will be used in new load-bearing impact resistant structures.

3D printinggradient latticeceramic/polyurea composite structuremechanical properties

李素文、张学勤、张可强、王刚、何汝杰

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安徽工程大学 材料科学与工程学院,安徽 芜湖 241000

北京理工大学 先进结构技术研究院,北京 100081

3D打印 梯度点阵 陶瓷/聚脲复合结构 力学性能

国家自然科学基金资助项目

52171148

2024

安徽工程大学学报
安徽工程大学

安徽工程大学学报

影响因子:0.289
ISSN:2095-0977
年,卷(期):2024.39(1)
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