仿血管聚氨酯基复合材料的激光烧结工艺研究

doi:10.11896/cldb.18060095

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Abstract Selective laser sintering technology has been widely used in biomedical field, but due to the limitations of the feedstock, most of SLS products are made of synthetic plastics, ceramics, alloys, and so on. And developing flexible material for laser selective sintering is a pressing need for the present. In this work, polyurethane (TPU) powder was used as the main material, and a composite that can be used for selective laser sintering was studied and prepared. The sintered parts have high strength and forming precision, which can be used to make flexible medical models such as blood vessels. First, the laser sintering experiment of TPU/PS (Polystyrene) powder was performed through the orthogonal experiment method. After testing, it obtained the effect of the process parameters on the strength, precision and sintering density. Secondly, the TPU/PS composites of different mass fractions were sintered to obtain tensile and bending specimens. Through the dimension measurement, the mechanical testing and the microstructure observation by scanning electron microscope, the effects of different component proportion on the microstructure, tensile strength and bending strength of the sintered pieces were obtained, and the optimized component ratio of the flexible material was determined.

Key words： blood vessel-like flexible material selective laser sintering polyurethane matrix composites orthogonal experimental method process parameter optimization mechanical strength

Published: 26 April 2020

CLC number:

TQ334.1

Fund:This work was financially supported by Fundamental Research Funds for the Central Universities (2572019AB20), the Key National Research and Development Programs (2017YFD0601004), “Double First-Class” Fund of Northeast Forestry University (41113253) and the key projects of provincial fund (ZD2017009).

Corresponding Authors: Yanling Guo, professor and doctoral supervisor in Northeast Forestry University. She received her B.E. degree from Dalian University of Technology in 1984 and received her Ph.D. degree from Harbin Institute of Technology in 2001, and studied as a postdoctoral fellow in Harbin Institute of Technology from 2001 to 2003. She was also a visiting scholar in Wu Xianming Manufacturing Technology Center of University of Mic-higan from 2008 to 2009. Dr. Guo has published more than 150 journal papers, and applied 8 national invention patents and 5 of
them were authorized. Her research interests include laser 3D printing biomass materials and equipment, CNC technology and equipment, fruit automatic picking technology and equipment etc. She is responsible for more than 20 scientific research projects, including the National Natural Science Foundation of China, “948” Introduced Project, doctoral program fund, provincial and municipal projects, enterprise cooperation projects and so on. She has trained more than 60 masters, 17 doctors and 7 postdoctoral fellows.

About author:: Yu Zhuang, Ph.D. candidate at School of Mechatro-nics Engineering, Northeast Forestry University. He received his B.E. degree in mechanical design and ma-nufacturing and automation from Northeast Forestry University in 2016. His research has been focused on materials, equipment and processing of selective laser sintering technology.

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	ZHUANG Yu
	GUO Yanling
	LI Jian
	JIANG Kaiyi
	YU Yueqiang
	ZHANG Hui

Cite this article:

ZHUANG Yu,GUO Yanling,LI Jian, et al. Study on Selective Laser Sintering Processing of Blood Vessel-like Polyurethane Based Composite[J]. Materials Reports, 2020, 34(10): 10177-10181.

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http://www.mater-rep.com/EN/10.11896/cldb.18060095 OR http://www.mater-rep.com/EN/Y2020/V34/I10/10177

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